Apply removed patch

* Add CT Clamp component

* Update lint

* Some more fixes

* Make updates to work as an analog sensor consumer

* Remove unused imports
Update lint suggestions

* Move setup_priority to header

* Remove unused calibration value

* Remove Unique ID

- Will be auto generated

* Update to use loop and not slow down main loop

Co-authored-by: Otto Winter <otto@otto-winter.com>

.clang-format

@@ -0,0 +1,137 @@
+Language:        Cpp
+AccessModifierOffset: -1
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: DontAlign
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: MultiLine
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     120
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: true
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '^<ext/.*\.h>'
+    Priority:        2
+  - Regex:           '^<.*\.h>'
+    Priority:        1
+  - Regex:           '^<.*'
+    Priority:        2
+  - Regex:           '.*'
+    Priority:        3
+IncludeIsMainRegex: '([-_](test|unittest))?$'
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 2000
+PointerAlignment: Right
+RawStringFormats:
+  - Language:        Cpp
+    Delimiters:
+      - cc
+      - CC
+      - cpp
+      - Cpp
+      - CPP
+      - 'c++'
+      - 'C++'
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+  - Language:        TextProto
+    Delimiters:
+      - pb
+      - PB
+      - proto
+      - PROTO
+    EnclosingFunctions:
+      - EqualsProto
+      - EquivToProto
+      - PARSE_PARTIAL_TEXT_PROTO
+      - PARSE_TEST_PROTO
+      - PARSE_TEXT_PROTO
+      - ParseTextOrDie
+      - ParseTextProtoOrDie
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+ReflowComments:  true
+SortIncludes:    false
+SortUsingDeclarations: false
+SpaceAfterCStyleCast: true
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles:  false
+SpacesInContainerLiterals: false
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Auto
+TabWidth:        2
+UseTab:          Never

.clang-tidy

@@ -0,0 +1,127 @@
+---
+Checks: >-
+  *,
+  -abseil-*,
+  -android-*,
+  -boost-*,
+  -bugprone-macro-parentheses,
+  -cert-dcl50-cpp,
+  -cert-err58-cpp,
+  -clang-analyzer-core.CallAndMessage,
+  -clang-analyzer-osx.*,
+  -clang-analyzer-security.*,
+  -cppcoreguidelines-avoid-goto,
+  -cppcoreguidelines-c-copy-assignment-signature,
+  -cppcoreguidelines-owning-memory,
+  -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+  -cppcoreguidelines-pro-bounds-constant-array-index,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-type-const-cast,
+  -cppcoreguidelines-pro-type-cstyle-cast,
+  -cppcoreguidelines-pro-type-member-init,
+  -cppcoreguidelines-pro-type-reinterpret-cast,
+  -cppcoreguidelines-pro-type-static-cast-downcast,
+  -cppcoreguidelines-pro-type-union-access,
+  -cppcoreguidelines-pro-type-vararg,
+  -cppcoreguidelines-special-member-functions,
+  -fuchsia-*,
+  -fuchsia-default-arguments,
+  -fuchsia-multiple-inheritance,
+  -fuchsia-overloaded-operator,
+  -fuchsia-statically-constructed-objects,
+  -google-build-using-namespace,
+  -google-explicit-constructor,
+  -google-readability-braces-around-statements,
+  -google-readability-casting,
+  -google-readability-todo,
+  -google-runtime-int,
+  -google-runtime-references,
+  -hicpp-*,
+  -llvm-header-guard,
+  -llvm-include-order,
+  -misc-unconventional-assign-operator,
+  -misc-unused-parameters,
+  -modernize-deprecated-headers,
+  -modernize-pass-by-value,
+  -modernize-pass-by-value,
+  -modernize-return-braced-init-list,
+  -modernize-use-auto,
+  -modernize-use-default-member-init,
+  -modernize-use-equals-default,
+  -mpi-*,
+  -objc-*,
+  -performance-unnecessary-value-param,
+  -readability-braces-around-statements,
+  -readability-else-after-return,
+  -readability-implicit-bool-conversion,
+  -readability-named-parameter,
+  -readability-redundant-member-init,
+  -warnings-as-errors,
+  -zircon-*
+WarningsAsErrors: '*'
+HeaderFilterRegex: '^.*/src/esphome/.*'
+AnalyzeTemporaryDtors: false
+FormatStyle:     google
+CheckOptions:
+  - key:             google-readability-braces-around-statements.ShortStatementLines
+    value:           '1'
+  - key:             google-readability-function-size.StatementThreshold
+    value:           '800'
+  - key:             google-readability-namespace-comments.ShortNamespaceLines
+    value:           '10'
+  - key:             google-readability-namespace-comments.SpacesBeforeComments
+    value:           '2'
+  - key:             modernize-loop-convert.MaxCopySize
+    value:           '16'
+  - key:             modernize-loop-convert.MinConfidence
+    value:           reasonable
+  - key:             modernize-loop-convert.NamingStyle
+    value:           CamelCase
+  - key:             modernize-pass-by-value.IncludeStyle
+    value:           llvm
+  - key:             modernize-replace-auto-ptr.IncludeStyle
+    value:           llvm
+  - key:             modernize-use-nullptr.NullMacros
+    value:           'NULL'
+  - key:             readability-identifier-naming.LocalVariableCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.StructCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.EnumCase
+    value:           'CamelCase'
+  - key:             readability-identifier-naming.EnumConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.StaticConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.StaticVariableCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.GlobalConstantCase
+    value:           'UPPER_CASE'
+  - key:             readability-identifier-naming.ParameterCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.PrivateMemberPrefix
+    value:           'NO_PRIVATE_MEMBERS_ALWAYS_USE_PROTECTED'
+  - key:             readability-identifier-naming.PrivateMethodPrefix
+    value:           'NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTED'
+  - key:             readability-identifier-naming.ClassMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMemberCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMemberSuffix
+    value:           '_'
+  - key:             readability-identifier-naming.FunctionCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ClassMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.ProtectedMethodSuffix
+    value:           '_'
+  - key:             readability-identifier-naming.VirtualMethodCase
+    value:           'lower_case'
+  - key:             readability-identifier-naming.VirtualMethodSuffix
+    value:           ''

.dockerignore

@@ -106,3 +106,5 @@ venv.bak/
 config/
 examples/
 Dockerfile
+.git/
+tests/build/

.editorconfig

@@ -0,0 +1,27 @@
+root = true
+
+# general
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+
+# python
+[*.{py}]
+indent_style = space
+indent_size = 4
+
+# C++
+[*.{cpp,h,tcc}]
+indent_style = space
+indent_size = 2
+
+# Web
+[*.{js,html,css}]
+indent_style = space
+indent_size = 2
+
+# YAML
+[*.{yaml,yml}]
+indent_style = space
+indent_size = 2

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,13 @@
+## Description:
+
+
+**Related issue (if applicable):** fixes <link to issue>
+
+**Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** esphome/esphome-docs#<esphome-docs PR number goes here>
+
+## Checklist:
+  - [ ] The code change is tested and works locally.
+  - [ ] Tests have been added to verify that the new code works (under `tests/` folder).
+
+If user exposed functionality or configuration variables are added/changed:
+  - [ ] Documentation added/updated in [esphome-docs](https://github.com/esphome/esphome-docs).

.github/issue-close-app.yml

@@ -0,0 +1,7 @@
+comment: >-
+  https://github.com/esphome/esphome/issues/430
+issueConfigs:
+- content:
+  - "OTHERWISE THE ISSUE WILL BE CLOSED AUTOMATICALLY"
+
+caseInsensitive: false

.gitignore

@@ -6,6 +6,19 @@ __pycache__/
 # C extensions
 *.so
 
+# Hide sublime text stuff
+*.sublime-project
+*.sublime-workspace
+
+# Hide some OS X stuff
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+
+# Thumbnails
+._*
+
 # Distribution / packaging
 .Python
 build/
@@ -25,12 +38,6 @@ wheels/
 *.egg
 MANIFEST
 
-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
 # Installer logs
 pip-log.txt
 pip-delete-this-directory.txt
@@ -51,36 +58,9 @@ coverage.xml
 *.mo
 *.pot
 
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
 # pyenv
 .python-version
 
-# celery beat schedule file
-celerybeat-schedule
-
-# SageMath parsed files
-*.sage.py
-
 # Environments
 .env
 .venv
@@ -90,17 +70,46 @@ ENV/
 env.bak/
 venv.bak/
 
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
 # mypy
 .mypy_cache/
 
+.pioenvs
+.piolibdeps
+.vscode
+CMakeListsPrivate.txt
+CMakeLists.txt
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/dynamic.xml
+
+# CMake
+cmake-build-debug/
+cmake-build-release/
+
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+/*.cbp
+
+.clang_complete
+.gcc-flags.json
+
 config/
+tests/build/
+tests/.esphome/
+/.temp-clang-tidy.cpp

.gitlab-ci.yml

@@ -0,0 +1,346 @@
+---
+# Based on https://gitlab.com/hassio-addons/addon-node-red/blob/master/.gitlab-ci.yml
+variables:
+  DOCKER_DRIVER: overlay2
+  DOCKER_HOST: tcp://docker:2375/
+  BASE_VERSION: '1.5.1'
+  TZ: UTC
+
+stages:
+  - lint
+  - test
+  - deploy
+
+.lint: &lint
+  image: esphome/esphome-lint:latest
+  stage: lint
+  before_script:
+    - script/setup
+  tags:
+    - docker
+
+.test: &test
+  image: esphome/esphome-lint:latest
+  stage: test
+  before_script:
+    - script/setup
+  tags:
+    - docker
+
+.docker-base: &docker-base
+  image: esphome/esphome-base-builder
+  before_script:
+    - docker info
+    - docker login -u "$DOCKER_USER" -p "$DOCKER_PASSWORD"
+  script:
+    - docker run --rm --privileged hassioaddons/qemu-user-static:latest
+    - TAG="${CI_COMMIT_TAG#v}"
+    - TAG="${TAG:-${CI_COMMIT_SHA:0:7}}"
+    - echo "Tag ${TAG}"
+
+    - |
+      if [[ "${IS_HASSIO}" == "YES" ]]; then
+        BUILD_FROM=esphome/esphome-hassio-base-${BUILD_ARCH}:${BASE_VERSION}
+        BUILD_TO=esphome/esphome-hassio-${BUILD_ARCH}
+        DOCKERFILE=docker/Dockerfile.hassio
+      else
+        BUILD_FROM=esphome/esphome-base-${BUILD_ARCH}:${BASE_VERSION}
+        if [[ "${BUILD_ARCH}" == "amd64" ]]; then
+          BUILD_TO=esphome/esphome
+        else
+          BUILD_TO=esphome/esphome-${BUILD_ARCH}
+        fi
+        DOCKERFILE=docker/Dockerfile
+      fi
+
+    - |
+      docker build \
+        --build-arg "BUILD_FROM=${BUILD_FROM}" \
+        --build-arg "BUILD_VERSION=${TAG}" \
+        --tag "${BUILD_TO}:${TAG}" \
+        --file "${DOCKERFILE}" \
+        .
+    - |
+      if [[ "${RELEASE}" = "YES" ]]; then
+        echo "Pushing to ${BUILD_TO}:${TAG}"
+        docker push "${BUILD_TO}:${TAG}"
+      fi
+    - |
+      if [[ "${LATEST}" = "YES" ]]; then
+        echo "Pushing to :latest"
+        docker tag ${BUILD_TO}:${TAG} ${BUILD_TO}:latest
+        docker push ${BUILD_TO}:latest
+      fi
+    - |
+      if [[ "${BETA}" = "YES" ]]; then
+        echo "Pushing to :beta"
+        docker tag \
+          ${BUILD_TO}:${TAG} \
+          ${BUILD_TO}:beta
+        docker push ${BUILD_TO}:beta
+      fi
+    - |
+      if [[ "${DEV}" = "YES" ]]; then
+        echo "Pushing to :dev"
+        docker tag \
+          ${BUILD_TO}:${TAG} \
+          ${BUILD_TO}:dev
+        docker push ${BUILD_TO}:dev
+      fi
+  services:
+    - docker:dind
+  tags:
+    - docker
+  stage: deploy
+
+lint-custom:
+  <<: *lint
+  script:
+    - script/ci-custom.py
+
+lint-python:
+  <<: *lint
+  script:
+    - script/lint-python
+
+lint-tidy:
+  <<: *lint
+  script:
+    - pio init --ide atom
+    - |
+      if ! patch -R -p0 -s -f --dry-run <script/.neopixelbus.patch; then
+        patch -p0 < script/.neopixelbus.patch
+      fi
+    - script/clang-tidy --all-headers --fix
+    - script/ci-suggest-changes
+
+lint-format:
+  <<: *lint
+  script:
+    - script/clang-format -i
+    - script/ci-suggest-changes
+
+test1:
+  <<: *test
+  script:
+    - esphome tests/test1.yaml compile
+
+test2:
+  <<: *test
+  script:
+    - esphome tests/test2.yaml compile
+
+test3:
+  <<: *test
+  script:
+    - esphome tests/test3.yaml compile
+
+.deploy-pypi: &deploy-pypi
+  <<: *lint
+  stage: deploy
+  script:
+    - pip install twine wheel
+    - python setup.py sdist bdist_wheel
+    - twine upload dist/*
+
+deploy-release:pypi:
+  <<: *deploy-pypi
+  only:
+    - /^v\d+\.\d+\.\d+$/
+  except:
+    - /^(?!master).+@/
+
+deploy-beta:pypi:
+  <<: *deploy-pypi
+  only:
+    - /^v\d+\.\d+\.\d+b\d+$/
+  except:
+    - /^(?!rc).+@/
+
+.latest: &latest
+  <<: *docker-base
+  only:
+    - /^v([0-9\.]+)$/
+  except:
+    - branches
+
+.beta: &beta
+  <<: *docker-base
+  only:
+    - /^v([0-9\.]+b\d+)$/
+  except:
+    - branches
+
+.dev: &dev
+  <<: *docker-base
+  only:
+    - dev
+
+aarch64-beta-docker:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: aarch64
+    IS_HASSIO: "NO"
+    RELEASE: "YES"
+aarch64-beta-hassio:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: aarch64
+    IS_HASSIO: "YES"
+    RELEASE: "YES"
+aarch64-dev-docker:
+  <<: *dev
+  variables:
+    BUILD_ARCH: aarch64
+    DEV: "YES"
+    IS_HASSIO: "NO"
+aarch64-dev-hassio:
+  <<: *dev
+  variables:
+    BUILD_ARCH: aarch64
+    DEV: "YES"
+    IS_HASSIO: "YES"
+aarch64-latest-docker:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: aarch64
+    IS_HASSIO: "NO"
+    LATEST: "YES"
+    RELEASE: "YES"
+aarch64-latest-hassio:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: aarch64
+    IS_HASSIO: "YES"
+    LATEST: "YES"
+    RELEASE: "YES"
+amd64-beta-docker:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: amd64
+    IS_HASSIO: "NO"
+    RELEASE: "YES"
+amd64-beta-hassio:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: amd64
+    IS_HASSIO: "YES"
+    RELEASE: "YES"
+amd64-dev-docker:
+  <<: *dev
+  variables:
+    BUILD_ARCH: amd64
+    DEV: "YES"
+    IS_HASSIO: "NO"
+amd64-dev-hassio:
+  <<: *dev
+  variables:
+    BUILD_ARCH: amd64
+    DEV: "YES"
+    IS_HASSIO: "YES"
+amd64-latest-docker:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: amd64
+    IS_HASSIO: "NO"
+    LATEST: "YES"
+    RELEASE: "YES"
+amd64-latest-hassio:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: amd64
+    IS_HASSIO: "YES"
+    LATEST: "YES"
+    RELEASE: "YES"
+armv7-beta-docker:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: armv7
+    IS_HASSIO: "NO"
+    RELEASE: "YES"
+armv7-beta-hassio:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: armv7
+    IS_HASSIO: "YES"
+    RELEASE: "YES"
+armv7-dev-docker:
+  <<: *dev
+  variables:
+    BUILD_ARCH: armv7
+    DEV: "YES"
+    IS_HASSIO: "NO"
+armv7-dev-hassio:
+  <<: *dev
+  variables:
+    BUILD_ARCH: armv7
+    DEV: "YES"
+    IS_HASSIO: "YES"
+armv7-latest-docker:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: armv7
+    IS_HASSIO: "NO"
+    LATEST: "YES"
+    RELEASE: "YES"
+armv7-latest-hassio:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: armv7
+    IS_HASSIO: "YES"
+    LATEST: "YES"
+    RELEASE: "YES"
+i386-beta-docker:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: i386
+    IS_HASSIO: "NO"
+    RELEASE: "YES"
+i386-beta-hassio:
+  <<: *beta
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: i386
+    IS_HASSIO: "YES"
+    RELEASE: "YES"
+i386-dev-docker:
+  <<: *dev
+  variables:
+    BUILD_ARCH: i386
+    DEV: "YES"
+    IS_HASSIO: "NO"
+i386-dev-hassio:
+  <<: *dev
+  variables:
+    BUILD_ARCH: i386
+    DEV: "YES"
+    IS_HASSIO: "YES"
+i386-latest-docker:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: i386
+    IS_HASSIO: "NO"
+    LATEST: "YES"
+    RELEASE: "YES"
+i386-latest-hassio:
+  <<: *latest
+  variables:
+    BETA: "YES"
+    BUILD_ARCH: i386
+    IS_HASSIO: "YES"
+    LATEST: "YES"
+    RELEASE: "YES"

.gitpod.yml

@@ -0,0 +1,6 @@
+ports:
+- port: 6052
+  onOpen: open-preview
+tasks:
+- before: script/setup
+  command: python -m esphome config dashboard

