fix dangling pointer

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.ai/instructions.md

@@ -9,7 +9,7 @@ This document provides essential context for AI models interacting with this pro
 
 ## 2. Core Technologies & Stack
 
-*   **Languages:** Python (>=3.10), C++ (gnu++20)
+*   **Languages:** Python (>=3.11), C++ (gnu++20)
 *   **Frameworks & Runtimes:** PlatformIO, Arduino, ESP-IDF.
 *   **Build Systems:** PlatformIO is the primary build system. CMake is used as an alternative.
 *   **Configuration:** YAML.
@@ -38,7 +38,7 @@ This document provides essential context for AI models interacting with this pro
     5.  **Dashboard** (`esphome/dashboard/`): A web-based interface for device configuration, management, and OTA updates.
 
 *   **Platform Support:**
-    1.  **ESP32** (`components/esp32/`): Espressif ESP32 family. Supports multiple variants (S2, S3, C3, etc.) and both IDF and Arduino frameworks.
+    1.  **ESP32** (`components/esp32/`): Espressif ESP32 family. Supports multiple variants (Original, C2, C3, C5, C6, H2, P4, S2, S3) with ESP-IDF framework. Arduino framework supports only a subset of the variants (Original, C3, S2, S3).
     2.  **ESP8266** (`components/esp8266/`): Espressif ESP8266. Arduino framework only, with memory constraints.
     3.  **RP2040** (`components/rp2040/`): Raspberry Pi Pico/RP2040. Arduino framework with PIO (Programmable I/O) support.
     4.  **LibreTiny** (`components/libretiny/`): Realtek and Beken chips. Supports multiple chip families and auto-generated components.
@@ -60,7 +60,7 @@ This document provides essential context for AI models interacting with this pro
         ├── __init__.py          # Component configuration schema and code generation
         ├── [component].h        # C++ header file (if needed)
         ├── [component].cpp      # C++ implementation (if needed)
-        └── [platform]/         # Platform-specific implementations
+        └── [platform]/          # Platform-specific implementations
             ├── __init__.py      # Platform-specific configuration
             ├── [platform].h     # Platform C++ header
             └── [platform].cpp   # Platform C++ implementation
@@ -150,7 +150,8 @@ This document provides essential context for AI models interacting with this pro
 *   **Configuration Validation:**
     *   **Common Validators:** `cv.int_`, `cv.float_`, `cv.string`, `cv.boolean`, `cv.int_range(min=0, max=100)`, `cv.positive_int`, `cv.percentage`.
     *   **Complex Validation:** `cv.All(cv.string, cv.Length(min=1, max=50))`, `cv.Any(cv.int_, cv.string)`.
-    *   **Platform-Specific:** `cv.only_on(["esp32", "esp8266"])`, `cv.only_with_arduino`.
+    *   **Platform-Specific:** `cv.only_on(["esp32", "esp8266"])`, `esp32.only_on_variant(...)`, `cv.only_on_esp32`, `cv.only_on_esp8266`, `cv.only_on_rp2040`.
+    *   **Framework-Specific:** `cv.only_with_framework(...)`, `cv.only_with_arduino`, `cv.only_with_esp_idf`.
     *   **Schema Extensions:**
         ```python
         CONFIG_SCHEMA = cv.Schema({ ... })

.clang-tidy.hash

@@ -1 +1 @@
-6af8b429b94191fe8e239fcb3b73f7982d0266cb5b05ffbc81edaeac1bc8c273
+499db61c1aa55b98b6629df603a56a1ba7aff5a9a7c781a5c1552a9dcd186c08

.github/actions/build-image/action.yaml

@@ -47,7 +47,7 @@ runs:
 
     - name: Build and push to ghcr by digest
       id: build-ghcr
-      uses: docker/build-push-action@v6.18.0
+      uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false
@@ -73,7 +73,7 @@ runs:
 
     - name: Build and push to dockerhub by digest
       id: build-dockerhub
-      uses: docker/build-push-action@v6.18.0
+      uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false

.github/actions/restore-python/action.yml

@@ -17,12 +17,12 @@ runs:
   steps:
     - name: Set up Python ${{ inputs.python-version }}
       id: python
-      uses: actions/setup-python@v5.6.0
+      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
       with:
         python-version: ${{ inputs.python-version }}
     - name: Restore Python virtual environment
       id: cache-venv
-      uses: actions/cache/restore@v4.2.4
+      uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
       with:
         path: venv
         # yamllint disable-line rule:line-length

.github/workflows/auto-label-pr.yml

@@ -22,17 +22,17 @@ jobs:
     if: github.event.action != 'labeled' || github.event.sender.type != 'Bot'
     steps:
       - name: Checkout
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Generate a token
         id: generate-token
-        uses: actions/create-github-app-token@v2
+        uses: actions/create-github-app-token@67018539274d69449ef7c02e8e71183d1719ab42 # v2
         with:
           app-id: ${{ secrets.ESPHOME_GITHUB_APP_ID }}
           private-key: ${{ secrets.ESPHOME_GITHUB_APP_PRIVATE_KEY }}
 
       - name: Auto Label PR
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ steps.generate-token.outputs.token }}
           script: |
@@ -105,7 +105,9 @@ jobs:
 
             // Calculate data from PR files
             const changedFiles = prFiles.map(file => file.filename);
-            const totalChanges = prFiles.reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
+            const totalAdditions = prFiles.reduce((sum, file) => sum + (file.additions || 0), 0);
+            const totalDeletions = prFiles.reduce((sum, file) => sum + (file.deletions || 0), 0);
+            const totalChanges = totalAdditions + totalDeletions;
 
             console.log('Current labels:', currentLabels.join(', '));
             console.log('Changed files:', changedFiles.length);
@@ -231,16 +233,21 @@ jobs:
             // Strategy: PR size detection
             async function detectPRSize() {
               const labels = new Set();
-              const testChanges = prFiles
-                .filter(file => file.filename.startsWith('tests/'))
-                .reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
-
-              const nonTestChanges = totalChanges - testChanges;
 
               if (totalChanges <= SMALL_PR_THRESHOLD) {
                 labels.add('small-pr');
+                return labels;
               }
 
+              const testAdditions = prFiles
+                .filter(file => file.filename.startsWith('tests/'))
+                .reduce((sum, file) => sum + (file.additions || 0), 0);
+              const testDeletions = prFiles
+                .filter(file => file.filename.startsWith('tests/'))
+                .reduce((sum, file) => sum + (file.deletions || 0), 0);
+
+              const nonTestChanges = (totalAdditions - testAdditions) - (totalDeletions - testDeletions);
+
               // Don't add too-big if mega-pr label is already present
               if (nonTestChanges > TOO_BIG_THRESHOLD && !isMegaPR) {
                 labels.add('too-big');
@@ -375,7 +382,7 @@ jobs:
               const labels = new Set();
 
               // Check for missing tests
-              if ((allLabels.has('new-component') || allLabels.has('new-platform')) && !allLabels.has('has-tests')) {
+              if ((allLabels.has('new-component') || allLabels.has('new-platform') || allLabels.has('new-feature')) && !allLabels.has('has-tests')) {
                 labels.add('needs-tests');
               }
 
@@ -412,10 +419,13 @@ jobs:
 
               // Too big message
               if (finalLabels.includes('too-big')) {
-                const testChanges = prFiles
+                const testAdditions = prFiles
                   .filter(file => file.filename.startsWith('tests/'))
-                  .reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
-                const nonTestChanges = totalChanges - testChanges;
+                  .reduce((sum, file) => sum + (file.additions || 0), 0);
+                const testDeletions = prFiles
+                  .filter(file => file.filename.startsWith('tests/'))
+                  .reduce((sum, file) => sum + (file.deletions || 0), 0);
+                const nonTestChanges = (totalAdditions - testAdditions) - (totalDeletions - testDeletions);
 
                 const tooManyLabels = finalLabels.length > MAX_LABELS;
                 const tooManyChanges = nonTestChanges > TOO_BIG_THRESHOLD;

.github/workflows/ci-api-proto.yml

@@ -21,9 +21,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.11"
 
@@ -47,7 +47,7 @@ jobs:
           fi
       - if: failure()
         name: Review PR
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             await github.rest.pulls.createReview({
@@ -62,7 +62,7 @@ jobs:
         run: git diff
       - if: failure()
         name: Archive artifacts
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: generated-proto-files
           path: |
@@ -70,7 +70,7 @@ jobs:
             esphome/components/api/api_pb2_service.*
       - if: success()
         name: Dismiss review
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             let reviews = await github.rest.pulls.listReviews({

.github/workflows/ci-clang-tidy-hash.yml

@@ -20,10 +20,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Set up Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.11"
 
@@ -41,7 +41,7 @@ jobs:
 
       - if: failure()
         name: Request changes
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             await github.rest.pulls.createReview({
@@ -54,7 +54,7 @@ jobs:
 
       - if: success()
         name: Dismiss review
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             let reviews = await github.rest.pulls.listReviews({

.github/workflows/ci-docker.yml

@@ -43,13 +43,13 @@ jobs:
           - "docker"
           # - "lint"
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.11"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.11.1
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Set TAG
         run: |

.github/workflows/ci.yml

@@ -36,18 +36,18 @@ jobs:
       cache-key: ${{ steps.cache-key.outputs.key }}
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Generate cache-key
         id: cache-key
         run: echo key="${{ hashFiles('requirements.txt', 'requirements_test.txt', '.pre-commit-config.yaml') }}" >> $GITHUB_OUTPUT
       - name: Set up Python ${{ env.DEFAULT_PYTHON }}
         id: python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
       - name: Restore Python virtual environment
         id: cache-venv
-        uses: actions/cache@v4.2.4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: venv
           # yamllint disable-line rule:line-length
@@ -70,7 +70,7 @@ jobs:
     if: needs.determine-jobs.outputs.python-linters == 'true'
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         uses: ./.github/actions/restore-python
         with:
@@ -91,7 +91,7 @@ jobs:
       - common
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         uses: ./.github/actions/restore-python
         with:
@@ -105,6 +105,7 @@ jobs:
           script/ci-custom.py
           script/build_codeowners.py --check
           script/build_language_schema.py --check
+          script/generate-esp32-boards.py --check
 
   pytest:
     name: Run pytest
@@ -136,7 +137,7 @@ jobs:
       - common
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         id: restore-python
         uses: ./.github/actions/restore-python
@@ -156,12 +157,12 @@ jobs:
           . venv/bin/activate
           pytest -vv --cov-report=xml --tb=native -n auto tests --ignore=tests/integration/
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5.4.3
+        uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
       - name: Save Python virtual environment cache
         if: github.ref == 'refs/heads/dev'
-        uses: actions/cache/save@v4.2.4
+        uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: venv
           key: ${{ runner.os }}-${{ steps.restore-python.outputs.python-version }}-venv-${{ needs.common.outputs.cache-key }}
@@ -179,7 +180,7 @@ jobs:
       component-test-count: ${{ steps.determine.outputs.component-test-count }}
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Fetch enough history to find the merge base
           fetch-depth: 2
@@ -214,15 +215,15 @@ jobs:
     if: needs.determine-jobs.outputs.integration-tests == 'true'
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python 3.13
         id: python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.13"
       - name: Restore Python virtual environment
         id: cache-venv
-        uses: actions/cache@v4.2.4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: venv
           key: ${{ runner.os }}-${{ steps.python.outputs.python-version }}-venv-${{ needs.common.outputs.cache-key }}
@@ -287,7 +288,7 @@ jobs:
 
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           # Need history for HEAD~1 to work for checking changed files
           fetch-depth: 2
@@ -300,14 +301,14 @@ jobs:
 
       - name: Cache platformio
         if: github.ref == 'refs/heads/dev'
-        uses: actions/cache@v4.2.4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: ~/.platformio
           key: platformio-${{ matrix.pio_cache_key }}-${{ hashFiles('platformio.ini') }}
 
       - name: Cache platformio
         if: github.ref != 'refs/heads/dev'
-        uses: actions/cache/restore@v4.2.4
+        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: ~/.platformio
           key: platformio-${{ matrix.pio_cache_key }}-${{ hashFiles('platformio.ini') }}
@@ -374,7 +375,7 @@ jobs:
           sudo apt-get install libsdl2-dev
 
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         uses: ./.github/actions/restore-python
         with:
@@ -400,7 +401,7 @@ jobs:
       matrix: ${{ steps.split.outputs.components }}
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Split components into 20 groups
         id: split
         run: |
@@ -430,7 +431,7 @@ jobs:
           sudo apt-get install libsdl2-dev
 
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         uses: ./.github/actions/restore-python
         with:
@@ -459,16 +460,16 @@ jobs:
     if: github.event_name == 'pull_request' && github.base_ref != 'beta' && github.base_ref != 'release'
     steps:
       - name: Check out code from GitHub
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Restore Python
         uses: ./.github/actions/restore-python
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
           cache-key: ${{ needs.common.outputs.cache-key }}
-      - uses: pre-commit/action@v3.0.1
+      - uses: esphome/action@43cd1109c09c544d97196f7730ee5b2e0cc6d81e # v3.0.1 fork with pinned actions/cache
         env:
           SKIP: pylint,clang-tidy-hash
-      - uses: pre-commit-ci/lite-action@v1.1.0
+      - uses: pre-commit-ci/lite-action@5d6cc0eb514c891a40562a58a8e71576c5c7fb43 # v1.1.0
         if: always()
 
   ci-status:

.github/workflows/codeowner-review-request.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Request reviews from component codeowners
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             const owner = context.repo.owner;

.github/workflows/codeql.yml

@@ -54,11 +54,11 @@ jobs:
             # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@64d10c13136e1c5bce3e5fbde8d4906eeaafc885 # v3.30.6
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
@@ -86,6 +86,6 @@ jobs:
           exit 1
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@64d10c13136e1c5bce3e5fbde8d4906eeaafc885 # v3.30.6
         with:
           category: "/language:${{matrix.language}}"

.github/workflows/external-component-bot.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Add external component comment
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/issue-codeowner-notify.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Notify codeowners for component issues
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             const owner = context.repo.owner;

.github/workflows/needs-docs.yml

@@ -1,24 +0,0 @@
-name: Needs Docs
-
-on:
-  pull_request:
-    types: [labeled, unlabeled]
-
-jobs:
-  check:
-    name: Check
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check for needs-docs label
-        uses: actions/github-script@v7.0.1
-        with:
-          script: |
-            const { data: labels } = await github.rest.issues.listLabelsOnIssue({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: context.issue.number
-            });
-            const needsDocs = labels.find(label => label.name === 'needs-docs');
-            if (needsDocs) {
-              core.setFailed('Pull request needs docs');
-            }

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
       branch_build: ${{ steps.tag.outputs.branch_build }}
       deploy_env: ${{ steps.tag.outputs.deploy_env }}
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Get tag
         id: tag
         # yamllint disable rule:line-length
@@ -60,9 +60,9 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.x"
       - name: Build
@@ -70,7 +70,7 @@ jobs:
           pip3 install build
           python3 -m build
       - name: Publish
-        uses: pypa/gh-action-pypi-publish@v1.12.4
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
         with:
           skip-existing: true
 
@@ -92,22 +92,22 @@ jobs:
             os: "ubuntu-24.04-arm"
 
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: "3.11"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.11.1
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Log in to docker hub
-        uses: docker/login-action@v3.5.0
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Log in to the GitHub container registry
-        uses: docker/login-action@v3.5.0
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -138,7 +138,7 @@ jobs:
       #     version: ${{ needs.init.outputs.tag }}
 
       - name: Upload digests
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: digests-${{ matrix.platform.arch }}
           path: /tmp/digests
@@ -168,27 +168,27 @@ jobs:
           - ghcr
           - dockerhub
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Download digests
-        uses: actions/download-artifact@v5.0.0
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
         with:
           pattern: digests-*
           path: /tmp/digests
           merge-multiple: true
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.11.1
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
 
       - name: Log in to docker hub
         if: matrix.registry == 'dockerhub'
-        uses: docker/login-action@v3.5.0
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Log in to the GitHub container registry
         if: matrix.registry == 'ghcr'
-        uses: docker/login-action@v3.5.0
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -220,7 +220,7 @@ jobs:
       - deploy-manifest
     steps:
       - name: Trigger Workflow
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.DEPLOY_HA_ADDON_REPO_TOKEN }}
           script: |
@@ -246,7 +246,7 @@ jobs:
     environment: ${{ needs.init.outputs.deploy_env }}
     steps:
       - name: Trigger Workflow
-        uses: actions/github-script@v7.0.1
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           github-token: ${{ secrets.DEPLOY_ESPHOME_SCHEMA_REPO_TOKEN }}
           script: |

.github/workflows/stale.yml

@@ -15,36 +15,52 @@ concurrency:
 
 jobs:
   stale:
+    if: github.repository_owner == 'esphome'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v9.1.0
+      - name: Stale
+        uses: actions/stale@3a9db7e6a41a89f618792c92c0e97cc736e1b13f # v10.0.0
         with:
+          debug-only: ${{ github.ref != 'refs/heads/dev' }} # Dry-run when not run on dev branch
+          remove-stale-when-updated: true
+          operations-per-run: 150
+
+          # The 90 day stale policy for PRs
+          # - PRs
+          # - No PRs marked as "not-stale"
+          # - No Issues (see below)
           days-before-pr-stale: 90
           days-before-pr-close: 7
-          days-before-issue-stale: -1
-          days-before-issue-close: -1
-          remove-stale-when-updated: true
           stale-pr-label: "stale"
           exempt-pr-labels: "not-stale"
           stale-pr-message: >
             There hasn't been any activity on this pull request recently. This
             pull request has been automatically marked as stale because of that
             and will be closed if no further activity occurs within 7 days.
-            Thank you for your contributions.
 
-  # Use stale to automatically close issues with a
-  # reference to the issue tracker
-  close-issues:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/stale@v9.1.0
-        with:
-          days-before-pr-stale: -1
-          days-before-pr-close: -1
-          days-before-issue-stale: 1
-          days-before-issue-close: 1
-          remove-stale-when-updated: true
+            If you are the author of this PR, please leave a comment if you want
+            to keep it open. Also, please rebase your PR onto the latest dev
+            branch to ensure that it's up to date with the latest changes.
+
+            Thank you for your contribution!
+
+          # The 90 day stale policy for Issues
+          # - Issues
+          # - No Issues marked as "not-stale"
+          # - No PRs (see above)
+          days-before-issue-stale: 90
+          days-before-issue-close: 7
           stale-issue-label: "stale"
           exempt-issue-labels: "not-stale"
           stale-issue-message: >
-            https://github.com/esphome/esphome/issues/430
+            There hasn't been any activity on this issue recently. Due to the
+            high number of incoming GitHub notifications, we have to clean some
+            of the old issues, as many of them have already been resolved with
+            the latest updates.
+
+            Please make sure to update to the latest ESPHome version and
+            check if that solves the issue. Let us know if that works for you by
+            adding a comment 👍
+
+            This issue has now been marked as stale and will be closed if no
+            further activity occurs. Thank you for your contributions.

.github/workflows/status-check-labels.yml

@@ -0,0 +1,30 @@
+name: Status check labels
+
+on:
+  pull_request:
+    types: [labeled, unlabeled]
+
+jobs:
+  check:
+    name: Check ${{ matrix.label }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        label:
+          - needs-docs
+          - merge-after-release
+    steps:
+      - name: Check for ${{ matrix.label }} label
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        with:
+          script: |
+            const { data: labels } = await github.rest.issues.listLabelsOnIssue({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number
+            });
+            const hasLabel = labels.find(label => label.name === '${{ matrix.label }}');
+            if (hasLabel) {
+              core.setFailed('Pull request cannot be merged, it is labeled as ${{ matrix.label }}');
+            }

.github/workflows/sync-device-classes.yml

@@ -13,16 +13,16 @@ jobs:
     if: github.repository == 'esphome/esphome'
     steps:
       - name: Checkout
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Checkout Home Assistant
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           repository: home-assistant/core
           path: lib/home-assistant
 
       - name: Setup Python
-        uses: actions/setup-python@v5.6.0
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
           python-version: 3.13
 
@@ -30,13 +30,18 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -e lib/home-assistant
+          pip install -r requirements_test.txt pre-commit
 
       - name: Sync
         run: |
           python ./script/sync-device_class.py
 
+      - name: Run pre-commit hooks
+        run: |
+          python script/run-in-env.py pre-commit run --all-files
+
       - name: Commit changes
-        uses: peter-evans/create-pull-request@v7.0.8
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           commit-message: "Synchronise Device Classes from Home Assistant"
           committer: esphomebot <esphome@openhomefoundation.org>

.pre-commit-config.yaml

@@ -11,7 +11,7 @@ ci:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.12.9
+    rev: v0.13.2
     hooks:
       # Run the linter.
       - id: ruff

CODEOWNERS

@@ -66,7 +66,7 @@ esphome/components/binary_sensor/* @esphome/core
 esphome/components/bk72xx/* @kuba2k2
 esphome/components/bl0906/* @athom-tech @jesserockz @tarontop
 esphome/components/bl0939/* @ziceva
-esphome/components/bl0940/* @tobias-
+esphome/components/bl0940/* @dan-s-github @tobias-
 esphome/components/bl0942/* @dbuezas @dwmw2
 esphome/components/ble_client/* @buxtronix @clydebarrow
 esphome/components/bluetooth_proxy/* @bdraco @jesserockz
@@ -88,7 +88,8 @@ esphome/components/bp1658cj/* @Cossid
 esphome/components/bp5758d/* @Cossid
 esphome/components/button/* @esphome/core
 esphome/components/bytebuffer/* @clydebarrow
-esphome/components/camera/* @DT-art1 @bdraco
+esphome/components/camera/* @bdraco @DT-art1
+esphome/components/camera_encoder/* @DT-art1
 esphome/components/canbus/* @danielschramm @mvturnho
 esphome/components/cap1188/* @mreditor97
 esphome/components/captive_portal/* @esphome/core
@@ -144,9 +145,9 @@ esphome/components/es8156/* @kbx81
 esphome/components/es8311/* @kahrendt @kroimon
 esphome/components/es8388/* @P4uLT
 esphome/components/esp32/* @esphome/core
-esphome/components/esp32_ble/* @Rapsssito @bdraco @jesserockz
+esphome/components/esp32_ble/* @bdraco @jesserockz @Rapsssito
 esphome/components/esp32_ble_client/* @bdraco @jesserockz
-esphome/components/esp32_ble_server/* @Rapsssito @clydebarrow @jesserockz
+esphome/components/esp32_ble_server/* @clydebarrow @jesserockz @Rapsssito
 esphome/components/esp32_ble_tracker/* @bdraco
 esphome/components/esp32_camera_web_server/* @ayufan
 esphome/components/esp32_can/* @Sympatron
@@ -159,14 +160,13 @@ esphome/components/esp_ldo/* @clydebarrow
 esphome/components/espnow/* @jesserockz
 esphome/components/ethernet_info/* @gtjadsonsantos
 esphome/components/event/* @nohat
-esphome/components/event_emitter/* @Rapsssito
 esphome/components/exposure_notifications/* @OttoWinter
 esphome/components/ezo/* @ssieb
 esphome/components/ezo_pmp/* @carlos-sarmiento
 esphome/components/factory_reset/* @anatoly-savchenkov
 esphome/components/fastled_base/* @OttoWinter
 esphome/components/feedback/* @ianchi
-esphome/components/fingerprint_grow/* @OnFreund @alexborro @loongyh
+esphome/components/fingerprint_grow/* @alexborro @loongyh @OnFreund
 esphome/components/font/* @clydebarrow @esphome/core
 esphome/components/fs3000/* @kahrendt
 esphome/components/ft5x06/* @clydebarrow
@@ -202,7 +202,7 @@ esphome/components/heatpumpir/* @rob-deutsch
 esphome/components/hitachi_ac424/* @sourabhjaiswal
 esphome/components/hm3301/* @freekode
 esphome/components/hmac_md5/* @dwmw2
-esphome/components/homeassistant/* @OttoWinter @esphome/core
+esphome/components/homeassistant/* @esphome/core @OttoWinter
 esphome/components/homeassistant/number/* @landonr
 esphome/components/homeassistant/switch/* @Links2004
 esphome/components/honeywell_hih_i2c/* @Benichou34
@@ -227,13 +227,13 @@ esphome/components/iaqcore/* @yozik04
 esphome/components/ili9xxx/* @clydebarrow @nielsnl68
 esphome/components/improv_base/* @esphome/core
 esphome/components/improv_serial/* @esphome/core
-esphome/components/ina226/* @Sergio303 @latonita
+esphome/components/ina226/* @latonita @Sergio303
 esphome/components/ina260/* @mreditor97
 esphome/components/ina2xx_base/* @latonita
 esphome/components/ina2xx_i2c/* @latonita
 esphome/components/ina2xx_spi/* @latonita
 esphome/components/inkbird_ibsth1_mini/* @fkirill
-esphome/components/inkplate6/* @jesserockz
+esphome/components/inkplate/* @jesserockz @JosipKuci
 esphome/components/integration/* @OttoWinter
 esphome/components/internal_temperature/* @Mat931
 esphome/components/interval/* @esphome/core
@@ -276,8 +276,8 @@ esphome/components/max7219digit/* @rspaargaren
 esphome/components/max9611/* @mckaymatthew
 esphome/components/mcp23008/* @jesserockz
 esphome/components/mcp23017/* @jesserockz
-esphome/components/mcp23s08/* @SenexCrenshaw @jesserockz
-esphome/components/mcp23s17/* @SenexCrenshaw @jesserockz
+esphome/components/mcp23s08/* @jesserockz @SenexCrenshaw
+esphome/components/mcp23s17/* @jesserockz @SenexCrenshaw
 esphome/components/mcp23x08_base/* @jesserockz
 esphome/components/mcp23x17_base/* @jesserockz
 esphome/components/mcp23xxx_base/* @jesserockz
@@ -298,6 +298,7 @@ esphome/components/mics_4514/* @jesserockz
 esphome/components/midea/* @dudanov
 esphome/components/midea_ir/* @dudanov
 esphome/components/mipi_dsi/* @clydebarrow
+esphome/components/mipi_rgb/* @clydebarrow
 esphome/components/mipi_spi/* @clydebarrow
 esphome/components/mitsubishi/* @RubyBailey
 esphome/components/mixer/speaker/* @kahrendt
@@ -341,7 +342,7 @@ esphome/components/ota/* @esphome/core
 esphome/components/output/* @esphome/core
 esphome/components/packet_transport/* @clydebarrow
 esphome/components/pca6416a/* @Mat931
-esphome/components/pca9554/* @clydebarrow @hwstar
+esphome/components/pca9554/* @bdraco @clydebarrow @hwstar
 esphome/components/pcf85063/* @brogon
 esphome/components/pcf8563/* @KoenBreeman
 esphome/components/pi4ioe5v6408/* @jesserockz
@@ -352,9 +353,9 @@ esphome/components/pm2005/* @andrewjswan
 esphome/components/pmsa003i/* @sjtrny
 esphome/components/pmsx003/* @ximex
 esphome/components/pmwcs3/* @SeByDocKy
-esphome/components/pn532/* @OttoWinter @jesserockz
-esphome/components/pn532_i2c/* @OttoWinter @jesserockz
-esphome/components/pn532_spi/* @OttoWinter @jesserockz
+esphome/components/pn532/* @jesserockz @OttoWinter
+esphome/components/pn532_i2c/* @jesserockz @OttoWinter
+esphome/components/pn532_spi/* @jesserockz @OttoWinter
 esphome/components/pn7150/* @jesserockz @kbx81
 esphome/components/pn7150_i2c/* @jesserockz @kbx81
 esphome/components/pn7160/* @jesserockz @kbx81
@@ -363,7 +364,7 @@ esphome/components/pn7160_spi/* @jesserockz @kbx81
 esphome/components/power_supply/* @esphome/core
 esphome/components/preferences/* @esphome/core
 esphome/components/psram/* @esphome/core
-esphome/components/pulse_meter/* @TrentHouliston @cstaahl @stevebaxter
+esphome/components/pulse_meter/* @cstaahl @stevebaxter @TrentHouliston
 esphome/components/pvvx_mithermometer/* @pasiz
 esphome/components/pylontech/* @functionpointer
 esphome/components/qmp6988/* @andrewpc
@@ -404,7 +405,8 @@ esphome/components/sensirion_common/* @martgras
 esphome/components/sensor/* @esphome/core
 esphome/components/sfa30/* @ghsensdev
 esphome/components/sgp40/* @SenexCrenshaw
-esphome/components/sgp4x/* @SenexCrenshaw @martgras
+esphome/components/sgp4x/* @martgras @SenexCrenshaw
+esphome/components/sha256/* @esphome/core
 esphome/components/shelly_dimmer/* @edge90 @rnauber
 esphome/components/sht3xd/* @mrtoy-me
 esphome/components/sht4x/* @sjtrny
@@ -531,6 +533,7 @@ esphome/components/wk2204_spi/* @DrCoolZic
 esphome/components/wk2212_i2c/* @DrCoolZic
 esphome/components/wk2212_spi/* @DrCoolZic
 esphome/components/wl_134/* @hobbypunk90
+esphome/components/wts01/* @alepee
 esphome/components/x9c/* @EtienneMD
 esphome/components/xgzp68xx/* @gcormier
 esphome/components/xiaomi_hhccjcy10/* @fariouche
@@ -546,3 +549,4 @@ esphome/components/xxtea/* @clydebarrow
 esphome/components/zephyr/* @tomaszduda23
 esphome/components/zhlt01/* @cfeenstra1024
 esphome/components/zio_ultrasonic/* @kahrendt
+esphome/components/zwave_proxy/* @kbx81

Doxyfile

@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2025.9.0-dev
+PROJECT_NUMBER         = 2025.10.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

esphome/__main__.py

@@ -6,6 +6,7 @@ import getpass
 import importlib
 import logging
 import os
+from pathlib import Path
 import re
 import sys
 import time
@@ -15,9 +16,11 @@ import argcomplete
 
 from esphome import const, writer, yaml_util
 import esphome.codegen as cg
+from esphome.components.mqtt import CONF_DISCOVER_IP
 from esphome.config import iter_component_configs, read_config, strip_default_ids
 from esphome.const import (
     ALLOWED_NAME_CHARS,
+    CONF_API,
     CONF_BAUD_RATE,
     CONF_BROKER,
     CONF_DEASSERT_RTS_DTR,
@@ -43,6 +46,7 @@ from esphome.const import (
     SECRETS_FILES,
 )
 from esphome.core import CORE, EsphomeError, coroutine
+from esphome.enum import StrEnum
 from esphome.helpers import get_bool_env, indent, is_ip_address
 from esphome.log import AnsiFore, color, setup_log
 from esphome.types import ConfigType
@@ -106,13 +110,23 @@ def choose_prompt(options, purpose: str = None):
     return options[opt - 1][1]
 
 
+class Purpose(StrEnum):
+    UPLOADING = "uploading"
+    LOGGING = "logging"
+
+
+def _resolve_with_cache(address: str, purpose: Purpose) -> list[str]:
+    """Resolve an address using cache if available, otherwise return the address itself."""
+    if CORE.address_cache and (cached := CORE.address_cache.get_addresses(address)):
+        _LOGGER.debug("Using cached addresses for %s: %s", purpose.value, cached)
+        return cached
+    return [address]
+
+
 def choose_upload_log_host(
     default: list[str] | str | None,
     check_default: str | None,
-    show_ota: bool,
-    show_mqtt: bool,
-    show_api: bool,
-    purpose: str | None = None,
+    purpose: Purpose,
 ) -> list[str]:
     # Convert to list for uniform handling
     defaults = [default] if isinstance(default, str) else default or []
@@ -132,53 +146,144 @@ def choose_upload_log_host(
                 ]
                 resolved.append(choose_prompt(options, purpose=purpose))
             elif device == "OTA":
-                if (show_ota and "ota" in CORE.config) or (
-                    show_api and "api" in CORE.config
+                # ensure IP adresses are used first
+                if is_ip_address(CORE.address) and (
+                    (purpose == Purpose.LOGGING and has_api())
+                    or (purpose == Purpose.UPLOADING and has_ota())
                 ):
-                    resolved.append(CORE.address)
-                elif show_mqtt and has_mqtt_logging():
-                    resolved.append("MQTT")
+                    resolved.extend(_resolve_with_cache(CORE.address, purpose))
+
+                if purpose == Purpose.LOGGING:
+                    if has_api() and has_mqtt_ip_lookup():
+                        resolved.append("MQTTIP")
+
+                    if has_mqtt_logging():
+                        resolved.append("MQTT")
+
+                    if has_api() and has_non_ip_address():
+                        resolved.extend(_resolve_with_cache(CORE.address, purpose))
+
+                elif purpose == Purpose.UPLOADING:
+                    if has_ota() and has_mqtt_ip_lookup():
+                        resolved.append("MQTTIP")
+
+                    if has_ota() and has_non_ip_address():
+                        resolved.extend(_resolve_with_cache(CORE.address, purpose))
             else:
                 resolved.append(device)
+        if not resolved:
+            _LOGGER.error("All specified devices: %s could not be resolved.", defaults)
         return resolved
 
     # No devices specified, show interactive chooser
     options = [
         (f"{port.path} ({port.description})", port.path) for port in get_serial_ports()
     ]
-    if (show_ota and "ota" in CORE.config) or (show_api and "api" in CORE.config):
-        options.append((f"Over The Air ({CORE.address})", CORE.address))
-    if show_mqtt and has_mqtt_logging():
-        mqtt_config = CORE.config[CONF_MQTT]
-        options.append((f"MQTT ({mqtt_config[CONF_BROKER]})", "MQTT"))
+
+    if purpose == Purpose.LOGGING:
+        if has_mqtt_logging():
+            mqtt_config = CORE.config[CONF_MQTT]
+            options.append((f"MQTT ({mqtt_config[CONF_BROKER]})", "MQTT"))
+
+        if has_api():
+            if has_resolvable_address():
+                options.append((f"Over The Air ({CORE.address})", CORE.address))
+            if has_mqtt_ip_lookup():
+                options.append(("Over The Air (MQTT IP lookup)", "MQTTIP"))
+
+    elif purpose == Purpose.UPLOADING and has_ota():
+        if has_resolvable_address():
+            options.append((f"Over The Air ({CORE.address})", CORE.address))
+        if has_mqtt_ip_lookup():
+            options.append(("Over The Air (MQTT IP lookup)", "MQTTIP"))
 
     if check_default is not None and check_default in [opt[1] for opt in options]:
         return [check_default]
     return [choose_prompt(options, purpose=purpose)]
 
 
-def mqtt_logging_enabled(mqtt_config):
+def has_mqtt_logging() -> bool:
+    """Check if MQTT logging is available."""
+    if CONF_MQTT not in CORE.config:
+        return False
+
+    mqtt_config = CORE.config[CONF_MQTT]
+
+    # enabled by default
+    if CONF_LOG_TOPIC not in mqtt_config:
+        return True
+
     log_topic = mqtt_config[CONF_LOG_TOPIC]
     if log_topic is None:
         return False
+
     if CONF_TOPIC not in log_topic:
         return False
+
     return log_topic.get(CONF_LEVEL, None) != "NONE"
 
 
-def has_mqtt_logging() -> bool:
-    """Check if MQTT logging is available."""
-    return (mqtt_config := CORE.config.get(CONF_MQTT)) and mqtt_logging_enabled(
-        mqtt_config
-    )
+def has_mqtt() -> bool:
+    """Check if MQTT is available."""
+    return CONF_MQTT in CORE.config
+
+
+def has_api() -> bool:
+    """Check if API is available."""
+    return CONF_API in CORE.config
+
+
+def has_ota() -> bool:
+    """Check if OTA is available."""
+    return CONF_OTA in CORE.config
+
+
+def has_mqtt_ip_lookup() -> bool:
+    """Check if MQTT is available and IP lookup is supported."""
+    if CONF_MQTT not in CORE.config:
+        return False
+    # Default Enabled
+    if CONF_DISCOVER_IP not in CORE.config[CONF_MQTT]:
+        return True
+    return CORE.config[CONF_MQTT][CONF_DISCOVER_IP]
+
+
+def has_mdns() -> bool:
+    """Check if MDNS is available."""
+    return CONF_MDNS not in CORE.config or not CORE.config[CONF_MDNS][CONF_DISABLED]
+
+
+def has_non_ip_address() -> bool:
+    """Check if CORE.address is set and is not an IP address."""
+    return CORE.address is not None and not is_ip_address(CORE.address)
+
+
+def has_ip_address() -> bool:
+    """Check if CORE.address is a valid IP address."""
+    return CORE.address is not None and is_ip_address(CORE.address)
+
+
+def has_resolvable_address() -> bool:
+    """Check if CORE.address is resolvable (via mDNS or is an IP address)."""
+    return has_mdns() or has_ip_address()
+
+
+def mqtt_get_ip(config: ConfigType, username: str, password: str, client_id: str):
+    from esphome import mqtt
+
+    return mqtt.get_esphome_device_ip(config, username, password, client_id)
+
+
+_PORT_TO_PORT_TYPE = {
+    "MQTT": "MQTT",
+    "MQTTIP": "MQTTIP",
+}
 
 
 def get_port_type(port: str) -> str:
     if port.startswith("/") or port.startswith("COM"):
         return "SERIAL"
-    if port == "MQTT":
-        return "MQTT"
-    return "NETWORK"
+    return _PORT_TO_PORT_TYPE.get(port, "NETWORK")
 
 
 def run_miniterm(config: ConfigType, port: str, args) -> int:
@@ -223,7 +328,9 @@ def run_miniterm(config: ConfigType, port: str, args) -> int:
                         .replace(b"\n", b"")
                         .decode("utf8", "backslashreplace")
                     )
-                    time_str = datetime.now().time().strftime("[%H:%M:%S]")
+                    time_ = datetime.now()
+                    nanoseconds = time_.microsecond // 1000
+                    time_str = f"[{time_.hour:02}:{time_.minute:02}:{time_.second:02}.{nanoseconds:03}]"
                     safe_print(parser.parse_line(line, time_str))
 
                     backtrace_state = platformio_api.process_stacktrace(
@@ -346,7 +453,7 @@ def upload_using_esptool(
             "detect",
         ]
         for img in flash_images:
-            cmd += [img.offset, img.path]
+            cmd += [img.offset, str(img.path)]
 
         if os.environ.get("ESPHOME_USE_SUBPROCESS") is None:
             import esptool
@@ -393,27 +500,29 @@ def check_permissions(port: str):
             )
 
 
-def upload_program(config: ConfigType, args: ArgsProtocol, host: str) -> int | str:
+def upload_program(
+    config: ConfigType, args: ArgsProtocol, devices: list[str]
+) -> tuple[int, str | None]:
+    host = devices[0]
     try:
         module = importlib.import_module("esphome.components." + CORE.target_platform)
         if getattr(module, "upload_program")(config, args, host):
-            return 0
+            return 0, host
     except AttributeError:
         pass
 
     if get_port_type(host) == "SERIAL":
         check_permissions(host)
+
+        exit_code = 1
         if CORE.target_platform in (PLATFORM_ESP32, PLATFORM_ESP8266):
             file = getattr(args, "file", None)
-            return upload_using_esptool(config, host, file, args.upload_speed)
+            exit_code = upload_using_esptool(config, host, file, args.upload_speed)
+        elif CORE.target_platform == PLATFORM_RP2040 or CORE.is_libretiny:
+            exit_code = upload_using_platformio(config, host)
+        # else: Unknown target platform, exit_code remains 1
 
-        if CORE.target_platform in (PLATFORM_RP2040):
-            return upload_using_platformio(config, host)
-
-        if CORE.is_libretiny:
-            return upload_using_platformio(config, host)
-
-        return 1  # Unknown target platform
+        return exit_code, host if exit_code == 0 else None
 
     ota_conf = {}
     for ota_item in config.get(CONF_OTA, []):
@@ -430,31 +539,26 @@ def upload_program(config: ConfigType, args: ArgsProtocol, host: str) -> int | s
 
     remote_port = int(ota_conf[CONF_PORT])
     password = ota_conf.get(CONF_PASSWORD, "")
-
-    # Check if we should use MQTT for address resolution
-    # This happens when no device was specified, or the current host is "MQTT"/"OTA"
-    devices: list[str] = args.device or []
-    if (
-        CONF_MQTT in config  # pylint: disable=too-many-boolean-expressions
-        and (not devices or host in ("MQTT", "OTA"))
-        and (
-            ((config[CONF_MDNS][CONF_DISABLED]) and not is_ip_address(CORE.address))
-            or get_port_type(host) == "MQTT"
-        )
-    ):
-        from esphome import mqtt
-
-        host = mqtt.get_esphome_device_ip(
-            config, args.username, args.password, args.client_id
-        )
-
     if getattr(args, "file", None) is not None:
-        return espota2.run_ota(host, remote_port, password, args.file)
+        binary = Path(args.file)
+    else:
+        binary = CORE.firmware_bin
 
-    return espota2.run_ota(host, remote_port, password, CORE.firmware_bin)
+    # MQTT address resolution
+    if get_port_type(host) in ("MQTT", "MQTTIP"):
+        devices = mqtt_get_ip(config, args.username, args.password, args.client_id)
+
+    return espota2.run_ota(devices, remote_port, password, binary)
 
 
 def show_logs(config: ConfigType, args: ArgsProtocol, devices: list[str]) -> int | None:
+    try:
+        module = importlib.import_module("esphome.components." + CORE.target_platform)
+        if getattr(module, "show_logs")(config, args, devices):
+            return 0
+    except AttributeError:
+        pass
+
     if "logger" not in config:
         raise EsphomeError("Logger is not configured!")
 