.travis.yml

@@ -1,10 +1,56 @@
 sudo: false
 language: python
-python:
-  - "2.7"
-install:
-  - pip install -r requirements.txt
-  - pip install flake8==3.5.0 pylint==1.8.4
-script:
- - flake8 esphomeyaml
- - pylint esphomeyaml
+install: script/setup
+cache:
+  directories:
+    - "~/.platformio"
+    - "$TRAVIS_BUILD_DIR/.piolibdeps"
+    - "$TRAVIS_BUILD_DIR/tests/build/test1/.piolibdeps"
+    - "$TRAVIS_BUILD_DIR/tests/build/test2/.piolibdeps"
+    - "$TRAVIS_BUILD_DIR/tests/build/test3/.piolibdeps"
+
+matrix:
+  fast_finish: true
+  include:
+    - python: "2.7"
+      env: TARGET=Lint2.7
+      script:
+        - script/ci-custom.py
+        - flake8 esphome
+        - pylint esphome
+    - python: "3.5.3"
+      env: TARGET=Lint3.5
+      script:
+        - script/ci-custom.py
+        - flake8 esphome
+        - pylint esphome
+    - python: "2.7"
+      env: TARGET=Test2.7
+      script:
+        - esphome tests/test1.yaml compile
+        - esphome tests/test2.yaml compile
+        - esphome tests/test3.yaml compile
+    - env: TARGET=Cpp-Lint
+      dist: trusty
+      sudo: required
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-7
+          packages:
+            - clang-tidy-7
+            - clang-format-7
+      before_script:
+        - pio init --ide atom
+        - |
+          if ! patch -R -p0 -s -f --dry-run <script/.neopixelbus.patch; then
+            patch -p0 < script/.neopixelbus.patch
+          fi
+        - clang-tidy-7 -version
+        - clang-format-7 -version
+        - clang-apply-replacements-7 -version
+      script:
+        - script/clang-tidy --all-headers -j 2 --fix
+        - script/clang-format -i -j 2
+        - script/ci-suggest-changes

CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at contact@otto-winter.com. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

CONTRIBUTING.md

@@ -0,0 +1,18 @@
+# Contributing to ESPHome
+
+This python project is responsible for reading in YAML configuration files,
+converting them to C++ code. This code is then converted to a platformio project and compiled
+with [esphome-core](https://github.com/esphome/esphome-core), the C++ framework behind the project.
+
+For a detailed guide, please see https://esphome.io/guides/contributing.html#contributing-to-esphomeyaml
+
+Things to note when contributing:
+
+ - Please test your changes :)
+ - If a new feature is added or an existing user-facing feature is changed, you should also 
+   update the [docs](https://github.com/esphome/esphome-docs). See [contributing to esphome-docs](https://esphome.io/guides/contributing.html#contributing-to-esphomedocs)
+   for more information.
+ - Please also update the tests in the `tests/` folder. You can do so by just adding a line in one of the YAML files
+   which checks if your new feature compiles correctly.
+ - Sometimes I will let pull requests linger because I'm not 100% sure about them. Please feel free to ping
+   me after some time.

Dockerfile

@@ -1,24 +0,0 @@
-FROM python:2.7
-MAINTAINER Otto Winter <contact@otto-winter.com>
-
-ENV ESPHOMEYAML_OTA_HOST_PORT=6123
-EXPOSE 6123
-VOLUME /config
-WORKDIR /usr/src/app
-
-COPY requirements.txt /usr/src/app/
-RUN pip install --no-cache-dir -r requirements.txt
-
-COPY docker/platformio.ini /usr/src/app/
-RUN platformio settings set enable_telemetry No && \
-    platformio run -e espressif32 -e espressif8266; exit 0
-
-# Fix issue with static IP on ESP32: https://github.com/espressif/arduino-esp32/issues/1081
-RUN curl https://github.com/espressif/arduino-esp32/commit/144480637a718844b8f48f4392da8d4f622f2e5e.patch | \
-    patch /root/.platformio/packages/framework-arduinoespressif32/libraries/WiFi/src/WiFiGeneric.cpp
-
-COPY . .
-RUN pip install -e .
-
-WORKDIR /config
-ENTRYPOINT ["esphomeyaml"]

LICENSE

@@ -0,0 +1,709 @@
+# ESPHome License
+
+Copyright (c) 2019 ESPHome
+
+The ESPHome License is made up of two base licenses: MIT and the GNU GENERAL PUBLIC LICENSE.
+The C++/runtime codebase of the ESPHome project (file extensions .c, .cpp, .h, .hpp, .tcc, .ino) are
+published under the GPLv3 license. The python codebase and all other parts of this codebase are
+published under the MIT license.
+
+Both MIT and GPLv3 licenses are attached to this document.
+
+## MIT License
+
+Copyright (c) 2019 ESPHome
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+## GPLv3 License
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+
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+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
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+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
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+
+  Nothing in this License shall be construed as excluding or limiting
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+
+  12. No Surrender of Others' Freedom.
+
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+
+  13. Use with the GNU Affero General Public License.
+
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+
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+
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+    (at your option) any later version.
+
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
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+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
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+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
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+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

MANIFEST.in

@@ -0,0 +1,5 @@
+include LICENSE
+include README.md
+include esphome/dashboard/templates/*.html
+recursive-include esphome/dashboard/static *.ico *.js *.css
+recursive-include esphome *.cpp *.h *.tcc

README.md

@@ -1,38 +1,9 @@
-# esphomeyaml for [esphomelib](https://github.com/OttoWinter/esphomelib)
+# ESPHome [![Build Status](https://travis-ci.org/esphome/esphome.svg?branch=master)](https://travis-ci.org/esphome/esphome) [![Discord Chat](https://img.shields.io/discord/429907082951524364.svg)](https://discord.gg/KhAMKrd) [![GitHub release](https://img.shields.io/github/release/esphome/esphome.svg)](https://GitHub.com/esphome/esphome/releases/)
 
-### Getting Started Guide: https://esphomelib.com/esphomeyaml/getting-started.html
+[![ESPHome Logo](https://esphome.io/_images/logo-text.png)](https://esphome.io/)
 
-### Available Components: https://esphomelib.com/esphomeyaml/index.html
+**Documentation:** https://esphome.io/
 
-esphomeyaml is the solution for your ESP8266/ESP32 projects with Home Assistant. It allows you to create **custom firmwares** for your microcontrollers with no programming experience required. All you need to know is the YAML configuration format which is also used by Home Assistant.
+For issues, please go to [the issue tracker](https://github.com/esphome/issues/issues).
 
-esphomeyaml will:
-
- * Read your configuration file and warn you about potential errors (like using the invalid pins.)
- * Create a custom C++ sketch file for you using esphomeyaml's powerful C++ generation engine.
- * Compile the sketch file for you using [platformio](http://platformio.org/).
- * Upload the binary to your ESP via Over the Air updates.
- * Automatically start remote logs via MQTT.
-
-And all of that with a single command 🎉:
-
-```bash
-esphomeyaml configuration.yaml run
-```
-
-## Features
-
- * **No programming experience required:** just edit YAML configuration
-    files like you're used to with Home Assistant.
- * **Flexible:** Use [esphomelib](https://github.com/OttoWinter/esphomelib)'s powerful core to create custom sensors/outputs.
- * **Fast and efficient:** Written in C++ and keeps memory consumption to a minimum.
- * **Made for Home Assistant:** Almost all Home Assistant features are supported out of the box. Including RGB lights and many more.
- * **Easy reproducible configuration:** No need to go through a long setup process for every single node. Just copy a configuration file and run a single command.
- * **Smart Over The Air Updates:** esphomeyaml has OTA updates deeply integrated into the system. It even automatically enters a recovery mode if a boot loop is detected.
- * **Powerful logging engine:** View colorful logs and debug issues remotely.
- * **Open Source**
- * For me: Makes documenting esphomelib's features a lot easier.
-
-## Special Thanks
-
-Special Thanks to the Home Assistant project. Lots of the code base of esphomeyaml is based off of Home Assistant, for example the loading and config validation code.
+For feature requests, please see [feature requests](https://github.com/esphome/feature-requests/issues).

docker/Dockerfile

@@ -0,0 +1,9 @@
+ARG BUILD_FROM=esphome/esphome-base-amd64:1.5.1
+FROM ${BUILD_FROM}
+
+COPY . .
+RUN pip2 install --no-cache-dir -e .
+
+WORKDIR /config
+ENTRYPOINT ["esphome"]
+CMD ["/config", "dashboard"]

docker/Dockerfile.hassio

@@ -0,0 +1,19 @@
+ARG BUILD_FROM
+FROM ${BUILD_FROM}
+
+# Copy root filesystem
+COPY docker/rootfs/ /
+COPY setup.py setup.cfg MANIFEST.in /opt/esphome/
+COPY esphome /opt/esphome/esphome
+
+RUN pip2 install --no-cache-dir -e /opt/esphome
+
+# Build arguments
+ARG BUILD_VERSION=dev
+
+# Labels
+LABEL \
+    io.hass.name="ESPHome" \
+    io.hass.description="Manage and program ESP8266/ESP32 microcontrollers through YAML configuration files" \
+    io.hass.type="addon" \
+    io.hass.version=${BUILD_VERSION}

docker/Dockerfile.lint

@@ -0,0 +1,18 @@
+FROM esphome/esphome-base-amd64:1.5.1
+
+RUN \
+    apt-get update \
+    && apt-get install -y --no-install-recommends \
+        clang-format-7 \
+        clang-tidy-7 \
+        patch \
+    && rm -rf \
+        /tmp/* \
+        /var/{cache,log}/* \
+        /var/lib/apt/lists/*
+
+COPY requirements_test.txt /requirements_test.txt
+RUN pip2 install -r /requirements_test.txt
+
+VOLUME ["/esphome"]
+WORKDIR /esphome

docker/Dockerfile.test

@@ -0,0 +1,21 @@
+FROM ubuntu:bionic
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        python \
+        python-pip \
+        python-setuptools \
+        python-pil \
+        git \
+    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/*rm -rf /var/lib/apt/lists/* /tmp/* && \
+    pip install --no-cache-dir platformio && \
+    platformio settings set enable_telemetry No && \
+    platformio settings set check_libraries_interval 1000000 && \
+    platformio settings set check_platformio_interval 1000000 && \
+    platformio settings set check_platforms_interval 1000000
+
+COPY docker/platformio.ini /pio/platformio.ini
+RUN platformio run -d /pio; rm -rf /pio
+
+COPY requirements.txt /requirements.txt
+
+RUN pip install --no-cache-dir -r /requirements.txt

docker/platformio.ini

@@ -1,12 +1,12 @@
 ; This file allows the docker build file to install the required platformio
 ; platforms
 
-[env:espressif32]
-platform = espressif32
-board = nodemcu-32s
-framework = arduino
-
 [env:espressif8266]
-platform = espressif8266
+platform = espressif8266@1.8.0
 board = nodemcuv2
 framework = arduino
+
+[env:espressif32]
+platform = espressif32@1.5.0
+board = nodemcu-32s
+framework = arduino

docker/rootfs/etc/cont-init.d/10-requirements.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# This files check if all user configuration requirements are met
+# ==============================================================================
+
+# Check SSL requirements, if enabled
+if bashio::config.true 'ssl'; then
+    if ! bashio::config.has_value 'certfile'; then
+        bashio::fatal 'SSL is enabled, but no certfile was specified.'
+        bashio::exit.nok
+    fi
+
+    if ! bashio::config.has_value 'keyfile'; then
+        bashio::fatal 'SSL is enabled, but no keyfile was specified'
+        bashio::exit.nok
+    fi
+
+
+    certfile="/ssl/$(bashio::config 'certfile')"
+    keyfile="/ssl/$(bashio::config 'keyfile')"
+
+    if ! bashio::fs.file_exists "${certfile}"; then
+        if ! bashio::fs.file_exists "${keyfile}"; then
+            # Both files are missing, let's print a friendlier error message
+            bashio::log.fatal 'You enabled encrypted connections using the "ssl": true option.'
+            bashio::log.fatal "However, the SSL files '${certfile}' and '${keyfile}'"
+            bashio::log.fatal "were not found. If you're using Hass.io on your local network and don't want"
+            bashio::log.fatal 'to encrypt connections to the ESPHome dashboard, you can manually disable'
+            bashio::log.fatal 'SSL by setting "ssl" to false."'
+            bashio::exit.nok
+        fi
+        bashio::log.fatal "The configured certfile '${certfile}' was not found."
+        bashio::exit.nok
+    fi
+
+    if ! bashio::fs.file_exists "/ssl/$(bashio::config 'keyfile')"; then
+        bashio::log.fatal "The configured keyfile '${keyfile}' was not found."
+        bashio::exit.nok
+    fi
+fi

docker/rootfs/etc/cont-init.d/20-nginx.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Configures NGINX for use with ESPHome
+# ==============================================================================
+
+declare certfile
+declare keyfile
+declare direct_port
+declare ingress_interface
+declare ingress_port
+
+mkdir -p /var/log/nginx
+
+direct_port=$(bashio::addon.port 6052)
+if bashio::var.has_value "${direct_port}"; then
+    if bashio::config.true 'ssl'; then
+        certfile=$(bashio::config 'certfile')
+        keyfile=$(bashio::config 'keyfile')
+
+        mv /etc/nginx/servers/direct-ssl.disabled /etc/nginx/servers/direct.conf
+        sed -i "s/%%certfile%%/${certfile}/g" /etc/nginx/servers/direct.conf
+        sed -i "s/%%keyfile%%/${keyfile}/g" /etc/nginx/servers/direct.conf
+    else
+        mv /etc/nginx/servers/direct.disabled /etc/nginx/servers/direct.conf
+    fi
+
+    sed -i "s/%%port%%/${direct_port}/g" /etc/nginx/servers/direct.conf
+fi
+
+ingress_port=$(bashio::addon.ingress_port)
+ingress_interface=$(bashio::addon.ip_address)
+sed -i "s/%%port%%/${ingress_port}/g" /etc/nginx/servers/ingress.conf
+sed -i "s/%%interface%%/${ingress_interface}/g" /etc/nginx/servers/ingress.conf

docker/rootfs/etc/cont-init.d/30-esphome.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# This files installs the user ESPHome version if specified
+# ==============================================================================
+
+declare esphome_version
+
+if bashio::config.has_value 'esphome_version'; then
+    esphome_version=$(bashio::config 'esphome_version')
+    full_url="https://github.com/esphome/esphome/archive/${esphome_version}.zip"
+    bashio::log.info "Installing esphome version '${esphome_version}' (${full_url})..."
+    pip2 install -U --no-cache-dir "${full_url}" \
+      || bashio::exit.nok "Failed installing esphome pinned version."
+fi

docker/rootfs/etc/cont-init.d/40-migrate.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# This files migrates the esphome config directory from the old path
+# ==============================================================================
+
+if [[ ! -d /config/esphome && -d /config/esphomeyaml ]]; then
+    echo "Moving config directory from /config/esphomeyaml to /config/esphome"
+    mv /config/esphomeyaml /config/esphome
+    mv /config/esphome/.esphomeyaml /config/esphome/.esphome
+fi

docker/rootfs/etc/nginx/includes/mime.types

@@ -0,0 +1,96 @@
+types {
+    text/html                                        html htm shtml;
+    text/css                                         css;
+    text/xml                                         xml;
+    image/gif                                        gif;
+    image/jpeg                                       jpeg jpg;
+    application/javascript                           js;
+    application/atom+xml                             atom;
+    application/rss+xml                              rss;
+
+    text/mathml                                      mml;
+    text/plain                                       txt;
+    text/vnd.sun.j2me.app-descriptor                 jad;
+    text/vnd.wap.wml                                 wml;
+    text/x-component                                 htc;
+
+    image/png                                        png;
+    image/svg+xml                                    svg svgz;
+    image/tiff                                       tif tiff;
+    image/vnd.wap.wbmp                               wbmp;
+    image/webp                                       webp;
+    image/x-icon                                     ico;
+    image/x-jng                                      jng;
+    image/x-ms-bmp                                   bmp;
+
+    font/woff                                        woff;
+    font/woff2                                       woff2;
+
+    application/java-archive                         jar war ear;
+    application/json                                 json;
+    application/mac-binhex40                         hqx;
+    application/msword                               doc;
+    application/pdf                                  pdf;
+    application/postscript                           ps eps ai;
+    application/rtf                                  rtf;
+    application/vnd.apple.mpegurl                    m3u8;
+    application/vnd.google-earth.kml+xml             kml;
+    application/vnd.google-earth.kmz                 kmz;
+    application/vnd.ms-excel                         xls;
+    application/vnd.ms-fontobject                    eot;
+    application/vnd.ms-powerpoint                    ppt;
+    application/vnd.oasis.opendocument.graphics      odg;
+    application/vnd.oasis.opendocument.presentation  odp;
+    application/vnd.oasis.opendocument.spreadsheet   ods;
+    application/vnd.oasis.opendocument.text          odt;
+    application/vnd.openxmlformats-officedocument.presentationml.presentation
+                                                     pptx;
+    application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
+                                                     xlsx;
+    application/vnd.openxmlformats-officedocument.wordprocessingml.document
+                                                     docx;
+    application/vnd.wap.wmlc                         wmlc;
+    application/x-7z-compressed                      7z;
+    application/x-cocoa                              cco;
+    application/x-java-archive-diff                  jardiff;
+    application/x-java-jnlp-file                     jnlp;
+    application/x-makeself                           run;
+    application/x-perl                               pl pm;
+    application/x-pilot                              prc pdb;
+    application/x-rar-compressed                     rar;
+    application/x-redhat-package-manager             rpm;
+    application/x-sea                                sea;
+    application/x-shockwave-flash                    swf;
+    application/x-stuffit                            sit;
+    application/x-tcl                                tcl tk;
+    application/x-x509-ca-cert                       der pem crt;
+    application/x-xpinstall                          xpi;
+    application/xhtml+xml                            xhtml;
+    application/xspf+xml                             xspf;
+    application/zip                                  zip;
+
+    application/octet-stream                         bin exe dll;
+    application/octet-stream                         deb;
+    application/octet-stream                         dmg;
+    application/octet-stream                         iso img;
+    application/octet-stream                         msi msp msm;
+
+    audio/midi                                       mid midi kar;
+    audio/mpeg                                       mp3;
+    audio/ogg                                        ogg;
+    audio/x-m4a                                      m4a;
+    audio/x-realaudio                                ra;
+
+    video/3gpp                                       3gpp 3gp;
+    video/mp2t                                       ts;
+    video/mp4                                        mp4;
+    video/mpeg                                       mpeg mpg;
+    video/quicktime                                  mov;
+    video/webm                                       webm;
+    video/x-flv                                      flv;
+    video/x-m4v                                      m4v;
+    video/x-mng                                      mng;
+    video/x-ms-asf                                   asx asf;
+    video/x-ms-wmv                                   wmv;
+    video/x-msvideo                                  avi;
+}

docker/rootfs/etc/nginx/includes/proxy_params.conf

@@ -0,0 +1,16 @@
+proxy_http_version 1.1;
+proxy_ignore_client_abort off;
+proxy_read_timeout 86400s;
+proxy_redirect off;
+proxy_send_timeout 86400s;
+proxy_max_temp_file_size 0;
+
+proxy_set_header Accept-Encoding "";
+proxy_set_header Connection $connection_upgrade;
+proxy_set_header Host $http_host;
+proxy_set_header Upgrade $http_upgrade;
+proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+proxy_set_header X-Forwarded-Proto $scheme;
+proxy_set_header X-NginX-Proxy true;
+proxy_set_header X-Real-IP $remote_addr;
+proxy_set_header Authorization "";

docker/rootfs/etc/nginx/includes/server_params.conf

@@ -0,0 +1,6 @@
+root /dev/null;
+server_name $hostname;
+
+add_header X-Content-Type-Options nosniff;
+add_header X-XSS-Protection "1; mode=block";
+add_header X-Robots-Tag none;

docker/rootfs/etc/nginx/includes/ssl_params.conf

@@ -0,0 +1,9 @@
+ssl_protocols TLSv1.2;
+ssl_prefer_server_ciphers on;
+ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA;
+ssl_ecdh_curve secp384r1;
+ssl_session_timeout  10m;
+ssl_session_cache shared:SSL:10m;
+ssl_session_tickets off;
+ssl_stapling on;
+ssl_stapling_verify on;

docker/rootfs/etc/nginx/nginx.conf

@@ -0,0 +1,33 @@
+daemon off;
+user root;
+pid /var/run/nginx.pid;
+worker_processes 1;
+# Hass.io addon log
+error_log /proc/1/fd/1 error;
+events {
+    worker_connections 1024;
+}
+
+http {
+    include /etc/nginx/includes/mime.types;
+    access_log stdout;
+    default_type application/octet-stream;
+    gzip on;
+    keepalive_timeout 65;
+    sendfile on;
+    server_tokens off;
+
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        ''      close;
+    }
+
+    # Use Hass.io supervisor as resolver
+    resolver 172.30.32.2;
+
+    upstream esphome {
+        server unix:/var/run/esphome.sock;
+    }
+
+    include /etc/nginx/servers/*.conf;
+}

docker/rootfs/etc/nginx/servers/direct-ssl.disabled

@@ -0,0 +1,17 @@
+server {
+    listen %%port%% default_server ssl http2;
+
+    include /etc/nginx/includes/server_params.conf;
+    include /etc/nginx/includes/proxy_params.conf;
+    include /etc/nginx/includes/ssl_params.conf;
+    # Clear Hass.io Ingress header
+    proxy_set_header X-Hassio-Ingress "";
+
+    # Redirect http requests to https on the same port.
+    # https://rageagainstshell.com/2016/11/redirect-http-to-https-on-the-same-port-in-nginx/
+    error_page 497 https://$http_host$request_uri;
+
+    location / {
+        proxy_pass http://esphome;
+    }
+}

docker/rootfs/etc/nginx/servers/direct.disabled

@@ -0,0 +1,12 @@
+server {
+    listen %%port%% default_server;
+
+    include /etc/nginx/includes/server_params.conf;
+    include /etc/nginx/includes/proxy_params.conf;
+    # Clear Hass.io Ingress header
+    proxy_set_header X-Hassio-Ingress "";
+
+    location / {
+        proxy_pass http://esphome;
+    }
+}

docker/rootfs/etc/nginx/servers/ingress.conf

@@ -0,0 +1,16 @@
+server {
+    listen %%interface%%:%%port%% default_server;
+
+    include /etc/nginx/includes/server_params.conf;
+    include /etc/nginx/includes/proxy_params.conf;
+    # Set Hass.io Ingress header
+    proxy_set_header X-Hassio-Ingress "YES";
+
+    location / {
+        # Only allow from Hass.io supervisor
+        allow   172.30.32.2;
+        deny    all;
+
+        proxy_pass http://esphome;
+    }
+}

docker/rootfs/etc/services.d/esphome/finish

@@ -0,0 +1,9 @@
+#!/usr/bin/execlineb -S0
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Take down the S6 supervision tree when ESPHome fails
+# ==============================================================================
+if -n { s6-test $# -ne 0 }
+if -n { s6-test ${1} -eq 256 }
+
+s6-svscanctl -t /var/run/s6/services

docker/rootfs/etc/services.d/esphome/run

@@ -0,0 +1,26 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Runs the ESPHome dashboard
+# ==============================================================================
+
+export ESPHOME_IS_HASSIO=true
+
+if bashio::config.true 'leave_front_door_open'; then
+    export DISABLE_HA_AUTHENTICATION=true
+fi
+
+if bashio::config.true 'streamer_mode'; then
+    export ESPHOME_STREAMER_MODE=true
+fi
+
+if bashio::config.true 'status_use_ping'; then
+    export ESPHOME_DASHBOARD_USE_PING=true
+fi
+
+if bashio::config.has_value 'relative_url'; then
+    export ESPHOME_DASHBOARD_RELATIVE_URL=$(bashio::config 'relative_url')
+fi
+
+bashio::log.info "Starting ESPHome dashboard..."
+exec esphome /config/esphome dashboard --socket /var/run/esphome.sock --hassio

docker/rootfs/etc/services.d/nginx/finish

@@ -0,0 +1,9 @@
+#!/usr/bin/execlineb -S0
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Take down the S6 supervision tree when NGINX fails
+# ==============================================================================
+if -n { s6-test $# -ne 0 }
+if -n { s6-test ${1} -eq 256 }
+
+s6-svscanctl -t /var/run/s6/services

docker/rootfs/etc/services.d/nginx/run

@@ -0,0 +1,14 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Runs the NGINX proxy
+# ==============================================================================
+
+bashio::log.info "Waiting for dashboard to come up..."
+
+while [[ ! -S /var/run/esphome.sock ]]; do
+  sleep 0.5
+done
+
+bashio::log.info "Starting NGINX..."
+exec nginx

esphome/__main__.py

@@ -0,0 +1,492 @@
+from __future__ import print_function
+
+import argparse
+import functools
+import logging
+import os
+import sys
+from datetime import datetime
+
+from esphome import const, writer, yaml_util
+import esphome.codegen as cg
+from esphome.config import iter_components, read_config, strip_default_ids
+from esphome.const import CONF_BAUD_RATE, CONF_BROKER, CONF_LOGGER, CONF_OTA, \
+    CONF_PASSWORD, CONF_PORT
+from esphome.core import CORE, EsphomeError, coroutine, coroutine_with_priority
+from esphome.helpers import color, indent
+from esphome.py_compat import IS_PY2, safe_input
+from esphome.util import run_external_command, run_external_process, safe_print
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def get_serial_ports():
+    # from https://github.com/pyserial/pyserial/blob/master/serial/tools/list_ports.py
+    from serial.tools.list_ports import comports
+    result = []
+    for port, desc, info in comports():
+        if not port:
+            continue
+        if "VID:PID" in info:
+            result.append((port, desc))
+    result.sort(key=lambda x: x[0])
+    return result
+
+
+def choose_prompt(options):
+    if not options:
+        raise ValueError
+
+    if len(options) == 1:
+        return options[0][1]
+
+    safe_print(u"Found multiple options, please choose one:")
+    for i, (desc, _) in enumerate(options):
+        safe_print(u"  [{}] {}".format(i + 1, desc))
+
+    while True:
+        opt = safe_input('(number): ')
+        if opt in options:
+            opt = options.index(opt)
+            break
+        try:
+            opt = int(opt)
+            if opt < 1 or opt > len(options):
+                raise ValueError
+            break
+        except ValueError:
+            safe_print(color('red', u"Invalid option: '{}'".format(opt)))
+    return options[opt - 1][1]
+
+
+def choose_upload_log_host(default, check_default, show_ota, show_mqtt, show_api):
+    options = []
+    for res, desc in get_serial_ports():
+        options.append((u"{} ({})".format(res, desc), res))
+    if (show_ota and 'ota' in CORE.config) or (show_api and 'api' in CORE.config):
+        options.append((u"Over The Air ({})".format(CORE.address), CORE.address))
+        if default == 'OTA':
+            return CORE.address
+    if show_mqtt and 'mqtt' in CORE.config:
+        options.append((u"MQTT ({})".format(CORE.config['mqtt'][CONF_BROKER]), 'MQTT'))
+        if default == 'OTA':
+            return 'MQTT'
+    if default is not None:
+        return default
+    if check_default is not None and check_default in [opt[1] for opt in options]:
+        return check_default
+    return choose_prompt(options)
+
+
+def get_port_type(port):
+    if port.startswith('/') or port.startswith('COM'):
+        return 'SERIAL'
+    if port == 'MQTT':
+        return 'MQTT'
+    return 'NETWORK'
+
+
+def run_miniterm(config, port):
+    import serial
+    from esphome import platformio_api
+
+    if CONF_LOGGER not in config:
+        _LOGGER.info("Logger is not enabled. Not starting UART logs.")
+        return
+    baud_rate = config['logger'][CONF_BAUD_RATE]
+    if baud_rate == 0:
+        _LOGGER.info("UART logging is disabled (baud_rate=0). Not starting UART logs.")
+    _LOGGER.info("Starting log output from %s with baud rate %s", port, baud_rate)
+
+    backtrace_state = False
+    with serial.Serial(port, baudrate=baud_rate) as ser:
+        while True:
+            try:
+                raw = ser.readline()
+            except serial.SerialException:
+                _LOGGER.error("Serial port closed!")
+                return
+            if IS_PY2:
+                line = raw.replace('\r', '').replace('\n', '')
+            else:
+                line = raw.replace(b'\r', b'').replace(b'\n', b'').decode('utf8',
+                                                                          'backslashreplace')
+            time = datetime.now().time().strftime('[%H:%M:%S]')
+            message = time + line
+            safe_print(message)
+
+            backtrace_state = platformio_api.process_stacktrace(
+                config, line, backtrace_state=backtrace_state)
+
+
+def wrap_to_code(name, comp):
+    coro = coroutine(comp.to_code)
+
+    @functools.wraps(comp.to_code)
+    @coroutine_with_priority(coro.priority)
+    def wrapped(conf):
+        cg.add(cg.LineComment(u"{}:".format(name)))
+        if comp.config_schema is not None:
+            conf_str = yaml_util.dump(conf)
+            if IS_PY2:
+                conf_str = conf_str.decode('utf-8')
+            cg.add(cg.LineComment(indent(conf_str)))
+        yield coro(conf)
+
+    return wrapped
+
+
+def write_cpp(config):
+    _LOGGER.info("Generating C++ source...")
+
+    for name, component, conf in iter_components(CORE.config):
+        if component.to_code is not None:
+            coro = wrap_to_code(name, component)
+            CORE.add_job(coro, conf)
+
+    CORE.flush_tasks()
+
+    writer.write_platformio_project()
+
+    code_s = indent(CORE.cpp_main_section)
+    writer.write_cpp(code_s)
+    return 0
+
+
+def compile_program(args, config):
+    from esphome import platformio_api
+
+    _LOGGER.info("Compiling app...")
+    return platformio_api.run_compile(config, args.verbose)
+
+
+def upload_using_esptool(config, port):
+    path = CORE.firmware_bin
+    cmd = ['esptool.py', '--before', 'default_reset', '--after', 'hard_reset',
+           '--chip', 'esp8266', '--port', port, 'write_flash', '0x0', path]
+
+    if os.environ.get('ESPHOME_USE_SUBPROCESS') is None:
+        import esptool
+        # pylint: disable=protected-access
+        return run_external_command(esptool._main, *cmd)
+
+    return run_external_process(*cmd)
+
+
+def upload_program(config, args, host):
+    # if upload is to a serial port use platformio, otherwise assume ota
+    if get_port_type(host) == 'SERIAL':
+        from esphome import platformio_api
+
+        if CORE.is_esp8266:
+            return upload_using_esptool(config, host)
+        return platformio_api.run_upload(config, args.verbose, host)
+
+    from esphome import espota2
+
+    ota_conf = config[CONF_OTA]
+    remote_port = ota_conf[CONF_PORT]
+    password = ota_conf[CONF_PASSWORD]
+    res = espota2.run_ota(host, remote_port, password, CORE.firmware_bin)
+    return res
+
+
+def show_logs(config, args, port):
+    if 'logger' not in config:
+        raise EsphomeError("Logger is not configured!")
+    if get_port_type(port) == 'SERIAL':
+        run_miniterm(config, port)
+        return 0
+    if get_port_type(port) == 'NETWORK' and 'api' in config:
+        from esphome.api.client import run_logs
+
+        return run_logs(config, port)
+    if get_port_type(port) == 'MQTT' and 'mqtt' in config:
+        from esphome import mqtt
+
+        return mqtt.show_logs(config, args.topic, args.username, args.password, args.client_id)
+
+    raise EsphomeError("No remote or local logging method configured (api/mqtt/logger)")
+
+
+def clean_mqtt(config, args):
+    from esphome import mqtt
+
+    return mqtt.clear_topic(config, args.topic, args.username, args.password, args.client_id)
+
+
+def setup_log(debug=False, quiet=False):
+    if debug:
+        log_level = logging.DEBUG
+    elif quiet:
+        log_level = logging.CRITICAL
+    else:
+        log_level = logging.INFO
+    logging.basicConfig(level=log_level)
+    fmt = "%(levelname)s %(message)s"
+    colorfmt = "%(log_color)s{}%(reset)s".format(fmt)
+    datefmt = '%H:%M:%S'
+
+    logging.getLogger('urllib3').setLevel(logging.WARNING)
+
+    try:
+        from colorlog import ColoredFormatter
+        logging.getLogger().handlers[0].setFormatter(ColoredFormatter(
+            colorfmt,
+            datefmt=datefmt,
+            reset=True,
+            log_colors={
+                'DEBUG': 'cyan',
+                'INFO': 'green',
+                'WARNING': 'yellow',
+                'ERROR': 'red',
+                'CRITICAL': 'red',
+            }
+        ))
+    except ImportError:
+        pass
+
+
+def command_wizard(args):
+    from esphome import wizard
+
+    return wizard.wizard(args.configuration)
+
+
+def command_config(args, config):
+    _LOGGER.info("Configuration is valid!")
+    if not args.verbose:
+        config = strip_default_ids(config)
+    safe_print(yaml_util.dump(config))
+    return 0
+
+
+def command_vscode(args):
+    from esphome import vscode
+
+    CORE.config_path = args.configuration
+    vscode.read_config(args)
+
+
+def command_compile(args, config):
+    exit_code = write_cpp(config)
+    if exit_code != 0:
+        return exit_code
+    if args.only_generate:
+        _LOGGER.info(u"Successfully generated source code.")
+        return 0
+    exit_code = compile_program(args, config)
+    if exit_code != 0:
+        return exit_code
+    _LOGGER.info(u"Successfully compiled program.")
+    return 0
+
+
+def command_upload(args, config):
+    port = choose_upload_log_host(default=args.upload_port, check_default=None,
+                                  show_ota=True, show_mqtt=False, show_api=False)
+    exit_code = upload_program(config, args, port)
+    if exit_code != 0:
+        return exit_code
+    _LOGGER.info(u"Successfully uploaded program.")
+    return 0
+
+
+def command_logs(args, config):
+    port = choose_upload_log_host(default=args.serial_port, check_default=None,
+                                  show_ota=False, show_mqtt=True, show_api=True)
+    return show_logs(config, args, port)
+
+
+def command_run(args, config):
+    exit_code = write_cpp(config)
+    if exit_code != 0:
+        return exit_code
+    exit_code = compile_program(args, config)
+    if exit_code != 0:
+        return exit_code
+    _LOGGER.info(u"Successfully compiled program.")
+    port = choose_upload_log_host(default=args.upload_port, check_default=None,
+                                  show_ota=True, show_mqtt=False, show_api=True)
+    exit_code = upload_program(config, args, port)
+    if exit_code != 0:
+        return exit_code
+    _LOGGER.info(u"Successfully uploaded program.")
+    if args.no_logs:
+        return 0
+    port = choose_upload_log_host(default=args.upload_port, check_default=port,
+                                  show_ota=False, show_mqtt=True, show_api=True)
+    return show_logs(config, args, port)
+
+
+def command_clean_mqtt(args, config):
+    return clean_mqtt(config, args)
+
+
+def command_mqtt_fingerprint(args, config):
+    from esphome import mqtt
+
+    return mqtt.get_fingerprint(config)
+
+
+def command_version(args):
+    safe_print(u"Version: {}".format(const.__version__))
+    return 0
+
+
+def command_clean(args, config):
+    try:
+        writer.clean_build()
+    except OSError as err:
+        _LOGGER.error("Error deleting build files: %s", err)
+        return 1
+    _LOGGER.info("Done!")
+    return 0
+
+
+def command_dashboard(args):
+    from esphome.dashboard import dashboard
+
+    return dashboard.start_web_server(args)
+
+
+PRE_CONFIG_ACTIONS = {
+    'wizard': command_wizard,
+    'version': command_version,
+    'dashboard': command_dashboard,
+    'vscode': command_vscode,
+}
+
+POST_CONFIG_ACTIONS = {
+    'config': command_config,
+    'compile': command_compile,
+    'upload': command_upload,
+    'logs': command_logs,
+    'run': command_run,
+    'clean-mqtt': command_clean_mqtt,
+    'mqtt-fingerprint': command_mqtt_fingerprint,
+    'clean': command_clean,
+}
+
+
+def parse_args(argv):
+    parser = argparse.ArgumentParser(prog='esphome')
+    parser.add_argument('-v', '--verbose', help="Enable verbose esphome logs.",
+                        action='store_true')
+    parser.add_argument('-q', '--quiet', help="Disable all esphome logs.",
+                        action='store_true')
+    parser.add_argument('--dashboard', help=argparse.SUPPRESS, action='store_true')
+    parser.add_argument('configuration', help='Your YAML configuration file.')
+
+    subparsers = parser.add_subparsers(help='Commands', dest='command')
+    subparsers.required = True
+    subparsers.add_parser('config', help='Validate the configuration and spit it out.')
+
+    parser_compile = subparsers.add_parser('compile',
+                                           help='Read the configuration and compile a program.')
+    parser_compile.add_argument('--only-generate',
+                                help="Only generate source code, do not compile.",
+                                action='store_true')
+
+    parser_upload = subparsers.add_parser('upload', help='Validate the configuration '
+                                                         'and upload the latest binary.')
+    parser_upload.add_argument('--upload-port', help="Manually specify the upload port to use. "
+                                                     "For example /dev/cu.SLAB_USBtoUART.")
+
+    parser_logs = subparsers.add_parser('logs', help='Validate the configuration '
+                                                     'and show all MQTT logs.')
+    parser_logs.add_argument('--topic', help='Manually set the topic to subscribe to.')
+    parser_logs.add_argument('--username', help='Manually set the username.')
+    parser_logs.add_argument('--password', help='Manually set the password.')
+    parser_logs.add_argument('--client-id', help='Manually set the client id.')
+    parser_logs.add_argument('--serial-port', help="Manually specify a serial port to use"
+                                                   "For example /dev/cu.SLAB_USBtoUART.")
+
+    parser_run = subparsers.add_parser('run', help='Validate the configuration, create a binary, '
+                                                   'upload it, and start MQTT logs.')
+    parser_run.add_argument('--upload-port', help="Manually specify the upload port/ip to use. "
+                                                  "For example /dev/cu.SLAB_USBtoUART.")
+    parser_run.add_argument('--no-logs', help='Disable starting MQTT logs.',
+                            action='store_true')
+    parser_run.add_argument('--topic', help='Manually set the topic to subscribe to for logs.')
+    parser_run.add_argument('--username', help='Manually set the MQTT username for logs.')
+    parser_run.add_argument('--password', help='Manually set the MQTT password for logs.')
+    parser_run.add_argument('--client-id', help='Manually set the client id for logs.')
+
+    parser_clean = subparsers.add_parser('clean-mqtt', help="Helper to clear an MQTT topic from "
+                                                            "retain messages.")
+    parser_clean.add_argument('--topic', help='Manually set the topic to subscribe to.')
+    parser_clean.add_argument('--username', help='Manually set the username.')
+    parser_clean.add_argument('--password', help='Manually set the password.')
+    parser_clean.add_argument('--client-id', help='Manually set the client id.')
+
+    subparsers.add_parser('wizard', help="A helpful setup wizard that will guide "
+                                         "you through setting up esphome.")
+
+    subparsers.add_parser('mqtt-fingerprint', help="Get the SSL fingerprint from a MQTT broker.")
+
+    subparsers.add_parser('version', help="Print the esphome version and exit.")
+
+    subparsers.add_parser('clean', help="Delete all temporary build files.")
+
+    dashboard = subparsers.add_parser('dashboard',
+                                      help="Create a simple web server for a dashboard.")
+    dashboard.add_argument("--port", help="The HTTP port to open connections on. Defaults to 6052.",
+                           type=int, default=6052)
+    dashboard.add_argument("--password", help="The optional password to require for all requests.",
+                           type=str, default='')
+    dashboard.add_argument("--open-ui", help="Open the dashboard UI in a browser.",
+                           action='store_true')
+    dashboard.add_argument("--hassio",
+                           help=argparse.SUPPRESS,
+                           action="store_true")
+    dashboard.add_argument("--socket",
+                           help="Make the dashboard serve under a unix socket", type=str)
+
+    vscode = subparsers.add_parser('vscode', help=argparse.SUPPRESS)
+    vscode.add_argument('--ace', action='store_true')
+
+    return parser.parse_args(argv[1:])
+
+
+def run_esphome(argv):
+    args = parse_args(argv)
+    CORE.dashboard = args.dashboard
+
+    setup_log(args.verbose, args.quiet)
+    if args.command in PRE_CONFIG_ACTIONS:
+        try:
+            return PRE_CONFIG_ACTIONS[args.command](args)
+        except EsphomeError as e:
+            _LOGGER.error(e)
+            return 1
+
+    CORE.config_path = args.configuration
+
+    config = read_config(args.verbose)
+    if config is None:
+        return 1
+    CORE.config = config
+
+    if args.command in POST_CONFIG_ACTIONS:
+        try:
+            return POST_CONFIG_ACTIONS[args.command](args, config)
+        except EsphomeError as e:
+            _LOGGER.error(e)
+            return 1
+    safe_print(u"Unknown command {}".format(args.command))
+    return 1
+
+
+def main():
+    try:
+        return run_esphome(sys.argv)
+    except EsphomeError as e:
+        _LOGGER.error(e)
+        return 1
+    except KeyboardInterrupt:
+        return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())