@@ -463,20 +567,28 @@ def show_logs(config: ConfigType, args: ArgsProtocol, devices: list[str]) -> int
     if get_port_type(port) == "SERIAL":
         check_permissions(port)
         return run_miniterm(config, port, args)
-    if get_port_type(port) == "NETWORK" and "api" in config:
-        addresses_to_use = devices
-        if config[CONF_MDNS][CONF_DISABLED] and CONF_MQTT in config:
-            from esphome import mqtt
 
-            mqtt_address = mqtt.get_esphome_device_ip(
+    port_type = get_port_type(port)
+
+    # Check if we should use API for logging
+    if has_api():
+        addresses_to_use: list[str] | None = None
+
+        if port_type == "NETWORK" and (has_mdns() or is_ip_address(port)):
+            addresses_to_use = devices
+        elif port_type in ("NETWORK", "MQTT", "MQTTIP") and has_mqtt_ip_lookup():
+            # Only use MQTT IP lookup if the first condition didn't match
+            # (for MQTT/MQTTIP types, or for NETWORK when mdns/ip check fails)
+            addresses_to_use = mqtt_get_ip(
                 config, args.username, args.password, args.client_id
-            )[0]
-            addresses_to_use = [mqtt_address]
+            )
 
-        from esphome.components.api.client import run_logs
+        if addresses_to_use is not None:
+            from esphome.components.api.client import run_logs
 
-        return run_logs(config, addresses_to_use)
-    if get_port_type(port) == "MQTT" and "mqtt" in config:
+            return run_logs(config, addresses_to_use)
+
+    if port_type in ("NETWORK", "MQTT") and has_mqtt_logging():
         from esphome import mqtt
 
         return mqtt.show_logs(
@@ -497,7 +609,7 @@ def clean_mqtt(config: ConfigType, args: ArgsProtocol) -> int | None:
 def command_wizard(args: ArgsProtocol) -> int | None:
     from esphome import wizard
 
-    return wizard.wizard(args.configuration)
+    return wizard.wizard(Path(args.configuration))
 
 
 def command_config(args: ArgsProtocol, config: ConfigType) -> int | None:
@@ -524,6 +636,13 @@ def command_vscode(args: ArgsProtocol) -> int | None:
 
 
 def command_compile(args: ArgsProtocol, config: ConfigType) -> int | None:
+    # Set memory analysis options in config
+    if args.analyze_memory:
+        config.setdefault(CONF_ESPHOME, {})["analyze_memory"] = True
+
+    if args.memory_report:
+        config.setdefault(CONF_ESPHOME, {})["memory_report_file"] = args.memory_report
+
     exit_code = write_cpp(config)
     if exit_code != 0:
         return exit_code
@@ -542,23 +661,14 @@ def command_upload(args: ArgsProtocol, config: ConfigType) -> int | None:
     devices = choose_upload_log_host(
         default=args.device,
         check_default=None,
-        show_ota=True,
-        show_mqtt=False,
-        show_api=False,
-        purpose="uploading",
+        purpose=Purpose.UPLOADING,
     )
 
-    # Try each device until one succeeds
-    exit_code = 1
-    for device in devices:
-        _LOGGER.info("Uploading to %s", device)
-        exit_code = upload_program(config, args, device)
-        if exit_code == 0:
-            _LOGGER.info("Successfully uploaded program.")
-            return 0
-        if len(devices) > 1:
-            _LOGGER.warning("Failed to upload to %s", device)
-
+    exit_code, _ = upload_program(config, args, devices)
+    if exit_code == 0:
+        _LOGGER.info("Successfully uploaded program.")
+    else:
+        _LOGGER.warning("Failed to upload to %s", devices)
     return exit_code
 
 
@@ -576,10 +686,7 @@ def command_logs(args: ArgsProtocol, config: ConfigType) -> int | None:
     devices = choose_upload_log_host(
         default=args.device,
         check_default=None,
-        show_ota=False,
-        show_mqtt=True,
-        show_api=True,
-        purpose="logging",
+        purpose=Purpose.LOGGING,
     )
     return show_logs(config, args, devices)
 
@@ -605,25 +712,14 @@ def command_run(args: ArgsProtocol, config: ConfigType) -> int | None:
     devices = choose_upload_log_host(
         default=args.device,
         check_default=None,
-        show_ota=True,
-        show_mqtt=False,
-        show_api=True,
-        purpose="uploading",
+        purpose=Purpose.UPLOADING,
     )
 
-    # Try each device for upload until one succeeds
-    successful_device: str | None = None
-    for device in devices:
-        _LOGGER.info("Uploading to %s", device)
-        exit_code = upload_program(config, args, device)
-        if exit_code == 0:
-            _LOGGER.info("Successfully uploaded program.")
-            successful_device = device
-            break
-        if len(devices) > 1:
-            _LOGGER.warning("Failed to upload to %s", device)
-
-    if successful_device is None:
+    exit_code, successful_device = upload_program(config, args, devices)
+    if exit_code == 0:
+        _LOGGER.info("Successfully uploaded program.")
+    else:
+        _LOGGER.warning("Failed to upload to %s", devices)
         return exit_code
 
     if args.no_logs:
@@ -633,10 +729,7 @@ def command_run(args: ArgsProtocol, config: ConfigType) -> int | None:
     devices = choose_upload_log_host(
         default=successful_device,
         check_default=successful_device,
-        show_ota=False,
-        show_mqtt=True,
-        show_api=True,
-        purpose="logging",
+        purpose=Purpose.LOGGING,
     )
     return show_logs(config, args, devices)
 
@@ -645,6 +738,16 @@ def command_clean_mqtt(args: ArgsProtocol, config: ConfigType) -> int | None:
     return clean_mqtt(config, args)
 
 
+def command_clean_all(args: ArgsProtocol) -> int | None:
+    try:
+        writer.clean_all(args.configuration)
+    except OSError as err:
+        _LOGGER.error("Error cleaning all files: %s", err)
+        return 1
+    _LOGGER.info("Done!")
+    return 0
+
+
 def command_mqtt_fingerprint(args: ArgsProtocol, config: ConfigType) -> int | None:
     from esphome import mqtt
 
@@ -686,7 +789,7 @@ def command_update_all(args: ArgsProtocol) -> int | None:
         safe_print(f"{half_line}{middle_text}{half_line}")
 
     for f in files:
-        safe_print(f"Updating {color(AnsiFore.CYAN, f)}")
+        safe_print(f"Updating {color(AnsiFore.CYAN, str(f))}")
         safe_print("-" * twidth)
         safe_print()
         if CORE.dashboard:
@@ -698,10 +801,10 @@ def command_update_all(args: ArgsProtocol) -> int | None:
                 "esphome", "run", f, "--no-logs", "--device", "OTA"
             )
         if rc == 0:
-            print_bar(f"[{color(AnsiFore.BOLD_GREEN, 'SUCCESS')}] {f}")
+            print_bar(f"[{color(AnsiFore.BOLD_GREEN, 'SUCCESS')}] {str(f)}")
             success[f] = True
         else:
-            print_bar(f"[{color(AnsiFore.BOLD_RED, 'ERROR')}] {f}")
+            print_bar(f"[{color(AnsiFore.BOLD_RED, 'ERROR')}] {str(f)}")
             success[f] = False
 
         safe_print()
@@ -712,9 +815,9 @@ def command_update_all(args: ArgsProtocol) -> int | None:
     failed = 0
     for f in files:
         if success[f]:
-            safe_print(f"  - {f}: {color(AnsiFore.GREEN, 'SUCCESS')}")
+            safe_print(f"  - {str(f)}: {color(AnsiFore.GREEN, 'SUCCESS')}")
         else:
-            safe_print(f"  - {f}: {color(AnsiFore.BOLD_RED, 'FAILED')}")
+            safe_print(f"  - {str(f)}: {color(AnsiFore.BOLD_RED, 'FAILED')}")
             failed += 1
     return failed
 
@@ -736,7 +839,8 @@ def command_idedata(args: ArgsProtocol, config: ConfigType) -> int:
 
 
 def command_rename(args: ArgsProtocol, config: ConfigType) -> int | None:
-    for c in args.name:
+    new_name = args.name
+    for c in new_name:
         if c not in ALLOWED_NAME_CHARS:
             print(
                 color(
@@ -747,8 +851,7 @@ def command_rename(args: ArgsProtocol, config: ConfigType) -> int | None:
             )
             return 1
     # Load existing yaml file
-    with open(CORE.config_path, mode="r+", encoding="utf-8") as raw_file:
-        raw_contents = raw_file.read()
+    raw_contents = CORE.config_path.read_text(encoding="utf-8")
 
     yaml = yaml_util.load_yaml(CORE.config_path)
     if CONF_ESPHOME not in yaml or CONF_NAME not in yaml[CONF_ESPHOME]:
@@ -763,7 +866,7 @@ def command_rename(args: ArgsProtocol, config: ConfigType) -> int | None:
     if match is None:
         new_raw = re.sub(
             rf"name:\s+[\"']?{old_name}[\"']?",
-            f'name: "{args.name}"',
+            f'name: "{new_name}"',
             raw_contents,
         )
     else:
@@ -783,29 +886,28 @@ def command_rename(args: ArgsProtocol, config: ConfigType) -> int | None:
 
         new_raw = re.sub(
             rf"^(\s+{match.group(1)}):\s+[\"']?{old_name}[\"']?",
-            f'\\1: "{args.name}"',
+            f'\\1: "{new_name}"',
             raw_contents,
             flags=re.MULTILINE,
         )
 
-    new_path = os.path.join(CORE.config_dir, args.name + ".yaml")
+    new_path: Path = CORE.config_dir / (new_name + ".yaml")
     print(
-        f"Updating {color(AnsiFore.CYAN, CORE.config_path)} to {color(AnsiFore.CYAN, new_path)}"
+        f"Updating {color(AnsiFore.CYAN, str(CORE.config_path))} to {color(AnsiFore.CYAN, str(new_path))}"
     )
     print()
 
-    with open(new_path, mode="w", encoding="utf-8") as new_file:
-        new_file.write(new_raw)
+    new_path.write_text(new_raw, encoding="utf-8")
 
-    rc = run_external_process("esphome", "config", new_path)
+    rc = run_external_process("esphome", "config", str(new_path))
     if rc != 0:
         print(color(AnsiFore.BOLD_RED, "Rename failed. Reverting changes."))
-        os.remove(new_path)
+        new_path.unlink()
         return 1
 
     cli_args = [
         "run",
-        new_path,
+        str(new_path),
         "--no-logs",
         "--device",
         CORE.address,
@@ -819,11 +921,11 @@ def command_rename(args: ArgsProtocol, config: ConfigType) -> int | None:
     except KeyboardInterrupt:
         rc = 1
     if rc != 0:
-        os.remove(new_path)
+        new_path.unlink()
         return 1
 
     if CORE.config_path != new_path:
-        os.remove(CORE.config_path)
+        CORE.config_path.unlink()
 
     print(color(AnsiFore.BOLD_GREEN, "SUCCESS"))
     print()
@@ -836,6 +938,7 @@ PRE_CONFIG_ACTIONS = {
     "dashboard": command_dashboard,
     "vscode": command_vscode,
     "update-all": command_update_all,
+    "clean-all": command_clean_all,
 }
 
 POST_CONFIG_ACTIONS = {
@@ -844,9 +947,9 @@ POST_CONFIG_ACTIONS = {
     "upload": command_upload,
     "logs": command_logs,
     "run": command_run,
+    "clean": command_clean,
     "clean-mqtt": command_clean_mqtt,
     "mqtt-fingerprint": command_mqtt_fingerprint,
-    "clean": command_clean,
     "idedata": command_idedata,
     "rename": command_rename,
     "discover": command_discover,
@@ -890,6 +993,18 @@ def parse_args(argv):
         help="Add a substitution",
         metavar=("key", "value"),
     )
+    options_parser.add_argument(
+        "--mdns-address-cache",
+        help="mDNS address cache mapping in format 'hostname=ip1,ip2'",
+        action="append",
+        default=[],
+    )
+    options_parser.add_argument(
+        "--dns-address-cache",
+        help="DNS address cache mapping in format 'hostname=ip1,ip2'",
+        action="append",
+        default=[],
+    )
 
     parser = argparse.ArgumentParser(
         description=f"ESPHome {const.__version__}", parents=[options_parser]
@@ -934,6 +1049,17 @@ def parse_args(argv):
         help="Only generate source code, do not compile.",
         action="store_true",
     )
+    parser_compile.add_argument(
+        "--analyze-memory",
+        help="Analyze and display memory usage by component after compilation.",
+        action="store_true",
+    )
+    parser_compile.add_argument(
+        "--memory-report",
+        help="Save memory analysis report to a file (supports .json or .txt).",
+        type=str,
+        metavar="FILE",
+    )
 
     parser_upload = subparsers.add_parser(
         "upload",
@@ -1047,6 +1173,13 @@ def parse_args(argv):
         "configuration", help="Your YAML configuration file(s).", nargs="+"
     )
 
+    parser_clean_all = subparsers.add_parser(
+        "clean-all", help="Clean all build and platform files."
+    )
+    parser_clean_all.add_argument(
+        "configuration", help="Your YAML configuration directory.", nargs="*"
+    )
+
     parser_dashboard = subparsers.add_parser(
         "dashboard", help="Create a simple web server for a dashboard."
     )
@@ -1093,7 +1226,7 @@ def parse_args(argv):
 
     parser_update = subparsers.add_parser("update-all")
     parser_update.add_argument(
-        "configuration", help="Your YAML configuration file directories.", nargs="+"
+        "configuration", help="Your YAML configuration file or directory.", nargs="+"
     )
 
     parser_idedata = subparsers.add_parser("idedata")
@@ -1137,9 +1270,15 @@ def parse_args(argv):
 
 
 def run_esphome(argv):
+    from esphome.address_cache import AddressCache
+
     args = parse_args(argv)
     CORE.dashboard = args.dashboard
 
+    # Create address cache from command-line arguments
+    CORE.address_cache = AddressCache.from_cli_args(
+        args.mdns_address_cache, args.dns_address_cache
+    )
     # Override log level if verbose is set
     if args.verbose:
         args.log_level = "DEBUG"
@@ -1162,14 +1301,20 @@ def run_esphome(argv):
     _LOGGER.info("ESPHome %s", const.__version__)
 
     for conf_path in args.configuration:
-        if any(os.path.basename(conf_path) == x for x in SECRETS_FILES):
+        conf_path = Path(conf_path)
+        if any(conf_path.name == x for x in SECRETS_FILES):
             _LOGGER.warning("Skipping secrets file %s", conf_path)
             continue
 
         CORE.config_path = conf_path
         CORE.dashboard = args.dashboard
 
-        config = read_config(dict(args.substitution) if args.substitution else {})
+        # For logs command, skip updating external components
+        skip_external = args.command == "logs"
+        config = read_config(
+            dict(args.substitution) if args.substitution else {},
+            skip_external_update=skip_external,
+        )
         if config is None:
             return 2
         CORE.config = config

esphome/address_cache.py

@@ -0,0 +1,142 @@
+"""Address cache for DNS and mDNS lookups."""
+
+from __future__ import annotations
+
+import logging
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from collections.abc import Iterable
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def normalize_hostname(hostname: str) -> str:
+    """Normalize hostname for cache lookups.
+
+    Removes trailing dots and converts to lowercase.
+    """
+    return hostname.rstrip(".").lower()
+
+
+class AddressCache:
+    """Cache for DNS and mDNS address lookups.
+
+    This cache stores pre-resolved addresses from command-line arguments
+    to avoid slow DNS/mDNS lookups during builds.
+    """
+
+    def __init__(
+        self,
+        mdns_cache: dict[str, list[str]] | None = None,
+        dns_cache: dict[str, list[str]] | None = None,
+    ) -> None:
+        """Initialize the address cache.
+
+        Args:
+            mdns_cache: Pre-populated mDNS addresses (hostname -> IPs)
+            dns_cache: Pre-populated DNS addresses (hostname -> IPs)
+        """
+        self.mdns_cache = mdns_cache or {}
+        self.dns_cache = dns_cache or {}
+
+    def _get_cached_addresses(
+        self, hostname: str, cache: dict[str, list[str]], cache_type: str
+    ) -> list[str] | None:
+        """Get cached addresses from a specific cache.
+
+        Args:
+            hostname: The hostname to look up
+            cache: The cache dictionary to check
+            cache_type: Type of cache for logging ("mDNS" or "DNS")
+
+        Returns:
+            List of IP addresses if found in cache, None otherwise
+        """
+        normalized = normalize_hostname(hostname)
+        if addresses := cache.get(normalized):
+            _LOGGER.debug("Using %s cache for %s: %s", cache_type, hostname, addresses)
+            return addresses
+        return None
+
+    def get_mdns_addresses(self, hostname: str) -> list[str] | None:
+        """Get cached mDNS addresses for a hostname.
+
+        Args:
+            hostname: The hostname to look up (should end with .local)
+
+        Returns:
+            List of IP addresses if found in cache, None otherwise
+        """
+        return self._get_cached_addresses(hostname, self.mdns_cache, "mDNS")
+
+    def get_dns_addresses(self, hostname: str) -> list[str] | None:
+        """Get cached DNS addresses for a hostname.
+
+        Args:
+            hostname: The hostname to look up
+
+        Returns:
+            List of IP addresses if found in cache, None otherwise
+        """
+        return self._get_cached_addresses(hostname, self.dns_cache, "DNS")
+
+    def get_addresses(self, hostname: str) -> list[str] | None:
+        """Get cached addresses for a hostname.
+
+        Checks mDNS cache for .local domains, DNS cache otherwise.
+
+        Args:
+            hostname: The hostname to look up
+
+        Returns:
+            List of IP addresses if found in cache, None otherwise
+        """
+        normalized = normalize_hostname(hostname)
+        if normalized.endswith(".local"):
+            return self.get_mdns_addresses(hostname)
+        return self.get_dns_addresses(hostname)
+
+    def has_cache(self) -> bool:
+        """Check if any cache entries exist."""
+        return bool(self.mdns_cache or self.dns_cache)
+
+    @classmethod
+    def from_cli_args(
+        cls, mdns_args: Iterable[str], dns_args: Iterable[str]
+    ) -> AddressCache:
+        """Create cache from command-line arguments.
+
+        Args:
+            mdns_args: List of mDNS cache entries like ['host=ip1,ip2']
+            dns_args: List of DNS cache entries like ['host=ip1,ip2']
+
+        Returns:
+            Configured AddressCache instance
+        """
+        mdns_cache = cls._parse_cache_args(mdns_args)
+        dns_cache = cls._parse_cache_args(dns_args)
+        return cls(mdns_cache=mdns_cache, dns_cache=dns_cache)
+
+    @staticmethod
+    def _parse_cache_args(cache_args: Iterable[str]) -> dict[str, list[str]]:
+        """Parse cache arguments into a dictionary.
+
+        Args:
+            cache_args: List of cache mappings like ['host1=ip1,ip2', 'host2=ip3']
+
+        Returns:
+            Dictionary mapping normalized hostnames to list of IP addresses
+        """
+        cache: dict[str, list[str]] = {}
+        for arg in cache_args:
+            if "=" not in arg:
+                _LOGGER.warning(
+                    "Invalid cache format: %s (expected 'hostname=ip1,ip2')", arg
+                )
+                continue
+            hostname, ips = arg.split("=", 1)
+            # Normalize hostname for consistent lookups
+            normalized = normalize_hostname(hostname)
+            cache[normalized] = [ip.strip() for ip in ips.split(",")]
+        return cache

esphome/automation.py

@@ -15,7 +15,10 @@ from esphome.const import (
     CONF_TYPE_ID,
     CONF_UPDATE_INTERVAL,
 )
+from esphome.core import ID
+from esphome.cpp_generator import MockObj, MockObjClass, TemplateArgsType
 from esphome.schema_extractors import SCHEMA_EXTRACT, schema_extractor
+from esphome.types import ConfigType
 from esphome.util import Registry
 
 
@@ -49,11 +52,11 @@ def maybe_conf(conf, *validators):
     return validate
 
 
-def register_action(name, action_type, schema):
+def register_action(name: str, action_type: MockObjClass, schema: cv.Schema):
     return ACTION_REGISTRY.register(name, action_type, schema)
 
 
-def register_condition(name, condition_type, schema):
+def register_condition(name: str, condition_type: MockObjClass, schema: cv.Schema):
     return CONDITION_REGISTRY.register(name, condition_type, schema)
 
 
@@ -164,43 +167,78 @@ XorCondition = cg.esphome_ns.class_("XorCondition", Condition)
 
 
 @register_condition("and", AndCondition, validate_condition_list)
-async def and_condition_to_code(config, condition_id, template_arg, args):
+async def and_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     conditions = await build_condition_list(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, conditions)
 
 
 @register_condition("or", OrCondition, validate_condition_list)
-async def or_condition_to_code(config, condition_id, template_arg, args):
+async def or_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     conditions = await build_condition_list(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, conditions)
 
 
 @register_condition("all", AndCondition, validate_condition_list)
-async def all_condition_to_code(config, condition_id, template_arg, args):
+async def all_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     conditions = await build_condition_list(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, conditions)
 
 
 @register_condition("any", OrCondition, validate_condition_list)
-async def any_condition_to_code(config, condition_id, template_arg, args):
+async def any_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     conditions = await build_condition_list(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, conditions)
 
 
 @register_condition("not", NotCondition, validate_potentially_and_condition)
-async def not_condition_to_code(config, condition_id, template_arg, args):
+async def not_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     condition = await build_condition(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, condition)
 
 
 @register_condition("xor", XorCondition, validate_condition_list)
-async def xor_condition_to_code(config, condition_id, template_arg, args):
+async def xor_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     conditions = await build_condition_list(config, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, conditions)
 
 
 @register_condition("lambda", LambdaCondition, cv.returning_lambda)
-async def lambda_condition_to_code(config, condition_id, template_arg, args):
+async def lambda_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     lambda_ = await cg.process_lambda(config, args, return_type=bool)
     return cg.new_Pvariable(condition_id, template_arg, lambda_)
 
@@ -217,7 +255,12 @@ async def lambda_condition_to_code(config, condition_id, template_arg, args):
         }
     ).extend(cv.COMPONENT_SCHEMA),
 )
-async def for_condition_to_code(config, condition_id, template_arg, args):
+async def for_condition_to_code(
+    config: ConfigType,
+    condition_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     condition = await build_condition(
         config[CONF_CONDITION], cg.TemplateArguments(), []
     )
@@ -231,7 +274,12 @@ async def for_condition_to_code(config, condition_id, template_arg, args):
 @register_action(
     "delay", DelayAction, cv.templatable(cv.positive_time_period_milliseconds)
 )
-async def delay_action_to_code(config, action_id, template_arg, args):
+async def delay_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_component(var, {})
     template_ = await cg.templatable(config, args, cg.uint32)
@@ -256,10 +304,15 @@ async def delay_action_to_code(config, action_id, template_arg, args):
         cv.has_at_least_one_key(CONF_CONDITION, CONF_ANY, CONF_ALL),
     ),
 )
-async def if_action_to_code(config, action_id, template_arg, args):
+async def if_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     cond_conf = next(el for el in config if el in (CONF_ANY, CONF_ALL, CONF_CONDITION))
-    conditions = await build_condition(config[cond_conf], template_arg, args)
-    var = cg.new_Pvariable(action_id, template_arg, conditions)
+    condition = await build_condition(config[cond_conf], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, condition)
     if CONF_THEN in config:
         actions = await build_action_list(config[CONF_THEN], template_arg, args)
         cg.add(var.add_then(actions))
@@ -279,9 +332,14 @@ async def if_action_to_code(config, action_id, template_arg, args):
         }
     ),
 )
-async def while_action_to_code(config, action_id, template_arg, args):
-    conditions = await build_condition(config[CONF_CONDITION], template_arg, args)
-    var = cg.new_Pvariable(action_id, template_arg, conditions)
+async def while_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
+    condition = await build_condition(config[CONF_CONDITION], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, condition)
     actions = await build_action_list(config[CONF_THEN], template_arg, args)
     cg.add(var.add_then(actions))
     return var
@@ -297,7 +355,12 @@ async def while_action_to_code(config, action_id, template_arg, args):
         }
     ),
 )
-async def repeat_action_to_code(config, action_id, template_arg, args):
+async def repeat_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     var = cg.new_Pvariable(action_id, template_arg)
     count_template = await cg.templatable(config[CONF_COUNT], args, cg.uint32)
     cg.add(var.set_count(count_template))
@@ -320,9 +383,14 @@ _validate_wait_until = cv.maybe_simple_value(
 
 
 @register_action("wait_until", WaitUntilAction, _validate_wait_until)
-async def wait_until_action_to_code(config, action_id, template_arg, args):
-    conditions = await build_condition(config[CONF_CONDITION], template_arg, args)
-    var = cg.new_Pvariable(action_id, template_arg, conditions)
+async def wait_until_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
+    condition = await build_condition(config[CONF_CONDITION], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, condition)
     if CONF_TIMEOUT in config:
         template_ = await cg.templatable(config[CONF_TIMEOUT], args, cg.uint32)
         cg.add(var.set_timeout_value(template_))
@@ -331,7 +399,12 @@ async def wait_until_action_to_code(config, action_id, template_arg, args):
 
 
 @register_action("lambda", LambdaAction, cv.lambda_)
-async def lambda_action_to_code(config, action_id, template_arg, args):
+async def lambda_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     lambda_ = await cg.process_lambda(config, args, return_type=cg.void)
     return cg.new_Pvariable(action_id, template_arg, lambda_)
 
@@ -345,7 +418,12 @@ async def lambda_action_to_code(config, action_id, template_arg, args):
         }
     ),
 )
-async def component_update_action_to_code(config, action_id, template_arg, args):
+async def component_update_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     comp = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, comp)
 
@@ -359,7 +437,12 @@ async def component_update_action_to_code(config, action_id, template_arg, args)
         }
     ),
 )
-async def component_suspend_action_to_code(config, action_id, template_arg, args):
+async def component_suspend_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     comp = await cg.get_variable(config[CONF_ID])
     return cg.new_Pvariable(action_id, template_arg, comp)
 
@@ -376,7 +459,12 @@ async def component_suspend_action_to_code(config, action_id, template_arg, args
         }
     ),
 )
-async def component_resume_action_to_code(config, action_id, template_arg, args):
+async def component_resume_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     comp = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, comp)
     if CONF_UPDATE_INTERVAL in config:
@@ -385,7 +473,9 @@ async def component_resume_action_to_code(config, action_id, template_arg, args)
     return var
 
 
-async def build_action(full_config, template_arg, args):
+async def build_action(
+    full_config: ConfigType, template_arg: cg.TemplateArguments, args: TemplateArgsType
+) -> MockObj:
     registry_entry, config = cg.extract_registry_entry_config(
         ACTION_REGISTRY, full_config
     )
@@ -394,15 +484,19 @@ async def build_action(full_config, template_arg, args):
     return await builder(config, action_id, template_arg, args)
 
 
-async def build_action_list(config, templ, arg_type):
-    actions = []
+async def build_action_list(
+    config: list[ConfigType], templ: cg.TemplateArguments, arg_type: TemplateArgsType
+) -> list[MockObj]:
+    actions: list[MockObj] = []
     for conf in config:
         action = await build_action(conf, templ, arg_type)
         actions.append(action)
     return actions
 
 
-async def build_condition(full_config, template_arg, args):
+async def build_condition(
+    full_config: ConfigType, template_arg: cg.TemplateArguments, args: TemplateArgsType
+) -> MockObj:
     registry_entry, config = cg.extract_registry_entry_config(
         CONDITION_REGISTRY, full_config
     )
@@ -411,15 +505,19 @@ async def build_condition(full_config, template_arg, args):
     return await builder(config, action_id, template_arg, args)
 
 
-async def build_condition_list(config, templ, args):
-    conditions = []
+async def build_condition_list(
+    config: ConfigType, templ: cg.TemplateArguments, args: TemplateArgsType
+) -> list[MockObj]:
+    conditions: list[MockObj] = []
     for conf in config:
         condition = await build_condition(conf, templ, args)
         conditions.append(condition)
     return conditions
 
 
-async def build_automation(trigger, args, config):
+async def build_automation(
+    trigger: MockObj, args: TemplateArgsType, config: ConfigType
+) -> MockObj:
     arg_types = [arg[0] for arg in args]
     templ = cg.TemplateArguments(*arg_types)
     obj = cg.new_Pvariable(config[CONF_AUTOMATION_ID], templ, trigger)

esphome/build_gen/platformio.py

@@ -1,5 +1,3 @@
-import os
-
 from esphome.const import __version__
 from esphome.core import CORE
 from esphome.helpers import mkdir_p, read_file, write_file_if_changed
@@ -63,7 +61,7 @@ def write_ini(content):
     update_storage_json()
     path = CORE.relative_build_path("platformio.ini")
 
-    if os.path.isfile(path):
+    if path.is_file():
         text = read_file(path)
         content_format = find_begin_end(
             text, INI_AUTO_GENERATE_BEGIN, INI_AUTO_GENERATE_END

esphome/codegen.py

@@ -12,6 +12,7 @@ from esphome.cpp_generator import (  # noqa: F401
     ArrayInitializer,
     Expression,
     LineComment,
+    LogStringLiteral,
     MockObj,
     MockObjClass,
     Pvariable,

esphome/components/absolute_humidity/absolute_humidity.cpp

@@ -61,11 +61,10 @@ void AbsoluteHumidityComponent::loop() {
       ESP_LOGW(TAG, "No valid state from temperature sensor!");
     }
     if (no_humidity) {
-      ESP_LOGW(TAG, "No valid state from temperature sensor!");
+      ESP_LOGW(TAG, "No valid state from humidity sensor!");
     }
-    ESP_LOGW(TAG, "Unable to calculate absolute humidity.");
     this->publish_state(NAN);
-    this->status_set_warning();
+    this->status_set_warning(LOG_STR("Unable to calculate absolute humidity."));
     return;
   }
 
@@ -87,9 +86,8 @@ void AbsoluteHumidityComponent::loop() {
       es = es_wobus(temperature_c);
       break;
     default:
-      ESP_LOGE(TAG, "Invalid saturation vapor pressure equation selection!");
       this->publish_state(NAN);
-      this->status_set_error();
+      this->status_set_error("Invalid saturation vapor pressure equation selection!");
       return;
   }
   ESP_LOGD(TAG, "Saturation vapor pressure %f kPa", es);

esphome/components/adc/__init__.py

@@ -11,15 +11,8 @@ from esphome.components.esp32.const import (
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
 )
-from esphome.config_helpers import filter_source_files_from_platform
 import esphome.config_validation as cv
-from esphome.const import (
-    CONF_ANALOG,
-    CONF_INPUT,
-    CONF_NUMBER,
-    PLATFORM_ESP8266,
-    PlatformFramework,
-)
+from esphome.const import CONF_ANALOG, CONF_INPUT, CONF_NUMBER, PLATFORM_ESP8266
 from esphome.core import CORE
 