esphome/api/api.proto

@@ -0,0 +1,330 @@
+syntax = "proto3";
+
+// The Home Assistant protocol is structured as a simple
+// TCP socket with short binary messages encoded in the protocol buffers format
+// First, a message in this protocol has a specific format:
+//  * VarInt denoting the size of the message object. (type is not part of this)
+//  * VarInt denoting the type of message.
+//  * The message object encoded as a ProtoBuf message
+
+// The connection is established in 4 steps:
+//  * First, the client connects to the server and sends a "Hello Request" identifying itself
+//  * The server responds with a "Hello Response" and selects the protocol version
+//  * After receiving this message, the client attempts to authenticate itself using
+//    the password and a "Connect Request"
+//  * The server responds with a "Connect Response" and notifies of invalid password.
+// If anything in this initial process fails, the connection must immediately closed
+// by both sides and _no_ disconnection message is to be sent.
+
+// Message sent at the beginning of each connection
+// Can only be sent by the client and only at the beginning of the connection
+message HelloRequest {
+  // Description of client (like User Agent)
+  // For example "Home Assistant"
+  // Not strictly necessary to send but nice for debugging
+  // purposes.
+  string client_info = 1;
+}
+
+// Confirmation of successful connection request.
+// Can only be sent by the server and only at the beginning of the connection
+message HelloResponse {
+  // The version of the API to use. The _client_ (for example Home Assistant) needs to check
+  // for compatibility and if necessary adopt to an older API.
+  // Major is for breaking changes in the base protocol - a mismatch will lead to immediate disconnect_client_
+  // Minor is for breaking changes in individual messages - a mismatch will lead to a warning message
+  uint32 api_version_major = 1;
+  uint32 api_version_minor = 2;
+
+  // A string identifying the server (ESP); like client info this may be empty
+  // and only exists for debugging/logging purposes.
+  // For example "ESPHome v1.10.0 on ESP8266"
+  string server_info = 3;
+}
+
+// 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 {
+  // The password to log in with
+  string password = 1;
+}
+
+// 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 {
+  bool invalid_password = 1;
+}
+
+// Request to close the connection.
+// Can be sent by both the client and server
+message DisconnectRequest {
+  // Do not close the connection before the acknowledgement arrives
+}
+
+message DisconnectResponse {
+  // Empty - Both parties are required to close the connection after this
+  // message has been received.
+}
+
+message PingRequest {
+  // Empty
+}
+
+message PingResponse {
+  // Empty
+}
+
+message DeviceInfoRequest {
+  // Empty
+}
+
+message DeviceInfoResponse {
+  bool uses_password = 1;
+
+  // The name of the node, given by "App.set_name()"
+  string name = 2;
+
+  // The mac address of the device. For example "AC:BC:32:89:0E:A9"
+  string mac_address = 3;
+
+  // A string describing the ESPHome version. For example "1.10.0"
+  string esphome_core_version = 4;
+
+  // A string describing the date of compilation, this is generated by the compiler
+  // and therefore may not be in the same format all the time.
+  // If the user isn't using esphome, this will also not be set.
+  string compilation_time = 5;
+
+  // The model of the board. For example NodeMCU
+  string model = 6;
+
+  bool has_deep_sleep = 7;
+}
+
+message ListEntitiesRequest {
+  // Empty
+}
+
+message ListEntitiesBinarySensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string device_class = 5;
+  bool is_status_binary_sensor = 6;
+}
+message ListEntitiesCoverResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool is_optimistic = 5;
+}
+message ListEntitiesFanResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool supports_oscillation = 5;
+  bool supports_speed = 6;
+}
+message ListEntitiesLightResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool supports_brightness = 5;
+  bool supports_rgb = 6;
+  bool supports_white_value = 7;
+  bool supports_color_temperature = 8;
+  float min_mireds = 9;
+  float max_mireds = 10;
+  repeated string effects = 11;
+}
+message ListEntitiesSensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+  string unit_of_measurement = 6;
+  int32 accuracy_decimals = 7;
+}
+message ListEntitiesSwitchResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+  bool optimistic = 6;
+}
+message ListEntitiesTextSensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+}
+message ListEntitiesDoneResponse {
+  // Empty
+}
+
+message SubscribeStatesRequest {
+  // Empty
+}
+message BinarySensorStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+}
+message CoverStateResponse {
+  fixed32 key = 1;
+  enum CoverState {
+    OPEN = 0;
+    CLOSED = 1;
+  }
+  CoverState state = 2;
+}
+enum FanSpeed {
+  LOW = 0;
+  MEDIUM = 1;
+  HIGH = 2;
+}
+message FanStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+  bool oscillating = 3;
+  FanSpeed speed = 4;
+}
+message LightStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+  float brightness = 3;
+  float red = 4;
+  float green = 5;
+  float blue = 6;
+  float white = 7;
+  float color_temperature = 8;
+  string effect = 9;
+}
+message SensorStateResponse {
+  fixed32 key = 1;
+  float state = 2;
+}
+message SwitchStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+}
+message TextSensorStateResponse {
+  fixed32 key = 1;
+  string state = 2;
+}
+
+message CoverCommandRequest {
+  fixed32 key = 1;
+  enum CoverCommand {
+    OPEN = 0;
+    CLOSE = 1;
+    STOP = 2;
+  }
+  bool has_state = 2;
+  CoverCommand command = 3;
+}
+message FanCommandRequest {
+  fixed32 key = 1;
+  bool has_state = 2;
+  bool state = 3;
+  bool has_speed = 4;
+  FanSpeed speed = 5;
+  bool has_oscillating = 6;
+  bool oscillating = 7;
+}
+message LightCommandRequest {
+  fixed32 key = 1;
+  bool has_state = 2;
+  bool state = 3;
+  bool has_brightness = 4;
+  float brightness = 5;
+  bool has_rgb = 6;
+  float red = 7;
+  float green = 8;
+  float blue = 9;
+  bool has_white = 10;
+  float white = 11;
+  bool has_color_temperature = 12;
+  float color_temperature = 13;
+  bool has_transition_length = 14;
+  uint32 transition_length = 15;
+  bool has_flash_length = 16;
+  uint32 flash_length = 17;
+  bool has_effect = 18;
+  string effect = 19;
+}
+message SwitchCommandRequest {
+  fixed32 key = 1;
+  bool state = 2;
+}
+
+enum LogLevel {
+  NONE = 0;
+  ERROR = 1;
+  WARN = 2;
+  INFO = 3;
+  DEBUG = 4;
+  VERBOSE = 5;
+  VERY_VERBOSE = 6;
+}
+
+message SubscribeLogsRequest {
+  LogLevel level = 1;
+  bool dump_config = 2;
+}
+
+message SubscribeLogsResponse {
+  LogLevel level = 1;
+  string tag = 2;
+  string message = 3;
+  bool send_failed = 4;
+}
+
+message SubscribeServiceCallsRequest {
+
+}
+
+message ServiceCallResponse {
+  string service = 1;
+  map<string, string> data = 2;
+  map<string, string> data_template = 3;
+  map<string, string> variables = 4;
+}
+
+// 1. Client sends SubscribeHomeAssistantStatesRequest
+// 2. Server responds with zero or more SubscribeHomeAssistantStateResponse (async)
+// 3. Client sends HomeAssistantStateResponse for state changes.
+message SubscribeHomeAssistantStatesRequest {
+
+}
+
+message SubscribeHomeAssistantStateResponse {
+  string entity_id = 1;
+}
+
+message HomeAssistantStateResponse {
+  string entity_id = 1;
+  string state = 2;
+}
+
+message GetTimeRequest {
+
+}
+
+message GetTimeResponse {
+  fixed32 epoch_seconds = 1;
+}
+

esphome/api/client.py

@@ -0,0 +1,495 @@
+from datetime import datetime
+import functools
+import logging
+import socket
+import threading
+import time
+
+# pylint: disable=unused-import
+from typing import Optional  # noqa
+from google.protobuf import message  # noqa
+
+from esphome import const
+import esphome.api.api_pb2 as pb
+from esphome.const import CONF_PASSWORD, CONF_PORT
+from esphome.core import EsphomeError
+from esphome.helpers import resolve_ip_address, indent, color
+from esphome.py_compat import text_type, IS_PY2, byte_to_bytes, char_to_byte, format_bytes
+from esphome.util import safe_print
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class APIConnectionError(EsphomeError):
+    pass
+
+
+MESSAGE_TYPE_TO_PROTO = {
+    1: pb.HelloRequest,
+    2: pb.HelloResponse,
+    3: pb.ConnectRequest,
+    4: pb.ConnectResponse,
+    5: pb.DisconnectRequest,
+    6: pb.DisconnectResponse,
+    7: pb.PingRequest,
+    8: pb.PingResponse,
+    9: pb.DeviceInfoRequest,
+    10: pb.DeviceInfoResponse,
+    11: pb.ListEntitiesRequest,
+    12: pb.ListEntitiesBinarySensorResponse,
+    13: pb.ListEntitiesCoverResponse,
+    14: pb.ListEntitiesFanResponse,
+    15: pb.ListEntitiesLightResponse,
+    16: pb.ListEntitiesSensorResponse,
+    17: pb.ListEntitiesSwitchResponse,
+    18: pb.ListEntitiesTextSensorResponse,
+    19: pb.ListEntitiesDoneResponse,
+    20: pb.SubscribeStatesRequest,
+    21: pb.BinarySensorStateResponse,
+    22: pb.CoverStateResponse,
+    23: pb.FanStateResponse,
+    24: pb.LightStateResponse,
+    25: pb.SensorStateResponse,
+    26: pb.SwitchStateResponse,
+    27: pb.TextSensorStateResponse,
+    28: pb.SubscribeLogsRequest,
+    29: pb.SubscribeLogsResponse,
+    30: pb.CoverCommandRequest,
+    31: pb.FanCommandRequest,
+    32: pb.LightCommandRequest,
+    33: pb.SwitchCommandRequest,
+    34: pb.SubscribeServiceCallsRequest,
+    35: pb.ServiceCallResponse,
+    36: pb.GetTimeRequest,
+    37: pb.GetTimeResponse,
+}
+
+
+def _varuint_to_bytes(value):
+    if value <= 0x7F:
+        return byte_to_bytes(value)
+
+    ret = bytes()
+    while value:
+        temp = value & 0x7F
+        value >>= 7
+        if value:
+            ret += byte_to_bytes(temp | 0x80)
+        else:
+            ret += byte_to_bytes(temp)
+
+    return ret
+
+
+def _bytes_to_varuint(value):
+    result = 0
+    bitpos = 0
+    for c in value:
+        val = char_to_byte(c)
+        result |= (val & 0x7F) << bitpos
+        bitpos += 7
+        if (val & 0x80) == 0:
+            return result
+    return None
+
+
+# pylint: disable=too-many-instance-attributes,not-callable
+class APIClient(threading.Thread):
+    def __init__(self, address, port, password):
+        threading.Thread.__init__(self)
+        self._address = address  # type: str
+        self._port = port  # type: int
+        self._password = password  # type: Optional[str]
+        self._socket = None  # type: Optional[socket.socket]
+        self._socket_open_event = threading.Event()
+        self._socket_write_lock = threading.Lock()
+        self._connected = False
+        self._authenticated = False
+        self._message_handlers = []
+        self._keepalive = 5
+        self._ping_timer = None
+        self._refresh_ping()
+
+        self.on_disconnect = None
+        self.on_connect = None
+        self.on_login = None
+        self.auto_reconnect = False
+        self._running_event = threading.Event()
+        self._stop_event = threading.Event()
+
+    @property
+    def stopped(self):
+        return self._stop_event.is_set()
+
+    def _refresh_ping(self):
+        if self._ping_timer is not None:
+            self._ping_timer.cancel()
+            self._ping_timer = None
+
+        def func():
+            self._ping_timer = None
+
+            if self._connected:
+                try:
+                    self.ping()
+                except APIConnectionError:
+                    self._fatal_error()
+                else:
+                    self._refresh_ping()
+
+        self._ping_timer = threading.Timer(self._keepalive, func)
+        self._ping_timer.start()
+
+    def _cancel_ping(self):
+        if self._ping_timer is not None:
+            self._ping_timer.cancel()
+            self._ping_timer = None
+
+    def _close_socket(self):
+        self._cancel_ping()
+        if self._socket is not None:
+            self._socket.close()
+            self._socket = None
+        self._socket_open_event.clear()
+        self._connected = False
+        self._authenticated = False
+        self._message_handlers = []
+
+    def stop(self, force=False):
+        if self.stopped:
+            raise ValueError
+
+        if self._connected and not force:
+            try:
+                self.disconnect()
+            except APIConnectionError:
+                pass
+        self._close_socket()
+
+        self._stop_event.set()
+        if not force:
+            self.join()
+
+    def connect(self):
+        if not self._running_event.wait(0.1):
+            raise APIConnectionError("You need to call start() first!")
+
+        if self._connected:
+            raise APIConnectionError("Already connected!")
+
+        try:
+            ip = resolve_ip_address(self._address)
+        except EsphomeError as err:
+            _LOGGER.warning("Error resolving IP address of %s. Is it connected to WiFi?",
+                            self._address)
+            _LOGGER.warning("(If this error persists, please set a static IP address: "
+                            "https://esphome.io/components/wifi.html#manual-ips)")
+            raise APIConnectionError(err)
+
+        _LOGGER.info("Connecting to %s:%s (%s)", self._address, self._port, ip)
+        self._socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self._socket.settimeout(10.0)
+        self._socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+        try:
+            self._socket.connect((ip, self._port))
+        except socket.error as err:
+            self._fatal_error()
+            raise APIConnectionError("Error connecting to {}: {}".format(ip, err))
+        self._socket.settimeout(0.1)
+
+        self._socket_open_event.set()
+
+        hello = pb.HelloRequest()
+        hello.client_info = 'ESPHome v{}'.format(const.__version__)
+        try:
+            resp = self._send_message_await_response(hello, pb.HelloResponse)
+        except APIConnectionError as err:
+            self._fatal_error()
+            raise err
+        _LOGGER.debug("Successfully connected to %s ('%s' API=%s.%s)", self._address,
+                      resp.server_info, resp.api_version_major, resp.api_version_minor)
+        self._connected = True
+        if self.on_connect is not None:
+            self.on_connect()
+
+    def _check_connected(self):
+        if not self._connected:
+            self._fatal_error()
+            raise APIConnectionError("Must be connected!")
+
+    def login(self):
+        self._check_connected()
+        if self._authenticated:
+            raise APIConnectionError("Already logged in!")
+
+        connect = pb.ConnectRequest()
+        if self._password is not None:
+            connect.password = self._password
+        resp = self._send_message_await_response(connect, pb.ConnectResponse)
+        if resp.invalid_password:
+            raise APIConnectionError("Invalid password!")
+
+        self._authenticated = True
+        if self.on_login is not None:
+            self.on_login()
+
+    def _fatal_error(self):
+        was_connected = self._connected
+
+        self._close_socket()
+
+        if was_connected and self.on_disconnect is not None:
+            self.on_disconnect()
+
+    def _write(self, data):  # type: (bytes) -> None
+        if self._socket is None:
+            raise APIConnectionError("Socket closed")
+
+        _LOGGER.debug("Write: %s", format_bytes(data))
+        with self._socket_write_lock:
+            try:
+                self._socket.sendall(data)
+            except socket.error as err:
+                self._fatal_error()
+                raise APIConnectionError("Error while writing data: {}".format(err))
+
+    def _send_message(self, msg):
+        # type: (message.Message) -> None
+        for message_type, klass in MESSAGE_TYPE_TO_PROTO.items():
+            if isinstance(msg, klass):
+                break
+        else:
+            raise ValueError
+
+        encoded = msg.SerializeToString()
+        _LOGGER.debug("Sending %s:\n%s", type(msg), indent(text_type(msg)))
+        if IS_PY2:
+            req = chr(0x00)
+        else:
+            req = bytes([0])
+        req += _varuint_to_bytes(len(encoded))
+        req += _varuint_to_bytes(message_type)
+        req += encoded
+        self._write(req)
+        self._refresh_ping()
+
+    def _send_message_await_response_complex(self, send_msg, do_append, do_stop, timeout=1):
+        event = threading.Event()
+        responses = []
+
+        def on_message(resp):
+            if do_append(resp):
+                responses.append(resp)
+            if do_stop(resp):
+                event.set()
+
+        self._message_handlers.append(on_message)
+        self._send_message(send_msg)
+        ret = event.wait(timeout)
+        try:
+            self._message_handlers.remove(on_message)
+        except ValueError:
+            pass
+        if not ret:
+            raise APIConnectionError("Timeout while waiting for message response!")
+        return responses
+
+    def _send_message_await_response(self, send_msg, response_type, timeout=1):
+        def is_response(msg):
+            return isinstance(msg, response_type)
+
+        return self._send_message_await_response_complex(send_msg, is_response, is_response,
+                                                         timeout)[0]
+
+    def device_info(self):
+        self._check_connected()
+        return self._send_message_await_response(pb.DeviceInfoRequest(), pb.DeviceInfoResponse)
+
+    def ping(self):
+        self._check_connected()
+        return self._send_message_await_response(pb.PingRequest(), pb.PingResponse)
+
+    def disconnect(self):
+        self._check_connected()
+
+        try:
+            self._send_message_await_response(pb.DisconnectRequest(), pb.DisconnectResponse)
+        except APIConnectionError:
+            pass
+        self._close_socket()
+
+        if self.on_disconnect is not None:
+            self.on_disconnect()
+
+    def _check_authenticated(self):
+        if not self._authenticated:
+            raise APIConnectionError("Must login first!")
+
+    def subscribe_logs(self, on_log, log_level=None, dump_config=False):
+        self._check_authenticated()
+
+        def on_msg(msg):
+            if isinstance(msg, pb.SubscribeLogsResponse):
+                on_log(msg)
+
+        self._message_handlers.append(on_msg)
+        req = pb.SubscribeLogsRequest(dump_config=dump_config)
+        if log_level is not None:
+            req.level = log_level
+        self._send_message(req)
+
+    def _recv(self, amount):
+        ret = bytes()
+        if amount == 0:
+            return ret
+
+        while len(ret) < amount:
+            if self.stopped:
+                raise APIConnectionError("Stopped!")
+            if not self._socket_open_event.is_set():
+                raise APIConnectionError("No socket!")
+            try:
+                val = self._socket.recv(amount - len(ret))
+            except AttributeError:
+                raise APIConnectionError("Socket was closed")
+            except socket.timeout:
+                continue
+            except socket.error as err:
+                raise APIConnectionError("Error while receiving data: {}".format(err))
+            ret += val
+        return ret
+
+    def _recv_varint(self):
+        raw = bytes()
+        while not raw or char_to_byte(raw[-1]) & 0x80:
+            raw += self._recv(1)
+        return _bytes_to_varuint(raw)
+
+    def _run_once(self):
+        if not self._socket_open_event.wait(0.1):
+            return
+
+        # Preamble
+        if char_to_byte(self._recv(1)[0]) != 0x00:
+            raise APIConnectionError("Invalid preamble")
+
+        length = self._recv_varint()
+        msg_type = self._recv_varint()
+
+        raw_msg = self._recv(length)
+        if msg_type not in MESSAGE_TYPE_TO_PROTO:
+            _LOGGER.debug("Skipping message type %s", msg_type)
+            return
+
+        msg = MESSAGE_TYPE_TO_PROTO[msg_type]()
+        msg.ParseFromString(raw_msg)
+        _LOGGER.debug("Got message: %s:\n%s", type(msg), indent(str(msg)))
+        for msg_handler in self._message_handlers[:]:
+            msg_handler(msg)
+        self._handle_internal_messages(msg)
+        self._refresh_ping()
+
+    def run(self):
+        self._running_event.set()
+        while not self.stopped:
+            try:
+                self._run_once()
+            except APIConnectionError as err:
+                if self.stopped:
+                    break
+                if self._connected:
+                    _LOGGER.error("Error while reading incoming messages: %s", err)
+                    self._fatal_error()
+        self._running_event.clear()
+
+    def _handle_internal_messages(self, msg):
+        if isinstance(msg, pb.DisconnectRequest):
+            self._send_message(pb.DisconnectResponse())
+            if self._socket is not None:
+                self._socket.close()
+                self._socket = None
+            self._connected = False
+            if self.on_disconnect is not None:
+                self.on_disconnect()
+        elif isinstance(msg, pb.PingRequest):
+            self._send_message(pb.PingResponse())
+        elif isinstance(msg, pb.GetTimeRequest):
+            resp = pb.GetTimeResponse()
+            resp.epoch_seconds = int(time.time())
+            self._send_message(resp)
+
+
+def run_logs(config, address):
+    conf = config['api']
+    port = conf[CONF_PORT]
+    password = conf[CONF_PASSWORD]
+    _LOGGER.info("Starting log output from %s using esphome API", address)
+
+    cli = APIClient(address, port, password)
+    stopping = False
+    retry_timer = []
+
+    has_connects = []
+
+    def try_connect(tries=0, is_disconnect=True):
+        if stopping:
+            return
+
+        if is_disconnect:
+            _LOGGER.warning(u"Disconnected from API.")
+
+        while retry_timer:
+            retry_timer.pop(0).cancel()
+
+        error = None
+        try:
+            cli.connect()
+            cli.login()
+        except APIConnectionError as err:  # noqa
+            error = err
+
+        if error is None:
+            _LOGGER.info("Successfully connected to %s", address)
+            return
+
+        wait_time = min(2**tries, 300)
+        if not has_connects:
+            _LOGGER.warning(u"Initial connection failed. The ESP might not be connected "
+                            u"to WiFi yet (%s). Re-Trying in %s seconds",
+                            error, wait_time)
+        else:
+            _LOGGER.warning(u"Couldn't connect to API (%s). Trying to reconnect in %s seconds",
+                            error, wait_time)
+        timer = threading.Timer(wait_time, functools.partial(try_connect, tries + 1, is_disconnect))
+        timer.start()
+        retry_timer.append(timer)
+
+    def on_log(msg):
+        time_ = datetime.now().time().strftime(u'[%H:%M:%S]')
+        text = msg.message
+        if msg.send_failed:
+            text = color('white', '(Message skipped because it was too big to fit in '
+                                  'TCP buffer - This is only cosmetic)')
+        safe_print(time_ + text)
+
+    def on_login():
+        try:
+            cli.subscribe_logs(on_log, dump_config=not has_connects)
+            has_connects.append(True)
+        except APIConnectionError:
+            cli.disconnect()
+
+    cli.on_disconnect = try_connect
+    cli.on_login = on_login
+    cli.start()
+
+    try:
+        try_connect(is_disconnect=False)
+        while True:
+            time.sleep(1)
+    except KeyboardInterrupt:
+        stopping = True
+        cli.stop(True)
+        while retry_timer:
+            retry_timer.pop(0).cancel()
+    return 0

esphome/automation.py

@@ -0,0 +1,266 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_AUTOMATION_ID, CONF_CONDITION, CONF_ELSE, CONF_ID, CONF_THEN, \
+    CONF_TRIGGER_ID, CONF_TYPE_ID, CONF_TIME
+from esphome.core import coroutine
+from esphome.util import Registry
+
+
+def maybe_simple_id(*validators):
+    validator = cv.All(*validators)
+
+    def validate(value):
+        if isinstance(value, dict):
+            return validator(value)
+        with cv.remove_prepend_path([CONF_ID]):
+            return validator({CONF_ID: value})
+
+    return validate
+
+
+def register_action(name, action_type, schema):
+    return ACTION_REGISTRY.register(name, action_type, schema)
+
+
+def register_condition(name, condition_type, schema):
+    return CONDITION_REGISTRY.register(name, condition_type, schema)
+
+
+Action = cg.esphome_ns.class_('Action')
+Trigger = cg.esphome_ns.class_('Trigger')
+ACTION_REGISTRY = Registry()
+Condition = cg.esphome_ns.class_('Condition')
+CONDITION_REGISTRY = Registry()
+validate_action = cv.validate_registry_entry('action', ACTION_REGISTRY)
+validate_action_list = cv.validate_registry('action', ACTION_REGISTRY)
+validate_condition = cv.validate_registry_entry('condition', CONDITION_REGISTRY)
+validate_condition_list = cv.validate_registry('condition', CONDITION_REGISTRY)
+
+
+def validate_potentially_and_condition(value):
+    if isinstance(value, list):
+        with cv.remove_prepend_path(['and']):
+            return validate_condition({
+                'and': value
+            })
+    return validate_condition(value)
+
+
+DelayAction = cg.esphome_ns.class_('DelayAction', Action, cg.Component)
+LambdaAction = cg.esphome_ns.class_('LambdaAction', Action)
+IfAction = cg.esphome_ns.class_('IfAction', Action)
+WhileAction = cg.esphome_ns.class_('WhileAction', Action)
+WaitUntilAction = cg.esphome_ns.class_('WaitUntilAction', Action, cg.Component)
+UpdateComponentAction = cg.esphome_ns.class_('UpdateComponentAction', Action)
+Automation = cg.esphome_ns.class_('Automation')
+
+LambdaCondition = cg.esphome_ns.class_('LambdaCondition', Condition)
+ForCondition = cg.esphome_ns.class_('ForCondition', Condition)
+
+
+def validate_automation(extra_schema=None, extra_validators=None, single=False):
+    if extra_schema is None:
+        extra_schema = {}
+    if isinstance(extra_schema, cv.Schema):
+        extra_schema = extra_schema.schema
+    schema = AUTOMATION_SCHEMA.extend(extra_schema)
+
+    def validator_(value):
+        if isinstance(value, list):
+            # List of items, there are two possible options here, either a sequence of
+            # actions (no then:) or a list of automations.
+            try:
+                # First try as a sequence of actions
+                # If that succeeds, return immediately
+                with cv.remove_prepend_path([CONF_THEN]):
+                    return [schema({CONF_THEN: value})]
+            except cv.Invalid as err:
+                # Next try as a sequence of automations
+                try:
+                    return cv.Schema([schema])(value)
+                except cv.Invalid as err2:
+                    if u'extra keys not allowed' in str(err2) and len(err2.path) == 2:
+                        raise err
+                    if u'Unable to find action' in str(err):
+                        raise err2
+                    raise cv.MultipleInvalid([err, err2])
+        elif isinstance(value, dict):
+            if CONF_THEN in value:
+                return [schema(value)]
+            with cv.remove_prepend_path([CONF_THEN]):
+                return [schema({CONF_THEN: value})]
+        # This should only happen with invalid configs, but let's have a nice error message.
+        return [schema(value)]
+
+    def validator(value):
+        value = validator_(value)
+        if extra_validators is not None:
+            value = cv.Schema([extra_validators])(value)
+        if single:
+            if len(value) != 1:
+                raise cv.Invalid("Cannot have more than 1 automation for templates")
+            return value[0]
+        return value
+
+    return validator
+
+
+AUTOMATION_SCHEMA = cv.Schema({
+    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(Trigger),
+    cv.GenerateID(CONF_AUTOMATION_ID): cv.declare_id(Automation),
+    cv.Required(CONF_THEN): validate_action_list,
+})
+
+AndCondition = cg.esphome_ns.class_('AndCondition', Condition)
+OrCondition = cg.esphome_ns.class_('OrCondition', Condition)
+NotCondition = cg.esphome_ns.class_('NotCondition', Condition)
+
+
+@register_condition('and', AndCondition, validate_condition_list)
+def and_condition_to_code(config, condition_id, template_arg, args):
+    conditions = yield build_condition_list(config, template_arg, args)
+    yield cg.new_Pvariable(condition_id, template_arg, conditions)
+
+
+@register_condition('or', OrCondition, validate_condition_list)
+def or_condition_to_code(config, condition_id, template_arg, args):
+    conditions = yield build_condition_list(config, template_arg, args)
+    yield cg.new_Pvariable(condition_id, template_arg, conditions)
+
+
+@register_condition('not', NotCondition, validate_potentially_and_condition)
+def not_condition_to_code(config, condition_id, template_arg, args):
+    condition = yield build_condition(config, template_arg, args)
+    yield cg.new_Pvariable(condition_id, template_arg, condition)
+
+
+@register_condition('lambda', LambdaCondition, cv.lambda_)
+def lambda_condition_to_code(config, condition_id, template_arg, args):
+    lambda_ = yield cg.process_lambda(config, args, return_type=bool)
+    yield cg.new_Pvariable(condition_id, template_arg, lambda_)
+
+
+@register_condition('for', ForCondition, cv.Schema({
+    cv.Required(CONF_TIME): cv.templatable(cv.positive_time_period_milliseconds),
+    cv.Required(CONF_CONDITION): validate_potentially_and_condition,
+}).extend(cv.COMPONENT_SCHEMA))
+def for_condition_to_code(config, condition_id, template_arg, args):
+    condition = yield build_condition(config[CONF_CONDITION], cg.TemplateArguments(), [])
+    var = cg.new_Pvariable(condition_id, template_arg, condition)
+    yield cg.register_component(var, config)
+    templ = yield cg.templatable(config[CONF_TIME], args, cg.uint32)
+    cg.add(var.set_time(templ))
+    yield var
+
+
+@register_action('delay', DelayAction, cv.templatable(cv.positive_time_period_milliseconds))
+def delay_action_to_code(config, action_id, template_arg, args):
+    var = cg.new_Pvariable(action_id, template_arg)
+    yield cg.register_component(var, {})
+    template_ = yield cg.templatable(config, args, cg.uint32)
+    cg.add(var.set_delay(template_))
+    yield var
+
+
+@register_action('if', IfAction, cv.All({
+    cv.Required(CONF_CONDITION): validate_potentially_and_condition,
+    cv.Optional(CONF_THEN): validate_action_list,
+    cv.Optional(CONF_ELSE): validate_action_list,
+}, cv.has_at_least_one_key(CONF_THEN, CONF_ELSE)))
+def if_action_to_code(config, action_id, template_arg, args):
+    conditions = yield build_condition(config[CONF_CONDITION], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, conditions)
+    if CONF_THEN in config:
+        actions = yield build_action_list(config[CONF_THEN], template_arg, args)
+        cg.add(var.add_then(actions))
+    if CONF_ELSE in config:
+        actions = yield build_action_list(config[CONF_ELSE], template_arg, args)
+        cg.add(var.add_else(actions))
+    yield var
+
+
+@register_action('while', WhileAction, cv.Schema({
+    cv.Required(CONF_CONDITION): validate_potentially_and_condition,
+    cv.Required(CONF_THEN): validate_action_list,
+}))
+def while_action_to_code(config, action_id, template_arg, args):
+    conditions = yield build_condition(config[CONF_CONDITION], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, conditions)
+    actions = yield build_action_list(config[CONF_THEN], template_arg, args)
+    cg.add(var.add_then(actions))
+    yield var
+
+
+def validate_wait_until(value):
+    schema = cv.Schema({
+        cv.Required(CONF_CONDITION): validate_potentially_and_condition,
+    })
+    if isinstance(value, dict) and CONF_CONDITION in value:
+        return schema(value)
+    return validate_wait_until({CONF_CONDITION: value})
+
+
+@register_action('wait_until', WaitUntilAction, validate_wait_until)
+def wait_until_action_to_code(config, action_id, template_arg, args):
+    conditions = yield build_condition(config[CONF_CONDITION], template_arg, args)
+    var = cg.new_Pvariable(action_id, template_arg, conditions)
+    yield cg.register_component(var, {})
+    yield var
+
+
+@register_action('lambda', LambdaAction, cv.lambda_)
+def lambda_action_to_code(config, action_id, template_arg, args):
+    lambda_ = yield cg.process_lambda(config, args, return_type=cg.void)
+    yield cg.new_Pvariable(action_id, template_arg, lambda_)
+
+
+@register_action('component.update', UpdateComponentAction, maybe_simple_id({
+    cv.Required(CONF_ID): cv.use_id(cg.PollingComponent),
+}))
+def component_update_action_to_code(config, action_id, template_arg, args):
+    comp = yield cg.get_variable(config[CONF_ID])
+    yield cg.new_Pvariable(action_id, template_arg, comp)
+
+
+@coroutine
+def build_action(full_config, template_arg, args):
+    registry_entry, config = cg.extract_registry_entry_config(ACTION_REGISTRY, full_config)
+    action_id = full_config[CONF_TYPE_ID]
+    builder = registry_entry.coroutine_fun
+    yield builder(config, action_id, template_arg, args)
+
+
+@coroutine
+def build_action_list(config, templ, arg_type):
+    actions = []
+    for conf in config:
+        action = yield build_action(conf, templ, arg_type)
+        actions.append(action)
+    yield actions
+
+
+@coroutine
+def build_condition(full_config, template_arg, args):
+    registry_entry, config = cg.extract_registry_entry_config(CONDITION_REGISTRY, full_config)
+    action_id = full_config[CONF_TYPE_ID]
+    builder = registry_entry.coroutine_fun
+    yield builder(config, action_id, template_arg, args)
+
+
+@coroutine
+def build_condition_list(config, templ, args):
+    conditions = []
+    for conf in config:
+        condition = yield build_condition(conf, templ, args)
+        conditions.append(condition)
+    yield conditions
+
+
+@coroutine
+def build_automation(trigger, args, config):
+    arg_types = [arg[0] for arg in args]
+    templ = cg.TemplateArguments(*arg_types)
+    obj = cg.new_Pvariable(config[CONF_AUTOMATION_ID], templ, trigger)
+    actions = yield build_action_list(config[CONF_THEN], templ, args)
+    cg.add(obj.add_actions(actions))
+    yield obj