 CODEOWNERS = ["@esphome/core"]
@@ -273,21 +266,3 @@ def validate_adc_pin(value):
         )(value)
 
     raise NotImplementedError
-
-
-FILTER_SOURCE_FILES = filter_source_files_from_platform(
-    {
-        "adc_sensor_esp32.cpp": {
-            PlatformFramework.ESP32_ARDUINO,
-            PlatformFramework.ESP32_IDF,
-        },
-        "adc_sensor_esp8266.cpp": {PlatformFramework.ESP8266_ARDUINO},
-        "adc_sensor_rp2040.cpp": {PlatformFramework.RP2040_ARDUINO},
-        "adc_sensor_libretiny.cpp": {
-            PlatformFramework.BK72XX_ARDUINO,
-            PlatformFramework.RTL87XX_ARDUINO,
-            PlatformFramework.LN882X_ARDUINO,
-        },
-        "adc_sensor_zephyr.cpp": {PlatformFramework.NRF52_ZEPHYR},
-    }
-)

esphome/components/adc/adc_sensor_esp32.cpp

@@ -241,6 +241,8 @@ float ADCSensor::sample_autorange_() {
     cali_config.bitwidth = ADC_BITWIDTH_DEFAULT;
 
     err = adc_cali_create_scheme_curve_fitting(&cali_config, &handle);
+    ESP_LOGVV(TAG, "Autorange atten=%d: Calibration handle creation %s (err=%d)", atten,
+              (err == ESP_OK) ? "SUCCESS" : "FAILED", err);
 #else
     adc_cali_line_fitting_config_t cali_config = {
       .unit_id = this->adc_unit_,
@@ -251,10 +253,14 @@ float ADCSensor::sample_autorange_() {
 #endif
     };
     err = adc_cali_create_scheme_line_fitting(&cali_config, &handle);
+    ESP_LOGVV(TAG, "Autorange atten=%d: Calibration handle creation %s (err=%d)", atten,
+              (err == ESP_OK) ? "SUCCESS" : "FAILED", err);
 #endif
 
     int raw;
     err = adc_oneshot_read(this->adc_handle_, this->channel_, &raw);
+    ESP_LOGVV(TAG, "Autorange atten=%d: Raw ADC read %s, value=%d (err=%d)", atten,
+              (err == ESP_OK) ? "SUCCESS" : "FAILED", raw, err);
 
     if (err != ESP_OK) {
       ESP_LOGW(TAG, "ADC read failed in autorange with error %d", err);
@@ -275,8 +281,10 @@ float ADCSensor::sample_autorange_() {
       err = adc_cali_raw_to_voltage(handle, raw, &voltage_mv);
       if (err == ESP_OK) {
         voltage = voltage_mv / 1000.0f;
+        ESP_LOGVV(TAG, "Autorange atten=%d: CALIBRATED - raw=%d -> %dmV -> %.6fV", atten, raw, voltage_mv, voltage);
       } else {
         voltage = raw * 3.3f / 4095.0f;
+        ESP_LOGVV(TAG, "Autorange atten=%d: UNCALIBRATED FALLBACK - raw=%d -> %.6fV (3.3V ref)", atten, raw, voltage);
       }
       // Clean up calibration handle
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
@@ -287,6 +295,7 @@ float ADCSensor::sample_autorange_() {
 #endif
     } else {
       voltage = raw * 3.3f / 4095.0f;
+      ESP_LOGVV(TAG, "Autorange atten=%d: NO CALIBRATION - raw=%d -> %.6fV (3.3V ref)", atten, raw, voltage);
     }
 
     return {raw, voltage};
@@ -324,18 +333,32 @@ float ADCSensor::sample_autorange_() {
   }
 
   const int adc_half = 2048;
-  uint32_t c12 = std::min(raw12, adc_half);
-  uint32_t c6 = adc_half - std::abs(raw6 - adc_half);
-  uint32_t c2 = adc_half - std::abs(raw2 - adc_half);
-  uint32_t c0 = std::min(4095 - raw0, adc_half);
-  uint32_t csum = c12 + c6 + c2 + c0;
+  const uint32_t c12 = std::min(raw12, adc_half);
+
+  const int32_t c6_signed = adc_half - std::abs(raw6 - adc_half);
+  const uint32_t c6 = (c6_signed > 0) ? c6_signed : 0;  // Clamp to prevent underflow
+
+  const int32_t c2_signed = adc_half - std::abs(raw2 - adc_half);
+  const uint32_t c2 = (c2_signed > 0) ? c2_signed : 0;  // Clamp to prevent underflow
+
+  const uint32_t c0 = std::min(4095 - raw0, adc_half);
+  const uint32_t csum = c12 + c6 + c2 + c0;
+
+  ESP_LOGVV(TAG, "Autorange summary:");
+  ESP_LOGVV(TAG, "  Raw readings: 12db=%d, 6db=%d, 2.5db=%d, 0db=%d", raw12, raw6, raw2, raw0);
+  ESP_LOGVV(TAG, "  Voltages: 12db=%.6f, 6db=%.6f, 2.5db=%.6f, 0db=%.6f", mv12, mv6, mv2, mv0);
+  ESP_LOGVV(TAG, "  Coefficients: c12=%u, c6=%u, c2=%u, c0=%u, sum=%u", c12, c6, c2, c0, csum);
 
   if (csum == 0) {
     ESP_LOGE(TAG, "Invalid weight sum in autorange calculation");
     return NAN;
   }
 
-  return (mv12 * c12 + mv6 * c6 + mv2 * c2 + mv0 * c0) / csum;
+  const float final_result = (mv12 * c12 + mv6 * c6 + mv2 * c2 + mv0 * c0) / csum;
+  ESP_LOGV(TAG, "Autorange final: (%.6f*%u + %.6f*%u + %.6f*%u + %.6f*%u)/%u = %.6fV", mv12, c12, mv6, c6, mv2, c2, mv0,
+           c0, csum, final_result);
+
+  return final_result;
 }
 
 }  // namespace adc

esphome/components/adc/sensor.py

@@ -9,6 +9,7 @@ from esphome.components.zephyr import (
     zephyr_add_prj_conf,
     zephyr_add_user,
 )
+from esphome.config_helpers import filter_source_files_from_platform
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ATTENUATION,
@@ -20,6 +21,7 @@ from esphome.const import (
     PLATFORM_NRF52,
     STATE_CLASS_MEASUREMENT,
     UNIT_VOLT,
+    PlatformFramework,
 )
 from esphome.core import CORE
 
@@ -174,3 +176,21 @@ async def to_code(config):
 }};
 """
         )
+
+
+FILTER_SOURCE_FILES = filter_source_files_from_platform(
+    {
+        "adc_sensor_esp32.cpp": {
+            PlatformFramework.ESP32_ARDUINO,
+            PlatformFramework.ESP32_IDF,
+        },
+        "adc_sensor_esp8266.cpp": {PlatformFramework.ESP8266_ARDUINO},
+        "adc_sensor_rp2040.cpp": {PlatformFramework.RP2040_ARDUINO},
+        "adc_sensor_libretiny.cpp": {
+            PlatformFramework.BK72XX_ARDUINO,
+            PlatformFramework.RTL87XX_ARDUINO,
+            PlatformFramework.LN882X_ARDUINO,
+        },
+        "adc_sensor_zephyr.cpp": {PlatformFramework.NRF52_ZEPHYR},
+    }
+)

esphome/components/ade7880/ade7880.cpp

@@ -113,7 +113,7 @@ void ADE7880::update() {
   if (this->channel_a_ != nullptr) {
     auto *chan = this->channel_a_;
     this->update_sensor_from_s24zp_register16_(chan->current, AIRMS, [](float val) { return val / 100000.0f; });
-    this->update_sensor_from_s24zp_register16_(chan->voltage, BVRMS, [](float val) { return val / 10000.0f; });
+    this->update_sensor_from_s24zp_register16_(chan->voltage, AVRMS, [](float val) { return val / 10000.0f; });
     this->update_sensor_from_s24zp_register16_(chan->active_power, AWATT, [](float val) { return val / 100.0f; });
     this->update_sensor_from_s24zp_register16_(chan->apparent_power, AVA, [](float val) { return val / 100.0f; });
     this->update_sensor_from_s16_register16_(chan->power_factor, APF,

esphome/components/ags10/ags10.cpp

@@ -89,7 +89,7 @@ void AGS10Component::dump_config() {
 bool AGS10Component::new_i2c_address(uint8_t newaddress) {
   uint8_t rev_newaddress = ~newaddress;
   std::array<uint8_t, 5> data{newaddress, rev_newaddress, newaddress, rev_newaddress, 0};
-  data[4] = calc_crc8_(data, 4);
+  data[4] = crc8(data.data(), 4, 0xFF, 0x31, true);
   if (!this->write_bytes(REG_ADDRESS, data)) {
     this->error_code_ = COMMUNICATION_FAILED;
     this->status_set_warning();
@@ -109,7 +109,7 @@ bool AGS10Component::set_zero_point_with_current_resistance() { return this->set
 
 bool AGS10Component::set_zero_point_with(uint16_t value) {
   std::array<uint8_t, 5> data{0x00, 0x0C, (uint8_t) ((value >> 8) & 0xFF), (uint8_t) (value & 0xFF), 0};
-  data[4] = calc_crc8_(data, 4);
+  data[4] = crc8(data.data(), 4, 0xFF, 0x31, true);
   if (!this->write_bytes(REG_CALIBRATION, data)) {
     this->error_code_ = COMMUNICATION_FAILED;
     this->status_set_warning();
@@ -184,7 +184,7 @@ template<size_t N> optional<std::array<uint8_t, N>> AGS10Component::read_and_che
   auto res = *data;
   auto crc_byte = res[len];
 
-  if (crc_byte != calc_crc8_(res, len)) {
+  if (crc_byte != crc8(res.data(), len, 0xFF, 0x31, true)) {
     this->error_code_ = CRC_CHECK_FAILED;
     ESP_LOGE(TAG, "Reading AGS10 version failed: crc error!");
     return optional<std::array<uint8_t, N>>();
@@ -192,20 +192,5 @@ template<size_t N> optional<std::array<uint8_t, N>> AGS10Component::read_and_che
 
   return data;
 }
-
-template<size_t N> uint8_t AGS10Component::calc_crc8_(std::array<uint8_t, N> dat, uint8_t num) {
-  uint8_t i, byte1, crc = 0xFF;
-  for (byte1 = 0; byte1 < num; byte1++) {
-    crc ^= (dat[byte1]);
-    for (i = 0; i < 8; i++) {
-      if (crc & 0x80) {
-        crc = (crc << 1) ^ 0x31;
-      } else {
-        crc = (crc << 1);
-      }
-    }
-  }
-  return crc;
-}
 }  // namespace ags10
 }  // namespace esphome

esphome/components/ags10/ags10.h

@@ -1,9 +1,9 @@
 #pragma once
 
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/components/sensor/sensor.h"
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"
-#include "esphome/components/sensor/sensor.h"
-#include "esphome/components/i2c/i2c.h"
 
 namespace esphome {
 namespace ags10 {
@@ -99,16 +99,6 @@ class AGS10Component : public PollingComponent, public i2c::I2CDevice {
    * Read, checks and returns data from the sensor.
    */
   template<size_t N> optional<std::array<uint8_t, N>> read_and_check_(uint8_t a_register);
-
-  /**
-   * Calculates CRC8 value.
-   *
-   * CRC8 calculation, initial value: 0xFF, polynomial: 0x31 (x8+ x5+ x4+1)
-   *
-   * @param[in] dat the data buffer
-   * @param num number of bytes in the buffer
-   */
-  template<size_t N> uint8_t calc_crc8_(std::array<uint8_t, N> dat, uint8_t num);
 };
 
 template<typename... Ts> class AGS10NewI2cAddressAction : public Action<Ts...>, public Parented<AGS10Component> {

esphome/components/aht10/aht10.cpp

@@ -96,7 +96,7 @@ void AHT10Component::read_data_() {
     ESP_LOGD(TAG, "Read attempt %d at %ums", this->read_count_, (unsigned) (millis() - this->start_time_));
   }
   if (this->read(data, 6) != i2c::ERROR_OK) {
-    this->status_set_warning("Read failed, will retry");
+    this->status_set_warning(LOG_STR("Read failed, will retry"));
     this->restart_read_();
     return;
   }
@@ -113,7 +113,7 @@ void AHT10Component::read_data_() {
     } else {
       ESP_LOGD(TAG, "Invalid humidity, retrying");
       if (this->write(AHT10_MEASURE_CMD, sizeof(AHT10_MEASURE_CMD)) != i2c::ERROR_OK) {
-        this->status_set_warning(ESP_LOG_MSG_COMM_FAIL);
+        this->status_set_warning(LOG_STR(ESP_LOG_MSG_COMM_FAIL));
       }
       this->restart_read_();
       return;
@@ -144,7 +144,7 @@ void AHT10Component::update() {
     return;
   this->start_time_ = millis();
   if (this->write(AHT10_MEASURE_CMD, sizeof(AHT10_MEASURE_CMD)) != i2c::ERROR_OK) {
-    this->status_set_warning(ESP_LOG_MSG_COMM_FAIL);
+    this->status_set_warning(LOG_STR(ESP_LOG_MSG_COMM_FAIL));
     return;
   }
   this->restart_read_();

esphome/components/airthings_ble/__init__.py

@@ -18,6 +18,6 @@ CONFIG_SCHEMA = cv.Schema(
 ).extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA)
 
 
-def to_code(config):
+async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
-    yield esp32_ble_tracker.register_ble_device(var, config)
+    await esp32_ble_tracker.register_ble_device(var, config)

esphome/components/alarm_control_panel/__init__.py

@@ -13,7 +13,7 @@ from esphome.const import (
     CONF_TRIGGER_ID,
     CONF_WEB_SERVER,
 )
-from esphome.core import CORE, coroutine_with_priority
+from esphome.core import CORE, CoroPriority, coroutine_with_priority
 from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
 
@@ -345,6 +345,6 @@ async def alarm_control_panel_is_armed_to_code(
     return cg.new_Pvariable(condition_id, template_arg, paren)
 
 
-@coroutine_with_priority(100.0)
+@coroutine_with_priority(CoroPriority.CORE)
 async def to_code(config):
     cg.add_global(alarm_control_panel_ns.using)

esphome/components/am2315c/am2315c.cpp

@@ -29,22 +29,6 @@ namespace am2315c {
 
 static const char *const TAG = "am2315c";
 
-uint8_t AM2315C::crc8_(uint8_t *data, uint8_t len) {
-  uint8_t crc = 0xFF;
-  while (len--) {
-    crc ^= *data++;
-    for (uint8_t i = 0; i < 8; i++) {
-      if (crc & 0x80) {
-        crc <<= 1;
-        crc ^= 0x31;
-      } else {
-        crc <<= 1;
-      }
-    }
-  }
-  return crc;
-}
-
 bool AM2315C::reset_register_(uint8_t reg) {
   //  code based on demo code sent by www.aosong.com
   //  no further documentation.
@@ -86,7 +70,7 @@ bool AM2315C::convert_(uint8_t *data, float &humidity, float &temperature) {
   humidity = raw * 9.5367431640625e-5;
   raw = ((data[3] & 0x0F) << 16) | (data[4] << 8) | data[5];
   temperature = raw * 1.9073486328125e-4 - 50;
-  return this->crc8_(data, 6) == data[6];
+  return crc8(data, 6, 0xFF, 0x31, true) == data[6];
 }
 
 void AM2315C::setup() {

esphome/components/am2315c/am2315c.h

@@ -21,9 +21,9 @@
 // SOFTWARE.
 #pragma once
 
-#include "esphome/core/component.h"
-#include "esphome/components/sensor/sensor.h"
 #include "esphome/components/i2c/i2c.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/core/component.h"
 
 namespace esphome {
 namespace am2315c {
@@ -39,7 +39,6 @@ class AM2315C : public PollingComponent, public i2c::I2CDevice {
   void set_humidity_sensor(sensor::Sensor *humidity_sensor) { this->humidity_sensor_ = humidity_sensor; }
 
  protected:
-  uint8_t crc8_(uint8_t *data, uint8_t len);
   bool convert_(uint8_t *data, float &humidity, float &temperature);
   bool reset_register_(uint8_t reg);
 

esphome/components/api/__init__.py

@@ -1,4 +1,5 @@
 import base64
+import logging
 
 from esphome import automation
 from esphome.automation import Condition
@@ -24,7 +25,10 @@ from esphome.const import (
     CONF_TRIGGER_ID,
     CONF_VARIABLES,
 )
-from esphome.core import CORE, coroutine_with_priority
+from esphome.core import CORE, CoroPriority, coroutine_with_priority
+from esphome.types import ConfigType
+
+_LOGGER = logging.getLogger(__name__)
 
 DOMAIN = "api"
 DEPENDENCIES = ["network"]
@@ -55,6 +59,9 @@ CONF_BATCH_DELAY = "batch_delay"
 CONF_CUSTOM_SERVICES = "custom_services"
 CONF_HOMEASSISTANT_SERVICES = "homeassistant_services"
 CONF_HOMEASSISTANT_STATES = "homeassistant_states"
+CONF_LISTEN_BACKLOG = "listen_backlog"
+CONF_MAX_CONNECTIONS = "max_connections"
+CONF_MAX_SEND_QUEUE = "max_send_queue"
 
 
 def validate_encryption_key(value):
@@ -101,6 +108,32 @@ def _encryption_schema(config):
     return ENCRYPTION_SCHEMA(config)
 
 
+def _validate_api_config(config: ConfigType) -> ConfigType:
+    """Validate API configuration with mutual exclusivity check and deprecation warning."""
+    # Check if both password and encryption are configured
+    has_password = CONF_PASSWORD in config and config[CONF_PASSWORD]
+    has_encryption = CONF_ENCRYPTION in config
+
+    if has_password and has_encryption:
+        raise cv.Invalid(
+            "The 'password' and 'encryption' options are mutually exclusive. "
+            "The API client only supports one authentication method at a time. "
+            "Please remove one of them. "
+            "Note: 'password' authentication is deprecated and will be removed in version 2026.1.0. "
+            "We strongly recommend using 'encryption' instead for better security."
+        )
+
+    # Warn about password deprecation
+    if has_password:
+        _LOGGER.warning(
+            "API 'password' authentication has been deprecated since May 2022 and will be removed in version 2026.1.0. "
+            "Please migrate to the 'encryption' configuration. "
+            "See https://esphome.io/components/api.html#configuration-variables"
+        )
+
+    return config
+
+
 CONFIG_SCHEMA = cv.All(
     cv.Schema(
         {
@@ -128,13 +161,50 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_ON_CLIENT_DISCONNECTED): automation.validate_automation(
                 single=True
             ),
+            # Connection limits to prevent memory exhaustion on resource-constrained devices
+            # Each connection uses ~500-1000 bytes of RAM plus system resources
+            # Platform defaults based on available RAM and network stack implementation:
+            cv.SplitDefault(
+                CONF_LISTEN_BACKLOG,
+                esp8266=1,  # Limited RAM (~40KB free), LWIP raw sockets
+                esp32=4,  # More RAM (520KB), BSD sockets
+                rp2040=1,  # Limited RAM (264KB), LWIP raw sockets like ESP8266
+                bk72xx=4,  # Moderate RAM, BSD-style sockets
+                rtl87xx=4,  # Moderate RAM, BSD-style sockets
+                host=4,  # Abundant resources
+                ln882x=4,  # Moderate RAM
+            ): cv.int_range(min=1, max=10),
+            cv.SplitDefault(
+                CONF_MAX_CONNECTIONS,
+                esp8266=4,  # ~40KB free RAM, each connection uses ~500-1000 bytes
+                esp32=8,  # 520KB RAM available
+                rp2040=4,  # 264KB RAM but LWIP constraints
+                bk72xx=8,  # Moderate RAM
+                rtl87xx=8,  # Moderate RAM
+                host=8,  # Abundant resources
+                ln882x=8,  # Moderate RAM
+            ): cv.int_range(min=1, max=20),
+            # Maximum queued send buffers per connection before dropping connection
+            # Each buffer uses ~8-12 bytes overhead plus actual message size
+            # Platform defaults based on available RAM and typical message rates:
+            cv.SplitDefault(
+                CONF_MAX_SEND_QUEUE,
+                esp8266=5,  # Limited RAM, need to fail fast
+                esp32=8,  # More RAM, can buffer more
+                rp2040=5,  # Limited RAM
+                bk72xx=8,  # Moderate RAM
+                rtl87xx=8,  # Moderate RAM
+                host=16,  # Abundant resources
+                ln882x=8,  # Moderate RAM
+            ): cv.int_range(min=1, max=64),
         }
     ).extend(cv.COMPONENT_SCHEMA),
     cv.rename_key(CONF_SERVICES, CONF_ACTIONS),
+    _validate_api_config,
 )
 
 
-@coroutine_with_priority(40.0)
+@coroutine_with_priority(CoroPriority.WEB)
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
@@ -145,6 +215,11 @@ async def to_code(config):
         cg.add(var.set_password(config[CONF_PASSWORD]))
     cg.add(var.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
     cg.add(var.set_batch_delay(config[CONF_BATCH_DELAY]))
+    if CONF_LISTEN_BACKLOG in config:
+        cg.add(var.set_listen_backlog(config[CONF_LISTEN_BACKLOG]))
+    if CONF_MAX_CONNECTIONS in config:
+        cg.add(var.set_max_connections(config[CONF_MAX_CONNECTIONS]))
+    cg.add_define("API_MAX_SEND_QUEUE", config[CONF_MAX_SEND_QUEUE])
 
     # Set USE_API_SERVICES if any services are enabled
     if config.get(CONF_ACTIONS) or config[CONF_CUSTOM_SERVICES]:
@@ -193,6 +268,7 @@ async def to_code(config):
         if key := encryption_config.get(CONF_KEY):
             decoded = base64.b64decode(key)
             cg.add(var.set_noise_psk(list(decoded)))
+            cg.add_define("USE_API_NOISE_PSK_FROM_YAML")
         else:
             # No key provided, but encryption desired
             # This will allow a plaintext client to provide a noise key,
@@ -321,6 +397,7 @@ HOMEASSISTANT_TAG_SCANNED_ACTION_SCHEMA = cv.maybe_simple_value(
     HOMEASSISTANT_TAG_SCANNED_ACTION_SCHEMA,
 )
 async def homeassistant_tag_scanned_to_code(config, action_id, template_arg, args):
+    cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
     serv = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, serv, True)
     cg.add(var.set_service("esphome.tag_scanned"))

esphome/components/api/api.proto

@@ -7,7 +7,7 @@ service APIConnection {
     option (needs_setup_connection) = false;
     option (needs_authentication) = false;
   }
-  rpc connect (ConnectRequest) returns (ConnectResponse) {
+  rpc authenticate (AuthenticationRequest) returns (AuthenticationResponse) {
     option (needs_setup_connection) = false;
     option (needs_authentication) = false;
   }
@@ -27,9 +27,6 @@ service APIConnection {
   rpc subscribe_logs (SubscribeLogsRequest) returns (void) {}
   rpc subscribe_homeassistant_services (SubscribeHomeassistantServicesRequest) returns (void) {}
   rpc subscribe_home_assistant_states (SubscribeHomeAssistantStatesRequest) returns (void) {}
-  rpc get_time (GetTimeRequest) returns (GetTimeResponse) {
-    option (needs_authentication) = false;
-  }
   rpc execute_service (ExecuteServiceRequest) returns (void) {}
   rpc noise_encryption_set_key (NoiseEncryptionSetKeyRequest) returns (NoiseEncryptionSetKeyResponse) {}
 
@@ -69,6 +66,9 @@ service APIConnection {
   rpc voice_assistant_set_configuration(VoiceAssistantSetConfiguration) returns (void) {}
 
   rpc alarm_control_panel_command (AlarmControlPanelCommandRequest) returns (void) {}
+
+  rpc zwave_proxy_frame(ZWaveProxyFrame) returns (void) {}
+  rpc zwave_proxy_request(ZWaveProxyRequest) returns (void) {}
 }
 
 
@@ -102,7 +102,7 @@ message HelloRequest {
   // For example "Home Assistant"
   // Not strictly necessary to send but nice for debugging
   // purposes.
-  string client_info = 1;
+  string client_info = 1 [(pointer_to_buffer) = true];
   uint32 api_version_major = 2;
   uint32 api_version_minor = 3;
 }
@@ -132,21 +132,23 @@ message HelloResponse {
 
 // Message sent at the beginning of each connection to authenticate the client
 // Can only be sent by the client and only at the beginning of the connection
-message ConnectRequest {
+message AuthenticationRequest {
   option (id) = 3;
   option (source) = SOURCE_CLIENT;
   option (no_delay) = true;
+  option (ifdef) = "USE_API_PASSWORD";
 
   // The password to log in with
-  string password = 1;
+  string password = 1 [(pointer_to_buffer) = true];
 }
 
 // Confirmation of successful connection. After this the connection is available for all traffic.
 // Can only be sent by the server and only at the beginning of the connection
-message ConnectResponse {
+message AuthenticationResponse {
   option (id) = 4;
   option (source) = SOURCE_SERVER;
   option (no_delay) = true;
+  option (ifdef) = "USE_API_PASSWORD";
 
   bool invalid_password = 1;
 }
@@ -255,6 +257,10 @@ message DeviceInfoResponse {
 
   // Top-level area info to phase out suggested_area
   AreaInfo area = 22 [(field_ifdef) = "USE_AREAS"];
+
+  // Indicates if Z-Wave proxy support is available and features supported
+  uint32 zwave_proxy_feature_flags = 23 [(field_ifdef) = "USE_ZWAVE_PROXY"];
+  uint32 zwave_home_id = 24 [(field_ifdef) = "USE_ZWAVE_PROXY"];
 }
 
 message ListEntitiesRequest {
@@ -763,7 +769,7 @@ message HomeassistantServiceMap {
   string value = 2 [(no_zero_copy) = true];
 }
 
-message HomeassistantServiceResponse {
+message HomeassistantActionRequest {
   option (id) = 35;
   option (source) = SOURCE_SERVER;
   option (no_delay) = true;
@@ -809,15 +815,16 @@ message HomeAssistantStateResponse {
 // ==================== IMPORT TIME ====================
 message GetTimeRequest {
   option (id) = 36;
-  option (source) = SOURCE_BOTH;
+  option (source) = SOURCE_SERVER;
 }
 
 message GetTimeResponse {
   option (id) = 37;
-  option (source) = SOURCE_BOTH;
+  option (source) = SOURCE_CLIENT;
   option (no_delay) = true;
 
   fixed32 epoch_seconds = 1;
+  string timezone = 2 [(pointer_to_buffer) = true];
 }
 
 // ==================== USER-DEFINES SERVICES ====================
@@ -1458,7 +1465,7 @@ message BluetoothDeviceRequest {
 
   uint64 address = 1;
   BluetoothDeviceRequestType request_type = 2;
-  bool has_address_type = 3;
+  bool has_address_type = 3;  // Deprecated, should be removed in 2027.8 - https://github.com/esphome/esphome/pull/10318
   uint32 address_type = 4;
 }
 
@@ -1564,7 +1571,7 @@ message BluetoothGATTWriteRequest {
   uint32 handle = 2;
   bool response = 3;
 
-  bytes data = 4;
+  bytes data = 4 [(pointer_to_buffer) = true];
 }
 
 message BluetoothGATTReadDescriptorRequest {
@@ -1584,7 +1591,7 @@ message BluetoothGATTWriteDescriptorRequest {
   uint64 address = 1;
   uint32 handle = 2;
 
-  bytes data = 3;
+  bytes data = 3 [(pointer_to_buffer) = true];
 }
 
 message BluetoothGATTNotifyRequest {
@@ -1712,6 +1719,7 @@ message BluetoothScannerStateResponse {
 
   BluetoothScannerState state = 1;
   BluetoothScannerMode mode = 2;
+  BluetoothScannerMode configured_mode = 3;
 }
 
 message BluetoothScannerSetModeRequest {
@@ -1857,10 +1865,22 @@ message VoiceAssistantWakeWord {
   repeated string trained_languages = 3;
 }
 
+message VoiceAssistantExternalWakeWord {
+  string id = 1;
+  string wake_word = 2;
+  repeated string trained_languages = 3;
+  string model_type = 4;
+  uint32 model_size = 5;
+  string model_hash = 6;
+  string url = 7;
+}
+
 message VoiceAssistantConfigurationRequest {
   option (id) = 121;
   option (source) = SOURCE_CLIENT;
   option (ifdef) = "USE_VOICE_ASSISTANT";
+
+  repeated VoiceAssistantExternalWakeWord external_wake_words = 1;
 }
 
 message VoiceAssistantConfigurationResponse {
@@ -2275,3 +2295,28 @@ message UpdateCommandRequest {
   UpdateCommand command = 2;
   uint32 device_id = 3 [(field_ifdef) = "USE_DEVICES"];
 }
+
+// ==================== Z-WAVE ====================
+
+message ZWaveProxyFrame {
+  option (id) = 128;
+  option (source) = SOURCE_BOTH;
+  option (ifdef) = "USE_ZWAVE_PROXY";
+  option (no_delay) = true;
+
+  bytes data = 1 [(pointer_to_buffer) = true];
+}
+
+enum ZWaveProxyRequestType {
+  ZWAVE_PROXY_REQUEST_TYPE_SUBSCRIBE = 0;
+  ZWAVE_PROXY_REQUEST_TYPE_UNSUBSCRIBE = 1;
+  ZWAVE_PROXY_REQUEST_TYPE_HOME_ID_CHANGE = 2;
+}
+message ZWaveProxyRequest {
+  option (id) = 129;
+  option (source) = SOURCE_BOTH;
+  option (ifdef) = "USE_ZWAVE_PROXY";
+
+  ZWaveProxyRequestType type = 1;
+  bytes data = 2 [(pointer_to_buffer) = true];
+}

esphome/components/api/api_connection.cpp

@@ -30,6 +30,9 @@
 #ifdef USE_VOICE_ASSISTANT
 #include "esphome/components/voice_assistant/voice_assistant.h"
 #endif
+#ifdef USE_ZWAVE_PROXY
+#include "esphome/components/zwave_proxy/zwave_proxy.h"
+#endif
 
 namespace esphome::api {
 
@@ -42,6 +45,8 @@ static constexpr uint8_t MAX_PING_RETRIES = 60;
 static constexpr uint16_t PING_RETRY_INTERVAL = 1000;
 static constexpr uint32_t KEEPALIVE_DISCONNECT_TIMEOUT = (KEEPALIVE_TIMEOUT_MS * 5) / 2;
 
+static constexpr auto ESPHOME_VERSION_REF = StringRef::from_lit(ESPHOME_VERSION);
+
 static const char *const TAG = "api.connection";
 #ifdef USE_CAMERA
 static const int CAMERA_STOP_STREAM = 5000;
@@ -112,7 +117,7 @@ void APIConnection::start() {
   APIError err = this->helper_->init();
   if (err != APIError::OK) {
     on_fatal_error();
-    this->log_warning_("Helper init failed", err);
+    this->log_warning_(LOG_STR("Helper init failed"), err);
     return;
   }
   this->client_info_.peername = helper_->getpeername();
@@ -159,7 +164,7 @@ void APIConnection::loop() {
         break;
       } else if (err != APIError::OK) {
         on_fatal_error();
-        this->log_warning_("Reading failed", err);
+        this->log_warning_(LOG_STR("Reading failed"), err);
         return;
       } else {
         this->last_traffic_ = now;
@@ -200,7 +205,8 @@ void APIConnection::loop() {
     // Disconnect if not responded within 2.5*keepalive
     if (now - this->last_traffic_ > KEEPALIVE_DISCONNECT_TIMEOUT) {
       on_fatal_error();
-      ESP_LOGW(TAG, "%s is unresponsive; disconnecting", this->get_client_combined_info().c_str());
+      ESP_LOGW(TAG, "%s (%s) is unresponsive; disconnecting", this->client_info_.name.c_str(),
+               this->client_info_.peername.c_str());
     }
   } else if (now - this->last_traffic_ > KEEPALIVE_TIMEOUT_MS && !this->flags_.remove) {
     // Only send ping if we're not disconnecting
@@ -250,7 +256,7 @@ bool APIConnection::send_disconnect_response(const DisconnectRequest &msg) {
   // remote initiated disconnect_client
   // don't close yet, we still need to send the disconnect response
   // close will happen on next loop
-  ESP_LOGD(TAG, "%s disconnected", this->get_client_combined_info().c_str());
+  ESP_LOGD(TAG, "%s (%s) disconnected", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
   this->flags_.next_close = true;
   DisconnectResponse resp;
   return this->send_message(resp, DisconnectResponse::MESSAGE_TYPE);
@@ -465,9 +471,7 @@ uint16_t APIConnection::try_send_light_state(EntityBase *entity, APIConnection *
   resp.cold_white = values.get_cold_white();
   resp.warm_white = values.get_warm_white();
   if (light->supports_effects()) {
-    // get_effect_name() returns temporary std::string - must store it
-    std::string effect_name = light->get_effect_name();
-    resp.set_effect(StringRef(effect_name));
+    resp.set_effect(light->get_effect_name_ref());
   }
   return fill_and_encode_entity_state(light, resp, LightStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
@@ -1072,17 +1076,23 @@ void APIConnection::camera_image(const CameraImageRequest &msg) {
 
 #ifdef USE_HOMEASSISTANT_TIME
 void APIConnection::on_get_time_response(const GetTimeResponse &value) {
-  if (homeassistant::global_homeassistant_time != nullptr)
+  if (homeassistant::global_homeassistant_time != nullptr) {
     homeassistant::global_homeassistant_time->set_epoch_time(value.epoch_seconds);
+#ifdef USE_TIME_TIMEZONE
+    if (value.timezone_len > 0) {
+      const std::string &current_tz = homeassistant::global_homeassistant_time->get_timezone();
+      // Compare without allocating a string
+      if (current_tz.length() != value.timezone_len ||
+          memcmp(current_tz.c_str(), value.timezone, value.timezone_len) != 0) {
+        homeassistant::global_homeassistant_time->set_timezone(
+            std::string(reinterpret_cast<const char *>(value.timezone), value.timezone_len));
+      }
+    }
+#endif
+  }
 }
 #endif
 
-bool APIConnection::send_get_time_response(const GetTimeRequest &msg) {
-  GetTimeResponse resp;
-  resp.epoch_seconds = ::time(nullptr);
-  return this->send_message(resp, GetTimeResponse::MESSAGE_TYPE);
-}
-
 #ifdef USE_BLUETOOTH_PROXY
 void APIConnection::subscribe_bluetooth_le_advertisements(const SubscribeBluetoothLEAdvertisementsRequest &msg) {
   bluetooth_proxy::global_bluetooth_proxy->subscribe_api_connection(this, msg.flags);
@@ -1193,6 +1203,23 @@ bool APIConnection::send_voice_assistant_get_configuration_response(const VoiceA
       resp_wake_word.trained_languages.push_back(lang);
     }
   }
+
+  // Filter external wake words
+  for (auto &wake_word : msg.external_wake_words) {
+    if (wake_word.model_type != "micro") {
+      // microWakeWord only
+      continue;
+    }
+
+    resp.available_wake_words.emplace_back();
+    auto &resp_wake_word = resp.available_wake_words.back();
+    resp_wake_word.set_id(StringRef(wake_word.id));
+    resp_wake_word.set_wake_word(StringRef(wake_word.wake_word));
+    for (const auto &lang : wake_word.trained_languages) {
+      resp_wake_word.trained_languages.push_back(lang);
+    }
+  }
+
   resp.active_wake_words = &config.active_wake_words;
   resp.max_active_wake_words = config.max_active_wake_words;
   return this->send_message(resp, VoiceAssistantConfigurationResponse::MESSAGE_TYPE);
@@ -1203,7 +1230,16 @@ void APIConnection::voice_assistant_set_configuration(const VoiceAssistantSetCon
     voice_assistant::global_voice_assistant->on_set_configuration(msg.active_wake_words);
   }
 }
+#endif
 
+#ifdef USE_ZWAVE_PROXY
+void APIConnection::zwave_proxy_frame(const ZWaveProxyFrame &msg) {
+  zwave_proxy::global_zwave_proxy->send_frame(msg.data, msg.data_len);
+}
+
+void APIConnection::zwave_proxy_request(const ZWaveProxyRequest &msg) {
+  zwave_proxy::global_zwave_proxy->zwave_proxy_request(this, msg.type);
+}
 #endif
 