esphome/codegen.py

@@ -0,0 +1,26 @@
+# Base file for all codegen-related imports
+# All integrations should have a line in the import section like this
+#
+# >>> import esphome.codegen as cg
+#
+# Integrations should specifically *NOT* import directly from the
+# other helper modules (cpp_generator etc) directly if they don't
+# want to break suddenly due to a rename (this file will get backports for features).
+
+# pylint: disable=unused-import
+from esphome.cpp_generator import (  # noqa
+    Expression, RawExpression, RawStatement, TemplateArguments,
+    StructInitializer, ArrayInitializer, safe_exp, Statement, LineComment,
+    progmem_array, statement, variable, Pvariable, new_Pvariable,
+    add, add_global, add_library, add_build_flag, add_define,
+    get_variable, get_variable_with_full_id, process_lambda, is_template, templatable, MockObj,
+    MockObjClass)
+from esphome.cpp_helpers import (  # noqa
+    gpio_pin_expression, register_component, build_registry_entry,
+    build_registry_list, extract_registry_entry_config, register_parented)
+from esphome.cpp_types import (  # noqa
+    global_ns, void, nullptr, float_, double, bool_, std_ns, std_string,
+    std_vector, uint8, uint16, uint32, int32, const_char_ptr, NAN,
+    esphome_ns, App, Nameable, Component, ComponentPtr,
+    PollingComponent, Application, optional, arduino_json_ns, JsonObject,
+    JsonObjectRef, JsonObjectConstRef, Controller, GPIOPin)

esphome/components/a4988/a4988.cpp

@@ -0,0 +1,49 @@
+#include "a4988.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace a4988 {
+
+static const char *TAG = "a4988.stepper";
+
+void A4988::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up A4988...");
+  if (this->sleep_pin_ != nullptr) {
+    this->sleep_pin_->setup();
+    this->sleep_pin_->digital_write(false);
+  }
+  this->step_pin_->setup();
+  this->step_pin_->digital_write(false);
+  this->dir_pin_->setup();
+  this->dir_pin_->digital_write(false);
+}
+void A4988::dump_config() {
+  ESP_LOGCONFIG(TAG, "A4988:");
+  LOG_PIN("  Step Pin: ", this->step_pin_);
+  LOG_PIN("  Dir Pin: ", this->dir_pin_);
+  LOG_PIN("  Sleep Pin: ", this->sleep_pin_);
+  LOG_STEPPER(this);
+}
+void A4988::loop() {
+  bool at_target = this->has_reached_target();
+  if (this->sleep_pin_ != nullptr) {
+    this->sleep_pin_->digital_write(!at_target);
+  }
+  if (at_target) {
+    this->high_freq_.stop();
+  } else {
+    this->high_freq_.start();
+  }
+
+  int32_t dir = this->should_step_();
+  if (dir == 0)
+    return;
+
+  this->dir_pin_->digital_write(dir == 1);
+  this->step_pin_->digital_write(true);
+  delayMicroseconds(5);
+  this->step_pin_->digital_write(false);
+}
+
+}  // namespace a4988
+}  // namespace esphome

esphome/components/a4988/a4988.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/esphal.h"
+#include "esphome/components/stepper/stepper.h"
+
+namespace esphome {
+namespace a4988 {
+
+class A4988 : public stepper::Stepper, public Component {
+ public:
+  void set_step_pin(GPIOPin *step_pin) { step_pin_ = step_pin; }
+  void set_dir_pin(GPIOPin *dir_pin) { dir_pin_ = dir_pin; }
+  void set_sleep_pin(GPIOPin *sleep_pin) { this->sleep_pin_ = sleep_pin; }
+  void setup() override;
+  void dump_config() override;
+  void loop() override;
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+ protected:
+  GPIOPin *step_pin_;
+  GPIOPin *dir_pin_;
+  GPIOPin *sleep_pin_{nullptr};
+  HighFrequencyLoopRequester high_freq_;
+};
+
+}  // namespace a4988
+}  // namespace esphome

esphome/components/a4988/stepper.py

@@ -0,0 +1,31 @@
+from esphome import pins
+from esphome.components import stepper
+import esphome.config_validation as cv
+import esphome.codegen as cg
+from esphome.const import CONF_DIR_PIN, CONF_ID, CONF_SLEEP_PIN, CONF_STEP_PIN
+
+
+a4988_ns = cg.esphome_ns.namespace('a4988')
+A4988 = a4988_ns.class_('A4988', stepper.Stepper, cg.Component)
+
+CONFIG_SCHEMA = stepper.STEPPER_SCHEMA.extend({
+    cv.Required(CONF_ID): cv.declare_id(A4988),
+    cv.Required(CONF_STEP_PIN): pins.gpio_output_pin_schema,
+    cv.Required(CONF_DIR_PIN): pins.gpio_output_pin_schema,
+    cv.Optional(CONF_SLEEP_PIN): pins.gpio_output_pin_schema,
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield stepper.register_stepper(var, config)
+
+    step_pin = yield cg.gpio_pin_expression(config[CONF_STEP_PIN])
+    cg.add(var.set_step_pin(step_pin))
+    dir_pin = yield cg.gpio_pin_expression(config[CONF_DIR_PIN])
+    cg.add(var.set_dir_pin(dir_pin))
+
+    if CONF_SLEEP_PIN in config:
+        sleep_pin = yield cg.gpio_pin_expression(config[CONF_SLEEP_PIN])
+        cg.add(var.set_sleep_pin(sleep_pin))

esphome/components/adc/adc_sensor.cpp

@@ -0,0 +1,92 @@
+#include "adc_sensor.h"
+#include "esphome/core/log.h"
+
+#ifdef USE_ADC_SENSOR_VCC
+ADC_MODE(ADC_VCC)
+#endif
+
+namespace esphome {
+namespace adc {
+
+static const char *TAG = "adc";
+
+#ifdef ARDUINO_ARCH_ESP32
+void ADCSensor::set_attenuation(adc_attenuation_t attenuation) { this->attenuation_ = attenuation; }
+#endif
+
+void ADCSensor::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up ADC '%s'...", this->get_name().c_str());
+  GPIOPin(this->pin_, INPUT).setup();
+
+#ifdef ARDUINO_ARCH_ESP32
+  analogSetPinAttenuation(this->pin_, this->attenuation_);
+#endif
+}
+void ADCSensor::dump_config() {
+  LOG_SENSOR("", "ADC Sensor", this);
+#ifdef ARDUINO_ARCH_ESP8266
+#ifdef USE_ADC_SENSOR_VCC
+  ESP_LOGCONFIG(TAG, "  Pin: VCC");
+#else
+  ESP_LOGCONFIG(TAG, "  Pin: %u", this->pin_);
+#endif
+#endif
+#ifdef ARDUINO_ARCH_ESP32
+  ESP_LOGCONFIG(TAG, "  Pin: %u", this->pin_);
+  switch (this->attenuation_) {
+    case ADC_0db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 0db (max 1.1V)");
+      break;
+    case ADC_2_5db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 2.5db (max 1.5V)");
+      break;
+    case ADC_6db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 6db (max 2.2V)");
+      break;
+    case ADC_11db:
+      ESP_LOGCONFIG(TAG, " Attenuation: 11db (max 3.9V)");
+      break;
+  }
+#endif
+  LOG_UPDATE_INTERVAL(this);
+}
+float ADCSensor::get_setup_priority() const { return setup_priority::DATA; }
+void ADCSensor::update() {
+  float value_v = this->sample();
+  ESP_LOGD(TAG, "'%s': Got voltage=%.2fV", this->get_name().c_str(), value_v);
+  this->publish_state(value_v);
+}
+float ADCSensor::sample() {
+#ifdef ARDUINO_ARCH_ESP32
+  float value_v = analogRead(this->pin_) / 4095.0f;
+  switch (this->attenuation_) {
+    case ADC_0db:
+      value_v *= 1.1;
+      break;
+    case ADC_2_5db:
+      value_v *= 1.5;
+      break;
+    case ADC_6db:
+      value_v *= 2.2;
+      break;
+    case ADC_11db:
+      value_v *= 3.9;
+      break;
+  }
+  return value_v;
+#endif
+
+#ifdef ARDUINO_ARCH_ESP8266
+#ifdef USE_ADC_SENSOR_VCC
+  return ESP.getVcc() / 1024.0f;
+#else
+  return analogRead(this->pin_) / 1024.0f;
+#endif
+#endif
+}
+#ifdef ARDUINO_ARCH_ESP8266
+std::string ADCSensor::unique_id() { return get_mac_address() + "-adc"; }
+#endif
+
+}  // namespace adc
+}  // namespace esphome

esphome/components/adc/adc_sensor.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/esphal.h"
+#include "esphome/core/defines.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/voltage_sampler/voltage_sampler.h"
+
+namespace esphome {
+namespace adc {
+
+class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
+ public:
+#ifdef ARDUINO_ARCH_ESP32
+  /// Set the attenuation for this pin. Only available on the ESP32.
+  void set_attenuation(adc_attenuation_t attenuation);
+#endif
+
+  /// Update adc values.
+  void update() override;
+  /// Setup ADc
+  void setup() override;
+  void dump_config() override;
+  /// `HARDWARE_LATE` setup priority.
+  float get_setup_priority() const override;
+  void set_pin(uint8_t pin) { this->pin_ = pin; }
+  float sample() override;
+
+#ifdef ARDUINO_ARCH_ESP8266
+  std::string unique_id() override;
+#endif
+
+ protected:
+  uint8_t pin_;
+
+#ifdef ARDUINO_ARCH_ESP32
+  adc_attenuation_t attenuation_{ADC_0db};
+#endif
+};
+
+}  // namespace adc
+}  // namespace esphome

esphome/components/adc/sensor.py

@@ -0,0 +1,48 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import pins
+from esphome.components import sensor, voltage_sampler
+from esphome.const import CONF_ATTENUATION, CONF_ID, CONF_PIN, ICON_FLASH, UNIT_VOLT
+
+
+AUTO_LOAD = ['voltage_sampler']
+
+ATTENUATION_MODES = {
+    '0db': cg.global_ns.ADC_0db,
+    '2.5db': cg.global_ns.ADC_2_5db,
+    '6db': cg.global_ns.ADC_6db,
+    '11db': cg.global_ns.ADC_11db,
+}
+
+
+def validate_adc_pin(value):
+    vcc = str(value).upper()
+    if vcc == 'VCC':
+        return cv.only_on_esp8266(vcc)
+    return pins.analog_pin(value)
+
+
+adc_ns = cg.esphome_ns.namespace('adc')
+ADCSensor = adc_ns.class_('ADCSensor', sensor.Sensor, cg.PollingComponent,
+                          voltage_sampler.VoltageSampler)
+
+CONFIG_SCHEMA = sensor.sensor_schema(UNIT_VOLT, ICON_FLASH, 2).extend({
+    cv.GenerateID(): cv.declare_id(ADCSensor),
+    cv.Required(CONF_PIN): validate_adc_pin,
+    cv.SplitDefault(CONF_ATTENUATION, esp32='0db'):
+        cv.All(cv.only_on_esp32, cv.enum(ATTENUATION_MODES, lower=True)),
+}).extend(cv.polling_component_schema('60s'))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield sensor.register_sensor(var, config)
+
+    if config[CONF_PIN] == 'VCC':
+        cg.add_define('USE_ADC_SENSOR_VCC')
+    else:
+        cg.add(var.set_pin(config[CONF_PIN]))
+
+    if CONF_ATTENUATION in config:
+        cg.add(var.set_attenuation(config[CONF_ATTENUATION]))

esphome/components/ads1115/__init__.py

@@ -0,0 +1,21 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c
+from esphome.const import CONF_ID
+
+DEPENDENCIES = ['i2c']
+AUTO_LOAD = ['sensor', 'voltage_sampler']
+MULTI_CONF = True
+
+ads1115_ns = cg.esphome_ns.namespace('ads1115')
+ADS1115Component = ads1115_ns.class_('ADS1115Component', cg.Component, i2c.I2CDevice)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(ADS1115Component),
+}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(None))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)

esphome/components/ads1115/ads1115.cpp

@@ -0,0 +1,164 @@
+#include "ads1115.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace ads1115 {
+
+static const char *TAG = "ads1115";
+static const uint8_t ADS1115_REGISTER_CONVERSION = 0x00;
+static const uint8_t ADS1115_REGISTER_CONFIG = 0x01;
+
+static const uint8_t ADS1115_DATA_RATE_860_SPS = 0b111;
+
+void ADS1115Component::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up ADS1115...");
+  uint16_t value;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONVERSION, &value)) {
+    this->mark_failed();
+    return;
+  }
+  uint16_t config = 0;
+  // Clear single-shot bit
+  //        0b0xxxxxxxxxxxxxxx
+  config |= 0b0000000000000000;
+  // Setup multiplexer
+  //        0bx000xxxxxxxxxxxx
+  config |= ADS1115_MULTIPLEXER_P0_N1 << 12;
+
+  // Setup Gain
+  //        0bxxxx000xxxxxxxxx
+  config |= ADS1115_GAIN_6P144 << 9;
+
+  // Set singleshot mode
+  //        0bxxxxxxx1xxxxxxxx
+  config |= 0b0000000100000000;
+
+  // Set data rate - 860 samples per second (we're in singleshot mode)
+  //        0bxxxxxxxx100xxxxx
+  config |= ADS1115_DATA_RATE_860_SPS << 5;
+
+  // Set comparator mode - hysteresis
+  //        0bxxxxxxxxxxx0xxxx
+  config |= 0b0000000000000000;
+
+  // Set comparator polarity - active low
+  //        0bxxxxxxxxxxxx0xxx
+  config |= 0b0000000000000000;
+
+  // Set comparator latch enabled - false
+  //        0bxxxxxxxxxxxxx0xx
+  config |= 0b0000000000000000;
+
+  // Set comparator que mode - disabled
+  //        0bxxxxxxxxxxxxxx11
+  config |= 0b0000000000000011;
+
+  if (!this->write_byte_16(ADS1115_REGISTER_CONFIG, config)) {
+    this->mark_failed();
+    return;
+  }
+  for (auto *sensor : this->sensors_) {
+    this->set_interval(sensor->get_name(), sensor->update_interval(),
+                       [this, sensor] { this->request_measurement(sensor); });
+  }
+}
+void ADS1115Component::dump_config() {
+  ESP_LOGCONFIG(TAG, "Setting up ADS1115...");
+  LOG_I2C_DEVICE(this);
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication with ADS1115 failed!");
+  }
+
+  for (auto *sensor : this->sensors_) {
+    LOG_SENSOR("  ", "Sensor", sensor);
+    ESP_LOGCONFIG(TAG, "    Multiplexer: %u", sensor->get_multiplexer());
+    ESP_LOGCONFIG(TAG, "    Gain: %u", sensor->get_gain());
+  }
+}
+float ADS1115Component::get_setup_priority() const { return setup_priority::DATA; }
+float ADS1115Component::request_measurement(ADS1115Sensor *sensor) {
+  uint16_t config;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONFIG, &config)) {
+    this->status_set_warning();
+    return NAN;
+  }
+  // Multiplexer
+  //        0bxBBBxxxxxxxxxxxx
+  config &= 0b1000111111111111;
+  config |= (sensor->get_multiplexer() & 0b111) << 12;
+
+  // Gain
+  //        0bxxxxBBBxxxxxxxxx
+  config &= 0b1111000111111111;
+  config |= (sensor->get_gain() & 0b111) << 9;
+  // Start conversion
+  config |= 0b1000000000000000;
+
+  if (!this->write_byte_16(ADS1115_REGISTER_CONFIG, config)) {
+    this->status_set_warning();
+    return NAN;
+  }
+
+  // about 1.6 ms with 860 samples per second
+  delay(2);
+
+  uint32_t start = millis();
+  while (this->read_byte_16(ADS1115_REGISTER_CONFIG, &config) && (config >> 15) == 0) {
+    if (millis() - start > 100) {
+      ESP_LOGW(TAG, "Reading ADS1115 timed out");
+      this->status_set_warning();
+      return NAN;
+    }
+    yield();
+  }
+
+  uint16_t raw_conversion;
+  if (!this->read_byte_16(ADS1115_REGISTER_CONVERSION, &raw_conversion)) {
+    this->status_set_warning();
+    return NAN;
+  }
+  auto signed_conversion = static_cast<int16_t>(raw_conversion);
+
+  float millivolts;
+  switch (sensor->get_gain()) {
+    case ADS1115_GAIN_6P144:
+      millivolts = signed_conversion * 0.187500f;
+      break;
+    case ADS1115_GAIN_4P096:
+      millivolts = signed_conversion * 0.125000f;
+      break;
+    case ADS1115_GAIN_2P048:
+      millivolts = signed_conversion * 0.062500f;
+      break;
+    case ADS1115_GAIN_1P024:
+      millivolts = signed_conversion * 0.031250f;
+      break;
+    case ADS1115_GAIN_0P512:
+      millivolts = signed_conversion * 0.015625f;
+      break;
+    case ADS1115_GAIN_0P256:
+      millivolts = signed_conversion * 0.007813f;
+      break;
+    default:
+      millivolts = NAN;
+  }
+
+  this->status_clear_warning();
+  return millivolts / 1e4f;
+}
+
+uint8_t ADS1115Sensor::get_multiplexer() const { return this->multiplexer_; }
+void ADS1115Sensor::set_multiplexer(ADS1115Multiplexer multiplexer) { this->multiplexer_ = multiplexer; }
+uint8_t ADS1115Sensor::get_gain() const { return this->gain_; }
+void ADS1115Sensor::set_gain(ADS1115Gain gain) { this->gain_ = gain; }
+float ADS1115Sensor::sample() { return this->parent_->request_measurement(this); }
+void ADS1115Sensor::update() {
+  float v = this->parent_->request_measurement(this);
+  if (!isnan(v)) {
+    ESP_LOGD(TAG, "'%s': Got Voltage=%fV", this->get_name().c_str(), v);
+    this->publish_state(v);
+  }
+}
+
+}  // namespace ads1115
+}  // namespace esphome

esphome/components/ads1115/ads1115.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/components/voltage_sampler/voltage_sampler.h"
+
+namespace esphome {
+namespace ads1115 {
+
+enum ADS1115Multiplexer {
+  ADS1115_MULTIPLEXER_P0_N1 = 0b000,
+  ADS1115_MULTIPLEXER_P0_N3 = 0b001,
+  ADS1115_MULTIPLEXER_P1_N3 = 0b010,
+  ADS1115_MULTIPLEXER_P2_N3 = 0b011,
+  ADS1115_MULTIPLEXER_P0_NG = 0b100,
+  ADS1115_MULTIPLEXER_P1_NG = 0b101,
+  ADS1115_MULTIPLEXER_P2_NG = 0b110,
+  ADS1115_MULTIPLEXER_P3_NG = 0b111,
+};
+
+enum ADS1115Gain {
+  ADS1115_GAIN_6P144 = 0b000,
+  ADS1115_GAIN_4P096 = 0b001,
+  ADS1115_GAIN_2P048 = 0b010,
+  ADS1115_GAIN_1P024 = 0b011,
+  ADS1115_GAIN_0P512 = 0b100,
+  ADS1115_GAIN_0P256 = 0b101,
+};
+
+class ADS1115Sensor;
+
+class ADS1115Component : public Component, public i2c::I2CDevice {
+ public:
+  void register_sensor(ADS1115Sensor *obj) { this->sensors_.push_back(obj); }
+  /// Set up the internal sensor array.
+  void setup() override;
+  void dump_config() override;
+  /// HARDWARE_LATE setup priority
+  float get_setup_priority() const override;
+
+  /// Helper method to request a measurement from a sensor.
+  float request_measurement(ADS1115Sensor *sensor);
+
+ protected:
+  std::vector<ADS1115Sensor *> sensors_;
+};
+
+/// Internal holder class that is in instance of Sensor so that the hub can create individual sensors.
+class ADS1115Sensor : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
+ public:
+  ADS1115Sensor(ADS1115Component *parent) : parent_(parent) {}
+  void update() override;
+  void set_multiplexer(ADS1115Multiplexer multiplexer);
+  void set_gain(ADS1115Gain gain);
+
+  float sample() override;
+  uint8_t get_multiplexer() const;
+  uint8_t get_gain() const;
+
+ protected:
+  ADS1115Component *parent_;
+  ADS1115Multiplexer multiplexer_;
+  ADS1115Gain gain_;
+};
+
+}  // namespace ads1115
+}  // namespace esphome

esphome/components/ads1115/sensor.py

@@ -0,0 +1,63 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor, voltage_sampler
+from esphome.const import CONF_GAIN, CONF_MULTIPLEXER, ICON_FLASH, UNIT_VOLT, CONF_ID
+from esphome.py_compat import string_types
+from . import ads1115_ns, ADS1115Component
+
+DEPENDENCIES = ['ads1115']
+
+ADS1115Multiplexer = ads1115_ns.enum('ADS1115Multiplexer')
+MUX = {
+    'A0_A1': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P0_N1,
+    'A0_A3': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P0_N3,
+    'A1_A3': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P1_N3,
+    'A2_A3': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P2_N3,
+    'A0_GND': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P0_NG,
+    'A1_GND': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P1_NG,
+    'A2_GND': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P2_NG,
+    'A3_GND': ADS1115Multiplexer.ADS1115_MULTIPLEXER_P3_NG,
+}
+
+ADS1115Gain = ads1115_ns.enum('ADS1115Gain')
+GAIN = {
+    '6.144': ADS1115Gain.ADS1115_GAIN_6P144,
+    '4.096': ADS1115Gain.ADS1115_GAIN_4P096,
+    '2.048': ADS1115Gain.ADS1115_GAIN_2P048,
+    '1.024': ADS1115Gain.ADS1115_GAIN_1P024,
+    '0.512': ADS1115Gain.ADS1115_GAIN_0P512,
+    '0.256': ADS1115Gain.ADS1115_GAIN_0P256,
+}
+
+
+def validate_gain(value):
+    if isinstance(value, float):
+        value = u'{:0.03f}'.format(value)
+    elif not isinstance(value, string_types):
+        raise cv.Invalid('invalid gain "{}"'.format(value))
+
+    return cv.enum(GAIN)(value)
+
+
+ADS1115Sensor = ads1115_ns.class_('ADS1115Sensor', sensor.Sensor, cg.PollingComponent,
+                                  voltage_sampler.VoltageSampler)
+
+CONF_ADS1115_ID = 'ads1115_id'
+CONFIG_SCHEMA = sensor.sensor_schema(UNIT_VOLT, ICON_FLASH, 3).extend({
+    cv.GenerateID(): cv.declare_id(ADS1115Sensor),
+    cv.GenerateID(CONF_ADS1115_ID): cv.use_id(ADS1115Component),
+    cv.Required(CONF_MULTIPLEXER): cv.enum(MUX, upper=True, space='_'),
+    cv.Required(CONF_GAIN): validate_gain,
+}).extend(cv.polling_component_schema('60s'))
+
+
+def to_code(config):
+    paren = yield cg.get_variable(config[CONF_ADS1115_ID])
+    var = cg.new_Pvariable(config[CONF_ID], paren)
+    yield sensor.register_sensor(var, config)
+    yield cg.register_component(var, config)
+
+    cg.add(var.set_multiplexer(config[CONF_MULTIPLEXER]))
+    cg.add(var.set_gain(config[CONF_GAIN]))
+
+    cg.add(paren.register_sensor(var))

esphome/components/am2320/am2320.cpp

@@ -0,0 +1,107 @@
+// Implementation based on:
+//  - ESPEasy: https://github.com/letscontrolit/ESPEasy/blob/mega/src/_P034_DHT12.ino
+//  - DHT12_sensor_library: https://github.com/xreef/DHT12_sensor_library/blob/master/DHT12.cpp
+//  - Arduino - AM2320: https://github.com/EngDial/AM2320/blob/master/src/AM2320.cpp
+
+#include "am2320.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace am2320 {
+
+static const char *TAG = "am2320";
+
+// ---=== Calc CRC16 ===---
+uint16_t crc_16(uint8_t *ptr, uint8_t length) {
+  uint16_t crc = 0xFFFF;
+  uint8_t i;
+  //------------------------------
+  while (length--) {
+    crc ^= *ptr++;
+    for (i = 0; i < 8; i++)
+      if ((crc & 0x01) != 0) {
+        crc >>= 1;
+        crc ^= 0xA001;
+      } else
+        crc >>= 1;
+  }
+  return crc;
+}
+
+void AM2320Component::update() {
+  uint8_t data[8];
+  data[0] = 0;
+  data[1] = 4;
+  if (!this->read_data_(data)) {
+    this->status_set_warning();
+    return;
+  }
+
+  float temperature = (((data[4] & 0x7F) << 8) + data[5]) / 10.0;
+  temperature = (data[4] & 0x80) ? -temperature : temperature;
+  float humidity = ((data[2] << 8) + data[3]) / 10.0;
+
+  ESP_LOGD(TAG, "Got temperature=%.1f°C humidity=%.1f%%", temperature, humidity);
+  if (this->temperature_sensor_ != nullptr)
+    this->temperature_sensor_->publish_state(temperature);
+  if (this->humidity_sensor_ != nullptr)
+    this->humidity_sensor_->publish_state(humidity);
+  this->status_clear_warning();
+}
+void AM2320Component::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up AM2320...");
+  uint8_t data[8];
+  data[0] = 0;
+  data[1] = 4;
+  if (!this->read_data_(data)) {
+    this->mark_failed();
+    return;
+  }
+}
+void AM2320Component::dump_config() {
+  ESP_LOGD(TAG, "AM2320:");
+  LOG_I2C_DEVICE(this);
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication with AM2320 failed!");
+  }
+  LOG_SENSOR("  ", "Temperature", this->temperature_sensor_);
+  LOG_SENSOR("  ", "Humidity", this->humidity_sensor_);
+}
+float AM2320Component::get_setup_priority() const { return setup_priority::DATA; }
+
+bool AM2320Component::read_bytes_(uint8_t a_register, uint8_t *data, uint8_t len, uint32_t conversion) {
+  if (!this->write_bytes(a_register, data, 2)) {
+    ESP_LOGW(TAG, "Writing bytes for AM2320 failed!");
+    return false;
+  }
+
+  if (conversion > 0)
+    delay(conversion);
+  return this->parent_->raw_receive(this->address_, data, len);
+}
+
+bool AM2320Component::read_data_(uint8_t *data) {
+  // Wake up
+  this->write_bytes(0, data, 0);
+
+  // Write instruction 3, 2 bytes, get 8 bytes back (2 preamble, 2 bytes temperature, 2 bytes humidity, 2 bytes CRC)
+  if (!this->read_bytes_(3, data, 8, 2)) {
+    ESP_LOGW(TAG, "Updating AM2320 failed!");
+    return false;
+  }
+
+  uint16_t checksum;
+
+  checksum = data[7] << 8;
+  checksum += data[6];
+
+  if (crc_16(data, 6) != checksum) {
+    ESP_LOGW(TAG, "AM2320 Checksum invalid!");
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace am2320
+}  // namespace esphome

esphome/components/am2320/am2320.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/i2c/i2c.h"
+
+namespace esphome {
+namespace am2320 {
+
+class AM2320Component : public PollingComponent, public i2c::I2CDevice {
+ public:
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override;
+  void update() override;
+
+  void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
+  void set_humidity_sensor(sensor::Sensor *humidity_sensor) { humidity_sensor_ = humidity_sensor; }
+
+ protected:
+  bool read_data_(uint8_t *data);
+  bool read_bytes_(uint8_t a_register, uint8_t *data, uint8_t len, uint32_t conversion = 0);
+
+  sensor::Sensor *temperature_sensor_;
+  sensor::Sensor *humidity_sensor_;
+};
+
+}  // namespace am2320
+}  // namespace esphome

esphome/components/am2320/sensor.py

@@ -0,0 +1,30 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c, sensor
+from esphome.const import CONF_HUMIDITY, CONF_ID, CONF_TEMPERATURE, \
+    UNIT_CELSIUS, ICON_THERMOMETER, ICON_WATER_PERCENT, UNIT_PERCENT
+
+DEPENDENCIES = ['i2c']
+
+am2320_ns = cg.esphome_ns.namespace('am2320')
+AM2320Component = am2320_ns.class_('AM2320Component', cg.PollingComponent, i2c.I2CDevice)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(AM2320Component),
+    cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(UNIT_CELSIUS, ICON_THERMOMETER, 1),
+    cv.Optional(CONF_HUMIDITY): sensor.sensor_schema(UNIT_PERCENT, ICON_WATER_PERCENT, 1),
+}).extend(cv.polling_component_schema('60s')).extend(i2c.i2c_device_schema(0x5C))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)
+
+    if CONF_TEMPERATURE in config:
+        sens = yield sensor.new_sensor(config[CONF_TEMPERATURE])
+        cg.add(var.set_temperature_sensor(sens))
+
+    if CONF_HUMIDITY in config:
+        sens = yield sensor.new_sensor(config[CONF_HUMIDITY])
+        cg.add(var.set_humidity_sensor(sens))

esphome/components/apds9960/__init__.py

@@ -0,0 +1,23 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c
+from esphome.const import CONF_ID
+
+DEPENDENCIES = ['i2c']
+AUTO_LOAD = ['sensor', 'binary_sensor']
+MULTI_CONF = True
+
+CONF_APDS9960_ID = 'apds9960_id'
+
+apds9960_nds = cg.esphome_ns.namespace('apds9960')
+APDS9960 = apds9960_nds.class_('APDS9960', cg.PollingComponent, i2c.I2CDevice)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(APDS9960),
+}).extend(cv.polling_component_schema('60s')).extend(i2c.i2c_device_schema(0x39))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)