 #ifdef USE_ALARM_CONTROL_PANEL
@@ -1350,7 +1386,7 @@ void APIConnection::complete_authentication_() {
   }
 
   this->flags_.connection_state = static_cast<uint8_t>(ConnectionState::AUTHENTICATED);
-  ESP_LOGD(TAG, "%s connected", this->get_client_combined_info().c_str());
+  ESP_LOGD(TAG, "%s (%s) connected", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
 #ifdef USE_API_CLIENT_CONNECTED_TRIGGER
   this->parent_->get_client_connected_trigger()->trigger(this->client_info_.name, this->client_info_.peername);
 #endif
@@ -1362,7 +1398,7 @@ void APIConnection::complete_authentication_() {
 }
 
 bool APIConnection::send_hello_response(const HelloRequest &msg) {
-  this->client_info_.name = msg.client_info;
+  this->client_info_.name.assign(reinterpret_cast<const char *>(msg.client_info), msg.client_info_len);
   this->client_info_.peername = this->helper_->getpeername();
   this->client_api_version_major_ = msg.api_version_major;
   this->client_api_version_minor_ = msg.api_version_minor;
@@ -1372,9 +1408,8 @@ bool APIConnection::send_hello_response(const HelloRequest &msg) {
   HelloResponse resp;
   resp.api_version_major = 1;
   resp.api_version_minor = 12;
-  // Temporary string for concatenation - will be valid during send_message call
-  std::string server_info = App.get_name() + " (esphome v" ESPHOME_VERSION ")";
-  resp.set_server_info(StringRef(server_info));
+  // Send only the version string - the client only logs this for debugging and doesn't use it otherwise
+  resp.set_server_info(ESPHOME_VERSION_REF);
   resp.set_name(StringRef(App.get_name()));
 
 #ifdef USE_API_PASSWORD
@@ -1387,20 +1422,17 @@ bool APIConnection::send_hello_response(const HelloRequest &msg) {
 
   return this->send_message(resp, HelloResponse::MESSAGE_TYPE);
 }
-bool APIConnection::send_connect_response(const ConnectRequest &msg) {
-  bool correct = true;
 #ifdef USE_API_PASSWORD
-  correct = this->parent_->check_password(msg.password);
-#endif
-
-  ConnectResponse resp;
+bool APIConnection::send_authenticate_response(const AuthenticationRequest &msg) {
+  AuthenticationResponse resp;
   // bool invalid_password = 1;
-  resp.invalid_password = !correct;
-  if (correct) {
+  resp.invalid_password = !this->parent_->check_password(msg.password, msg.password_len);
+  if (!resp.invalid_password) {
     this->complete_authentication_();
   }
-  return this->send_message(resp, ConnectResponse::MESSAGE_TYPE);
+  return this->send_message(resp, AuthenticationResponse::MESSAGE_TYPE);
 }
+#endif  // USE_API_PASSWORD
 
 bool APIConnection::send_ping_response(const PingRequest &msg) {
   PingResponse resp;
@@ -1421,13 +1453,9 @@ bool APIConnection::send_device_info_response(const DeviceInfoRequest &msg) {
   std::string mac_address = get_mac_address_pretty();
   resp.set_mac_address(StringRef(mac_address));
 
-  // Compile-time StringRef constants
-  static constexpr auto ESPHOME_VERSION_REF = StringRef::from_lit(ESPHOME_VERSION);
   resp.set_esphome_version(ESPHOME_VERSION_REF);
 
-  // get_compilation_time() returns temporary std::string - must store it
-  std::string compilation_time = App.get_compilation_time();
-  resp.set_compilation_time(StringRef(compilation_time));
+  resp.set_compilation_time(App.get_compilation_time_ref());
 
   // Compile-time StringRef constants for manufacturers
 #if defined(USE_ESP8266) || defined(USE_ESP32)
@@ -1468,6 +1496,10 @@ bool APIConnection::send_device_info_response(const DeviceInfoRequest &msg) {
 #ifdef USE_VOICE_ASSISTANT
   resp.voice_assistant_feature_flags = voice_assistant::global_voice_assistant->get_feature_flags();
 #endif
+#ifdef USE_ZWAVE_PROXY
+  resp.zwave_proxy_feature_flags = zwave_proxy::global_zwave_proxy->get_feature_flags();
+  resp.zwave_home_id = zwave_proxy::global_zwave_proxy->get_home_id();
+#endif
 #ifdef USE_API_NOISE
   resp.api_encryption_supported = true;
 #endif
@@ -1569,7 +1601,7 @@ bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) {
     return false;
   if (err != APIError::OK) {
     on_fatal_error();
-    this->log_warning_("Packet write failed", err);
+    this->log_warning_(LOG_STR("Packet write failed"), err);
     return false;
   }
   // Do not set last_traffic_ on send
@@ -1578,12 +1610,12 @@ bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) {
 #ifdef USE_API_PASSWORD
 void APIConnection::on_unauthenticated_access() {
   this->on_fatal_error();
-  ESP_LOGD(TAG, "%s access without authentication", this->get_client_combined_info().c_str());
+  ESP_LOGD(TAG, "%s (%s) no authentication", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
 }
 #endif
 void APIConnection::on_no_setup_connection() {
   this->on_fatal_error();
-  ESP_LOGD(TAG, "%s access without full connection", this->get_client_combined_info().c_str());
+  ESP_LOGD(TAG, "%s (%s) no connection setup", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
 }
 void APIConnection::on_fatal_error() {
   this->helper_->close();
@@ -1756,7 +1788,7 @@ void APIConnection::process_batch_() {
                                                        std::span<const PacketInfo>(packet_info, packet_count));
   if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
     on_fatal_error();
-    this->log_warning_("Batch write failed", err);
+    this->log_warning_(LOG_STR("Batch write failed"), err);
   }
 
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -1834,11 +1866,14 @@ void APIConnection::process_state_subscriptions_() {
 }
 #endif  // USE_API_HOMEASSISTANT_STATES
 
-void APIConnection::log_warning_(const char *message, APIError err) {
-  ESP_LOGW(TAG, "%s: %s %s errno=%d", this->get_client_combined_info().c_str(), message, api_error_to_str(err), errno);
+void APIConnection::log_warning_(const LogString *message, APIError err) {
+  ESP_LOGW(TAG, "%s (%s): %s %s errno=%d", this->client_info_.name.c_str(), this->client_info_.peername.c_str(),
+           LOG_STR_ARG(message), LOG_STR_ARG(api_error_to_logstr(err)), errno);
 }
 
-void APIConnection::log_socket_operation_failed_(APIError err) { this->log_warning_("Socket operation failed", err); }
+void APIConnection::log_socket_operation_failed_(APIError err) {
+  this->log_warning_(LOG_STR("Socket operation failed"), err);
+}
 
 }  // namespace esphome::api
 #endif

esphome/components/api/api_connection.h

@@ -10,8 +10,8 @@
 #include "esphome/core/component.h"
 #include "esphome/core/entity_base.h"
 
-#include <vector>
 #include <functional>
+#include <vector>
 
 namespace esphome::api {
 
@@ -19,14 +19,6 @@ namespace esphome::api {
 struct ClientInfo {
   std::string name;      // Client name from Hello message
   std::string peername;  // IP:port from socket
-
-  std::string get_combined_info() const {
-    if (name == peername) {
-      // Before Hello message, both are the same
-      return name;
-    }
-    return name + " (" + peername + ")";
-  }
 };
 
 // Keepalive timeout in milliseconds
@@ -44,7 +36,7 @@ static constexpr size_t MAX_PACKETS_PER_BATCH = 64;  // ESP32 has 8KB+ stack, HO
 static constexpr size_t MAX_PACKETS_PER_BATCH = 32;  // ESP8266/RP2040/etc have smaller stacks
 #endif
 
-class APIConnection : public APIServerConnection {
+class APIConnection final : public APIServerConnection {
  public:
   friend class APIServer;
   friend class ListEntitiesIterator;
@@ -132,10 +124,10 @@ class APIConnection : public APIServerConnection {
 #endif
   bool try_send_log_message(int level, const char *tag, const char *line, size_t message_len);
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-  void send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
+  void send_homeassistant_action(const HomeassistantActionRequest &call) {
     if (!this->flags_.service_call_subscription)
       return;
-    this->send_message(call, HomeassistantServiceResponse::MESSAGE_TYPE);
+    this->send_message(call, HomeassistantActionRequest::MESSAGE_TYPE);
   }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
@@ -171,6 +163,11 @@ class APIConnection : public APIServerConnection {
   void voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) override;
 #endif
 
+#ifdef USE_ZWAVE_PROXY
+  void zwave_proxy_frame(const ZWaveProxyFrame &msg) override;
+  void zwave_proxy_request(const ZWaveProxyRequest &msg) override;
+#endif
+
 #ifdef USE_ALARM_CONTROL_PANEL
   bool send_alarm_control_panel_state(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel);
   void alarm_control_panel_command(const AlarmControlPanelCommandRequest &msg) override;
@@ -197,7 +194,9 @@ class APIConnection : public APIServerConnection {
   void on_get_time_response(const GetTimeResponse &value) override;
 #endif
   bool send_hello_response(const HelloRequest &msg) override;
-  bool send_connect_response(const ConnectRequest &msg) override;
+#ifdef USE_API_PASSWORD
+  bool send_authenticate_response(const AuthenticationRequest &msg) override;
+#endif
   bool send_disconnect_response(const DisconnectRequest &msg) override;
   bool send_ping_response(const PingRequest &msg) override;
   bool send_device_info_response(const DeviceInfoRequest &msg) override;
@@ -219,7 +218,6 @@ class APIConnection : public APIServerConnection {
 #ifdef USE_API_HOMEASSISTANT_STATES
   void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) override;
 #endif
-  bool send_get_time_response(const GetTimeRequest &msg) override;
 #ifdef USE_API_SERVICES
   void execute_service(const ExecuteServiceRequest &msg) override;
 #endif
@@ -272,7 +270,8 @@ class APIConnection : public APIServerConnection {
   bool try_to_clear_buffer(bool log_out_of_space);
   bool send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) override;
 
-  std::string get_client_combined_info() const { return this->client_info_.get_combined_info(); }
+  const std::string &get_name() const { return this->client_info_.name; }
+  const std::string &get_peername() const { return this->client_info_.peername; }
 
  protected:
   // Helper function to handle authentication completion
@@ -301,9 +300,17 @@ class APIConnection : public APIServerConnection {
                                               APIConnection *conn, uint32_t remaining_size, bool is_single) {
     // Set common fields that are shared by all entity types
     msg.key = entity->get_object_id_hash();
-    // IMPORTANT: get_object_id() may return a temporary std::string
-    std::string object_id = entity->get_object_id();
-    msg.set_object_id(StringRef(object_id));
+    // Try to use static reference first to avoid allocation
+    StringRef static_ref = entity->get_object_id_ref_for_api_();
+    // Store dynamic string outside the if-else to maintain lifetime
+    std::string object_id;
+    if (!static_ref.empty()) {
+      msg.set_object_id(static_ref);
+    } else {
+      // Dynamic case - need to allocate
+      object_id = entity->get_object_id();
+      msg.set_object_id(StringRef(object_id));
+    }
 
     if (entity->has_own_name()) {
       msg.set_name(entity->get_name());
@@ -724,7 +731,7 @@ class APIConnection : public APIServerConnection {
   }
 
   // Helper function to log API errors with errno
-  void log_warning_(const char *message, APIError err);
+  void log_warning_(const LogString *message, APIError err);
   // Specific helper for duplicated error message
   void log_socket_operation_failed_(APIError err);
 };

esphome/components/api/api_frame_helper.cpp

@@ -13,7 +13,8 @@ namespace esphome::api {
 
 static const char *const TAG = "api.frame_helper";
 
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->client_info_->get_combined_info().c_str(), ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  ESP_LOGVV(TAG, "%s (%s): " msg, this->client_info_->name.c_str(), this->client_info_->peername.c_str(), ##__VA_ARGS__)
 
 #ifdef HELPER_LOG_PACKETS
 #define LOG_PACKET_RECEIVED(buffer) ESP_LOGVV(TAG, "Received frame: %s", format_hex_pretty(buffer).c_str())
@@ -23,64 +24,64 @@ static const char *const TAG = "api.frame_helper";
 #define LOG_PACKET_SENDING(data, len) ((void) 0)
 #endif
 
-const char *api_error_to_str(APIError err) {
+const LogString *api_error_to_logstr(APIError err) {
   // not using switch to ensure compiler doesn't try to build a big table out of it
   if (err == APIError::OK) {
-    return "OK";
+    return LOG_STR("OK");
   } else if (err == APIError::WOULD_BLOCK) {
-    return "WOULD_BLOCK";
+    return LOG_STR("WOULD_BLOCK");
   } else if (err == APIError::BAD_INDICATOR) {
-    return "BAD_INDICATOR";
+    return LOG_STR("BAD_INDICATOR");
   } else if (err == APIError::BAD_DATA_PACKET) {
-    return "BAD_DATA_PACKET";
+    return LOG_STR("BAD_DATA_PACKET");
   } else if (err == APIError::TCP_NODELAY_FAILED) {
-    return "TCP_NODELAY_FAILED";
+    return LOG_STR("TCP_NODELAY_FAILED");
   } else if (err == APIError::TCP_NONBLOCKING_FAILED) {
-    return "TCP_NONBLOCKING_FAILED";
+    return LOG_STR("TCP_NONBLOCKING_FAILED");
   } else if (err == APIError::CLOSE_FAILED) {
-    return "CLOSE_FAILED";
+    return LOG_STR("CLOSE_FAILED");
   } else if (err == APIError::SHUTDOWN_FAILED) {
-    return "SHUTDOWN_FAILED";
+    return LOG_STR("SHUTDOWN_FAILED");
   } else if (err == APIError::BAD_STATE) {
-    return "BAD_STATE";
+    return LOG_STR("BAD_STATE");
   } else if (err == APIError::BAD_ARG) {
-    return "BAD_ARG";
+    return LOG_STR("BAD_ARG");
   } else if (err == APIError::SOCKET_READ_FAILED) {
-    return "SOCKET_READ_FAILED";
+    return LOG_STR("SOCKET_READ_FAILED");
   } else if (err == APIError::SOCKET_WRITE_FAILED) {
-    return "SOCKET_WRITE_FAILED";
+    return LOG_STR("SOCKET_WRITE_FAILED");
   } else if (err == APIError::OUT_OF_MEMORY) {
-    return "OUT_OF_MEMORY";
+    return LOG_STR("OUT_OF_MEMORY");
   } else if (err == APIError::CONNECTION_CLOSED) {
-    return "CONNECTION_CLOSED";
+    return LOG_STR("CONNECTION_CLOSED");
   }
 #ifdef USE_API_NOISE
   else if (err == APIError::BAD_HANDSHAKE_PACKET_LEN) {
-    return "BAD_HANDSHAKE_PACKET_LEN";
+    return LOG_STR("BAD_HANDSHAKE_PACKET_LEN");
   } else if (err == APIError::HANDSHAKESTATE_READ_FAILED) {
-    return "HANDSHAKESTATE_READ_FAILED";
+    return LOG_STR("HANDSHAKESTATE_READ_FAILED");
   } else if (err == APIError::HANDSHAKESTATE_WRITE_FAILED) {
-    return "HANDSHAKESTATE_WRITE_FAILED";
+    return LOG_STR("HANDSHAKESTATE_WRITE_FAILED");
   } else if (err == APIError::HANDSHAKESTATE_BAD_STATE) {
-    return "HANDSHAKESTATE_BAD_STATE";
+    return LOG_STR("HANDSHAKESTATE_BAD_STATE");
   } else if (err == APIError::CIPHERSTATE_DECRYPT_FAILED) {
-    return "CIPHERSTATE_DECRYPT_FAILED";
+    return LOG_STR("CIPHERSTATE_DECRYPT_FAILED");
   } else if (err == APIError::CIPHERSTATE_ENCRYPT_FAILED) {
-    return "CIPHERSTATE_ENCRYPT_FAILED";
+    return LOG_STR("CIPHERSTATE_ENCRYPT_FAILED");
   } else if (err == APIError::HANDSHAKESTATE_SETUP_FAILED) {
-    return "HANDSHAKESTATE_SETUP_FAILED";
+    return LOG_STR("HANDSHAKESTATE_SETUP_FAILED");
   } else if (err == APIError::HANDSHAKESTATE_SPLIT_FAILED) {
-    return "HANDSHAKESTATE_SPLIT_FAILED";
+    return LOG_STR("HANDSHAKESTATE_SPLIT_FAILED");
   } else if (err == APIError::BAD_HANDSHAKE_ERROR_BYTE) {
-    return "BAD_HANDSHAKE_ERROR_BYTE";
+    return LOG_STR("BAD_HANDSHAKE_ERROR_BYTE");
   }
 #endif
-  return "UNKNOWN";
+  return LOG_STR("UNKNOWN");
 }
 
 // Default implementation for loop - handles sending buffered data
 APIError APIFrameHelper::loop() {
-  if (!this->tx_buf_.empty()) {
+  if (this->tx_buf_count_ > 0) {
     APIError err = try_send_tx_buf_();
     if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
       return err;
@@ -102,9 +103,20 @@ APIError APIFrameHelper::handle_socket_write_error_() {
 // Helper method to buffer data from IOVs
 void APIFrameHelper::buffer_data_from_iov_(const struct iovec *iov, int iovcnt, uint16_t total_write_len,
                                            uint16_t offset) {
-  SendBuffer buffer;
-  buffer.size = total_write_len - offset;
-  buffer.data = std::make_unique<uint8_t[]>(buffer.size);
+  // Check if queue is full
+  if (this->tx_buf_count_ >= API_MAX_SEND_QUEUE) {
+    HELPER_LOG("Send queue full (%u buffers), dropping connection", this->tx_buf_count_);
+    this->state_ = State::FAILED;
+    return;
+  }
+
+  uint16_t buffer_size = total_write_len - offset;
+  auto &buffer = this->tx_buf_[this->tx_buf_tail_];
+  buffer = std::make_unique<SendBuffer>(SendBuffer{
+      .data = std::make_unique<uint8_t[]>(buffer_size),
+      .size = buffer_size,
+      .offset = 0,
+  });
 
   uint16_t to_skip = offset;
   uint16_t write_pos = 0;
@@ -117,12 +129,15 @@ void APIFrameHelper::buffer_data_from_iov_(const struct iovec *iov, int iovcnt,
       // Include this segment (partially or fully)
       const uint8_t *src = reinterpret_cast<uint8_t *>(iov[i].iov_base) + to_skip;
       uint16_t len = static_cast<uint16_t>(iov[i].iov_len) - to_skip;
-      std::memcpy(buffer.data.get() + write_pos, src, len);
+      std::memcpy(buffer->data.get() + write_pos, src, len);
       write_pos += len;
       to_skip = 0;
     }
   }
-  this->tx_buf_.push_back(std::move(buffer));
+
+  // Update circular buffer tracking
+  this->tx_buf_tail_ = (this->tx_buf_tail_ + 1) % API_MAX_SEND_QUEUE;
+  this->tx_buf_count_++;
 }
 
 // This method writes data to socket or buffers it
@@ -140,7 +155,7 @@ APIError APIFrameHelper::write_raw_(const struct iovec *iov, int iovcnt, uint16_
 #endif
 
   // Try to send any existing buffered data first if there is any
-  if (!this->tx_buf_.empty()) {
+  if (this->tx_buf_count_ > 0) {
     APIError send_result = try_send_tx_buf_();
     // If real error occurred (not just WOULD_BLOCK), return it
     if (send_result != APIError::OK && send_result != APIError::WOULD_BLOCK) {
@@ -149,7 +164,7 @@ APIError APIFrameHelper::write_raw_(const struct iovec *iov, int iovcnt, uint16_
 
     // If there is still data in the buffer, we can't send, buffer
     // the new data and return
-    if (!this->tx_buf_.empty()) {
+    if (this->tx_buf_count_ > 0) {
       this->buffer_data_from_iov_(iov, iovcnt, total_write_len, 0);
       return APIError::OK;  // Success, data buffered
     }
@@ -177,32 +192,31 @@ APIError APIFrameHelper::write_raw_(const struct iovec *iov, int iovcnt, uint16_
 }
 
 // Common implementation for trying to send buffered data
-// IMPORTANT: Caller MUST ensure tx_buf_ is not empty before calling this method
+// IMPORTANT: Caller MUST ensure tx_buf_count_ > 0 before calling this method
 APIError APIFrameHelper::try_send_tx_buf_() {
   // Try to send from tx_buf - we assume it's not empty as it's the caller's responsibility to check
-  bool tx_buf_empty = false;
-  while (!tx_buf_empty) {
+  while (this->tx_buf_count_ > 0) {
     // Get the first buffer in the queue
-    SendBuffer &front_buffer = this->tx_buf_.front();
+    SendBuffer *front_buffer = this->tx_buf_[this->tx_buf_head_].get();
 
     // Try to send the remaining data in this buffer
-    ssize_t sent = this->socket_->write(front_buffer.current_data(), front_buffer.remaining());
+    ssize_t sent = this->socket_->write(front_buffer->current_data(), front_buffer->remaining());
 
     if (sent == -1) {
       return this->handle_socket_write_error_();
     } else if (sent == 0) {
       // Nothing sent but not an error
       return APIError::WOULD_BLOCK;
-    } else if (static_cast<uint16_t>(sent) < front_buffer.remaining()) {
+    } else if (static_cast<uint16_t>(sent) < front_buffer->remaining()) {
       // Partially sent, update offset
       // Cast to ensure no overflow issues with uint16_t
-      front_buffer.offset += static_cast<uint16_t>(sent);
+      front_buffer->offset += static_cast<uint16_t>(sent);
       return APIError::WOULD_BLOCK;  // Stop processing more buffers if we couldn't send a complete buffer
     } else {
       // Buffer completely sent, remove it from the queue
-      this->tx_buf_.pop_front();
-      // Update empty status for the loop condition
-      tx_buf_empty = this->tx_buf_.empty();
+      this->tx_buf_[this->tx_buf_head_].reset();
+      this->tx_buf_head_ = (this->tx_buf_head_ + 1) % API_MAX_SEND_QUEUE;
+      this->tx_buf_count_--;
       // Continue loop to try sending the next buffer
     }
   }

esphome/components/api/api_frame_helper.h

@@ -1,7 +1,8 @@
 #pragma once
+#include <array>
 #include <cstdint>
-#include <deque>
 #include <limits>
+#include <memory>
 #include <span>
 #include <utility>
 #include <vector>
@@ -17,6 +18,16 @@ namespace esphome::api {
 // uncomment to log raw packets
 //#define HELPER_LOG_PACKETS
 
+// Maximum message size limits to prevent OOM on constrained devices
+// Voice Assistant is our largest user at 1024 bytes per audio chunk
+// Using 2048 + 256 bytes overhead = 2304 bytes total to support voice and future needs
+// ESP8266 has very limited RAM and cannot support voice assistant
+#ifdef USE_ESP8266
+static constexpr uint16_t MAX_MESSAGE_SIZE = 512;  // Keep small for memory constrained ESP8266
+#else
+static constexpr uint16_t MAX_MESSAGE_SIZE = 2304;  // Support voice (1024) + headroom for larger messages
+#endif
+
 // Forward declaration
 struct ClientInfo;
 
@@ -66,7 +77,7 @@ enum class APIError : uint16_t {
 #endif
 };
 
-const char *api_error_to_str(APIError err);
+const LogString *api_error_to_logstr(APIError err);
 
 class APIFrameHelper {
  public:
@@ -79,7 +90,7 @@ class APIFrameHelper {
   virtual APIError init() = 0;
   virtual APIError loop();
   virtual APIError read_packet(ReadPacketBuffer *buffer) = 0;
-  bool can_write_without_blocking() { return state_ == State::DATA && tx_buf_.empty(); }
+  bool can_write_without_blocking() { return this->state_ == State::DATA && this->tx_buf_count_ == 0; }
   std::string getpeername() { return socket_->getpeername(); }
   int getpeername(struct sockaddr *addr, socklen_t *addrlen) { return socket_->getpeername(addr, addrlen); }
   APIError close() {
@@ -104,9 +115,9 @@ class APIFrameHelper {
   // The buffer contains all messages with appropriate padding before each
   virtual APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) = 0;
   // Get the frame header padding required by this protocol
-  virtual uint8_t frame_header_padding() = 0;
+  uint8_t frame_header_padding() const { return frame_header_padding_; }
   // Get the frame footer size required by this protocol
-  virtual uint8_t frame_footer_size() = 0;
+  uint8_t frame_footer_size() const { return frame_footer_size_; }
   // Check if socket has data ready to read
   bool is_socket_ready() const { return socket_ != nullptr && socket_->ready(); }
 
@@ -161,7 +172,7 @@ class APIFrameHelper {
   };
 
   // Containers (size varies, but typically 12+ bytes on 32-bit)
-  std::deque<SendBuffer> tx_buf_;
+  std::array<std::unique_ptr<SendBuffer>, API_MAX_SEND_QUEUE> tx_buf_;
   std::vector<struct iovec> reusable_iovs_;
   std::vector<uint8_t> rx_buf_;
 
@@ -174,7 +185,10 @@ class APIFrameHelper {
   State state_{State::INITIALIZE};
   uint8_t frame_header_padding_{0};
   uint8_t frame_footer_size_{0};
-  // 5 bytes total, 3 bytes padding
+  uint8_t tx_buf_head_{0};
+  uint8_t tx_buf_tail_{0};
+  uint8_t tx_buf_count_{0};
+  // 8 bytes total, 0 bytes padding
 
   // Common initialization for both plaintext and noise protocols
   APIError init_common_();

esphome/components/api/api_frame_helper_noise.cpp

@@ -10,13 +10,22 @@
 #include <cstring>
 #include <cinttypes>
 
+#ifdef USE_ESP8266
+#include <pgmspace.h>
+#endif
+
 namespace esphome::api {
 
 static const char *const TAG = "api.noise";
+#ifdef USE_ESP8266
+static const char PROLOGUE_INIT[] PROGMEM = "NoiseAPIInit";
+#else
 static const char *const PROLOGUE_INIT = "NoiseAPIInit";
+#endif
 static constexpr size_t PROLOGUE_INIT_LEN = 12;  // strlen("NoiseAPIInit")
 
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->client_info_->get_combined_info().c_str(), ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  ESP_LOGVV(TAG, "%s (%s): " msg, this->client_info_->name.c_str(), this->client_info_->peername.c_str(), ##__VA_ARGS__)
 
 #ifdef HELPER_LOG_PACKETS
 #define LOG_PACKET_RECEIVED(buffer) ESP_LOGVV(TAG, "Received frame: %s", format_hex_pretty(buffer).c_str())
@@ -27,42 +36,42 @@ static constexpr size_t PROLOGUE_INIT_LEN = 12;  // strlen("NoiseAPIInit")
 #endif
 
 /// Convert a noise error code to a readable error
-std::string noise_err_to_str(int err) {
+const LogString *noise_err_to_logstr(int err) {
   if (err == NOISE_ERROR_NO_MEMORY)
-    return "NO_MEMORY";
+    return LOG_STR("NO_MEMORY");
   if (err == NOISE_ERROR_UNKNOWN_ID)
-    return "UNKNOWN_ID";
+    return LOG_STR("UNKNOWN_ID");
   if (err == NOISE_ERROR_UNKNOWN_NAME)
-    return "UNKNOWN_NAME";
+    return LOG_STR("UNKNOWN_NAME");
   if (err == NOISE_ERROR_MAC_FAILURE)
-    return "MAC_FAILURE";
+    return LOG_STR("MAC_FAILURE");
   if (err == NOISE_ERROR_NOT_APPLICABLE)
-    return "NOT_APPLICABLE";
+    return LOG_STR("NOT_APPLICABLE");
   if (err == NOISE_ERROR_SYSTEM)
-    return "SYSTEM";
+    return LOG_STR("SYSTEM");
   if (err == NOISE_ERROR_REMOTE_KEY_REQUIRED)
-    return "REMOTE_KEY_REQUIRED";
+    return LOG_STR("REMOTE_KEY_REQUIRED");
   if (err == NOISE_ERROR_LOCAL_KEY_REQUIRED)
-    return "LOCAL_KEY_REQUIRED";
+    return LOG_STR("LOCAL_KEY_REQUIRED");
   if (err == NOISE_ERROR_PSK_REQUIRED)
-    return "PSK_REQUIRED";
+    return LOG_STR("PSK_REQUIRED");
   if (err == NOISE_ERROR_INVALID_LENGTH)
-    return "INVALID_LENGTH";
+    return LOG_STR("INVALID_LENGTH");
   if (err == NOISE_ERROR_INVALID_PARAM)
-    return "INVALID_PARAM";
+    return LOG_STR("INVALID_PARAM");
   if (err == NOISE_ERROR_INVALID_STATE)
-    return "INVALID_STATE";
+    return LOG_STR("INVALID_STATE");
   if (err == NOISE_ERROR_INVALID_NONCE)
-    return "INVALID_NONCE";
+    return LOG_STR("INVALID_NONCE");
   if (err == NOISE_ERROR_INVALID_PRIVATE_KEY)
-    return "INVALID_PRIVATE_KEY";
+    return LOG_STR("INVALID_PRIVATE_KEY");
   if (err == NOISE_ERROR_INVALID_PUBLIC_KEY)
-    return "INVALID_PUBLIC_KEY";
+    return LOG_STR("INVALID_PUBLIC_KEY");
   if (err == NOISE_ERROR_INVALID_FORMAT)
-    return "INVALID_FORMAT";
+    return LOG_STR("INVALID_FORMAT");
   if (err == NOISE_ERROR_INVALID_SIGNATURE)
-    return "INVALID_SIGNATURE";
-  return to_string(err);
+    return LOG_STR("INVALID_SIGNATURE");
+  return LOG_STR("UNKNOWN");
 }
 
 /// Initialize the frame helper, returns OK if successful.
@@ -75,7 +84,11 @@ APIError APINoiseFrameHelper::init() {
   // init prologue
   size_t old_size = prologue_.size();
   prologue_.resize(old_size + PROLOGUE_INIT_LEN);
+#ifdef USE_ESP8266
+  memcpy_P(prologue_.data() + old_size, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
+#else
   std::memcpy(prologue_.data() + old_size, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
+#endif
 
   state_ = State::CLIENT_HELLO;
   return APIError::OK;
@@ -83,18 +96,18 @@ APIError APINoiseFrameHelper::init() {
 // Helper for handling handshake frame errors
 APIError APINoiseFrameHelper::handle_handshake_frame_error_(APIError aerr) {
   if (aerr == APIError::BAD_INDICATOR) {
-    send_explicit_handshake_reject_("Bad indicator byte");
+    send_explicit_handshake_reject_(LOG_STR("Bad indicator byte"));
   } else if (aerr == APIError::BAD_HANDSHAKE_PACKET_LEN) {
-    send_explicit_handshake_reject_("Bad handshake packet len");
+    send_explicit_handshake_reject_(LOG_STR("Bad handshake packet len"));
   }
   return aerr;
 }
 
 // Helper for handling noise library errors
-APIError APINoiseFrameHelper::handle_noise_error_(int err, const char *func_name, APIError api_err) {
+APIError APINoiseFrameHelper::handle_noise_error_(int err, const LogString *func_name, APIError api_err) {
   if (err != 0) {
     state_ = State::FAILED;
-    HELPER_LOG("%s failed: %s", func_name, noise_err_to_str(err).c_str());
+    HELPER_LOG("%s failed: %s", LOG_STR_ARG(func_name), LOG_STR_ARG(noise_err_to_logstr(err)));
     return api_err;
   }
   return APIError::OK;
@@ -172,6 +185,13 @@ APIError APINoiseFrameHelper::try_read_frame_(std::vector<uint8_t> *frame) {
     return APIError::BAD_HANDSHAKE_PACKET_LEN;
   }
 
+  // Check against maximum message size to prevent OOM
+  if (msg_size > MAX_MESSAGE_SIZE) {
+    state_ = State::FAILED;
+    HELPER_LOG("Bad packet: message size %u exceeds maximum %u", msg_size, MAX_MESSAGE_SIZE);
+    return APIError::BAD_DATA_PACKET;
+  }
+
   // reserve space for body
   if (rx_buf_.size() != msg_size) {
     rx_buf_.resize(msg_size);
@@ -279,11 +299,11 @@ APIError APINoiseFrameHelper::state_action_() {
       }
 
       if (frame.empty()) {
-        send_explicit_handshake_reject_("Empty handshake message");
+        send_explicit_handshake_reject_(LOG_STR("Empty handshake message"));
         return APIError::BAD_HANDSHAKE_ERROR_BYTE;
       } else if (frame[0] != 0x00) {
         HELPER_LOG("Bad handshake error byte: %u", frame[0]);
-        send_explicit_handshake_reject_("Bad handshake error byte");
+        send_explicit_handshake_reject_(LOG_STR("Bad handshake error byte"));
         return APIError::BAD_HANDSHAKE_ERROR_BYTE;
       }
 
@@ -293,8 +313,10 @@ APIError APINoiseFrameHelper::state_action_() {
       err = noise_handshakestate_read_message(handshake_, &mbuf, nullptr);
       if (err != 0) {
         // Special handling for MAC failure
-        send_explicit_handshake_reject_(err == NOISE_ERROR_MAC_FAILURE ? "Handshake MAC failure" : "Handshake error");
-        return handle_noise_error_(err, "noise_handshakestate_read_message", APIError::HANDSHAKESTATE_READ_FAILED);
+        send_explicit_handshake_reject_(err == NOISE_ERROR_MAC_FAILURE ? LOG_STR("Handshake MAC failure")
+                                                                       : LOG_STR("Handshake error"));
+        return handle_noise_error_(err, LOG_STR("noise_handshakestate_read_message"),
+                                   APIError::HANDSHAKESTATE_READ_FAILED);
       }
 
       aerr = check_handshake_finished_();
@@ -307,8 +329,8 @@ APIError APINoiseFrameHelper::state_action_() {
       noise_buffer_set_output(mbuf, buffer + 1, sizeof(buffer) - 1);
 
       err = noise_handshakestate_write_message(handshake_, &mbuf, nullptr);
-      APIError aerr_write =
-          handle_noise_error_(err, "noise_handshakestate_write_message", APIError::HANDSHAKESTATE_WRITE_FAILED);
+      APIError aerr_write = handle_noise_error_(err, LOG_STR("noise_handshakestate_write_message"),
+                                                APIError::HANDSHAKESTATE_WRITE_FAILED);
       if (aerr_write != APIError::OK)
         return aerr_write;
       buffer[0] = 0x00;  // success
@@ -331,15 +353,31 @@ APIError APINoiseFrameHelper::state_action_() {
   }
   return APIError::OK;
 }
-void APINoiseFrameHelper::send_explicit_handshake_reject_(const std::string &reason) {
+void APINoiseFrameHelper::send_explicit_handshake_reject_(const LogString *reason) {
+#ifdef USE_STORE_LOG_STR_IN_FLASH
+  // On ESP8266 with flash strings, we need to use PROGMEM-aware functions
+  size_t reason_len = strlen_P(reinterpret_cast<PGM_P>(reason));
   std::vector<uint8_t> data;
-  data.resize(reason.length() + 1);
+  data.resize(reason_len + 1);
+  data[0] = 0x01;  // failure
+
+  // Copy error message from PROGMEM
+  if (reason_len > 0) {
+    memcpy_P(data.data() + 1, reinterpret_cast<PGM_P>(reason), reason_len);
+  }
+#else
+  // Normal memory access
+  const char *reason_str = LOG_STR_ARG(reason);
+  size_t reason_len = strlen(reason_str);
+  std::vector<uint8_t> data;
+  data.resize(reason_len + 1);
   data[0] = 0x01;  // failure
 
   // Copy error message in bulk
-  if (!reason.empty()) {
-    std::memcpy(data.data() + 1, reason.c_str(), reason.length());
+  if (reason_len > 0) {
+    std::memcpy(data.data() + 1, reason_str, reason_len);
   }
+#endif
 
   // temporarily remove failed state
   auto orig_state = state_;
@@ -368,7 +406,8 @@ APIError APINoiseFrameHelper::read_packet(ReadPacketBuffer *buffer) {
   noise_buffer_init(mbuf);
   noise_buffer_set_inout(mbuf, frame.data(), frame.size(), frame.size());
   err = noise_cipherstate_decrypt(recv_cipher_, &mbuf);
-  APIError decrypt_err = handle_noise_error_(err, "noise_cipherstate_decrypt", APIError::CIPHERSTATE_DECRYPT_FAILED);
+  APIError decrypt_err =
+      handle_noise_error_(err, LOG_STR("noise_cipherstate_decrypt"), APIError::CIPHERSTATE_DECRYPT_FAILED);
   if (decrypt_err != APIError::OK)
     return decrypt_err;
 
@@ -450,7 +489,8 @@ APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, st
                            4 + packet.payload_size + frame_footer_size_);
 
     int err = noise_cipherstate_encrypt(send_cipher_, &mbuf);
-    APIError aerr = handle_noise_error_(err, "noise_cipherstate_encrypt", APIError::CIPHERSTATE_ENCRYPT_FAILED);
+    APIError aerr =
+        handle_noise_error_(err, LOG_STR("noise_cipherstate_encrypt"), APIError::CIPHERSTATE_ENCRYPT_FAILED);
     if (aerr != APIError::OK)
       return aerr;
 
@@ -504,25 +544,27 @@ APIError APINoiseFrameHelper::init_handshake_() {
   nid_.modifier_ids[0] = NOISE_MODIFIER_PSK0;
 
   err = noise_handshakestate_new_by_id(&handshake_, &nid_, NOISE_ROLE_RESPONDER);
-  APIError aerr = handle_noise_error_(err, "noise_handshakestate_new_by_id", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  APIError aerr =
+      handle_noise_error_(err, LOG_STR("noise_handshakestate_new_by_id"), APIError::HANDSHAKESTATE_SETUP_FAILED);
   if (aerr != APIError::OK)
     return aerr;
 
   const auto &psk = ctx_->get_psk();
   err = noise_handshakestate_set_pre_shared_key(handshake_, psk.data(), psk.size());
-  aerr = handle_noise_error_(err, "noise_handshakestate_set_pre_shared_key", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  aerr = handle_noise_error_(err, LOG_STR("noise_handshakestate_set_pre_shared_key"),
+                             APIError::HANDSHAKESTATE_SETUP_FAILED);
   if (aerr != APIError::OK)
     return aerr;
 
   err = noise_handshakestate_set_prologue(handshake_, prologue_.data(), prologue_.size());
-  aerr = handle_noise_error_(err, "noise_handshakestate_set_prologue", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  aerr = handle_noise_error_(err, LOG_STR("noise_handshakestate_set_prologue"), APIError::HANDSHAKESTATE_SETUP_FAILED);
   if (aerr != APIError::OK)
     return aerr;
   // set_prologue copies it into handshakestate, so we can get rid of it now
   prologue_ = {};
 
   err = noise_handshakestate_start(handshake_);
-  aerr = handle_noise_error_(err, "noise_handshakestate_start", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  aerr = handle_noise_error_(err, LOG_STR("noise_handshakestate_start"), APIError::HANDSHAKESTATE_SETUP_FAILED);
   if (aerr != APIError::OK)
     return aerr;
   return APIError::OK;
@@ -540,7 +582,8 @@ APIError APINoiseFrameHelper::check_handshake_finished_() {
     return APIError::HANDSHAKESTATE_BAD_STATE;
   }
   int err = noise_handshakestate_split(handshake_, &send_cipher_, &recv_cipher_);
-  APIError aerr = handle_noise_error_(err, "noise_handshakestate_split", APIError::HANDSHAKESTATE_SPLIT_FAILED);
+  APIError aerr =
+      handle_noise_error_(err, LOG_STR("noise_handshakestate_split"), APIError::HANDSHAKESTATE_SPLIT_FAILED);
   if (aerr != APIError::OK)
     return aerr;
 

esphome/components/api/api_frame_helper_noise.h

@@ -7,7 +7,7 @@
 
 namespace esphome::api {
 
-class APINoiseFrameHelper : public APIFrameHelper {
+class APINoiseFrameHelper final : public APIFrameHelper {
  public:
   APINoiseFrameHelper(std::unique_ptr<socket::Socket> socket, std::shared_ptr<APINoiseContext> ctx,
                       const ClientInfo *client_info)
@@ -25,10 +25,6 @@ class APINoiseFrameHelper : public APIFrameHelper {
   APIError read_packet(ReadPacketBuffer *buffer) override;
   APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
   APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
-  // Get the frame header padding required by this protocol
-  uint8_t frame_header_padding() override { return frame_header_padding_; }
-  // Get the frame footer size required by this protocol
-  uint8_t frame_footer_size() override { return frame_footer_size_; }
 
  protected:
   APIError state_action_();
@@ -36,9 +32,9 @@ class APINoiseFrameHelper : public APIFrameHelper {
   APIError write_frame_(const uint8_t *data, uint16_t len);
   APIError init_handshake_();
   APIError check_handshake_finished_();
-  void send_explicit_handshake_reject_(const std::string &reason);
+  void send_explicit_handshake_reject_(const LogString *reason);
   APIError handle_handshake_frame_error_(APIError aerr);
-  APIError handle_noise_error_(int err, const char *func_name, APIError api_err);
+  APIError handle_noise_error_(int err, const LogString *func_name, APIError api_err);
 
   // Pointers first (4 bytes each)
   NoiseHandshakeState *handshake_{nullptr};

esphome/components/api/api_frame_helper_plaintext.cpp

@@ -10,11 +10,16 @@
 #include <cstring>
 #include <cinttypes>
 
+#ifdef USE_ESP8266
+#include <pgmspace.h>
+#endif
+
 namespace esphome::api {
 
 static const char *const TAG = "api.plaintext";
 
-#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->client_info_->get_combined_info().c_str(), ##__VA_ARGS__)
+#define HELPER_LOG(msg, ...) \
+  ESP_LOGVV(TAG, "%s (%s): " msg, this->client_info_->name.c_str(), this->client_info_->peername.c_str(), ##__VA_ARGS__)
 
 #ifdef HELPER_LOG_PACKETS
 #define LOG_PACKET_RECEIVED(buffer) ESP_LOGVV(TAG, "Received frame: %s", format_hex_pretty(buffer).c_str())
@@ -118,10 +123,10 @@ APIError APIPlaintextFrameHelper::try_read_frame_(std::vector<uint8_t> *frame) {
       continue;
     }
 
-    if (msg_size_varint->as_uint32() > std::numeric_limits<uint16_t>::max()) {
+    if (msg_size_varint->as_uint32() > MAX_MESSAGE_SIZE) {
       state_ = State::FAILED;
       HELPER_LOG("Bad packet: message size %" PRIu32 " exceeds maximum %u", msg_size_varint->as_uint32(),
-                 std::numeric_limits<uint16_t>::max());
+                 MAX_MESSAGE_SIZE);
       return APIError::BAD_DATA_PACKET;
     }
     rx_header_parsed_len_ = msg_size_varint->as_uint16();
@@ -197,11 +202,20 @@ APIError APIPlaintextFrameHelper::read_packet(ReadPacketBuffer *buffer) {
       // We must send at least 3 bytes to be read, so we add
       // a message after the indicator byte to ensures its long
       // enough and can aid in debugging.
-      const char msg[] = "\x00"
-                         "Bad indicator byte";
+      static constexpr uint8_t INDICATOR_MSG_SIZE = 19;
+#ifdef USE_ESP8266
+      static const char MSG_PROGMEM[] PROGMEM = "\x00"
+                                                "Bad indicator byte";
+      char msg[INDICATOR_MSG_SIZE];
+      memcpy_P(msg, MSG_PROGMEM, INDICATOR_MSG_SIZE);
       iov[0].iov_base = (void *) msg;
-      iov[0].iov_len = 19;
-      this->write_raw_(iov, 1, 19);
+#else
+      static const char MSG[] = "\x00"
+                                "Bad indicator byte";
+      iov[0].iov_base = (void *) MSG;
+#endif
+      iov[0].iov_len = INDICATOR_MSG_SIZE;
+      this->write_raw_(iov, 1, INDICATOR_MSG_SIZE);
     }
     return aerr;
   }

esphome/components/api/api_frame_helper_plaintext.h

@@ -5,7 +5,7 @@
 
 namespace esphome::api {
 
-class APIPlaintextFrameHelper : public APIFrameHelper {
+class APIPlaintextFrameHelper final : public APIFrameHelper {
  public:
   APIPlaintextFrameHelper(std::unique_ptr<socket::Socket> socket, const ClientInfo *client_info)
       : APIFrameHelper(std::move(socket), client_info) {
@@ -22,9 +22,6 @@ class APIPlaintextFrameHelper : public APIFrameHelper {
   APIError read_packet(ReadPacketBuffer *buffer) override;
   APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
   APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
-  uint8_t frame_header_padding() override { return frame_header_padding_; }
-  // Get the frame footer size required by this protocol
-  uint8_t frame_footer_size() override { return frame_footer_size_; }
 
  protected:
   APIError try_read_frame_(std::vector<uint8_t> *frame);

esphome/components/api/api_options.proto

@@ -32,6 +32,13 @@ extend google.protobuf.FieldOptions {
     optional string fixed_array_size_define = 50010;
     optional string fixed_array_with_length_define = 50011;
 
+    // pointer_to_buffer: Use pointer instead of array for fixed-size byte fields
+    // When set, the field will be declared as a pointer (const uint8_t *data)
+    // instead of an array (uint8_t data[N]). This allows zero-copy on decode
+    // by pointing directly to the protobuf buffer. The buffer must remain valid
+    // until the message is processed (which is guaranteed for stack-allocated messages).
+    optional bool pointer_to_buffer = 50012 [default=false];
+
     // container_pointer: Zero-copy optimization for repeated fields.
     //
     // When container_pointer is set on a repeated field, the generated message will

esphome/components/api/api_pb2.cpp

@@ -22,9 +22,12 @@ bool HelloRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
 }
 bool HelloRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
   switch (field_id) {
-    case 1:
-      this->client_info = value.as_string();
+    case 1: {
+      // Use raw data directly to avoid allocation
+      this->client_info = value.data();
+      this->client_info_len = value.size();
       break;
+    }
     default:
       return false;
   }
@@ -42,18 +45,23 @@ void HelloResponse::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->server_info_ref_.size());
   size.add_length(1, this->name_ref_.size());
 }
-bool ConnectRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+#ifdef USE_API_PASSWORD
+bool AuthenticationRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
   switch (field_id) {
-    case 1:
-      this->password = value.as_string();
+    case 1: {
+      // Use raw data directly to avoid allocation
+      this->password = value.data();
+      this->password_len = value.size();
       break;
+    }
     default:
       return false;
   }
   return true;
 }
-void ConnectResponse::encode(ProtoWriteBuffer buffer) const { buffer.encode_bool(1, this->invalid_password); }
-void ConnectResponse::calculate_size(ProtoSize &size) const { size.add_bool(1, this->invalid_password); }
+void AuthenticationResponse::encode(ProtoWriteBuffer buffer) const { buffer.encode_bool(1, this->invalid_password); }
+void AuthenticationResponse::calculate_size(ProtoSize &size) const { size.add_bool(1, this->invalid_password); }
+#endif
 #ifdef USE_AREAS
 void AreaInfo::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_uint32(1, this->area_id);
@@ -127,6 +135,12 @@ void DeviceInfoResponse::encode(ProtoWriteBuffer buffer) const {
 #ifdef USE_AREAS
   buffer.encode_message(22, this->area);
 #endif
+#ifdef USE_ZWAVE_PROXY
+  buffer.encode_uint32(23, this->zwave_proxy_feature_flags);
+#endif
+#ifdef USE_ZWAVE_PROXY
+  buffer.encode_uint32(24, this->zwave_home_id);
+#endif
 }
 void DeviceInfoResponse::calculate_size(ProtoSize &size) const {
 #ifdef USE_API_PASSWORD
@@ -179,6 +193,12 @@ void DeviceInfoResponse::calculate_size(ProtoSize &size) const {
 #ifdef USE_AREAS
   size.add_message_object(2, this->area);
 #endif
+#ifdef USE_ZWAVE_PROXY
+  size.add_uint32(2, this->zwave_proxy_feature_flags);
+#endif
+#ifdef USE_ZWAVE_PROXY
+  size.add_uint32(2, this->zwave_home_id);
+#endif
 }
 #ifdef USE_BINARY_SENSOR
 void ListEntitiesBinarySensorResponse::encode(ProtoWriteBuffer buffer) const {
@@ -852,7 +872,7 @@ void HomeassistantServiceMap::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->key_ref_.size());
   size.add_length(1, this->value.size());
 }
-void HomeassistantServiceResponse::encode(ProtoWriteBuffer buffer) const {
+void HomeassistantActionRequest::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_string(1, this->service_ref_);
   for (auto &it : this->data) {
     buffer.encode_message(2, it, true);
@@ -865,7 +885,7 @@ void HomeassistantServiceResponse::encode(ProtoWriteBuffer buffer) const {
   }
   buffer.encode_bool(5, this->is_event);
 }
-void HomeassistantServiceResponse::calculate_size(ProtoSize &size) const {
+void HomeassistantActionRequest::calculate_size(ProtoSize &size) const {
   size.add_length(1, this->service_ref_.size());
   size.add_repeated_message(1, this->data);
   size.add_repeated_message(1, this->data_template);
@@ -901,6 +921,19 @@ bool HomeAssistantStateResponse::decode_length(uint32_t field_id, ProtoLengthDel
   return true;
 }
 #endif
+bool GetTimeResponse::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+  switch (field_id) {
+    case 2: {
+      // Use raw data directly to avoid allocation
+      this->timezone = value.data();
+      this->timezone_len = value.size();
+      break;
+    }
+    default:
+      return false;
+  }
+  return true;
+}
 bool GetTimeResponse::decode_32bit(uint32_t field_id, Proto32Bit value) {
   switch (field_id) {
     case 1:
@@ -911,8 +944,6 @@ bool GetTimeResponse::decode_32bit(uint32_t field_id, Proto32Bit value) {
   }
   return true;
 }
-void GetTimeResponse::encode(ProtoWriteBuffer buffer) const { buffer.encode_fixed32(1, this->epoch_seconds); }
-void GetTimeResponse::calculate_size(ProtoSize &size) const { size.add_fixed32(1, this->epoch_seconds); }
 #ifdef USE_API_SERVICES
 void ListEntitiesServicesArgument::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_string(1, this->name_ref_);
@@ -2006,9 +2037,12 @@ bool BluetoothGATTWriteRequest::decode_varint(uint32_t field_id, ProtoVarInt val
 }
 bool BluetoothGATTWriteRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
   switch (field_id) {
-    case 4:
-      this->data = value.as_string();
+    case 4: {
+      // Use raw data directly to avoid allocation
+      this->data = value.data();
+      this->data_len = value.size();
       break;
+    }
     default:
       return false;
   }
@@ -2042,9 +2076,12 @@ bool BluetoothGATTWriteDescriptorRequest::decode_varint(uint32_t field_id, Proto
 }
 bool BluetoothGATTWriteDescriptorRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
   switch (field_id) {
-    case 3:
-      this->data = value.as_string();
+    case 3: {
+      // Use raw data directly to avoid allocation
+      this->data = value.data();
+      this->data_len = value.size();
       break;
+    }
     default:
       return false;
   }
@@ -2153,10 +2190,12 @@ void BluetoothDeviceClearCacheResponse::calculate_size(ProtoSize &size) const {
 void BluetoothScannerStateResponse::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_uint32(1, static_cast<uint32_t>(this->state));
   buffer.encode_uint32(2, static_cast<uint32_t>(this->mode));
+  buffer.encode_uint32(3, static_cast<uint32_t>(this->configured_mode));
 }
 void BluetoothScannerStateResponse::calculate_size(ProtoSize &size) const {
   size.add_uint32(1, static_cast<uint32_t>(this->state));
   size.add_uint32(1, static_cast<uint32_t>(this->mode));
+  size.add_uint32(1, static_cast<uint32_t>(this->configured_mode));
 }
 bool BluetoothScannerSetModeRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
   switch (field_id) {
@@ -2358,6 +2397,52 @@ void VoiceAssistantWakeWord::calculate_size(ProtoSize &size) const {
     }
   }
 }
+bool VoiceAssistantExternalWakeWord::decode_varint(uint32_t field_id, ProtoVarInt value) {
+  switch (field_id) {
+    case 5:
+      this->model_size = value.as_uint32();
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
+bool VoiceAssistantExternalWakeWord::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+  switch (field_id) {
+    case 1:
+      this->id = value.as_string();
+      break;
+    case 2:
+      this->wake_word = value.as_string();
+      break;
+    case 3:
+      this->trained_languages.push_back(value.as_string());
+      break;
+    case 4:
+      this->model_type = value.as_string();
+      break;
+    case 6:
+      this->model_hash = value.as_string();
+      break;
+    case 7:
+      this->url = value.as_string();
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
+bool VoiceAssistantConfigurationRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+  switch (field_id) {
+    case 1:
+      this->external_wake_words.emplace_back();
+      value.decode_to_message(this->external_wake_words.back());
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
 void VoiceAssistantConfigurationResponse::encode(ProtoWriteBuffer buffer) const {
   for (auto &it : this->available_wake_words) {
     buffer.encode_message(1, it, true);
@@ -3001,5 +3086,53 @@ bool UpdateCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
   return true;
 }
 #endif
+#ifdef USE_ZWAVE_PROXY
+bool ZWaveProxyFrame::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+  switch (field_id) {
+    case 1: {
+      // Use raw data directly to avoid allocation
+      this->data = value.data();
+      this->data_len = value.size();
+      break;
+    }
+    default:
+      return false;
+  }
+  return true;
+}
+void ZWaveProxyFrame::encode(ProtoWriteBuffer buffer) const { buffer.encode_bytes(1, this->data, this->data_len); }
+void ZWaveProxyFrame::calculate_size(ProtoSize &size) const { size.add_length(1, this->data_len); }
+bool ZWaveProxyRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
+  switch (field_id) {
+    case 1:
+      this->type = static_cast<enums::ZWaveProxyRequestType>(value.as_uint32());
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
+bool ZWaveProxyRequest::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
+  switch (field_id) {
+    case 2: {
+      // Use raw data directly to avoid allocation
+      this->data = value.data();
+      this->data_len = value.size();
+      break;
+    }
+    default:
+      return false;
+  }
+  return true;
+}
+void ZWaveProxyRequest::encode(ProtoWriteBuffer buffer) const {
+  buffer.encode_uint32(1, static_cast<uint32_t>(this->type));
+  buffer.encode_bytes(2, this->data, this->data_len);
+}
+void ZWaveProxyRequest::calculate_size(ProtoSize &size) const {
+  size.add_uint32(1, static_cast<uint32_t>(this->type));
+  size.add_length(2, this->data_len);
+}
+#endif
 
 }  // namespace esphome::api

esphome/components/api/api_pb2_dump.cpp

@@ -655,10 +655,26 @@ template<> const char *proto_enum_to_string<enums::UpdateCommand>(enums::UpdateC
   }
 }
 #endif
+#ifdef USE_ZWAVE_PROXY
+template<> const char *proto_enum_to_string<enums::ZWaveProxyRequestType>(enums::ZWaveProxyRequestType value) {
+  switch (value) {
+    case enums::ZWAVE_PROXY_REQUEST_TYPE_SUBSCRIBE:
+      return "ZWAVE_PROXY_REQUEST_TYPE_SUBSCRIBE";
+    case enums::ZWAVE_PROXY_REQUEST_TYPE_UNSUBSCRIBE:
+      return "ZWAVE_PROXY_REQUEST_TYPE_UNSUBSCRIBE";
+    case enums::ZWAVE_PROXY_REQUEST_TYPE_HOME_ID_CHANGE:
+      return "ZWAVE_PROXY_REQUEST_TYPE_HOME_ID_CHANGE";
+    default:
+      return "UNKNOWN";
+  }
+}
+#endif
 
 void HelloRequest::dump_to(std::string &out) const {
   MessageDumpHelper helper(out, "HelloRequest");
-  dump_field(out, "client_info", this->client_info);
+  out.append("  client_info: ");
+  out.append(format_hex_pretty(this->client_info, this->client_info_len));
+  out.append("\n");
   dump_field(out, "api_version_major", this->api_version_major);
   dump_field(out, "api_version_minor", this->api_version_minor);
 }
@@ -669,8 +685,18 @@ void HelloResponse::dump_to(std::string &out) const {
   dump_field(out, "server_info", this->server_info_ref_);
   dump_field(out, "name", this->name_ref_);
 }
-void ConnectRequest::dump_to(std::string &out) const { dump_field(out, "password", this->password); }
-void ConnectResponse::dump_to(std::string &out) const { dump_field(out, "invalid_password", this->invalid_password); }
+#ifdef USE_API_PASSWORD
+void AuthenticationRequest::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "AuthenticationRequest");
+  out.append("  password: ");
+  out.append(format_hex_pretty(this->password, this->password_len));
+  out.append("\n");
+}
+void AuthenticationResponse::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "AuthenticationResponse");
+  dump_field(out, "invalid_password", this->invalid_password);
+}
+#endif
 void DisconnectRequest::dump_to(std::string &out) const { out.append("DisconnectRequest {}"); }
 void DisconnectResponse::dump_to(std::string &out) const { out.append("DisconnectResponse {}"); }
 void PingRequest::dump_to(std::string &out) const { out.append("PingRequest {}"); }
@@ -749,6 +775,12 @@ void DeviceInfoResponse::dump_to(std::string &out) const {
   this->area.dump_to(out);
   out.append("\n");
 #endif
+#ifdef USE_ZWAVE_PROXY
+  dump_field(out, "zwave_proxy_feature_flags", this->zwave_proxy_feature_flags);
+#endif
+#ifdef USE_ZWAVE_PROXY
+  dump_field(out, "zwave_home_id", this->zwave_home_id);
+#endif
 }
 void ListEntitiesRequest::dump_to(std::string &out) const { out.append("ListEntitiesRequest {}"); }
 void ListEntitiesDoneResponse::dump_to(std::string &out) const { out.append("ListEntitiesDoneResponse {}"); }
@@ -1071,8 +1103,8 @@ void HomeassistantServiceMap::dump_to(std::string &out) const {
   dump_field(out, "key", this->key_ref_);
   dump_field(out, "value", this->value);
 }
-void HomeassistantServiceResponse::dump_to(std::string &out) const {
-  MessageDumpHelper helper(out, "HomeassistantServiceResponse");
+void HomeassistantActionRequest::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "HomeassistantActionRequest");
   dump_field(out, "service", this->service_ref_);
   for (const auto &it : this->data) {
     out.append("  data: ");
@@ -1110,7 +1142,13 @@ void HomeAssistantStateResponse::dump_to(std::string &out) const {
 }
 #endif
 void GetTimeRequest::dump_to(std::string &out) const { out.append("GetTimeRequest {}"); }
-void GetTimeResponse::dump_to(std::string &out) const { dump_field(out, "epoch_seconds", this->epoch_seconds); }
+void GetTimeResponse::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "GetTimeResponse");
+  dump_field(out, "epoch_seconds", this->epoch_seconds);
+  out.append("  timezone: ");
+  out.append(format_hex_pretty(this->timezone, this->timezone_len));
+  out.append("\n");
+}
 #ifdef USE_API_SERVICES
 void ListEntitiesServicesArgument::dump_to(std::string &out) const {
   MessageDumpHelper helper(out, "ListEntitiesServicesArgument");
@@ -1135,7 +1173,7 @@ void ExecuteServiceArgument::dump_to(std::string &out) const {
   dump_field(out, "string_", this->string_);
   dump_field(out, "int_", this->int_);
   for (const auto it : this->bool_array) {
-    dump_field(out, "bool_array", it, 4);
+    dump_field(out, "bool_array", static_cast<bool>(it), 4);
   }
   for (const auto &it : this->int_array) {
     dump_field(out, "int_array", it, 4);
@@ -1622,7 +1660,7 @@ void BluetoothGATTWriteRequest::dump_to(std::string &out) const {
   dump_field(out, "handle", this->handle);
   dump_field(out, "response", this->response);
   out.append("  data: ");
-  out.append(format_hex_pretty(reinterpret_cast<const uint8_t *>(this->data.data()), this->data.size()));
+  out.append(format_hex_pretty(this->data, this->data_len));
   out.append("\n");
 }
 void BluetoothGATTReadDescriptorRequest::dump_to(std::string &out) const {
@@ -1635,7 +1673,7 @@ void BluetoothGATTWriteDescriptorRequest::dump_to(std::string &out) const {
   dump_field(out, "address", this->address);
   dump_field(out, "handle", this->handle);
   out.append("  data: ");
-  out.append(format_hex_pretty(reinterpret_cast<const uint8_t *>(this->data.data()), this->data.size()));
+  out.append(format_hex_pretty(this->data, this->data_len));
   out.append("\n");
 }
 void BluetoothGATTNotifyRequest::dump_to(std::string &out) const {
@@ -1704,6 +1742,7 @@ void BluetoothScannerStateResponse::dump_to(std::string &out) const {
   MessageDumpHelper helper(out, "BluetoothScannerStateResponse");
   dump_field(out, "state", static_cast<enums::BluetoothScannerState>(this->state));
   dump_field(out, "mode", static_cast<enums::BluetoothScannerMode>(this->mode));
+  dump_field(out, "configured_mode", static_cast<enums::BluetoothScannerMode>(this->configured_mode));
 }
 void BluetoothScannerSetModeRequest::dump_to(std::string &out) const {
   MessageDumpHelper helper(out, "BluetoothScannerSetModeRequest");
@@ -1787,8 +1826,25 @@ void VoiceAssistantWakeWord::dump_to(std::string &out) const {
     dump_field(out, "trained_languages", it, 4);
   }
 }
+void VoiceAssistantExternalWakeWord::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "VoiceAssistantExternalWakeWord");
+  dump_field(out, "id", this->id);
+  dump_field(out, "wake_word", this->wake_word);
+  for (const auto &it : this->trained_languages) {
+    dump_field(out, "trained_languages", it, 4);
+  }
+  dump_field(out, "model_type", this->model_type);
+  dump_field(out, "model_size", this->model_size);
+  dump_field(out, "model_hash", this->model_hash);
+  dump_field(out, "url", this->url);
+}
 void VoiceAssistantConfigurationRequest::dump_to(std::string &out) const {
-  out.append("VoiceAssistantConfigurationRequest {}");
+  MessageDumpHelper helper(out, "VoiceAssistantConfigurationRequest");
+  for (const auto &it : this->external_wake_words) {
+    out.append("  external_wake_words: ");
+    it.dump_to(out);
+    out.append("\n");
+  }
 }
 void VoiceAssistantConfigurationResponse::dump_to(std::string &out) const {
   MessageDumpHelper helper(out, "VoiceAssistantConfigurationResponse");
@@ -2097,6 +2153,21 @@ void UpdateCommandRequest::dump_to(std::string &out) const {
 #endif
 }
 #endif
+#ifdef USE_ZWAVE_PROXY
+void ZWaveProxyFrame::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "ZWaveProxyFrame");
+  out.append("  data: ");
+  out.append(format_hex_pretty(this->data, this->data_len));
+  out.append("\n");
+}
+void ZWaveProxyRequest::dump_to(std::string &out) const {
+  MessageDumpHelper helper(out, "ZWaveProxyRequest");
+  dump_field(out, "type", static_cast<enums::ZWaveProxyRequestType>(this->type));
+  out.append("  data: ");
+  out.append(format_hex_pretty(this->data, this->data_len));
+  out.append("\n");
+}
+#endif
 
 }  // namespace esphome::api
 

esphome/components/api/api_pb2_service.cpp

@@ -24,15 +24,17 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_hello_request(msg);
       break;
     }
-    case ConnectRequest::MESSAGE_TYPE: {
-      ConnectRequest msg;
+#ifdef USE_API_PASSWORD
+    case AuthenticationRequest::MESSAGE_TYPE: {
+      AuthenticationRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
-      ESP_LOGVV(TAG, "on_connect_request: %s", msg.dump().c_str());
+      ESP_LOGVV(TAG, "on_authentication_request: %s", msg.dump().c_str());
 #endif
-      this->on_connect_request(msg);
+      this->on_authentication_request(msg);
       break;
     }
+#endif
     case DisconnectRequest::MESSAGE_TYPE: {
       DisconnectRequest msg;
       // Empty message: no decode needed
@@ -160,15 +162,6 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       break;
     }
 #endif
-    case GetTimeRequest::MESSAGE_TYPE: {
-      GetTimeRequest msg;
-      // Empty message: no decode needed
-#ifdef HAS_PROTO_MESSAGE_DUMP
-      ESP_LOGVV(TAG, "on_get_time_request: %s", msg.dump().c_str());
-#endif
-      this->on_get_time_request(msg);
-      break;
-    }
     case GetTimeResponse::MESSAGE_TYPE: {
       GetTimeResponse msg;
       msg.decode(msg_data, msg_size);
@@ -555,7 +548,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
 #ifdef USE_VOICE_ASSISTANT
     case VoiceAssistantConfigurationRequest::MESSAGE_TYPE: {
       VoiceAssistantConfigurationRequest msg;
-      // Empty message: no decode needed
+      msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_voice_assistant_configuration_request: %s", msg.dump().c_str());
 #endif
@@ -595,6 +588,28 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_bluetooth_scanner_set_mode_request(msg);
       break;
     }
+#endif
+#ifdef USE_ZWAVE_PROXY
+    case ZWaveProxyFrame::MESSAGE_TYPE: {
+      ZWaveProxyFrame msg;
+      msg.decode(msg_data, msg_size);
+#ifdef HAS_PROTO_MESSAGE_DUMP
+      ESP_LOGVV(TAG, "on_z_wave_proxy_frame: %s", msg.dump().c_str());
+#endif
+      this->on_z_wave_proxy_frame(msg);
+      break;
+    }
+#endif
+#ifdef USE_ZWAVE_PROXY
+    case ZWaveProxyRequest::MESSAGE_TYPE: {
+      ZWaveProxyRequest msg;
+      msg.decode(msg_data, msg_size);
+#ifdef HAS_PROTO_MESSAGE_DUMP
+      ESP_LOGVV(TAG, "on_z_wave_proxy_request: %s", msg.dump().c_str());
+#endif
+      this->on_z_wave_proxy_request(msg);
+      break;
+    }
 #endif
     default:
       break;
@@ -606,11 +621,13 @@ void APIServerConnection::on_hello_request(const HelloRequest &msg) {
     this->on_fatal_error();
   }
 }
-void APIServerConnection::on_connect_request(const ConnectRequest &msg) {
-  if (!this->send_connect_response(msg)) {
+#ifdef USE_API_PASSWORD
+void APIServerConnection::on_authentication_request(const AuthenticationRequest &msg) {
+  if (!this->send_authenticate_response(msg)) {
     this->on_fatal_error();
   }
 }
+#endif
 void APIServerConnection::on_disconnect_request(const DisconnectRequest &msg) {
   if (!this->send_disconnect_response(msg)) {
     this->on_fatal_error();
@@ -622,246 +639,139 @@ void APIServerConnection::on_ping_request(const PingRequest &msg) {
   }
 }
 void APIServerConnection::on_device_info_request(const DeviceInfoRequest &msg) {
-  if (this->check_connection_setup_() && !this->send_device_info_response(msg)) {
+  if (!this->send_device_info_response(msg)) {
     this->on_fatal_error();
   }
 }
-void APIServerConnection::on_list_entities_request(const ListEntitiesRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->list_entities(msg);
-  }
-}
+void APIServerConnection::on_list_entities_request(const ListEntitiesRequest &msg) { this->list_entities(msg); }
 void APIServerConnection::on_subscribe_states_request(const SubscribeStatesRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_states(msg);
-  }
-}
-void APIServerConnection::on_subscribe_logs_request(const SubscribeLogsRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_logs(msg);
-  }
+  this->subscribe_states(msg);
 }
+void APIServerConnection::on_subscribe_logs_request(const SubscribeLogsRequest &msg) { this->subscribe_logs(msg); }
 #ifdef USE_API_HOMEASSISTANT_SERVICES
 void APIServerConnection::on_subscribe_homeassistant_services_request(
     const SubscribeHomeassistantServicesRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_homeassistant_services(msg);
-  }
+  this->subscribe_homeassistant_services(msg);
 }
 #endif
 #ifdef USE_API_HOMEASSISTANT_STATES
 void APIServerConnection::on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_home_assistant_states(msg);
-  }
+  this->subscribe_home_assistant_states(msg);
 }
 #endif
-void APIServerConnection::on_get_time_request(const GetTimeRequest &msg) {
-  if (this->check_connection_setup_() && !this->send_get_time_response(msg)) {
-    this->on_fatal_error();
-  }
-}
 #ifdef USE_API_SERVICES
-void APIServerConnection::on_execute_service_request(const ExecuteServiceRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->execute_service(msg);
-  }
-}
+void APIServerConnection::on_execute_service_request(const ExecuteServiceRequest &msg) { this->execute_service(msg); }
 #endif
 #ifdef USE_API_NOISE
 void APIServerConnection::on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &msg) {
-  if (this->check_authenticated_() && !this->send_noise_encryption_set_key_response(msg)) {
+  if (!this->send_noise_encryption_set_key_response(msg)) {
     this->on_fatal_error();
   }
 }
 #endif
 #ifdef USE_BUTTON
-void APIServerConnection::on_button_command_request(const ButtonCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->button_command(msg);
-  }
-}
+void APIServerConnection::on_button_command_request(const ButtonCommandRequest &msg) { this->button_command(msg); }
 #endif
 #ifdef USE_CAMERA
-void APIServerConnection::on_camera_image_request(const CameraImageRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->camera_image(msg);
-  }
-}
+void APIServerConnection::on_camera_image_request(const CameraImageRequest &msg) { this->camera_image(msg); }
 #endif
 #ifdef USE_CLIMATE
-void APIServerConnection::on_climate_command_request(const ClimateCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->climate_command(msg);
-  }
-}
+void APIServerConnection::on_climate_command_request(const ClimateCommandRequest &msg) { this->climate_command(msg); }
 #endif
 #ifdef USE_COVER
-void APIServerConnection::on_cover_command_request(const CoverCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->cover_command(msg);
-  }
-}
+void APIServerConnection::on_cover_command_request(const CoverCommandRequest &msg) { this->cover_command(msg); }
 #endif
 #ifdef USE_DATETIME_DATE
-void APIServerConnection::on_date_command_request(const DateCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->date_command(msg);
-  }
-}
+void APIServerConnection::on_date_command_request(const DateCommandRequest &msg) { this->date_command(msg); }
 #endif
 #ifdef USE_DATETIME_DATETIME
 void APIServerConnection::on_date_time_command_request(const DateTimeCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->datetime_command(msg);
-  }
+  this->datetime_command(msg);
 }
 #endif
 #ifdef USE_FAN
-void APIServerConnection::on_fan_command_request(const FanCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->fan_command(msg);
-  }
-}
+void APIServerConnection::on_fan_command_request(const FanCommandRequest &msg) { this->fan_command(msg); }
 #endif
 #ifdef USE_LIGHT
-void APIServerConnection::on_light_command_request(const LightCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->light_command(msg);
-  }
-}
+void APIServerConnection::on_light_command_request(const LightCommandRequest &msg) { this->light_command(msg); }
 #endif
 #ifdef USE_LOCK
-void APIServerConnection::on_lock_command_request(const LockCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->lock_command(msg);
-  }
-}
+void APIServerConnection::on_lock_command_request(const LockCommandRequest &msg) { this->lock_command(msg); }
 #endif
 #ifdef USE_MEDIA_PLAYER
 void APIServerConnection::on_media_player_command_request(const MediaPlayerCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->media_player_command(msg);
-  }
+  this->media_player_command(msg);
 }
 #endif
 #ifdef USE_NUMBER
-void APIServerConnection::on_number_command_request(const NumberCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->number_command(msg);
-  }
-}
+void APIServerConnection::on_number_command_request(const NumberCommandRequest &msg) { this->number_command(msg); }
 #endif
 #ifdef USE_SELECT
-void APIServerConnection::on_select_command_request(const SelectCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->select_command(msg);
-  }
-}
+void APIServerConnection::on_select_command_request(const SelectCommandRequest &msg) { this->select_command(msg); }
 #endif
 #ifdef USE_SIREN
-void APIServerConnection::on_siren_command_request(const SirenCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->siren_command(msg);
-  }
-}
+void APIServerConnection::on_siren_command_request(const SirenCommandRequest &msg) { this->siren_command(msg); }
 #endif
 #ifdef USE_SWITCH
-void APIServerConnection::on_switch_command_request(const SwitchCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->switch_command(msg);
-  }
-}
+void APIServerConnection::on_switch_command_request(const SwitchCommandRequest &msg) { this->switch_command(msg); }
 #endif
 #ifdef USE_TEXT
-void APIServerConnection::on_text_command_request(const TextCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->text_command(msg);
-  }
-}
+void APIServerConnection::on_text_command_request(const TextCommandRequest &msg) { this->text_command(msg); }
 #endif
 #ifdef USE_DATETIME_TIME
-void APIServerConnection::on_time_command_request(const TimeCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->time_command(msg);
-  }
-}
+void APIServerConnection::on_time_command_request(const TimeCommandRequest &msg) { this->time_command(msg); }
 #endif
 #ifdef USE_UPDATE
-void APIServerConnection::on_update_command_request(const UpdateCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->update_command(msg);
-  }
-}
+void APIServerConnection::on_update_command_request(const UpdateCommandRequest &msg) { this->update_command(msg); }
 #endif
 #ifdef USE_VALVE
-void APIServerConnection::on_valve_command_request(const ValveCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->valve_command(msg);
-  }
-}
+void APIServerConnection::on_valve_command_request(const ValveCommandRequest &msg) { this->valve_command(msg); }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_subscribe_bluetooth_le_advertisements_request(
     const SubscribeBluetoothLEAdvertisementsRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_bluetooth_le_advertisements(msg);
-  }
+  this->subscribe_bluetooth_le_advertisements(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_device_request(const BluetoothDeviceRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_device_request(msg);
-  }
+  this->bluetooth_device_request(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_get_services_request(const BluetoothGATTGetServicesRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_get_services(msg);
-  }
+  this->bluetooth_gatt_get_services(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_read_request(const BluetoothGATTReadRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_read(msg);
-  }
+  this->bluetooth_gatt_read(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_write_request(const BluetoothGATTWriteRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_write(msg);
-  }
+  this->bluetooth_gatt_write(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_read_descriptor_request(const BluetoothGATTReadDescriptorRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_read_descriptor(msg);
-  }
+  this->bluetooth_gatt_read_descriptor(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_write_descriptor_request(const BluetoothGATTWriteDescriptorRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_write_descriptor(msg);
-  }
+  this->bluetooth_gatt_write_descriptor(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_gatt_notify_request(const BluetoothGATTNotifyRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_gatt_notify(msg);
-  }
+  this->bluetooth_gatt_notify(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_subscribe_bluetooth_connections_free_request(
     const SubscribeBluetoothConnectionsFreeRequest &msg) {
-  if (this->check_authenticated_() && !this->send_subscribe_bluetooth_connections_free_response(msg)) {
+  if (!this->send_subscribe_bluetooth_connections_free_response(msg)) {
     this->on_fatal_error();
   }
 }
@@ -869,45 +779,68 @@ void APIServerConnection::on_subscribe_bluetooth_connections_free_request(
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_unsubscribe_bluetooth_le_advertisements_request(
     const UnsubscribeBluetoothLEAdvertisementsRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->unsubscribe_bluetooth_le_advertisements(msg);
-  }
+  this->unsubscribe_bluetooth_le_advertisements(msg);
 }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_bluetooth_scanner_set_mode_request(const BluetoothScannerSetModeRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->bluetooth_scanner_set_mode(msg);
-  }
+  this->bluetooth_scanner_set_mode(msg);
 }
 #endif
 #ifdef USE_VOICE_ASSISTANT
 void APIServerConnection::on_subscribe_voice_assistant_request(const SubscribeVoiceAssistantRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->subscribe_voice_assistant(msg);
-  }
+  this->subscribe_voice_assistant(msg);
 }
 #endif
 #ifdef USE_VOICE_ASSISTANT
 void APIServerConnection::on_voice_assistant_configuration_request(const VoiceAssistantConfigurationRequest &msg) {
-  if (this->check_authenticated_() && !this->send_voice_assistant_get_configuration_response(msg)) {
+  if (!this->send_voice_assistant_get_configuration_response(msg)) {
     this->on_fatal_error();
   }
 }
 #endif
 #ifdef USE_VOICE_ASSISTANT
 void APIServerConnection::on_voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) {
-  if (this->check_authenticated_()) {
-    this->voice_assistant_set_configuration(msg);
-  }
+  this->voice_assistant_set_configuration(msg);
 }
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
 void APIServerConnection::on_alarm_control_panel_command_request(const AlarmControlPanelCommandRequest &msg) {
-  if (this->check_authenticated_()) {
-    this->alarm_control_panel_command(msg);
-  }
+  this->alarm_control_panel_command(msg);
 }
 #endif
+#ifdef USE_ZWAVE_PROXY
+void APIServerConnection::on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) { this->zwave_proxy_frame(msg); }
+#endif
+#ifdef USE_ZWAVE_PROXY
+void APIServerConnection::on_z_wave_proxy_request(const ZWaveProxyRequest &msg) { this->zwave_proxy_request(msg); }
+#endif
+
+void APIServerConnection::read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) {
+  // Check authentication/connection requirements for messages
+  switch (msg_type) {
+    case HelloRequest::MESSAGE_TYPE:  // No setup required
+#ifdef USE_API_PASSWORD
+    case AuthenticationRequest::MESSAGE_TYPE:  // No setup required
+#endif
+    case DisconnectRequest::MESSAGE_TYPE:  // No setup required
+    case PingRequest::MESSAGE_TYPE:        // No setup required
+      break;                               // Skip all checks for these messages
+    case DeviceInfoRequest::MESSAGE_TYPE:  // Connection setup only
+      if (!this->check_connection_setup_()) {
+        return;  // Connection not setup
+      }
+      break;
+    default:
+      // All other messages require authentication (which includes connection check)
+      if (!this->check_authenticated_()) {
+        return;  // Authentication failed
+      }
+      break;
+  }
+
+  // Call base implementation to process the message
+  APIServerConnectionBase::read_message(msg_size, msg_type, msg_data);
+}
 
 }  // namespace esphome::api

esphome/components/api/api_pb2_service.h

@@ -26,7 +26,9 @@ class APIServerConnectionBase : public ProtoService {
 
   virtual void on_hello_request(const HelloRequest &value){};
 
-  virtual void on_connect_request(const ConnectRequest &value){};
+#ifdef USE_API_PASSWORD
+  virtual void on_authentication_request(const AuthenticationRequest &value){};
+#endif
 
   virtual void on_disconnect_request(const DisconnectRequest &value){};
   virtual void on_disconnect_response(const DisconnectResponse &value){};
@@ -71,7 +73,7 @@ class APIServerConnectionBase : public ProtoService {
 #ifdef USE_API_HOMEASSISTANT_STATES
   virtual void on_home_assistant_state_response(const HomeAssistantStateResponse &value){};
 #endif
-  virtual void on_get_time_request(const GetTimeRequest &value){};
+
   virtual void on_get_time_response(const GetTimeResponse &value){};
 
 #ifdef USE_API_SERVICES
@@ -205,6 +207,12 @@ class APIServerConnectionBase : public ProtoService {
 
 #ifdef USE_UPDATE
   virtual void on_update_command_request(const UpdateCommandRequest &value){};
+#endif
+#ifdef USE_ZWAVE_PROXY
+  virtual void on_z_wave_proxy_frame(const ZWaveProxyFrame &value){};
+#endif
+#ifdef USE_ZWAVE_PROXY
+  virtual void on_z_wave_proxy_request(const ZWaveProxyRequest &value){};
 #endif
  protected:
   void read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) override;
@@ -213,7 +221,9 @@ class APIServerConnectionBase : public ProtoService {
 class APIServerConnection : public APIServerConnectionBase {
  public:
   virtual bool send_hello_response(const HelloRequest &msg) = 0;
-  virtual bool send_connect_response(const ConnectRequest &msg) = 0;
+#ifdef USE_API_PASSWORD
+  virtual bool send_authenticate_response(const AuthenticationRequest &msg) = 0;
+#endif
   virtual bool send_disconnect_response(const DisconnectRequest &msg) = 0;
   virtual bool send_ping_response(const PingRequest &msg) = 0;
   virtual bool send_device_info_response(const DeviceInfoRequest &msg) = 0;
@@ -226,7 +236,6 @@ class APIServerConnection : public APIServerConnectionBase {
 #ifdef USE_API_HOMEASSISTANT_STATES
   virtual void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) = 0;
 #endif
-  virtual bool send_get_time_response(const GetTimeRequest &msg) = 0;
 #ifdef USE_API_SERVICES
   virtual void execute_service(const ExecuteServiceRequest &msg) = 0;
 #endif
@@ -332,10 +341,18 @@ class APIServerConnection : public APIServerConnectionBase {
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
   virtual void alarm_control_panel_command(const AlarmControlPanelCommandRequest &msg) = 0;
+#endif
+#ifdef USE_ZWAVE_PROXY
+  virtual void zwave_proxy_frame(const ZWaveProxyFrame &msg) = 0;
+#endif
+#ifdef USE_ZWAVE_PROXY
+  virtual void zwave_proxy_request(const ZWaveProxyRequest &msg) = 0;
 #endif
  protected:
   void on_hello_request(const HelloRequest &msg) override;
-  void on_connect_request(const ConnectRequest &msg) override;
+#ifdef USE_API_PASSWORD
+  void on_authentication_request(const AuthenticationRequest &msg) override;
+#endif
   void on_disconnect_request(const DisconnectRequest &msg) override;
   void on_ping_request(const PingRequest &msg) override;
   void on_device_info_request(const DeviceInfoRequest &msg) override;
@@ -348,7 +365,6 @@ class APIServerConnection : public APIServerConnectionBase {
 #ifdef USE_API_HOMEASSISTANT_STATES
   void on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) override;
 #endif
-  void on_get_time_request(const GetTimeRequest &msg) override;
 #ifdef USE_API_SERVICES
   void on_execute_service_request(const ExecuteServiceRequest &msg) override;
 #endif
@@ -455,6 +471,13 @@ class APIServerConnection : public APIServerConnectionBase {
 #ifdef USE_ALARM_CONTROL_PANEL
   void on_alarm_control_panel_command_request(const AlarmControlPanelCommandRequest &msg) override;
 #endif
+#ifdef USE_ZWAVE_PROXY
+  void on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) override;
+#endif
+#ifdef USE_ZWAVE_PROXY
+  void on_z_wave_proxy_request(const ZWaveProxyRequest &msg) override;
+#endif
+  void read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) override;
 };
 
 }  // namespace esphome::api

esphome/components/api/api_server.cpp

@@ -37,12 +37,14 @@ void APIServer::setup() {
 
   this->noise_pref_ = global_preferences->make_preference<SavedNoisePsk>(hash, true);
 
+#ifndef USE_API_NOISE_PSK_FROM_YAML
+  // Only load saved PSK if not set from YAML
   SavedNoisePsk noise_pref_saved{};
   if (this->noise_pref_.load(&noise_pref_saved)) {
     ESP_LOGD(TAG, "Loaded saved Noise PSK");
-
     this->set_noise_psk(noise_pref_saved.psk);
   }
+#endif
 #endif
 
   // Schedule reboot if no clients connect within timeout
@@ -85,7 +87,7 @@ void APIServer::setup() {
     return;
   }
 
-  err = this->socket_->listen(4);
+  err = this->socket_->listen(this->listen_backlog_);
   if (err != 0) {
     ESP_LOGW(TAG, "Socket unable to listen: errno %d", errno);
     this->mark_failed();
@@ -138,9 +140,19 @@ void APIServer::loop() {
     while (true) {
       struct sockaddr_storage source_addr;
       socklen_t addr_len = sizeof(source_addr);
+
       auto sock = this->socket_->accept_loop_monitored((struct sockaddr *) &source_addr, &addr_len);
       if (!sock)
         break;
+
+      // Check if we're at the connection limit
+      if (this->clients_.size() >= this->max_connections_) {
+        ESP_LOGW(TAG, "Max connections (%d), rejecting %s", this->max_connections_, sock->getpeername().c_str());
+        // Immediately close - socket destructor will handle cleanup
+        sock.reset();
+        continue;
+      }
+
       ESP_LOGD(TAG, "Accept %s", sock->getpeername().c_str());
 
       auto *conn = new APIConnection(std::move(sock), this);
@@ -165,7 +177,8 @@ void APIServer::loop() {
     // Network is down - disconnect all clients
     for (auto &client : this->clients_) {
       client->on_fatal_error();
-      ESP_LOGW(TAG, "%s: Network down; disconnect", client->get_client_combined_info().c_str());
+      ESP_LOGW(TAG, "%s (%s): Network down; disconnect", client->client_info_.name.c_str(),
+               client->client_info_.peername.c_str());
     }
     // Continue to process and clean up the clients below
   }
@@ -204,8 +217,10 @@ void APIServer::loop() {
 void APIServer::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Server:\n"
-                "  Address: %s:%u",
-                network::get_use_address().c_str(), this->port_);
+                "  Address: %s:%u\n"
+                "  Listen backlog: %u\n"
+                "  Max connections: %u",
+                network::get_use_address().c_str(), this->port_, this->listen_backlog_, this->max_connections_);
 #ifdef USE_API_NOISE
   ESP_LOGCONFIG(TAG, "  Noise encryption: %s", YESNO(this->noise_ctx_->has_psk()));
   if (!this->noise_ctx_->has_psk()) {
@@ -217,12 +232,12 @@ void APIServer::dump_config() {
 }
 
 #ifdef USE_API_PASSWORD
-bool APIServer::check_password(const std::string &password) const {
+bool APIServer::check_password(const uint8_t *password_data, size_t password_len) const {
   // depend only on input password length
   const char *a = this->password_.c_str();
   uint32_t len_a = this->password_.length();
-  const char *b = password.c_str();
-  uint32_t len_b = password.length();
+  const char *b = reinterpret_cast<const char *>(password_data);
+  uint32_t len_b = password_len;
 
   // disable optimization with volatile
   volatile uint32_t length = len_b;
@@ -245,6 +260,7 @@ bool APIServer::check_password(const std::string &password) const {
 
   return result == 0;
 }
+
 #endif
 
 void APIServer::handle_disconnect(APIConnection *conn) {}
@@ -355,6 +371,15 @@ void APIServer::on_update(update::UpdateEntity *obj) {
 }
 #endif
 
+#ifdef USE_ZWAVE_PROXY
+void APIServer::on_zwave_proxy_request(const esphome::api::ProtoMessage &msg) {
+  // We could add code to manage a second subscription type, but, since this message type is
+  //  very infrequent and small, we simply send it to all clients
+  for (auto &c : this->clients_)
+    c->send_message(msg, api::ZWaveProxyRequest::MESSAGE_TYPE);
+}
+#endif
+
 #ifdef USE_ALARM_CONTROL_PANEL
 API_DISPATCH_UPDATE(alarm_control_panel::AlarmControlPanel, alarm_control_panel)
 #endif
@@ -370,9 +395,9 @@ void APIServer::set_password(const std::string &password) { this->password_ = pa
 void APIServer::set_batch_delay(uint16_t batch_delay) { this->batch_delay_ = batch_delay; }
 
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-void APIServer::send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
+void APIServer::send_homeassistant_action(const HomeassistantActionRequest &call) {
   for (auto &client : this->clients_) {
-    client->send_homeassistant_service_call(call);
+    client->send_homeassistant_action(call);
   }
 }
 #endif
@@ -409,6 +434,12 @@ void APIServer::set_reboot_timeout(uint32_t reboot_timeout) { this->reboot_timeo
 
 #ifdef USE_API_NOISE
 bool APIServer::save_noise_psk(psk_t psk, bool make_active) {
+#ifdef USE_API_NOISE_PSK_FROM_YAML
+  // When PSK is set from YAML, this function should never be called
+  // but if it is, reject the change
+  ESP_LOGW(TAG, "Key set in YAML");
+  return false;
+#else
   auto &old_psk = this->noise_ctx_->get_psk();
   if (std::equal(old_psk.begin(), old_psk.end(), psk.begin())) {
     ESP_LOGW(TAG, "New PSK matches old");
@@ -437,6 +468,7 @@ bool APIServer::save_noise_psk(psk_t psk, bool make_active) {
     });
   }
   return true;
+#endif
 }
 #endif
 

esphome/components/api/api_server.h

@@ -37,13 +37,15 @@ class APIServer : public Component, public Controller {
   void on_shutdown() override;
   bool teardown() override;
 #ifdef USE_API_PASSWORD
-  bool check_password(const std::string &password) const;
+  bool check_password(const uint8_t *password_data, size_t password_len) const;
   void set_password(const std::string &password);
 #endif
   void set_port(uint16_t port);
   void set_reboot_timeout(uint32_t reboot_timeout);
   void set_batch_delay(uint16_t batch_delay);
   uint16_t get_batch_delay() const { return batch_delay_; }
+  void set_listen_backlog(uint8_t listen_backlog) { this->listen_backlog_ = listen_backlog; }
+  void set_max_connections(uint8_t max_connections) { this->max_connections_ = max_connections; }
 
   // Get reference to shared buffer for API connections
   std::vector<uint8_t> &get_shared_buffer_ref() { return shared_write_buffer_; }
@@ -107,7 +109,8 @@ class APIServer : public Component, public Controller {
   void on_media_player_update(media_player::MediaPlayer *obj) override;
 #endif
 #ifdef USE_API_HOMEASSISTANT_SERVICES
-  void send_homeassistant_service_call(const HomeassistantServiceResponse &call);
+  void send_homeassistant_action(const HomeassistantActionRequest &call);
+
 #endif
 #ifdef USE_API_SERVICES
   void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
@@ -125,6 +128,9 @@ class APIServer : public Component, public Controller {
 #ifdef USE_UPDATE
   void on_update(update::UpdateEntity *obj) override;
 #endif
+#ifdef USE_ZWAVE_PROXY
+  void on_zwave_proxy_request(const esphome::api::ProtoMessage &msg);
+#endif
 
   bool is_connected() const;
 
@@ -185,8 +191,12 @@ class APIServer : public Component, public Controller {
   // Group smaller types together
   uint16_t port_{6053};
   uint16_t batch_delay_{100};
+  // Connection limits - these defaults will be overridden by config values
+  // from cv.SplitDefault in __init__.py which sets platform-specific defaults
+  uint8_t listen_backlog_{4};
+  uint8_t max_connections_{8};
   bool shutting_down_ = false;
-  // 5 bytes used, 3 bytes padding
+  // 7 bytes used, 1 byte padding
 
 #ifdef USE_API_NOISE
   std::shared_ptr<APINoiseContext> noise_ctx_ = std::make_shared<APINoiseContext>();

esphome/components/api/client.py

@@ -62,9 +62,11 @@ async def async_run_logs(config: dict[str, Any], addresses: list[str]) -> None:
         time_ = datetime.now()
         message: bytes = msg.message
         text = message.decode("utf8", "backslashreplace")
-        for parsed_msg in parse_log_message(
-            text, f"[{time_.hour:02}:{time_.minute:02}:{time_.second:02}]"
-        ):
+        nanoseconds = time_.microsecond // 1000
+        timestamp = (
+            f"[{time_.hour:02}:{time_.minute:02}:{time_.second:02}.{nanoseconds:03}]"
+        )
+        for parsed_msg in parse_log_message(text, timestamp):
             print(parsed_msg.replace("\033", "\\033") if dashboard else parsed_msg)
 
     stop = await async_run(cli, on_log, name=name)

esphome/components/api/custom_api_device.h

@@ -179,9 +179,9 @@ class CustomAPIDevice {
    * @param service_name The service to call.
    */
   void call_homeassistant_service(const std::string &service_name) {
-    HomeassistantServiceResponse resp;
+    HomeassistantActionRequest resp;
     resp.set_service(StringRef(service_name));
-    global_api_server->send_homeassistant_service_call(resp);
+    global_api_server->send_homeassistant_action(resp);
   }
 
   /** Call a Home Assistant service from ESPHome.
@@ -199,7 +199,7 @@ class CustomAPIDevice {
    * @param data The data for the service call, mapping from string to string.
    */
   void call_homeassistant_service(const std::string &service_name, const std::map<std::string, std::string> &data) {
-    HomeassistantServiceResponse resp;
+    HomeassistantActionRequest resp;
     resp.set_service(StringRef(service_name));
     for (auto &it : data) {
       resp.data.emplace_back();
@@ -207,7 +207,7 @@ class CustomAPIDevice {
       kv.set_key(StringRef(it.first));
       kv.value = it.second;
     }
-    global_api_server->send_homeassistant_service_call(resp);
+    global_api_server->send_homeassistant_action(resp);
   }
 
   /** Fire an ESPHome event in Home Assistant.
@@ -221,10 +221,10 @@ class CustomAPIDevice {
    * @param event_name The event to fire.
    */
   void fire_homeassistant_event(const std::string &event_name) {
-    HomeassistantServiceResponse resp;
+    HomeassistantActionRequest resp;
     resp.set_service(StringRef(event_name));
     resp.is_event = true;
-    global_api_server->send_homeassistant_service_call(resp);
+    global_api_server->send_homeassistant_action(resp);
   }
 
   /** Fire an ESPHome event in Home Assistant.
@@ -241,7 +241,7 @@ class CustomAPIDevice {
    * @param data The data for the event, mapping from string to string.
    */
   void fire_homeassistant_event(const std::string &service_name, const std::map<std::string, std::string> &data) {
-    HomeassistantServiceResponse resp;
+    HomeassistantActionRequest resp;
     resp.set_service(StringRef(service_name));
     resp.is_event = true;
     for (auto &it : data) {
@@ -250,7 +250,7 @@ class CustomAPIDevice {
       kv.set_key(StringRef(it.first));
       kv.value = it.second;
     }
-    global_api_server->send_homeassistant_service_call(resp);
+    global_api_server->send_homeassistant_action(resp);
   }
 #else
   template<typename T = void> void call_homeassistant_service(const std::string &service_name) {

esphome/components/api/homeassistant_service.h

@@ -3,10 +3,10 @@
 #include "api_server.h"
 #ifdef USE_API
 #ifdef USE_API_HOMEASSISTANT_SERVICES
+#include <vector>
 #include "api_pb2.h"
 #include "esphome/core/automation.h"
 #include "esphome/core/helpers.h"
-#include <vector>
 
 namespace esphome::api {
 
@@ -62,7 +62,7 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
   }
 
   void play(Ts... x) override {
-    HomeassistantServiceResponse resp;
+    HomeassistantActionRequest resp;
     std::string service_value = this->service_.value(x...);
     resp.set_service(StringRef(service_value));
     resp.is_event = this->is_event_;
@@ -84,7 +84,7 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
       kv.set_key(StringRef(it.key));
       kv.value = it.value.value(x...);
     }
-    this->parent_->send_homeassistant_service_call(resp);
+    this->parent_->send_homeassistant_action(resp);
   }
 
  protected:

esphome/components/api/proto.cpp

@@ -8,74 +8,70 @@ namespace esphome::api {
 static const char *const TAG = "api.proto";
 
 void ProtoDecodableMessage::decode(const uint8_t *buffer, size_t length) {
-  uint32_t i = 0;
-  bool error = false;
-  while (i < length) {
+  const uint8_t *ptr = buffer;
+  const uint8_t *end = buffer + length;
+
+  while (ptr < end) {
     uint32_t consumed;
-    auto res = ProtoVarInt::parse(&buffer[i], length - i, &consumed);
+
+    // Parse field header
+    auto res = ProtoVarInt::parse(ptr, end - ptr, &consumed);
     if (!res.has_value()) {
-      ESP_LOGV(TAG, "Invalid field start at %" PRIu32, i);
-      break;
+      ESP_LOGV(TAG, "Invalid field start at offset %ld", (long) (ptr - buffer));
+      return;
     }
 
-    uint32_t field_type = (res->as_uint32()) & 0b111;
-    uint32_t field_id = (res->as_uint32()) >> 3;
-    i += consumed;
+    uint32_t tag = res->as_uint32();
+    uint32_t field_type = tag & 0b111;
+    uint32_t field_id = tag >> 3;
+    ptr += consumed;
 
     switch (field_type) {
       case 0: {  // VarInt
-        res = ProtoVarInt::parse(&buffer[i], length - i, &consumed);
+        res = ProtoVarInt::parse(ptr, end - ptr, &consumed);
         if (!res.has_value()) {
-          ESP_LOGV(TAG, "Invalid VarInt at %" PRIu32, i);
-          error = true;
-          break;
+          ESP_LOGV(TAG, "Invalid VarInt at offset %ld", (long) (ptr - buffer));
+          return;
         }
         if (!this->decode_varint(field_id, *res)) {
           ESP_LOGV(TAG, "Cannot decode VarInt field %" PRIu32 " with value %" PRIu32 "!", field_id, res->as_uint32());
         }
-        i += consumed;
+        ptr += consumed;
         break;
       }
       case 2: {  // Length-delimited
-        res = ProtoVarInt::parse(&buffer[i], length - i, &consumed);
+        res = ProtoVarInt::parse(ptr, end - ptr, &consumed);
         if (!res.has_value()) {
-          ESP_LOGV(TAG, "Invalid Length Delimited at %" PRIu32, i);
-          error = true;
-          break;
+          ESP_LOGV(TAG, "Invalid Length Delimited at offset %ld", (long) (ptr - buffer));
+          return;
         }
         uint32_t field_length = res->as_uint32();
-        i += consumed;
-        if (field_length > length - i) {
-          ESP_LOGV(TAG, "Out-of-bounds Length Delimited at %" PRIu32, i);
-          error = true;
-          break;
+        ptr += consumed;
+        if (ptr + field_length > end) {
+          ESP_LOGV(TAG, "Out-of-bounds Length Delimited at offset %ld", (long) (ptr - buffer));
+          return;
         }
-        if (!this->decode_length(field_id, ProtoLengthDelimited(&buffer[i], field_length))) {
+        if (!this->decode_length(field_id, ProtoLengthDelimited(ptr, field_length))) {
           ESP_LOGV(TAG, "Cannot decode Length Delimited field %" PRIu32 "!", field_id);
         }
-        i += field_length;
+        ptr += field_length;
         break;
       }
       case 5: {  // 32-bit
-        if (length - i < 4) {
-          ESP_LOGV(TAG, "Out-of-bounds Fixed32-bit at %" PRIu32, i);
-          error = true;
-          break;
+        if (ptr + 4 > end) {
+          ESP_LOGV(TAG, "Out-of-bounds Fixed32-bit at offset %ld", (long) (ptr - buffer));
+          return;
         }
-        uint32_t val = encode_uint32(buffer[i + 3], buffer[i + 2], buffer[i + 1], buffer[i]);
+        uint32_t val = encode_uint32(ptr[3], ptr[2], ptr[1], ptr[0]);
         if (!this->decode_32bit(field_id, Proto32Bit(val))) {
           ESP_LOGV(TAG, "Cannot decode 32-bit field %" PRIu32 " with value %" PRIu32 "!", field_id, val);
         }
-        i += 4;
+        ptr += 4;
         break;
       }
       default:
-        ESP_LOGV(TAG, "Invalid field type at %" PRIu32, i);
-        error = true;
-        break;
-    }
-    if (error) {
-      break;
+        ESP_LOGV(TAG, "Invalid field type %u at offset %ld", field_type, (long) (ptr - buffer));
+        return;
     }
   }
 }

esphome/components/api/proto.h

@@ -182,6 +182,10 @@ class ProtoLengthDelimited {
   explicit ProtoLengthDelimited(const uint8_t *value, size_t length) : value_(value), length_(length) {}
   std::string as_string() const { return std::string(reinterpret_cast<const char *>(this->value_), this->length_); }
 
+  // Direct access to raw data without string allocation
+  const uint8_t *data() const { return this->value_; }
+  size_t size() const { return this->length_; }
+
   /**
    * Decode the length-delimited data into an existing ProtoDecodableMessage instance.
    *
@@ -827,7 +831,7 @@ class ProtoService {
   }
 
   // Authentication helper methods
-  bool check_connection_setup_() {
+  inline bool check_connection_setup_() {
     if (!this->is_connection_setup()) {
       this->on_no_setup_connection();
       return false;
@@ -835,7 +839,7 @@ class ProtoService {
     return true;
   }
 
-  bool check_authenticated_() {
+  inline bool check_authenticated_() {
 #ifdef USE_API_PASSWORD
     if (!this->check_connection_setup_()) {
       return false;

esphome/components/api/user_services.h

@@ -55,7 +55,7 @@ template<typename... Ts> class UserServiceBase : public UserServiceDescriptor {
 
  protected:
   virtual void execute(Ts... x) = 0;
-  template<int... S> void execute_(std::vector<ExecuteServiceArgument> args, seq<S...> type) {
+  template<int... S> void execute_(const std::vector<ExecuteServiceArgument> &args, seq<S...> type) {
     this->execute((get_execute_arg_value<Ts>(args[S]))...);
   }
 

esphome/components/as7341/sensor.py

@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import i2c, sensor
 import esphome.config_validation as cv
 from esphome.const import (
+    CONF_CLEAR,
     CONF_GAIN,
     CONF_ID,
     DEVICE_CLASS_ILLUMINANCE,
@@ -29,7 +30,6 @@ CONF_F5 = "f5"
 CONF_F6 = "f6"
 CONF_F7 = "f7"
 CONF_F8 = "f8"
-CONF_CLEAR = "clear"
 CONF_NIR = "nir"
 
 UNIT_COUNTS = "#"

esphome/components/async_tcp/__init__.py

@@ -8,7 +8,7 @@ from esphome.const import (
     PLATFORM_LN882X,
     PLATFORM_RTL87XX,
 )
-from esphome.core import CORE, coroutine_with_priority
+from esphome.core import CORE, CoroPriority, coroutine_with_priority
 
 CODEOWNERS = ["@esphome/core"]
 
@@ -27,7 +27,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-@coroutine_with_priority(200.0)
+@coroutine_with_priority(CoroPriority.NETWORK_TRANSPORT)
 async def to_code(config):
     if CORE.is_esp32 or CORE.is_libretiny:
         # https://github.com/ESP32Async/AsyncTCP

esphome/components/atm90e26/sensor.py

@@ -16,6 +16,7 @@ from esphome.const import (
     DEVICE_CLASS_ENERGY,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
+    DEVICE_CLASS_REACTIVE_POWER,
     DEVICE_CLASS_VOLTAGE,
     ICON_CURRENT_AC,
     ICON_LIGHTBULB,
@@ -78,6 +79,7 @@ CONFIG_SCHEMA = (
                 unit_of_measurement=UNIT_VOLT_AMPS_REACTIVE,
                 icon=ICON_LIGHTBULB,
                 accuracy_decimals=2,
+                device_class=DEVICE_CLASS_REACTIVE_POWER,
                 state_class=STATE_CLASS_MEASUREMENT,
             ),
             cv.Optional(CONF_POWER_FACTOR): sensor.sensor_schema(

esphome/components/atm90e32/atm90e32.cpp

@@ -382,20 +382,15 @@ float ATM90E32Component::get_setup_priority() const { return setup_priority::IO;
 // R/C registers can conly be cleared after the LastSPIData register is updated (register 78H)
 // Peakdetect period: 05H. Bit 15:8 are PeakDet_period in ms. 7:0 are Sag_period
 // Default is 143FH (20ms, 63ms)
-uint16_t ATM90E32Component::read16_transaction_(uint16_t a_register) {
+uint16_t ATM90E32Component::read16_(uint16_t a_register) {
+  this->enable();
+  delay_microseconds_safe(1);  // min delay between CS low and first SCK is 200ns - 1us is plenty
   uint8_t addrh = (1 << 7) | ((a_register >> 8) & 0x03);
   uint8_t addrl = (a_register & 0xFF);
   uint8_t data[4] = {addrh, addrl, 0x00, 0x00};
   this->transfer_array(data, 4);
   uint16_t output = encode_uint16(data[2], data[3]);
   ESP_LOGVV(TAG, "read16_ 0x%04" PRIX16 " output 0x%04" PRIX16, a_register, output);
-  return output;
-}
-
-uint16_t ATM90E32Component::read16_(uint16_t a_register) {
-  this->enable();
-  delay_microseconds_safe(1);  // min delay between CS low and first SCK is 200ns - 1us is plenty
-  uint16_t output = this->read16_transaction_(a_register);
   delay_microseconds_safe(1);  // allow the last clock to propagate before releasing CS
   this->disable();
   delay_microseconds_safe(1);  // meet minimum CS high time before next transaction
@@ -403,14 +398,8 @@ uint16_t ATM90E32Component::read16_(uint16_t a_register) {
 }
 
 int ATM90E32Component::read32_(uint16_t addr_h, uint16_t addr_l) {
-  this->enable();
-  delay_microseconds_safe(1);
-  const uint16_t val_h = this->read16_transaction_(addr_h);
-  delay_microseconds_safe(1);
-  const uint16_t val_l = this->read16_transaction_(addr_l);
-  delay_microseconds_safe(1);
-  this->disable();
-  delay_microseconds_safe(1);
+  const uint16_t val_h = this->read16_(addr_h);
+  const uint16_t val_l = this->read16_(addr_l);
   const int32_t val = (val_h << 16) | val_l;
 
   ESP_LOGVV(TAG,

esphome/components/atm90e32/atm90e32.h

@@ -140,7 +140,6 @@ class ATM90E32Component : public PollingComponent,
   number::Number *ref_currents_[3]{nullptr, nullptr, nullptr};
 #endif
   uint16_t read16_(uint16_t a_register);
-  uint16_t read16_transaction_(uint16_t a_register);
   int read32_(uint16_t addr_h, uint16_t addr_l);
   void write16_(uint16_t a_register, uint16_t val, bool validate = true);
   float get_local_phase_voltage_(uint8_t phase);

esphome/components/atm90e32/sensor.py

@@ -17,10 +17,12 @@ from esphome.const import (
     CONF_REACTIVE_POWER,
     CONF_REVERSE_ACTIVE_ENERGY,
     CONF_VOLTAGE,
+    DEVICE_CLASS_APPARENT_POWER,
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_ENERGY,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
+    DEVICE_CLASS_REACTIVE_POWER,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_VOLTAGE,
     ENTITY_CATEGORY_DIAGNOSTIC,
@@ -100,13 +102,13 @@ ATM90E32_PHASE_SCHEMA = cv.Schema(
             unit_of_measurement=UNIT_VOLT_AMPS_REACTIVE,
             icon=ICON_LIGHTBULB,
             accuracy_decimals=2,
-            device_class=DEVICE_CLASS_POWER,
+            device_class=DEVICE_CLASS_REACTIVE_POWER,
             state_class=STATE_CLASS_MEASUREMENT,
         ),
         cv.Optional(CONF_APPARENT_POWER): sensor.sensor_schema(
             unit_of_measurement=UNIT_VOLT_AMPS,
             accuracy_decimals=2,
-            device_class=DEVICE_CLASS_POWER,
+            device_class=DEVICE_CLASS_APPARENT_POWER,
             state_class=STATE_CLASS_MEASUREMENT,
         ),
         cv.Optional(CONF_POWER_FACTOR): sensor.sensor_schema(

esphome/components/audio_adc/__init__.py

@@ -2,7 +2,7 @@ from esphome import automation
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_MIC_GAIN
-from esphome.core import coroutine_with_priority
+from esphome.core import CoroPriority, coroutine_with_priority
 
 CODEOWNERS = ["@kbx81"]
 IS_PLATFORM_COMPONENT = True
@@ -35,7 +35,7 @@ async def audio_adc_set_mic_gain_to_code(config, action_id, template_arg, args):
     return var
 
 
-@coroutine_with_priority(100.0)
+@coroutine_with_priority(CoroPriority.CORE)
 async def to_code(config):
     cg.add_define("USE_AUDIO_ADC")
     cg.add_global(audio_adc_ns.using)

esphome/components/audio_dac/__init__.py

@@ -3,7 +3,7 @@ from esphome.automation import maybe_simple_id
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_VOLUME
-from esphome.core import coroutine_with_priority
+from esphome.core import CoroPriority, coroutine_with_priority
 
 CODEOWNERS = ["@kbx81"]
 IS_PLATFORM_COMPONENT = True
@@ -51,7 +51,7 @@ async def audio_dac_set_volume_to_code(config, action_id, template_arg, args):
     return var
 
 
-@coroutine_with_priority(100.0)
+@coroutine_with_priority(CoroPriority.CORE)
 async def to_code(config):
     cg.add_define("USE_AUDIO_DAC")
     cg.add_global(audio_dac_ns.using)

esphome/components/axs15231/touchscreen/axs15231_touchscreen.cpp

@@ -12,7 +12,7 @@ constexpr static const uint8_t AXS_READ_TOUCHPAD[11] = {0xb5, 0xab, 0xa5, 0x5a,
 
 #define ERROR_CHECK(err) \
   if ((err) != i2c::ERROR_OK) { \
-    this->status_set_warning("Failed to communicate"); \
+    this->status_set_warning(LOG_STR("Failed to communicate")); \
     return; \
   }
 
@@ -41,7 +41,7 @@ void AXS15231Touchscreen::update_touches() {
   i2c::ErrorCode err;
   uint8_t data[8]{};
 
-  err = this->write(AXS_READ_TOUCHPAD, sizeof(AXS_READ_TOUCHPAD), false);
+  err = this->write(AXS_READ_TOUCHPAD, sizeof(AXS_READ_TOUCHPAD));
   ERROR_CHECK(err);
   err = this->read(data, sizeof(data));
   ERROR_CHECK(err);

esphome/components/bedjet/bedjet_hub.cpp

@@ -493,7 +493,7 @@ void BedJetHub::dump_config() {
                 "  ble_client.app_id: %d\n"
                 "  ble_client.conn_id: %d",
                 this->get_name().c_str(), this->parent()->app_id, this->parent()->get_conn_id());
-  LOG_UPDATE_INTERVAL(this)
+  LOG_UPDATE_INTERVAL(this);
   ESP_LOGCONFIG(TAG, "  Child components (%d):", this->children_.size());
   for (auto *child : this->children_) {
     ESP_LOGCONFIG(TAG, "    - %s", child->describe().c_str());

esphome/components/binary_sensor/__init__.py

@@ -59,7 +59,7 @@ from esphome.const import (
     DEVICE_CLASS_VIBRATION,
     DEVICE_CLASS_WINDOW,
 )
-from esphome.core import CORE, coroutine_with_priority
+from esphome.core import CORE, CoroPriority, coroutine_with_priority
 from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
 from esphome.util import Registry
@@ -652,7 +652,7 @@ async def binary_sensor_is_off_to_code(config, condition_id, template_arg, args)
     return cg.new_Pvariable(condition_id, template_arg, paren, False)
 
 
-@coroutine_with_priority(100.0)
+@coroutine_with_priority(CoroPriority.CORE)
 async def to_code(config):
     cg.add_global(binary_sensor_ns.using)
 

esphome/components/binary_sensor/binary_sensor.cpp

@@ -7,6 +7,19 @@ namespace binary_sensor {
 
 static const char *const TAG = "binary_sensor";
 
+// Function implementation of LOG_BINARY_SENSOR macro to reduce code size
+void log_binary_sensor(const char *tag, const char *prefix, const char *type, BinarySensor *obj) {
+  if (obj == nullptr) {
+    return;
+  }
+
+  ESP_LOGCONFIG(tag, "%s%s '%s'", prefix, type, obj->get_name().c_str());
+
+  if (!obj->get_device_class_ref().empty()) {
+    ESP_LOGCONFIG(tag, "%s  Device Class: '%s'", prefix, obj->get_device_class_ref().c_str());
+  }
+}
+
 void BinarySensor::publish_state(bool new_state) {
   if (this->filter_list_ == nullptr) {
     this->send_state_internal(new_state);

esphome/components/binary_sensor/binary_sensor.h

@@ -10,13 +10,10 @@ namespace esphome {
 
 namespace binary_sensor {
 
-#define LOG_BINARY_SENSOR(prefix, type, obj) \
-  if ((obj) != nullptr) { \
-    ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, LOG_STR_LITERAL(type), (obj)->get_name().c_str()); \
-    if (!(obj)->get_device_class().empty()) { \
-      ESP_LOGCONFIG(TAG, "%s  Device Class: '%s'", prefix, (obj)->get_device_class().c_str()); \
-    } \
-  }
+class BinarySensor;
+void log_binary_sensor(const char *tag, const char *prefix, const char *type, BinarySensor *obj);
+
+#define LOG_BINARY_SENSOR(prefix, type, obj) log_binary_sensor(TAG, prefix, LOG_STR_LITERAL(type), obj)
 
 #define SUB_BINARY_SENSOR(name) \
  protected: \

esphome/components/bl0940/__init__.py

@@ -1 +1,6 @@
-CODEOWNERS = ["@tobias-"]
+import esphome.codegen as cg
+
+CODEOWNERS = ["@tobias-", "@dan-s-github"]
+
+CONF_BL0940_ID = "bl0940_id"
+bl0940_ns = cg.esphome_ns.namespace("bl0940")

esphome/components/bl0940/bl0940.cpp

@@ -7,28 +7,26 @@ namespace bl0940 {
 
 static const char *const TAG = "bl0940";
 
-static const uint8_t BL0940_READ_COMMAND = 0x50;  // 0x58 according to documentation
 static const uint8_t BL0940_FULL_PACKET = 0xAA;
-static const uint8_t BL0940_PACKET_HEADER = 0x55;  // 0x58 according to documentation
+static const uint8_t BL0940_PACKET_HEADER = 0x55;  // 0x58 according to en doc but 0x55 in cn doc
 
-static const uint8_t BL0940_WRITE_COMMAND = 0xA0;  // 0xA8 according to documentation
 static const uint8_t BL0940_REG_I_FAST_RMS_CTRL = 0x10;
 static const uint8_t BL0940_REG_MODE = 0x18;
 static const uint8_t BL0940_REG_SOFT_RESET = 0x19;
 static const uint8_t BL0940_REG_USR_WRPROT = 0x1A;
 static const uint8_t BL0940_REG_TPS_CTRL = 0x1B;
 
-const uint8_t BL0940_INIT[5][6] = {
+static const uint8_t BL0940_INIT[5][5] = {
     // Reset to default
-    {BL0940_WRITE_COMMAND, BL0940_REG_SOFT_RESET, 0x5A, 0x5A, 0x5A, 0x38},
+    {BL0940_REG_SOFT_RESET, 0x5A, 0x5A, 0x5A, 0x38},
     // Enable User Operation Write
-    {BL0940_WRITE_COMMAND, BL0940_REG_USR_WRPROT, 0x55, 0x00, 0x00, 0xF0},
+    {BL0940_REG_USR_WRPROT, 0x55, 0x00, 0x00, 0xF0},
     // 0x0100 = CF_UNABLE energy pulse, AC_FREQ_SEL 50Hz, RMS_UPDATE_SEL 800mS
-    {BL0940_WRITE_COMMAND, BL0940_REG_MODE, 0x00, 0x10, 0x00, 0x37},
+    {BL0940_REG_MODE, 0x00, 0x10, 0x00, 0x37},
     // 0x47FF = Over-current and leakage alarm on, Automatic temperature measurement, Interval 100mS
-    {BL0940_WRITE_COMMAND, BL0940_REG_TPS_CTRL, 0xFF, 0x47, 0x00, 0xFE},
+    {BL0940_REG_TPS_CTRL, 0xFF, 0x47, 0x00, 0xFE},
     // 0x181C = Half cycle, Fast RMS threshold 6172
-    {BL0940_WRITE_COMMAND, BL0940_REG_I_FAST_RMS_CTRL, 0x1C, 0x18, 0x00, 0x1B}};
+    {BL0940_REG_I_FAST_RMS_CTRL, 0x1C, 0x18, 0x00, 0x1B}};
 
 void BL0940::loop() {
   DataPacket buffer;
@@ -36,8 +34,8 @@ void BL0940::loop() {
     return;
   }
   if (read_array((uint8_t *) &buffer, sizeof(buffer))) {
-    if (validate_checksum(&buffer)) {
-      received_package_(&buffer);
+    if (this->validate_checksum_(&buffer)) {
+      this->received_package_(&buffer);
     }
   } else {
     ESP_LOGW(TAG, "Junk on wire. Throwing away partial message");
@@ -46,35 +44,151 @@ void BL0940::loop() {
   }
 }
 
-bool BL0940::validate_checksum(const DataPacket *data) {
-  uint8_t checksum = BL0940_READ_COMMAND;
+bool BL0940::validate_checksum_(DataPacket *data) {
+  uint8_t checksum = this->read_command_;
   // Whole package but checksum
-  for (uint32_t i = 0; i < sizeof(data->raw) - 1; i++) {
-    checksum += data->raw[i];
+  uint8_t *raw = (uint8_t *) data;
+  for (uint32_t i = 0; i < sizeof(*data) - 1; i++) {
+    checksum += raw[i];
   }
   checksum ^= 0xFF;
   if (checksum != data->checksum) {
-    ESP_LOGW(TAG, "BL0940 invalid checksum! 0x%02X != 0x%02X", checksum, data->checksum);
+    ESP_LOGW(TAG, "Invalid checksum! 0x%02X != 0x%02X", checksum, data->checksum);
   }
   return checksum == data->checksum;
 }
 
 void BL0940::update() {
   this->flush();
-  this->write_byte(BL0940_READ_COMMAND);
+  this->write_byte(this->read_command_);
   this->write_byte(BL0940_FULL_PACKET);
 }
 
 void BL0940::setup() {
+#ifdef USE_NUMBER
+  // add calibration callbacks
+  if (this->voltage_calibration_number_ != nullptr) {
+    this->voltage_calibration_number_->add_on_state_callback(
+        [this](float state) { this->voltage_calibration_callback_(state); });
+    if (this->voltage_calibration_number_->has_state()) {
+      this->voltage_calibration_callback_(this->voltage_calibration_number_->state);
+    }
+  }
+
+  if (this->current_calibration_number_ != nullptr) {
+    this->current_calibration_number_->add_on_state_callback(
+        [this](float state) { this->current_calibration_callback_(state); });
+    if (this->current_calibration_number_->has_state()) {
+      this->current_calibration_callback_(this->current_calibration_number_->state);
+    }
+  }
+
+  if (this->power_calibration_number_ != nullptr) {
+    this->power_calibration_number_->add_on_state_callback(
+        [this](float state) { this->power_calibration_callback_(state); });
+    if (this->power_calibration_number_->has_state()) {
+      this->power_calibration_callback_(this->power_calibration_number_->state);
+    }
+  }
+
+  if (this->energy_calibration_number_ != nullptr) {
+    this->energy_calibration_number_->add_on_state_callback(
+        [this](float state) { this->energy_calibration_callback_(state); });
+    if (this->energy_calibration_number_->has_state()) {
+      this->energy_calibration_callback_(this->energy_calibration_number_->state);
+    }
+  }
+#endif
+
+  // calculate calibrated reference values
+  this->voltage_reference_cal_ = this->voltage_reference_ / this->voltage_cal_;
+  this->current_reference_cal_ = this->current_reference_ / this->current_cal_;
+  this->power_reference_cal_ = this->power_reference_ / this->power_cal_;
+  this->energy_reference_cal_ = this->energy_reference_ / this->energy_cal_;
+
   for (auto *i : BL0940_INIT) {
-    this->write_array(i, 6);
+    this->write_byte(this->write_command_), this->write_array(i, 5);
     delay(1);
   }
   this->flush();
 }
 
-float BL0940::update_temp_(sensor::Sensor *sensor, ube16_t temperature) const {
-  auto tb = (float) (temperature.h << 8 | temperature.l);
+float BL0940::calculate_power_reference_() {
+  // calculate power reference based on voltage and current reference
+  return this->voltage_reference_cal_ * this->current_reference_cal_ * 4046 / 324004 / 79931;
+}
+
+float BL0940::calculate_energy_reference_() {
+  // formula: 3600000 * 4046 * RL * R1 * 1000 / (1638.4 * 256) / Vref² / (R1 + R2)
+  // or:  power_reference_ * 3600000 / (1638.4 * 256)
+  return this->power_reference_cal_ * 3600000 / (1638.4 * 256);
+}
+
+float BL0940::calculate_calibration_value_(float state) { return (100 + state) / 100; }
+
+void BL0940::reset_calibration() {
+#ifdef USE_NUMBER
+  if (this->current_calibration_number_ != nullptr && this->current_cal_ != 1) {
+    this->current_calibration_number_->make_call().set_value(0).perform();
+  }
+  if (this->voltage_calibration_number_ != nullptr && this->voltage_cal_ != 1) {
+    this->voltage_calibration_number_->make_call().set_value(0).perform();
+  }
+  if (this->power_calibration_number_ != nullptr && this->power_cal_ != 1) {
+    this->power_calibration_number_->make_call().set_value(0).perform();
+  }
+  if (this->energy_calibration_number_ != nullptr && this->energy_cal_ != 1) {
+    this->energy_calibration_number_->make_call().set_value(0).perform();
+  }
+#endif
+  ESP_LOGD(TAG, "external calibration values restored to initial state");
+}
+
+void BL0940::current_calibration_callback_(float state) {
+  this->current_cal_ = this->calculate_calibration_value_(state);
+  ESP_LOGV(TAG, "update current calibration state: %f", this->current_cal_);
+  this->recalibrate_();
+}
+void BL0940::voltage_calibration_callback_(float state) {
+  this->voltage_cal_ = this->calculate_calibration_value_(state);
+  ESP_LOGV(TAG, "update voltage calibration state: %f", this->voltage_cal_);
+  this->recalibrate_();
+}
+void BL0940::power_calibration_callback_(float state) {
+  this->power_cal_ = this->calculate_calibration_value_(state);
+  ESP_LOGV(TAG, "update power calibration state: %f", this->power_cal_);
+  this->recalibrate_();
+}
+void BL0940::energy_calibration_callback_(float state) {
+  this->energy_cal_ = this->calculate_calibration_value_(state);
+  ESP_LOGV(TAG, "update energy calibration state: %f", this->energy_cal_);
+  this->recalibrate_();
+}
+
+void BL0940::recalibrate_() {
+  ESP_LOGV(TAG, "Recalibrating reference values");
+  this->voltage_reference_cal_ = this->voltage_reference_ / this->voltage_cal_;
+  this->current_reference_cal_ = this->current_reference_ / this->current_cal_;
+
+  if (this->voltage_cal_ != 1 || this->current_cal_ != 1) {
+    this->power_reference_ = this->calculate_power_reference_();
+  }
+  this->power_reference_cal_ = this->power_reference_ / this->power_cal_;
+
+  if (this->voltage_cal_ != 1 || this->current_cal_ != 1 || this->power_cal_ != 1) {
+    this->energy_reference_ = this->calculate_energy_reference_();
+  }
+  this->energy_reference_cal_ = this->energy_reference_ / this->energy_cal_;
+
+  ESP_LOGD(TAG,
+           "Recalibrated reference values:\n"
+           "Voltage: %f\n, Current: %f\n, Power: %f\n, Energy: %f\n",
+           this->voltage_reference_cal_, this->current_reference_cal_, this->power_reference_cal_,
+           this->energy_reference_cal_);
+}
+
+float BL0940::update_temp_(sensor::Sensor *sensor, uint16_le_t temperature) const {
+  auto tb = (float) temperature;
   float converted_temp = ((float) 170 / 448) * (tb / 2 - 32) - 45;
   if (sensor != nullptr) {
     if (sensor->has_state() && std::abs(converted_temp - sensor->get_state()) > max_temperature_diff_) {
@@ -87,33 +201,40 @@ float BL0940::update_temp_(sensor::Sensor *sensor, ube16_t temperature) const {
   return converted_temp;
 }
 
-void BL0940::received_package_(const DataPacket *data) const {
+void BL0940::received_package_(DataPacket *data) {
   // Bad header
   if (data->frame_header != BL0940_PACKET_HEADER) {
     ESP_LOGI(TAG, "Invalid data. Header mismatch: %d", data->frame_header);
     return;
   }
 
-  float v_rms = (float) to_uint32_t(data->v_rms) / voltage_reference_;
-  float i_rms = (float) to_uint32_t(data->i_rms) / current_reference_;
-  float watt = (float) to_int32_t(data->watt) / power_reference_;
-  uint32_t cf_cnt = to_uint32_t(data->cf_cnt);
-  float total_energy_consumption = (float) cf_cnt / energy_reference_;
+  // cf_cnt is only 24 bits, so track overflows
+  uint32_t cf_cnt = (uint24_t) data->cf_cnt;
+  cf_cnt |= this->prev_cf_cnt_ & 0xff000000;
+  if (cf_cnt < this->prev_cf_cnt_) {
+    cf_cnt += 0x1000000;
+  }
+  this->prev_cf_cnt_ = cf_cnt;
 
-  float tps1 = update_temp_(internal_temperature_sensor_, data->tps1);
-  float tps2 = update_temp_(external_temperature_sensor_, data->tps2);
+  float v_rms = (uint24_t) data->v_rms / this->voltage_reference_cal_;
+  float i_rms = (uint24_t) data->i_rms / this->current_reference_cal_;
+  float watt = (int24_t) data->watt / this->power_reference_cal_;
+  float total_energy_consumption = cf_cnt / this->energy_reference_cal_;
 
-  if (voltage_sensor_ != nullptr) {
-    voltage_sensor_->publish_state(v_rms);
+  float tps1 = update_temp_(this->internal_temperature_sensor_, data->tps1);
+  float tps2 = update_temp_(this->external_temperature_sensor_, data->tps2);
+
+  if (this->voltage_sensor_ != nullptr) {
+    this->voltage_sensor_->publish_state(v_rms);
   }
-  if (current_sensor_ != nullptr) {
-    current_sensor_->publish_state(i_rms);
+  if (this->current_sensor_ != nullptr) {
+    this->current_sensor_->publish_state(i_rms);
   }
-  if (power_sensor_ != nullptr) {
-    power_sensor_->publish_state(watt);
+  if (this->power_sensor_ != nullptr) {
+    this->power_sensor_->publish_state(watt);
   }
-  if (energy_sensor_ != nullptr) {
-    energy_sensor_->publish_state(total_energy_consumption);
+  if (this->energy_sensor_ != nullptr) {
+    this->energy_sensor_->publish_state(total_energy_consumption);
   }
 
   ESP_LOGV(TAG, "BL0940: U %fV, I %fA, P %fW, Cnt %" PRId32 ", ∫P %fkWh, T1 %f°C, T2 %f°C", v_rms, i_rms, watt, cf_cnt,
@@ -121,7 +242,27 @@ void BL0940::received_package_(const DataPacket *data) const {
 }
 
 void BL0940::dump_config() {  // NOLINT(readability-function-cognitive-complexity)
-  ESP_LOGCONFIG(TAG, "BL0940:");
+  ESP_LOGCONFIG(TAG,
+                "BL0940:\n"
+                "  LEGACY MODE: %s\n"
+                "  READ  CMD: 0x%02X\n"
+                "  WRITE CMD: 0x%02X\n"
+                "  ------------------\n"
+                "  Current reference: %f\n"
+                "  Energy reference: %f\n"
+                "  Power reference: %f\n"
+                "  Voltage reference: %f\n",
+                TRUEFALSE(this->legacy_mode_enabled_), this->read_command_, this->write_command_,
+                this->current_reference_, this->energy_reference_, this->power_reference_, this->voltage_reference_);
+#ifdef USE_NUMBER
+  ESP_LOGCONFIG(TAG,
+                "BL0940:\n"
+                "  Current calibration: %f\n"
+                "  Energy calibration: %f\n"
+                "  Power calibration: %f\n"
+                "  Voltage calibration: %f\n",
+                this->current_cal_, this->energy_cal_, this->power_cal_, this->voltage_cal_);
+#endif
   LOG_SENSOR("", "Voltage", this->voltage_sensor_);
   LOG_SENSOR("", "Current", this->current_sensor_);
   LOG_SENSOR("", "Power", this->power_sensor_);
@@ -130,9 +271,5 @@ void BL0940::dump_config() {  // NOLINT(readability-function-cognitive-complexit
   LOG_SENSOR("", "External temperature", this->external_temperature_sensor_);
 }
 
-uint32_t BL0940::to_uint32_t(ube24_t input) { return input.h << 16 | input.m << 8 | input.l; }
-
-int32_t BL0940::to_int32_t(sbe24_t input) { return input.h << 16 | input.m << 8 | input.l; }
-
 }  // namespace bl0940
 }  // namespace esphome

esphome/components/bl0940/bl0940.h

@@ -1,66 +1,48 @@
 #pragma once
 
 #include "esphome/core/component.h"
-#include "esphome/components/uart/uart.h"
+#include "esphome/core/datatypes.h"
+#include "esphome/core/defines.h"
+#ifdef USE_BUTTON
+#include "esphome/components/button/button.h"
+#endif
+#ifdef USE_NUMBER
+#include "esphome/components/number/number.h"
+#endif
 #include "esphome/components/sensor/sensor.h"
+#include "esphome/components/uart/uart.h"
 
 namespace esphome {
 namespace bl0940 {
 
-static const float BL0940_PREF = 1430;
-static const float BL0940_UREF = 33000;
-static const float BL0940_IREF = 275000;  // 2750 from tasmota. Seems to generate values 100 times too high
-
-// Measured to 297J  per click according to power consumption of 5 minutes
-// Converted to kWh (3.6MJ per kwH). Used to be 256 * 1638.4
-static const float BL0940_EREF = 3.6e6 / 297;
-
-struct ube24_t {  // NOLINT(readability-identifier-naming,altera-struct-pack-align)
-  uint8_t l;
-  uint8_t m;
-  uint8_t h;
-} __attribute__((packed));
-
-struct ube16_t {  // NOLINT(readability-identifier-naming,altera-struct-pack-align)
-  uint8_t l;
-  uint8_t h;
-} __attribute__((packed));
-
-struct sbe24_t {  // NOLINT(readability-identifier-naming,altera-struct-pack-align)
-  uint8_t l;
-  uint8_t m;
-  int8_t h;
-} __attribute__((packed));
-
 // Caveat: All these values are big endian (low - middle - high)
-
-union DataPacket {  // NOLINT(altera-struct-pack-align)
-  uint8_t raw[35];
-  struct {
-    uint8_t frame_header;  // value of 0x58 according to docs. 0x55 according to Tasmota real world tests. Reality wins.
-    ube24_t i_fast_rms;    // 0x00
-    ube24_t i_rms;         // 0x04
-    ube24_t RESERVED0;     // reserved
-    ube24_t v_rms;         // 0x06
-    ube24_t RESERVED1;     // reserved
-    sbe24_t watt;          // 0x08
-    ube24_t RESERVED2;     // reserved
-    ube24_t cf_cnt;        // 0x0A
-    ube24_t RESERVED3;     // reserved
-    ube16_t tps1;          // 0x0c
-    uint8_t RESERVED4;     // value of 0x00
-    ube16_t tps2;          // 0x0c
-    uint8_t RESERVED5;     // value of 0x00
-    uint8_t checksum;      // checksum
-  };
+struct DataPacket {
+  uint8_t frame_header;    // Packet header (0x58 in EN docs, 0x55 in CN docs and Tasmota tests)
+  uint24_le_t i_fast_rms;  // Fast RMS current
+  uint24_le_t i_rms;       // RMS current
+  uint24_t RESERVED0;      // Reserved
+  uint24_le_t v_rms;       // RMS voltage
+  uint24_t RESERVED1;      // Reserved
+  int24_le_t watt;         // Active power (can be negative for bidirectional measurement)
+  uint24_t RESERVED2;      // Reserved
+  uint24_le_t cf_cnt;      // Energy pulse count
+  uint24_t RESERVED3;      // Reserved
+  uint16_le_t tps1;        // Internal temperature sensor 1
+  uint8_t RESERVED4;       // Reserved (should be 0x00)
+  uint16_le_t tps2;        // Internal temperature sensor 2
+  uint8_t RESERVED5;       // Reserved (should be 0x00)
+  uint8_t checksum;        // Packet checksum
 } __attribute__((packed));
 
 class BL0940 : public PollingComponent, public uart::UARTDevice {
  public:
+  // Sensor setters
   void set_voltage_sensor(sensor::Sensor *voltage_sensor) { voltage_sensor_ = voltage_sensor; }
   void set_current_sensor(sensor::Sensor *current_sensor) { current_sensor_ = current_sensor; }
   void set_power_sensor(sensor::Sensor *power_sensor) { power_sensor_ = power_sensor; }
   void set_energy_sensor(sensor::Sensor *energy_sensor) { energy_sensor_ = energy_sensor; }
+
+  // Temperature sensor setters
   void set_internal_temperature_sensor(sensor::Sensor *internal_temperature_sensor) {
     internal_temperature_sensor_ = internal_temperature_sensor;
   }
@@ -68,42 +50,105 @@ class BL0940 : public PollingComponent, public uart::UARTDevice {
     external_temperature_sensor_ = external_temperature_sensor;
   }
 
-  void loop() override;
+  // Configuration setters
+  void set_legacy_mode(bool enable) { this->legacy_mode_enabled_ = enable; }
+  void set_read_command(uint8_t read_command) { this->read_command_ = read_command; }
+  void set_write_command(uint8_t write_command) { this->write_command_ = write_command; }
 
+  // Reference value setters (used for calibration and conversion)
+  void set_current_reference(float current_ref) { this->current_reference_ = current_ref; }
+  void set_energy_reference(float energy_ref) { this->energy_reference_ = energy_ref; }
+  void set_power_reference(float power_ref) { this->power_reference_ = power_ref; }
+  void set_voltage_reference(float voltage_ref) { this->voltage_reference_ = voltage_ref; }
+
+#ifdef USE_NUMBER
+  // Calibration number setters (for Home Assistant number entities)
+  void set_current_calibration_number(number::Number *num) { this->current_calibration_number_ = num; }
+  void set_voltage_calibration_number(number::Number *num) { this->voltage_calibration_number_ = num; }
+  void set_power_calibration_number(number::Number *num) { this->power_calibration_number_ = num; }
+  void set_energy_calibration_number(number::Number *num) { this->energy_calibration_number_ = num; }
+#endif
+
+#ifdef USE_BUTTON
+  // Resets all calibration values to defaults (can be triggered by a button)
+  void reset_calibration();
+#endif
+
+  // Core component methods
+  void loop() override;
   void update() override;
   void setup() override;
   void dump_config() override;
 
  protected:
-  sensor::Sensor *voltage_sensor_{nullptr};
-  sensor::Sensor *current_sensor_{nullptr};
-  // NB This may be negative as the circuits is seemingly able to measure
-  // power in both directions
-  sensor::Sensor *power_sensor_{nullptr};
-  sensor::Sensor *energy_sensor_{nullptr};
-  sensor::Sensor *internal_temperature_sensor_{nullptr};
-  sensor::Sensor *external_temperature_sensor_{nullptr};
+  // --- Sensor pointers ---
+  sensor::Sensor *voltage_sensor_{nullptr};               // Voltage sensor
+  sensor::Sensor *current_sensor_{nullptr};               // Current sensor
+  sensor::Sensor *power_sensor_{nullptr};                 // Power sensor (can be negative for bidirectional)
+  sensor::Sensor *energy_sensor_{nullptr};                // Energy sensor
+  sensor::Sensor *internal_temperature_sensor_{nullptr};  // Internal temperature sensor
+  sensor::Sensor *external_temperature_sensor_{nullptr};  // External temperature sensor
 
-  // Max difference between two measurements of the temperature. Used to avoid noise.
-  float max_temperature_diff_{0};
-  // Divide by this to turn into Watt
-  float power_reference_ = BL0940_PREF;
-  // Divide by this to turn into Volt
-  float voltage_reference_ = BL0940_UREF;
-  // Divide by this to turn into Ampere
-  float current_reference_ = BL0940_IREF;
-  // Divide by this to turn into kWh
-  float energy_reference_ = BL0940_EREF;
+#ifdef USE_NUMBER
+  // --- Calibration number entities (for dynamic calibration via HA UI) ---
+  number::Number *voltage_calibration_number_{nullptr};
+  number::Number *current_calibration_number_{nullptr};
+  number::Number *power_calibration_number_{nullptr};
+  number::Number *energy_calibration_number_{nullptr};
+#endif
 
-  float update_temp_(sensor::Sensor *sensor, ube16_t packed_temperature) const;
+  // --- Internal state ---
+  uint32_t prev_cf_cnt_ = 0;       // Previous energy pulse count (for energy calculation)
+  float max_temperature_diff_{0};  // Max allowed temperature difference between two measurements (noise filter)
 
-  static uint32_t to_uint32_t(ube24_t input);
+  // --- Reference values for conversion ---
+  float power_reference_;        // Divider for raw power to get Watts
+  float power_reference_cal_;    // Calibrated power reference
+  float voltage_reference_;      // Divider for raw voltage to get Volts
+  float voltage_reference_cal_;  // Calibrated voltage reference
+  float current_reference_;      // Divider for raw current to get Amperes
+  float current_reference_cal_;  // Calibrated current reference
+  float energy_reference_;       // Divider for raw energy to get kWh
+  float energy_reference_cal_;   // Calibrated energy reference
 
-  static int32_t to_int32_t(sbe24_t input);
+  // --- Home Assistant calibration values (multipliers, default 1) ---
+  float current_cal_{1};
+  float voltage_cal_{1};
+  float power_cal_{1};
+  float energy_cal_{1};
 
-  static bool validate_checksum(const DataPacket *data);
+  // --- Protocol commands ---
+  uint8_t read_command_;
+  uint8_t write_command_;
 
-  void received_package_(const DataPacket *data) const;
+  // --- Mode flags ---
+  bool legacy_mode_enabled_ = true;
+
+  // --- Methods ---
+  // Converts packed temperature value to float and updates the sensor
+  float update_temp_(sensor::Sensor *sensor, uint16_le_t packed_temperature) const;
+
+  // Validates the checksum of a received data packet
+  bool validate_checksum_(DataPacket *data);
+
+  // Handles a received data packet
+  void received_package_(DataPacket *data);
+
+  // Calculates reference values for calibration and conversion
+  float calculate_energy_reference_();
+  float calculate_power_reference_();
+  float calculate_calibration_value_(float state);
+
+  // Calibration update callbacks (used with number entities)
+  void current_calibration_callback_(float state);
+  void voltage_calibration_callback_(float state);
+  void power_calibration_callback_(float state);
+  void energy_calibration_callback_(float state);
+  void reset_calibration_callback_();
+
+  // Recalculates all reference values after calibration changes
+  void recalibrate_();
 };
+
 }  // namespace bl0940
 }  // namespace esphome

esphome/components/bl0940/button/__init__.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+from esphome.components import button
+import esphome.config_validation as cv
+from esphome.const import ENTITY_CATEGORY_CONFIG, ICON_RESTART
+
+from .. import CONF_BL0940_ID, bl0940_ns
+from ..sensor import BL0940
+
+CalibrationResetButton = bl0940_ns.class_(
+    "CalibrationResetButton", button.Button, cg.Component
+)
+
+CONFIG_SCHEMA = cv.All(
+    button.button_schema(
+        CalibrationResetButton,
+        entity_category=ENTITY_CATEGORY_CONFIG,
+        icon=ICON_RESTART,
+    )
+    .extend({cv.GenerateID(CONF_BL0940_ID): cv.use_id(BL0940)})
+    .extend(cv.COMPONENT_SCHEMA)
+)
+
+
+async def to_code(config):
+    var = await button.new_button(config)
+    await cg.register_component(var, config)
+    await cg.register_parented(var, config[CONF_BL0940_ID])

esphome/components/bl0940/button/calibration_reset_button.cpp

@@ -0,0 +1,20 @@
+#include "calibration_reset_button.h"
+#include "../bl0940.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace bl0940 {
+
+static const char *const TAG = "bl0940.button.calibration_reset";
+
+void CalibrationResetButton::dump_config() { LOG_BUTTON("", "Calibration Reset Button", this); }
+
+void CalibrationResetButton::press_action() {
+  ESP_LOGI(TAG, "Resetting calibration defaults...");
+  this->parent_->reset_calibration();
+}
+
+}  // namespace bl0940
+}  // namespace esphome

esphome/components/bl0940/button/calibration_reset_button.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/button/button.h"
+
+namespace esphome {
+namespace bl0940 {
+
+class BL0940;  // Forward declaration of BL0940 class
+
+class CalibrationResetButton : public button::Button, public Component, public Parented<BL0940> {
+ public:
+  void dump_config() override;
+
+  void press_action() override;
+};
+
+}  // namespace bl0940
+}  // namespace esphome

esphome/components/bl0940/number/__init__.py

@@ -0,0 +1,94 @@
+import esphome.codegen as cg
+from esphome.components import number
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_MAX_VALUE,
+    CONF_MIN_VALUE,
+    CONF_MODE,
+    CONF_RESTORE_VALUE,
+    CONF_STEP,
+    ENTITY_CATEGORY_CONFIG,
+    UNIT_PERCENT,
+)
+
+from .. import CONF_BL0940_ID, bl0940_ns
+from ..sensor import BL0940
+
+# Define calibration types
+CONF_CURRENT_CALIBRATION = "current_calibration"
+CONF_VOLTAGE_CALIBRATION = "voltage_calibration"
+CONF_POWER_CALIBRATION = "power_calibration"
+CONF_ENERGY_CALIBRATION = "energy_calibration"
+
+BL0940Number = bl0940_ns.class_("BL0940Number")
+
+CalibrationNumber = bl0940_ns.class_(
+    "CalibrationNumber", number.Number, cg.PollingComponent
+)
+
+
+def validate_min_max(config):
+    if config[CONF_MAX_VALUE] <= config[CONF_MIN_VALUE]:
+        raise cv.Invalid("max_value must be greater than min_value")
+    return config
+
+
+CALIBRATION_SCHEMA = cv.All(
+    number.number_schema(
+        CalibrationNumber,
+        entity_category=ENTITY_CATEGORY_CONFIG,
+        unit_of_measurement=UNIT_PERCENT,
+    )
+    .extend(
+        {
+            cv.Optional(CONF_MODE, default="BOX"): cv.enum(number.NUMBER_MODES),
+            cv.Optional(CONF_MAX_VALUE, default=10): cv.All(
+                cv.float_, cv.Range(max=50)
+            ),
+            cv.Optional(CONF_MIN_VALUE, default=-10): cv.All(
+                cv.float_, cv.Range(min=-50)
+            ),
+            cv.Optional(CONF_STEP, default=0.1): cv.positive_float,
+            cv.Optional(CONF_RESTORE_VALUE): cv.boolean,
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA),
+    validate_min_max,
+)
+
+# Configuration schema for BL0940 numbers
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(BL0940Number),
+        cv.GenerateID(CONF_BL0940_ID): cv.use_id(BL0940),
+        cv.Optional(CONF_CURRENT_CALIBRATION): CALIBRATION_SCHEMA,
+        cv.Optional(CONF_VOLTAGE_CALIBRATION): CALIBRATION_SCHEMA,
+        cv.Optional(CONF_POWER_CALIBRATION): CALIBRATION_SCHEMA,
+        cv.Optional(CONF_ENERGY_CALIBRATION): CALIBRATION_SCHEMA,
+    }
+)
+
+
+async def to_code(config):
+    # Get the BL0940 component instance
+    bl0940 = await cg.get_variable(config[CONF_BL0940_ID])
+
+    # Process all calibration types
+    for cal_type, setter_method in [
+        (CONF_CURRENT_CALIBRATION, "set_current_calibration_number"),
+        (CONF_VOLTAGE_CALIBRATION, "set_voltage_calibration_number"),
+        (CONF_POWER_CALIBRATION, "set_power_calibration_number"),
+        (CONF_ENERGY_CALIBRATION, "set_energy_calibration_number"),
+    ]:
+        if conf := config.get(cal_type):
+            var = await number.new_number(
+                conf,
+                min_value=conf.get(CONF_MIN_VALUE),
+                max_value=conf.get(CONF_MAX_VALUE),
+                step=conf.get(CONF_STEP),
+            )
+            await cg.register_component(var, conf)
+
+            if restore_value := config.get(CONF_RESTORE_VALUE):
+                cg.add(var.set_restore_value(restore_value))
+            cg.add(getattr(bl0940, setter_method)(var))

esphome/components/bl0940/number/calibration_number.cpp

@@ -0,0 +1,29 @@
+#include "calibration_number.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace bl0940 {
+
+static const char *const TAG = "bl0940.number";
+
+void CalibrationNumber::setup() {
+  float value = 0.0f;
+  if (this->restore_value_) {
+    this->pref_ = global_preferences->make_preference<float>(this->get_object_id_hash());
+    if (!this->pref_.load(&value)) {
+      value = 0.0f;
+    }
+  }
+  this->publish_state(value);
+}
+
+void CalibrationNumber::control(float value) {
+  this->publish_state(value);
+  if (this->restore_value_)
+    this->pref_.save(&value);
+}
+
+void CalibrationNumber::dump_config() { LOG_NUMBER("", "Calibration Number", this); }
+
+}  // namespace bl0940
+}  // namespace esphome

esphome/components/bl0940/number/calibration_number.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "esphome/components/number/number.h"
+#include "esphome/core/component.h"
+#include "esphome/core/preferences.h"
+
+namespace esphome {
+namespace bl0940 {
+
+class CalibrationNumber : public number::Number, public Component {
+ public:
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+  void set_restore_value(bool restore_value) { this->restore_value_ = restore_value; }
+
+ protected:
+  void control(float value) override;
+  bool restore_value_{true};
+
+  ESPPreferenceObject pref_;
+};
+
+}  // namespace bl0940
+}  // namespace esphome

esphome/components/bl0940/sensor.py

@@ -8,6 +8,7 @@ from esphome.const import (
     CONF_ID,
     CONF_INTERNAL_TEMPERATURE,
     CONF_POWER,
+    CONF_REFERENCE_VOLTAGE,
     CONF_VOLTAGE,
     DEVICE_CLASS_CURRENT,
     DEVICE_CLASS_ENERGY,
@@ -23,12 +24,133 @@ from esphome.const import (
     UNIT_WATT,
 )
 
+from . import bl0940_ns
+
 DEPENDENCIES = ["uart"]
 
-
-bl0940_ns = cg.esphome_ns.namespace("bl0940")
 BL0940 = bl0940_ns.class_("BL0940", cg.PollingComponent, uart.UARTDevice)
 
+CONF_LEGACY_MODE = "legacy_mode"
+
+CONF_READ_COMMAND = "read_command"
+CONF_WRITE_COMMAND = "write_command"
+
+CONF_RESISTOR_SHUNT = "resistor_shunt"
+CONF_RESISTOR_ONE = "resistor_one"
+CONF_RESISTOR_TWO = "resistor_two"
+
+CONF_CURRENT_REFERENCE = "current_reference"
+CONF_ENERGY_REFERENCE = "energy_reference"
+CONF_POWER_REFERENCE = "power_reference"
+CONF_VOLTAGE_REFERENCE = "voltage_reference"
+
+DEFAULT_BL0940_READ_COMMAND = 0x58
+DEFAULT_BL0940_WRITE_COMMAND = 0xA1
+
+# Values according to BL0940 application note:
+# https://www.belling.com.cn/media/file_object/bel_product/BL0940/guide/BL0940_APPNote_TSSOP14_V1.04_EN.pdf
+DEFAULT_BL0940_VREF = 1.218  # Vref = 1.218
+DEFAULT_BL0940_RL = 1  # RL = 1 mΩ
+DEFAULT_BL0940_R1 = 0.51  # R1 = 0.51 kΩ
+DEFAULT_BL0940_R2 = 1950  # R2 = 5 x 390 kΩ -> 1950 kΩ
+
+# ----------------------------------------------------
+# values from initial implementation
+DEFAULT_BL0940_LEGACY_READ_COMMAND = 0x50
+DEFAULT_BL0940_LEGACY_WRITE_COMMAND = 0xA0
+
+DEFAULT_BL0940_LEGACY_UREF = 33000
+DEFAULT_BL0940_LEGACY_IREF = 275000
+DEFAULT_BL0940_LEGACY_PREF = 1430
+# Measured to 297J  per click according to power consumption of 5 minutes
+# Converted to kWh (3.6MJ per kwH). Used to be 256 * 1638.4
+DEFAULT_BL0940_LEGACY_EREF = 3.6e6 / 297
+# ----------------------------------------------------
+
+
+# methods to calculate voltage and current reference values
+def calculate_voltage_reference(vref, r_one, r_two):
+    # formula: 79931 / Vref * (R1 * 1000) / (R1 + R2)
+    return 79931 / vref * (r_one * 1000) / (r_one + r_two)
+
+
+def calculate_current_reference(vref, r_shunt):
+    # formula: 324004 * RL / Vref
+    return 324004 * r_shunt / vref
+
+
+def calculate_power_reference(voltage_reference, current_reference):
+    # calculate power reference based on voltage and current reference
+    return voltage_reference * current_reference * 4046 / 324004 / 79931
+
+
+def calculate_energy_reference(power_reference):
+    # formula: power_reference * 3600000 / (1638.4 * 256)
+    return power_reference * 3600000 / (1638.4 * 256)
+
+
+def validate_legacy_mode(config):
+    # Only allow schematic calibration options if legacy_mode is False
+    if config.get(CONF_LEGACY_MODE, True):
+        forbidden = [
+            CONF_REFERENCE_VOLTAGE,
+            CONF_RESISTOR_SHUNT,
+            CONF_RESISTOR_ONE,
+            CONF_RESISTOR_TWO,
+        ]
+        for key in forbidden:
+            if key in config:
+                raise cv.Invalid(
+                    f"Option '{key}' is only allowed when legacy_mode: false"
+                )
+    return config
+
+
+def set_command_defaults(config):
+    # Set defaults for read_command and write_command based on legacy_mode
+    legacy = config.get(CONF_LEGACY_MODE, True)
+    if legacy:
+        config.setdefault(CONF_READ_COMMAND, DEFAULT_BL0940_LEGACY_READ_COMMAND)
+        config.setdefault(CONF_WRITE_COMMAND, DEFAULT_BL0940_LEGACY_WRITE_COMMAND)
+    else:
+        config.setdefault(CONF_READ_COMMAND, DEFAULT_BL0940_READ_COMMAND)
+        config.setdefault(CONF_WRITE_COMMAND, DEFAULT_BL0940_WRITE_COMMAND)
+    return config
+
+
+def set_reference_values(config):
+    # Set default reference values based on legacy_mode
+    if config.get(CONF_LEGACY_MODE, True):
+        config.setdefault(CONF_VOLTAGE_REFERENCE, DEFAULT_BL0940_LEGACY_UREF)
+        config.setdefault(CONF_CURRENT_REFERENCE, DEFAULT_BL0940_LEGACY_IREF)
+        config.setdefault(CONF_POWER_REFERENCE, DEFAULT_BL0940_LEGACY_PREF)
+        config.setdefault(CONF_ENERGY_REFERENCE, DEFAULT_BL0940_LEGACY_PREF)
+    else:
+        vref = config.get(CONF_VOLTAGE_REFERENCE, DEFAULT_BL0940_VREF)
+        r_one = config.get(CONF_RESISTOR_ONE, DEFAULT_BL0940_R1)
+        r_two = config.get(CONF_RESISTOR_TWO, DEFAULT_BL0940_R2)
+        r_shunt = config.get(CONF_RESISTOR_SHUNT, DEFAULT_BL0940_RL)
+
+        config.setdefault(
+            CONF_VOLTAGE_REFERENCE, calculate_voltage_reference(vref, r_one, r_two)
+        )
+        config.setdefault(
+            CONF_CURRENT_REFERENCE, calculate_current_reference(vref, r_shunt)
+        )
+        config.setdefault(
+            CONF_POWER_REFERENCE,
+            calculate_power_reference(
+                config.get(CONF_VOLTAGE_REFERENCE), config.get(CONF_CURRENT_REFERENCE)
+            ),
+        )
+        config.setdefault(
+            CONF_ENERGY_REFERENCE,
+            calculate_energy_reference(config.get(CONF_POWER_REFERENCE)),
+        )
+
+    return config
+
+
 CONFIG_SCHEMA = (
     cv.Schema(
         {
@@ -69,10 +191,24 @@ CONFIG_SCHEMA = (
                 device_class=DEVICE_CLASS_TEMPERATURE,
                 state_class=STATE_CLASS_MEASUREMENT,
             ),
+            cv.Optional(CONF_LEGACY_MODE, default=True): cv.boolean,
+            cv.Optional(CONF_READ_COMMAND): cv.hex_uint8_t,
+            cv.Optional(CONF_WRITE_COMMAND): cv.hex_uint8_t,
+            cv.Optional(CONF_REFERENCE_VOLTAGE): cv.float_,
+            cv.Optional(CONF_RESISTOR_SHUNT): cv.float_,
+            cv.Optional(CONF_RESISTOR_ONE): cv.float_,
+            cv.Optional(CONF_RESISTOR_TWO): cv.float_,
+            cv.Optional(CONF_CURRENT_REFERENCE): cv.float_,
+            cv.Optional(CONF_ENERGY_REFERENCE): cv.float_,
+            cv.Optional(CONF_POWER_REFERENCE): cv.float_,
+            cv.Optional(CONF_VOLTAGE_REFERENCE): cv.float_,
         }
     )
     .extend(cv.polling_component_schema("60s"))
     .extend(uart.UART_DEVICE_SCHEMA)
+    .add_extra(validate_legacy_mode)
+    .add_extra(set_command_defaults)
+    .add_extra(set_reference_values)
 )
 
 
@@ -99,3 +235,16 @@ async def to_code(config):
     if external_temperature_config := config.get(CONF_EXTERNAL_TEMPERATURE):
         sens = await sensor.new_sensor(external_temperature_config)
         cg.add(var.set_external_temperature_sensor(sens))
+
+    # enable legacy mode
+    cg.add(var.set_legacy_mode(config.get(CONF_LEGACY_MODE)))
+
+    # Set bl0940 commands after validator has determined which defaults to use if not set
+    cg.add(var.set_read_command(config.get(CONF_READ_COMMAND)))
+    cg.add(var.set_write_command(config.get(CONF_WRITE_COMMAND)))
+
+    # Set reference values after validator has set the values either from defaults or calculated
+    cg.add(var.set_current_reference(config.get(CONF_CURRENT_REFERENCE)))
+    cg.add(var.set_voltage_reference(config.get(CONF_VOLTAGE_REFERENCE)))
+    cg.add(var.set_power_reference(config.get(CONF_POWER_REFERENCE)))
+    cg.add(var.set_energy_reference(config.get(CONF_ENERGY_REFERENCE)))

esphome/components/bl0942/bl0942.cpp

@@ -149,7 +149,7 @@ void BL0942::setup() {
   this->write_reg_(BL0942_REG_USR_WRPROT, 0);
 
   if (this->read_reg_(BL0942_REG_MODE) != mode)
-    this->status_set_warning("BL0942 setup failed!");
+    this->status_set_warning(LOG_STR("BL0942 setup failed!"));
 
   this->flush();
 }

esphome/components/ble_client/output/__init__.py

@@ -27,7 +27,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-def to_code(config):
+async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
     if len(config[CONF_SERVICE_UUID]) == len(esp32_ble_tracker.bt_uuid16_format):
         cg.add(
@@ -63,6 +63,6 @@ def to_code(config):
         )
         cg.add(var.set_char_uuid128(uuid128))
     cg.add(var.set_require_response(config[CONF_REQUIRE_RESPONSE]))
-    yield output.register_output(var, config)
-    yield ble_client.register_ble_node(var, config)
-    yield cg.register_component(var, config)
+    await output.register_output(var, config)
+    await ble_client.register_ble_node(var, config)
+    await cg.register_component(var, config)

esphome/components/bluetooth_proxy/__init__.py

@@ -6,8 +6,6 @@ from esphome.components.esp32 import add_idf_sdkconfig_option
 from esphome.components.esp32_ble import BTLoggers
 import esphome.config_validation as cv
 from esphome.const import CONF_ACTIVE, CONF_ID
-from esphome.core import CORE
-from esphome.log import AnsiFore, color
 
 AUTO_LOAD = ["esp32_ble_client", "esp32_ble_tracker"]
 DEPENDENCIES = ["api", "esp32"]
@@ -48,26 +46,6 @@ def validate_connections(config):
             config
         )
 
-        # Warn about connection slot waste when using Arduino framework
-        if CORE.using_arduino and connection_slots:
-            _LOGGER.warning(
-                "Bluetooth Proxy with active connections on Arduino framework has suboptimal performance.\n"
-                "If BLE connections fail, they can waste connection slots for 10 seconds because\n"
-                "Arduino doesn't allow configuring the BLE connection timeout (fixed at 30s).\n"
-                "ESP-IDF framework allows setting it to 20s to match client timeouts.\n"
-                "\n"
-                "To switch to ESP-IDF, add this to your YAML:\n"
-                "  esp32:\n"
-                "    framework:\n"
-                "      type: esp-idf\n"
-                "\n"
-                "For detailed migration instructions, see:\n"
-                "%s",
-                color(
-                    AnsiFore.BLUE, "https://esphome.io/guides/esp32_arduino_to_idf.html"
-                ),
-            )
-
         return {
             **config,
             CONF_CONNECTIONS: [CONNECTION_SCHEMA({}) for _ in range(connection_slots)],
@@ -80,20 +58,18 @@ CONFIG_SCHEMA = cv.All(
         cv.Schema(
             {
                 cv.GenerateID(): cv.declare_id(BluetoothProxy),
-                cv.Optional(CONF_ACTIVE, default=False): cv.boolean,
-                cv.SplitDefault(CONF_CACHE_SERVICES, esp32_idf=True): cv.All(
-                    cv.only_with_esp_idf, cv.boolean
-                ),
+                cv.Optional(CONF_ACTIVE, default=True): cv.boolean,
+                cv.Optional(CONF_CACHE_SERVICES, default=True): cv.boolean,
                 cv.Optional(
                     CONF_CONNECTION_SLOTS,
                     default=DEFAULT_CONNECTION_SLOTS,
                 ): cv.All(
                     cv.positive_int,
-                    cv.Range(min=1, max=esp32_ble_tracker.max_connections()),
+                    cv.Range(min=1, max=esp32_ble_tracker.IDF_MAX_CONNECTIONS),
                 ),
                 cv.Optional(CONF_CONNECTIONS): cv.All(
                     cv.ensure_list(CONNECTION_SCHEMA),
-                    cv.Length(min=1, max=esp32_ble_tracker.max_connections()),
+                    cv.Length(min=1, max=esp32_ble_tracker.IDF_MAX_CONNECTIONS),
                 ),
             }
         )

esphome/components/bluetooth_proxy/bluetooth_connection.cpp

@@ -375,10 +375,19 @@ bool BluetoothConnection::gattc_event_handler(esp_gattc_cb_event_t event, esp_ga
 
   switch (event) {
     case ESP_GATTC_DISCONNECT_EVT: {
-      this->reset_connection_(param->disconnect.reason);
+      // Don't reset connection yet - wait for CLOSE_EVT to ensure controller has freed resources
+      // This prevents race condition where we mark slot as free before controller cleanup is complete
+      ESP_LOGD(TAG, "[%d] [%s] Disconnect, reason=0x%02x", this->connection_index_, this->address_str_.c_str(),
+               param->disconnect.reason);
+      // Send disconnection notification but don't free the slot yet
+      this->proxy_->send_device_connection(this->address_, false, 0, param->disconnect.reason);
       break;
     }
     case ESP_GATTC_CLOSE_EVT: {
+      ESP_LOGD(TAG, "[%d] [%s] Close, reason=0x%02x, freeing slot", this->connection_index_, this->address_str_.c_str(),
+               param->close.reason);
+      // Now the GATT connection is fully closed and controller resources are freed
+      // Safe to mark the connection slot as available
       this->reset_connection_(param->close.reason);
       break;
     }
@@ -505,7 +514,8 @@ esp_err_t BluetoothConnection::read_characteristic(uint16_t handle) {
   return this->check_and_log_error_("esp_ble_gattc_read_char", err);
 }
 
-esp_err_t BluetoothConnection::write_characteristic(uint16_t handle, const std::string &data, bool response) {
+esp_err_t BluetoothConnection::write_characteristic(uint16_t handle, const uint8_t *data, size_t length,
+                                                    bool response) {
   if (!this->connected()) {
     this->log_gatt_not_connected_("write", "characteristic");
     return ESP_GATT_NOT_CONNECTED;
@@ -513,8 +523,11 @@ esp_err_t BluetoothConnection::write_characteristic(uint16_t handle, const std::
   ESP_LOGV(TAG, "[%d] [%s] Writing GATT characteristic handle %d", this->connection_index_, this->address_str_.c_str(),
            handle);
 
+  // ESP-IDF's API requires a non-const uint8_t* but it doesn't modify the data
+  // The BTC layer immediately copies the data to its own buffer (see btc_gattc.c)
+  // const_cast is safe here and was previously hidden by a C-style cast
   esp_err_t err =
-      esp_ble_gattc_write_char(this->gattc_if_, this->conn_id_, handle, data.size(), (uint8_t *) data.data(),
+      esp_ble_gattc_write_char(this->gattc_if_, this->conn_id_, handle, length, const_cast<uint8_t *>(data),
                                response ? ESP_GATT_WRITE_TYPE_RSP : ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
   return this->check_and_log_error_("esp_ble_gattc_write_char", err);
 }
@@ -531,7 +544,7 @@ esp_err_t BluetoothConnection::read_descriptor(uint16_t handle) {
   return this->check_and_log_error_("esp_ble_gattc_read_char_descr", err);
 }
 
-esp_err_t BluetoothConnection::write_descriptor(uint16_t handle, const std::string &data, bool response) {
+esp_err_t BluetoothConnection::write_descriptor(uint16_t handle, const uint8_t *data, size_t length, bool response) {
   if (!this->connected()) {
     this->log_gatt_not_connected_("write", "descriptor");
     return ESP_GATT_NOT_CONNECTED;
@@ -539,8 +552,11 @@ esp_err_t BluetoothConnection::write_descriptor(uint16_t handle, const std::stri
   ESP_LOGV(TAG, "[%d] [%s] Writing GATT descriptor handle %d", this->connection_index_, this->address_str_.c_str(),
            handle);
 
+  // ESP-IDF's API requires a non-const uint8_t* but it doesn't modify the data
+  // The BTC layer immediately copies the data to its own buffer (see btc_gattc.c)
+  // const_cast is safe here and was previously hidden by a C-style cast
   esp_err_t err = esp_ble_gattc_write_char_descr(
-      this->gattc_if_, this->conn_id_, handle, data.size(), (uint8_t *) data.data(),
+      this->gattc_if_, this->conn_id_, handle, length, const_cast<uint8_t *>(data),
       response ? ESP_GATT_WRITE_TYPE_RSP : ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
   return this->check_and_log_error_("esp_ble_gattc_write_char_descr", err);
 }

esphome/components/bluetooth_proxy/bluetooth_connection.h

@@ -8,7 +8,7 @@ namespace esphome::bluetooth_proxy {
 
 class BluetoothProxy;
 
-class BluetoothConnection : public esp32_ble_client::BLEClientBase {
+class BluetoothConnection final : public esp32_ble_client::BLEClientBase {
  public:
   void dump_config() override;
   void loop() override;
@@ -18,9 +18,9 @@ class BluetoothConnection : public esp32_ble_client::BLEClientBase {
   esp32_ble_tracker::AdvertisementParserType get_advertisement_parser_type() override;
 
   esp_err_t read_characteristic(uint16_t handle);
-  esp_err_t write_characteristic(uint16_t handle, const std::string &data, bool response);
+  esp_err_t write_characteristic(uint16_t handle, const uint8_t *data, size_t length, bool response);
   esp_err_t read_descriptor(uint16_t handle);
-  esp_err_t write_descriptor(uint16_t handle, const std::string &data, bool response);
+  esp_err_t write_descriptor(uint16_t handle, const uint8_t *data, size_t length, bool response);
 
   esp_err_t notify_characteristic(uint16_t handle, bool enable);
 

esphome/components/bluetooth_proxy/bluetooth_proxy.cpp

@@ -24,6 +24,9 @@ void BluetoothProxy::setup() {
   this->connections_free_response_.limit = BLUETOOTH_PROXY_MAX_CONNECTIONS;
   this->connections_free_response_.free = BLUETOOTH_PROXY_MAX_CONNECTIONS;
 
+  // Capture the configured scan mode from YAML before any API changes
+  this->configured_scan_active_ = this->parent_->get_scan_active();
+
   this->parent_->add_scanner_state_callback([this](esp32_ble_tracker::ScannerState state) {
     if (this->api_connection_ != nullptr) {
       this->send_bluetooth_scanner_state_(state);
@@ -36,6 +39,9 @@ void BluetoothProxy::send_bluetooth_scanner_state_(esp32_ble_tracker::ScannerSta
   resp.state = static_cast<api::enums::BluetoothScannerState>(state);
   resp.mode = this->parent_->get_scan_active() ? api::enums::BluetoothScannerMode::BLUETOOTH_SCANNER_MODE_ACTIVE
                                                : api::enums::BluetoothScannerMode::BLUETOOTH_SCANNER_MODE_PASSIVE;
+  resp.configured_mode = this->configured_scan_active_
+                             ? api::enums::BluetoothScannerMode::BLUETOOTH_SCANNER_MODE_ACTIVE
+                             : api::enums::BluetoothScannerMode::BLUETOOTH_SCANNER_MODE_PASSIVE;
   this->api_connection_->send_message(resp, api::BluetoothScannerStateResponse::MESSAGE_TYPE);
 }
 
@@ -183,6 +189,12 @@ void BluetoothProxy::bluetooth_device_request(const api::BluetoothDeviceRequest
         this->send_device_connection(msg.address, false);
         return;
       }
+      if (!msg.has_address_type) {
+        ESP_LOGE(TAG, "[%d] [%s] Missing address type in connect request", connection->get_connection_index(),
+                 connection->address_str().c_str());
+        this->send_device_connection(msg.address, false);
+        return;
+      }
       if (connection->state() == espbt::ClientState::CONNECTED ||
           connection->state() == espbt::ClientState::ESTABLISHED) {
         this->log_connection_request_ignored_(connection, connection->state());
@@ -209,13 +221,9 @@ void BluetoothProxy::bluetooth_device_request(const api::BluetoothDeviceRequest
         connection->set_connection_type(espbt::ConnectionType::V3_WITHOUT_CACHE);
         this->log_connection_info_(connection, "v3 without cache");
       }
-      if (msg.has_address_type) {
-        uint64_to_bd_addr(msg.address, connection->remote_bda_);
-        connection->set_remote_addr_type(static_cast<esp_ble_addr_type_t>(msg.address_type));
-        connection->set_state(espbt::ClientState::DISCOVERED);
-      } else {
-        connection->set_state(espbt::ClientState::SEARCHING);
-      }
+      uint64_to_bd_addr(msg.address, connection->remote_bda_);
+      connection->set_remote_addr_type(static_cast<esp_ble_addr_type_t>(msg.address_type));
+      connection->set_state(espbt::ClientState::DISCOVERED);
       this->send_connections_free();
       break;
     }
@@ -297,7 +305,7 @@ void BluetoothProxy::bluetooth_gatt_write(const api::BluetoothGATTWriteRequest &
     return;
   }
 
-  auto err = connection->write_characteristic(msg.handle, msg.data, msg.response);
+  auto err = connection->write_characteristic(msg.handle, msg.data, msg.data_len, msg.response);
   if (err != ESP_OK) {
     this->send_gatt_error(msg.address, msg.handle, err);
   }
@@ -323,7 +331,7 @@ void BluetoothProxy::bluetooth_gatt_write_descriptor(const api::BluetoothGATTWri
     return;
   }
 
-  auto err = connection->write_descriptor(msg.handle, msg.data, true);
+  auto err = connection->write_descriptor(msg.handle, msg.data, msg.data_len, true);
   if (err != ESP_OK) {
     this->send_gatt_error(msg.address, msg.handle, err);
   }

esphome/components/bluetooth_proxy/bluetooth_proxy.h

@@ -50,7 +50,7 @@ enum BluetoothProxySubscriptionFlag : uint32_t {
   SUBSCRIPTION_RAW_ADVERTISEMENTS = 1 << 0,
 };
 
-class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Component {
+class BluetoothProxy final : public esp32_ble_tracker::ESPBTDeviceListener, public Component {
   friend class BluetoothConnection;  // Allow connection to update connections_free_response_
  public:
   BluetoothProxy();
@@ -130,7 +130,9 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
 
   std::string get_bluetooth_mac_address_pretty() {
     const uint8_t *mac = esp_bt_dev_get_address();
-    return str_snprintf("%02X:%02X:%02X:%02X:%02X:%02X", 17, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+    char buf[18];
+    format_mac_addr_upper(mac, buf);
+    return std::string(buf);
   }
 
  protected:
@@ -161,7 +163,8 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
   // Group 4: 1-byte types grouped together
   bool active_;
   uint8_t connection_count_{0};
-  // 2 bytes used, 2 bytes padding
+  bool configured_scan_active_{false};  // Configured scan mode from YAML
+  // 3 bytes used, 1 byte padding
 };
 
 extern BluetoothProxy *global_bluetooth_proxy;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)

esphome/components/bmi160/bmi160.cpp

@@ -203,7 +203,7 @@ void BMI160Component::dump_config() {
 i2c::ErrorCode BMI160Component::read_le_int16_(uint8_t reg, int16_t *value, uint8_t len) {
   uint8_t raw_data[len * 2];
   // read using read_register because we have little-endian data, and read_bytes_16 will swap it
-  i2c::ErrorCode err = this->read_register(reg, raw_data, len * 2, true);
+  i2c::ErrorCode err = this->read_register(reg, raw_data, len * 2);
   if (err != i2c::ERROR_OK) {
     return err;
   }

esphome/components/bmp280_base/bmp280_base.cpp

@@ -63,12 +63,12 @@ void BMP280Component::setup() {
 
   // Read the chip id twice, to work around a bug where the first read is 0.
   // https://community.st.com/t5/stm32-mcus-products/issue-with-reading-bmp280-chip-id-using-spi/td-p/691855
-  if (!this->read_byte(0xD0, &chip_id)) {
+  if (!this->bmp_read_byte(0xD0, &chip_id)) {
     this->error_code_ = COMMUNICATION_FAILED;
     this->mark_failed(ESP_LOG_MSG_COMM_FAIL);
     return;
   }
-  if (!this->read_byte(0xD0, &chip_id)) {
+  if (!this->bmp_read_byte(0xD0, &chip_id)) {
     this->error_code_ = COMMUNICATION_FAILED;
     this->mark_failed(ESP_LOG_MSG_COMM_FAIL);
     return;
@@ -80,7 +80,7 @@ void BMP280Component::setup() {
   }
 
   // Send a soft reset.
-  if (!this->write_byte(BMP280_REGISTER_RESET, BMP280_SOFT_RESET)) {
+  if (!this->bmp_write_byte(BMP280_REGISTER_RESET, BMP280_SOFT_RESET)) {
     this->mark_failed("Reset failed");
     return;
   }
@@ -89,7 +89,7 @@ void BMP280Component::setup() {
   uint8_t retry = 5;
   do {
     delay(2);
-    if (!this->read_byte(BMP280_REGISTER_STATUS, &status)) {
+    if (!this->bmp_read_byte(BMP280_REGISTER_STATUS, &status)) {
       this->mark_failed("Error reading status register");
       return;
     }
@@ -115,14 +115,14 @@ void BMP280Component::setup() {
   this->calibration_.p9 = this->read_s16_le_(0x9E);
 
   uint8_t config_register = 0;
-  if (!this->read_byte(BMP280_REGISTER_CONFIG, &config_register)) {
+  if (!this->bmp_read_byte(BMP280_REGISTER_CONFIG, &config_register)) {
     this->mark_failed("Read config");
     return;
   }
   config_register &= ~0b11111100;
   config_register |= 0b000 << 5;  // 0.5 ms standby time
   config_register |= (this->iir_filter_ & 0b111) << 2;
-  if (!this->write_byte(BMP280_REGISTER_CONFIG, config_register)) {
+  if (!this->bmp_write_byte(BMP280_REGISTER_CONFIG, config_register)) {
     this->mark_failed("Write config");
     return;
   }
@@ -159,7 +159,7 @@ void BMP280Component::update() {
   meas_value |= (this->temperature_oversampling_ & 0b111) << 5;
   meas_value |= (this->pressure_oversampling_ & 0b111) << 2;
   meas_value |= 0b01;  // Forced mode
-  if (!this->write_byte(BMP280_REGISTER_CONTROL, meas_value)) {
+  if (!this->bmp_write_byte(BMP280_REGISTER_CONTROL, meas_value)) {
     this->status_set_warning();
     return;
   }
@@ -188,9 +188,10 @@ void BMP280Component::update() {
 }
 
 float BMP280Component::read_temperature_(int32_t *t_fine) {
-  uint8_t data[3];
-  if (!this->read_bytes(BMP280_REGISTER_TEMPDATA, data, 3))
+  uint8_t data[3]{};
+  if (!this->bmp_read_bytes(BMP280_REGISTER_TEMPDATA, data, 3))
     return NAN;
+  ESP_LOGV(TAG, "Read temperature data, raw: %02X %02X %02X", data[0], data[1], data[2]);
   int32_t adc = ((data[0] & 0xFF) << 16) | ((data[1] & 0xFF) << 8) | (data[2] & 0xFF);
   adc >>= 4;
   if (adc == 0x80000) {
@@ -212,7 +213,7 @@ float BMP280Component::read_temperature_(int32_t *t_fine) {
 
 float BMP280Component::read_pressure_(int32_t t_fine) {
   uint8_t data[3];
-  if (!this->read_bytes(BMP280_REGISTER_PRESSUREDATA, data, 3))
+  if (!this->bmp_read_bytes(BMP280_REGISTER_PRESSUREDATA, data, 3))
     return NAN;
   int32_t adc = ((data[0] & 0xFF) << 16) | ((data[1] & 0xFF) << 8) | (data[2] & 0xFF);
   adc >>= 4;
@@ -258,12 +259,12 @@ void BMP280Component::set_pressure_oversampling(BMP280Oversampling pressure_over
 void BMP280Component::set_iir_filter(BMP280IIRFilter iir_filter) { this->iir_filter_ = iir_filter; }
 uint8_t BMP280Component::read_u8_(uint8_t a_register) {
   uint8_t data = 0;
-  this->read_byte(a_register, &data);
+  this->bmp_read_byte(a_register, &data);
   return data;
 }
 uint16_t BMP280Component::read_u16_le_(uint8_t a_register) {
   uint16_t data = 0;
-  this->read_byte_16(a_register, &data);
+  this->bmp_read_byte_16(a_register, &data);
   return (data >> 8) | (data << 8);
 }
 int16_t BMP280Component::read_s16_le_(uint8_t a_register) { return this->read_u16_le_(a_register); }

esphome/components/bmp280_base/bmp280_base.h

@@ -67,12 +67,12 @@ class BMP280Component : public PollingComponent {
   float get_setup_priority() const override;
   void update() override;
 
-  virtual bool read_byte(uint8_t a_register, uint8_t *data) = 0;
-  virtual bool write_byte(uint8_t a_register, uint8_t data) = 0;
-  virtual bool read_bytes(uint8_t a_register, uint8_t *data, size_t len) = 0;
-  virtual bool read_byte_16(uint8_t a_register, uint16_t *data) = 0;
-
  protected:
+  virtual bool bmp_read_byte(uint8_t a_register, uint8_t *data) = 0;
+  virtual bool bmp_write_byte(uint8_t a_register, uint8_t data) = 0;
+  virtual bool bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) = 0;
+  virtual bool bmp_read_byte_16(uint8_t a_register, uint16_t *data) = 0;
+
   /// Read the temperature value and store the calculated ambient temperature in t_fine.
   float read_temperature_(int32_t *t_fine);
   /// Read the pressure value in hPa using the provided t_fine value.

esphome/components/bmp280_i2c/bmp280_i2c.cpp

@@ -5,19 +5,6 @@
 namespace esphome {
 namespace bmp280_i2c {
 
-bool BMP280I2CComponent::read_byte(uint8_t a_register, uint8_t *data) {
-  return I2CDevice::read_byte(a_register, data);
-};
-bool BMP280I2CComponent::write_byte(uint8_t a_register, uint8_t data) {
-  return I2CDevice::write_byte(a_register, data);
-};
-bool BMP280I2CComponent::read_bytes(uint8_t a_register, uint8_t *data, size_t len) {
-  return I2CDevice::read_bytes(a_register, data, len);
-};
-bool BMP280I2CComponent::read_byte_16(uint8_t a_register, uint16_t *data) {
-  return I2CDevice::read_byte_16(a_register, data);
-};
-
 void BMP280I2CComponent::dump_config() {
   LOG_I2C_DEVICE(this);
   BMP280Component::dump_config();

esphome/components/bmp280_i2c/bmp280_i2c.h

@@ -11,10 +11,12 @@ static const char *const TAG = "bmp280_i2c.sensor";
 /// This class implements support for the BMP280 Temperature+Pressure i2c sensor.
 class BMP280I2CComponent : public esphome::bmp280_base::BMP280Component, public i2c::I2CDevice {
  public:
-  bool read_byte(uint8_t a_register, uint8_t *data) override;
-  bool write_byte(uint8_t a_register, uint8_t data) override;
-  bool read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
-  bool read_byte_16(uint8_t a_register, uint16_t *data) override;
+  bool bmp_read_byte(uint8_t a_register, uint8_t *data) override { return read_byte(a_register, data); }
+  bool bmp_write_byte(uint8_t a_register, uint8_t data) override { return write_byte(a_register, data); }
+  bool bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) override {
+    return read_bytes(a_register, data, len);
+  }
+  bool bmp_read_byte_16(uint8_t a_register, uint16_t *data) override { return read_byte_16(a_register, data); }
   void dump_config() override;
 };
 

esphome/components/bmp280_spi/bmp280_spi.cpp

@@ -28,7 +28,7 @@ void BMP280SPIComponent::setup() {
 // 0x77 is transferred, for read access, the byte 0xF7 is transferred.
 // https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp280-ds001.pdf
 
-bool BMP280SPIComponent::read_byte(uint8_t a_register, uint8_t *data) {
+bool BMP280SPIComponent::bmp_read_byte(uint8_t a_register, uint8_t *data) {
   this->enable();
   this->transfer_byte(set_bit(a_register, 7));
   *data = this->transfer_byte(0);
@@ -36,7 +36,7 @@ bool BMP280SPIComponent::read_byte(uint8_t a_register, uint8_t *data) {
   return true;
 }
 
-bool BMP280SPIComponent::write_byte(uint8_t a_register, uint8_t data) {
+bool BMP280SPIComponent::bmp_write_byte(uint8_t a_register, uint8_t data) {
   this->enable();
   this->transfer_byte(clear_bit(a_register, 7));
   this->transfer_byte(data);
@@ -44,7 +44,7 @@ bool BMP280SPIComponent::write_byte(uint8_t a_register, uint8_t data) {
   return true;
 }
 
-bool BMP280SPIComponent::read_bytes(uint8_t a_register, uint8_t *data, size_t len) {
+bool BMP280SPIComponent::bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) {
   this->enable();
   this->transfer_byte(set_bit(a_register, 7));
   this->read_array(data, len);
@@ -52,7 +52,7 @@ bool BMP280SPIComponent::read_bytes(uint8_t a_register, uint8_t *data, size_t le
   return true;
 }
 
-bool BMP280SPIComponent::read_byte_16(uint8_t a_register, uint16_t *data) {
+bool BMP280SPIComponent::bmp_read_byte_16(uint8_t a_register, uint16_t *data) {
   this->enable();
   this->transfer_byte(set_bit(a_register, 7));
   ((uint8_t *) data)[1] = this->transfer_byte(0);

esphome/components/bmp280_spi/bmp280_spi.h

@@ -10,10 +10,10 @@ class BMP280SPIComponent : public esphome::bmp280_base::BMP280Component,
                            public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
                                                  spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_200KHZ> {
   void setup() override;
-  bool read_byte(uint8_t a_register, uint8_t *data) override;
-  bool write_byte(uint8_t a_register, uint8_t data) override;
-  bool read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
-  bool read_byte_16(uint8_t a_register, uint16_t *data) override;
+  bool bmp_read_byte(uint8_t a_register, uint8_t *data) override;
+  bool bmp_write_byte(uint8_t a_register, uint8_t data) override;
+  bool bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
+  bool bmp_read_byte_16(uint8_t a_register, uint16_t *data) override;
 };
 
 }  // namespace bmp280_spi