esphome/components/apds9960/apds9960.cpp

@@ -0,0 +1,374 @@
+#include "apds9960.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace apds9960 {
+
+static const char *TAG = "apds9960";
+
+#define APDS9960_ERROR_CHECK(func) \
+  if (!func) { \
+    this->mark_failed(); \
+    return; \
+  }
+#define APDS9960_WRITE_BYTE(reg, value) APDS9960_ERROR_CHECK(this->write_byte(reg, value));
+
+void APDS9960::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up APDS9960...");
+  uint8_t id;
+  if (!this->read_byte(0x92, &id)) {  // ID register
+    this->error_code_ = COMMUNICATION_FAILED;
+    this->mark_failed();
+    return;
+  }
+
+  if (id != 0xAB && id != 0x9C) {  // APDS9960 all should have one of these IDs
+    this->error_code_ = WRONG_ID;
+    this->mark_failed();
+    return;
+  }
+
+  // ATime (ADC integration time, 2.78ms increments, 0x81) -> 0xDB (103ms)
+  APDS9960_WRITE_BYTE(0x81, 0xDB);
+  // WTime (Wait time, 0x83) -> 0xF6 (27ms)
+  APDS9960_WRITE_BYTE(0x83, 0xF6);
+  // PPulse (0x8E) -> 0x87 (16us, 8 pulses)
+  APDS9960_WRITE_BYTE(0x8E, 0x87);
+  // POffset UR (0x9D) -> 0 (no offset)
+  APDS9960_WRITE_BYTE(0x9D, 0x00);
+  // POffset DL (0x9E) -> 0 (no offset)
+  APDS9960_WRITE_BYTE(0x9E, 0x00);
+  // Config 1 (0x8D) -> 0x60 (no wtime factor)
+  APDS9960_WRITE_BYTE(0x8D, 0x60);
+
+  // Control (0x8F) ->
+  uint8_t val = 0;
+  APDS9960_ERROR_CHECK(this->read_byte(0x8F, &val));
+  val &= 0b00111111;
+  uint8_t led_drive = 0;  // led drive, 0 -> 100mA, 1 -> 50mA, 2 -> 25mA, 3 -> 12.5mA
+  val |= (led_drive & 0b11) << 6;
+
+  val &= 0b11110011;
+  uint8_t proximity_gain = 2;  // proximity gain, 0 -> 1x, 1 -> 2X, 2 -> 4X, 4 -> 8X
+  val |= (proximity_gain & 0b11) << 2;
+
+  val &= 0b11111100;
+  uint8_t ambient_gain = 1;  // ambient light gain, 0 -> 1x, 1 -> 4x, 2 -> 16x, 3 -> 64x
+  val |= (ambient_gain & 0b11) << 0;
+  APDS9960_WRITE_BYTE(0x8F, val);
+
+  // Pers (0x8C) -> 0x11 (2 consecutive proximity or ALS for interrupt)
+  APDS9960_WRITE_BYTE(0x8C, 0x11);
+  // Config 2 (0x90) -> 0x01 (no saturation interrupts or LED boost)
+  APDS9960_WRITE_BYTE(0x90, 0x01);
+  // Config 3 (0x9F) -> 0x00 (enable all photodiodes, no SAI)
+  APDS9960_WRITE_BYTE(0x9F, 0x00);
+  // GPenTh (0xA0, gesture enter threshold) -> 0x28 (also 0x32)
+  APDS9960_WRITE_BYTE(0xA0, 0x28);
+  // GPexTh (0xA1, gesture exit threshold) -> 0x1E
+  APDS9960_WRITE_BYTE(0xA1, 0x1E);
+
+  // GConf 1 (0xA2, gesture config 1) -> 0x40 (4 gesture events for interrupt (GFIFO 3), 1 for exit)
+  APDS9960_WRITE_BYTE(0xA2, 0x40);
+
+  // GConf 2 (0xA3, gesture config 2) ->
+  APDS9960_ERROR_CHECK(this->read_byte(0xA3, &val));
+  val &= 0b10011111;
+  uint8_t gesture_gain = 2;  // gesture gain, 0 -> 1x, 1 -> 2x, 2 -> 4x, 3 -> 8x
+  val |= (gesture_gain & 0b11) << 5;
+
+  val &= 0b11100111;
+  uint8_t gesture_led_drive = 0;  // gesture led drive, 0 -> 100mA, 1 -> 50mA, 2 -> 25mA, 3 -> 12.5mA
+  val |= (gesture_led_drive & 0b11) << 3;
+
+  val &= 0b11111000;
+  // gesture wait time
+  // 0 -> 0ms, 1 -> 2.8ms, 2 -> 5.6ms, 3 -> 8.4ms
+  // 4 -> 14.0ms, 5 -> 22.4 ms, 6 -> 30.8ms, 7 -> 39.2 ms
+  uint8_t gesture_wait_time = 1;  // gesture wait time
+  val |= (gesture_wait_time & 0b111) << 0;
+  APDS9960_WRITE_BYTE(0xA3, val);
+
+  // GOffsetU (0xA4) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA4, 0x00);
+  // GOffsetD (0xA5) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA5, 0x00);
+  // GOffsetL (0xA7) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA7, 0x00);
+  // GOffsetR (0xA9) -> 0x00 (no offset)
+  APDS9960_WRITE_BYTE(0xA9, 0x00);
+  // GPulse (0xA6) -> 0xC9 (32 µs, 10 pulses)
+  APDS9960_WRITE_BYTE(0xA6, 0xC9);
+
+  // GConf 3 (0xAA, gesture config 3) -> 0x00 (all photodiodes active during gesture, all gesture dimensions enabled)
+  // 0x00 -> all dimensions, 0x01 -> up down, 0x02 -> left right
+  APDS9960_WRITE_BYTE(0xAA, 0x00);
+
+  // Enable (0x80) ->
+  val = 0;
+  val |= (0b1) << 0;  // power on
+  val |= (this->is_color_enabled_() & 0b1) << 1;
+  val |= (this->is_proximity_enabled_() & 0b1) << 2;
+  val |= 0b0 << 3;                                  // wait timer disabled
+  val |= 0b0 << 4;                                  // color interrupt disabled
+  val |= 0b0 << 5;                                  // proximity interrupt disabled
+  val |= (this->is_gesture_enabled_() & 0b1) << 6;  // proximity is required for gestures
+  APDS9960_WRITE_BYTE(0x80, val);
+}
+bool APDS9960::is_color_enabled_() const {
+  return this->red_channel_ != nullptr || this->green_channel_ != nullptr || this->blue_channel_ != nullptr ||
+         this->clear_channel_ != nullptr;
+}
+
+void APDS9960::dump_config() {
+  ESP_LOGCONFIG(TAG, "APDS9960:");
+  LOG_I2C_DEVICE(this);
+
+  LOG_UPDATE_INTERVAL(this);
+  if (this->is_failed()) {
+    switch (this->error_code_) {
+      case COMMUNICATION_FAILED:
+        ESP_LOGE(TAG, "Communication with APDS9960 failed!");
+        break;
+      case WRONG_ID:
+        ESP_LOGE(TAG, "APDS9960 has invalid id!");
+        break;
+      default:
+        ESP_LOGE(TAG, "Setting up APDS9960 registers failed!");
+        break;
+    }
+  }
+}
+
+#define APDS9960_WARNING_CHECK(func, warning) \
+  if (!(func)) { \
+    ESP_LOGW(TAG, warning); \
+    this->status_set_warning(); \
+    return; \
+  }
+
+void APDS9960::update() {
+  uint8_t status;
+  APDS9960_WARNING_CHECK(this->read_byte(0x93, &status), "Reading status bit failed.");
+  this->status_clear_warning();
+
+  this->read_color_data_(status);
+  this->read_proximity_data_(status);
+}
+
+void APDS9960::loop() { this->read_gesture_data_(); }
+
+void APDS9960::read_color_data_(uint8_t status) {
+  if (!this->is_color_enabled_())
+    return;
+
+  if ((status & 0x01) == 0x00) {
+    // color data not ready yet.
+    return;
+  }
+
+  uint8_t raw[8];
+  APDS9960_WARNING_CHECK(this->read_bytes(0x94, raw, 8), "Reading color values failed.");
+
+  uint16_t uint_clear = (uint16_t(raw[1]) << 8) | raw[0];
+  uint16_t uint_red = (uint16_t(raw[3]) << 8) | raw[2];
+  uint16_t uint_green = (uint16_t(raw[5]) << 8) | raw[4];
+  uint16_t uint_blue = (uint16_t(raw[7]) << 8) | raw[6];
+
+  float clear_perc = (uint_clear / float(UINT16_MAX)) * 100.0f;
+  float red_perc = (uint_red / float(UINT16_MAX)) * 100.0f;
+  float green_perc = (uint_green / float(UINT16_MAX)) * 100.0f;
+  float blue_perc = (uint_blue / float(UINT16_MAX)) * 100.0f;
+
+  ESP_LOGD(TAG, "Got clear=%.1f%% red=%.1f%% green=%.1f%% blue=%.1f%%", clear_perc, red_perc, green_perc, blue_perc);
+  if (this->clear_channel_ != nullptr)
+    this->clear_channel_->publish_state(clear_perc);
+  if (this->red_channel_ != nullptr)
+    this->red_channel_->publish_state(red_perc);
+  if (this->green_channel_ != nullptr)
+    this->green_channel_->publish_state(green_perc);
+  if (this->blue_channel_ != nullptr)
+    this->blue_channel_->publish_state(blue_perc);
+}
+void APDS9960::read_proximity_data_(uint8_t status) {
+  if (this->proximity_ == nullptr)
+    return;
+
+  if ((status & 0b10) == 0x00) {
+    // proximity data not ready yet.
+    return;
+  }
+
+  uint8_t prox;
+  APDS9960_WARNING_CHECK(this->read_byte(0x9C, &prox), "Reading proximity values failed.");
+
+  float prox_perc = (prox / float(UINT8_MAX)) * 100.0f;
+  ESP_LOGD(TAG, "Got proximity=%.1f%%", prox_perc);
+  this->proximity_->publish_state(prox_perc);
+}
+void APDS9960::read_gesture_data_() {
+  if (!this->is_gesture_enabled_())
+    return;
+
+  uint8_t status;
+  APDS9960_WARNING_CHECK(this->read_byte(0xAF, &status), "Reading gesture status failed.");
+
+  if ((status & 0b01) == 0) {
+    // GVALID is false
+    return;
+  }
+
+  if ((status & 0b10) == 0b10) {
+    ESP_LOGV(TAG, "FIFO buffer has filled to capacity!");
+  }
+
+  uint8_t fifo_level;
+  APDS9960_WARNING_CHECK(this->read_byte(0xAE, &fifo_level), "Reading FIFO level failed.");
+  if (fifo_level == 0)
+    // no data to process
+    return;
+
+  APDS9960_WARNING_CHECK(fifo_level <= 32, "FIFO level has invalid value.")
+
+  uint8_t buf[128];
+  for (uint8_t pos = 0; pos < fifo_level * 4; pos += 32) {
+    // The ESP's i2c driver has a limited buffer size.
+    // This way of retrieving the data should be wrong according to the datasheet
+    // but it seems to work.
+    uint8_t read = std::min(32, fifo_level * 4 - pos);
+    APDS9960_WARNING_CHECK(this->read_bytes(0xFC + pos, buf + pos, read), "Reading FIFO buffer failed.");
+  }
+
+  if (millis() - this->gesture_start_ > 500) {
+    this->gesture_up_started_ = false;
+    this->gesture_down_started_ = false;
+    this->gesture_left_started_ = false;
+    this->gesture_right_started_ = false;
+  }
+
+  for (uint32_t i = 0; i < fifo_level * 4; i += 4) {
+    const int up = buf[i + 0];  // NOLINT
+    const int down = buf[i + 1];
+    const int left = buf[i + 2];
+    const int right = buf[i + 3];
+    this->process_dataset_(up, down, left, right);
+  }
+}
+void APDS9960::report_gesture_(int gesture) {
+  binary_sensor::BinarySensor *bin;
+  switch (gesture) {
+    case 1:
+      bin = this->up_direction_;
+      this->gesture_up_started_ = false;
+      this->gesture_down_started_ = false;
+      ESP_LOGD(TAG, "Got gesture UP");
+      break;
+    case 2:
+      bin = this->down_direction_;
+      this->gesture_up_started_ = false;
+      this->gesture_down_started_ = false;
+      ESP_LOGD(TAG, "Got gesture DOWN");
+      break;
+    case 3:
+      bin = this->left_direction_;
+      this->gesture_left_started_ = false;
+      this->gesture_right_started_ = false;
+      ESP_LOGD(TAG, "Got gesture LEFT");
+      break;
+    case 4:
+      bin = this->right_direction_;
+      this->gesture_left_started_ = false;
+      this->gesture_right_started_ = false;
+      ESP_LOGD(TAG, "Got gesture RIGHT");
+      break;
+    default:
+      return;
+  }
+
+  if (bin != nullptr) {
+    bin->publish_state(true);
+    bin->publish_state(false);
+  }
+}
+void APDS9960::process_dataset_(int up, int down, int left, int right) {
+  /* Algorithm: (see Figure 11 in datasheet)
+   *
+   * Observation: When a gesture is started, we will see a short amount of time where
+   * the photodiode in the direction of the motion has a much higher count value
+   * than where the gesture originates.
+   *
+   * In this algorithm we continually check the difference between the count values of opposing
+   * directions. For example in the down/up direction we continually look at the difference of the
+   * up count and down count. When DOWN gesture begins, this difference will be positive with a
+   * high magnitude for a short amount of time (magic value here is the difference is at least 13).
+   *
+   * If we see such a pattern, we store that we saw the first part of a gesture (the leading edge).
+   * After that some time can pass during which the difference is zero again (though the count values
+   * are not zero). At the end of a gesture, we will see this difference go into the opposite direction
+   * for a short period of time.
+   *
+   * If a gesture is not ended within 500 milliseconds, we consider the initial trailing edge invalid
+   * and reset the state.
+   *
+   * This algorithm does work, but not too well. Some good signal processing algorithms could
+   * probably improve this a lot, especially since the incoming signal has such a characteristic
+   * and quite noise-free pattern.
+   */
+  const int up_down_delta = up - down;
+  const int left_right_delta = left - right;
+  const bool up_down_significant = abs(up_down_delta) > 13;
+  const bool left_right_significant = abs(left_right_delta) > 13;
+
+  if (up_down_significant) {
+    if (up_down_delta < 0) {
+      if (this->gesture_up_started_) {
+        // trailing edge of gesture up
+        this->report_gesture_(1);  // UP
+      } else {
+        // leading edge of gesture down
+        this->gesture_down_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    } else {
+      if (this->gesture_down_started_) {
+        // trailing edge of gesture down
+        this->report_gesture_(2);  // DOWN
+      } else {
+        // leading edge of gesture up
+        this->gesture_up_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    }
+  }
+
+  if (left_right_significant) {
+    if (left_right_delta < 0) {
+      if (this->gesture_left_started_) {
+        // trailing edge of gesture left
+        this->report_gesture_(3);  // LEFT
+      } else {
+        // leading edge of gesture right
+        this->gesture_right_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    } else {
+      if (this->gesture_right_started_) {
+        // trailing edge of gesture right
+        this->report_gesture_(4);  // RIGHT
+      } else {
+        // leading edge of gesture left
+        this->gesture_left_started_ = true;
+        this->gesture_start_ = millis();
+      }
+    }
+  }
+}
+float APDS9960::get_setup_priority() const { return setup_priority::DATA; }
+bool APDS9960::is_proximity_enabled_() const { return this->proximity_ != nullptr || this->is_gesture_enabled_(); }
+bool APDS9960::is_gesture_enabled_() const {
+  return this->up_direction_ != nullptr || this->left_direction_ != nullptr || this->down_direction_ != nullptr ||
+         this->right_direction_ != nullptr;
+}
+
+}  // namespace apds9960
+}  // namespace esphome

esphome/components/apds9960/apds9960.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/binary_sensor/binary_sensor.h"
+
+namespace esphome {
+namespace apds9960 {
+
+class APDS9960 : public PollingComponent, public i2c::I2CDevice {
+ public:
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override;
+  void update() override;
+  void loop() override;
+
+  void set_red_channel(sensor::Sensor *red_channel) { red_channel_ = red_channel; }
+  void set_green_channel(sensor::Sensor *green_channel) { green_channel_ = green_channel; }
+  void set_blue_channel(sensor::Sensor *blue_channel) { blue_channel_ = blue_channel; }
+  void set_clear_channel(sensor::Sensor *clear_channel) { clear_channel_ = clear_channel; }
+  void set_up_direction(binary_sensor::BinarySensor *up_direction) { up_direction_ = up_direction; }
+  void set_right_direction(binary_sensor::BinarySensor *right_direction) { right_direction_ = right_direction; }
+  void set_down_direction(binary_sensor::BinarySensor *down_direction) { down_direction_ = down_direction; }
+  void set_left_direction(binary_sensor::BinarySensor *left_direction) { left_direction_ = left_direction; }
+  void set_proximity(sensor::Sensor *proximity) { proximity_ = proximity; }
+
+ protected:
+  bool is_color_enabled_() const;
+  bool is_proximity_enabled_() const;
+  bool is_gesture_enabled_() const;
+  void read_color_data_(uint8_t status);
+  void read_proximity_data_(uint8_t status);
+  void read_gesture_data_();
+  void report_gesture_(int gesture);
+  void process_dataset_(int up, int down, int left, int right);
+
+  sensor::Sensor *red_channel_{nullptr};
+  sensor::Sensor *green_channel_{nullptr};
+  sensor::Sensor *blue_channel_{nullptr};
+  sensor::Sensor *clear_channel_{nullptr};
+  binary_sensor::BinarySensor *up_direction_{nullptr};
+  binary_sensor::BinarySensor *right_direction_{nullptr};
+  binary_sensor::BinarySensor *down_direction_{nullptr};
+  binary_sensor::BinarySensor *left_direction_{nullptr};
+  sensor::Sensor *proximity_{nullptr};
+  enum ErrorCode {
+    NONE = 0,
+    COMMUNICATION_FAILED,
+    WRONG_ID,
+  } error_code_{NONE};
+  bool gesture_up_started_{false};
+  bool gesture_down_started_{false};
+  bool gesture_left_started_{false};
+  bool gesture_right_started_{false};
+  uint32_t gesture_start_{0};
+};
+
+}  // namespace apds9960
+}  // namespace esphome

esphome/components/apds9960/binary_sensor.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import binary_sensor
+from esphome.const import CONF_DIRECTION, CONF_DEVICE_CLASS, DEVICE_CLASS_MOVING
+from . import APDS9960, CONF_APDS9960_ID
+
+DEPENDENCIES = ['apds9960']
+
+DIRECTIONS = {
+    'UP': 'set_up_direction',
+    'DOWN': 'set_down_direction',
+    'LEFT': 'set_left_direction',
+    'RIGHT': 'set_right_direction',
+}
+
+CONFIG_SCHEMA = binary_sensor.BINARY_SENSOR_SCHEMA.extend({
+    cv.Required(CONF_DIRECTION): cv.one_of(*DIRECTIONS, upper=True),
+    cv.GenerateID(CONF_APDS9960_ID): cv.use_id(APDS9960),
+    cv.Optional(CONF_DEVICE_CLASS, default=DEVICE_CLASS_MOVING): binary_sensor.device_class,
+})
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_APDS9960_ID])
+    var = yield binary_sensor.new_binary_sensor(config)
+    func = getattr(hub, DIRECTIONS[config[CONF_DIRECTION]])
+    cg.add(func(var))

esphome/components/apds9960/sensor.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+from esphome.const import CONF_TYPE, UNIT_PERCENT, ICON_LIGHTBULB
+from . import APDS9960, CONF_APDS9960_ID
+
+DEPENDENCIES = ['apds9960']
+
+TYPES = {
+    'CLEAR': 'set_clear_channel',
+    'RED': 'set_red_channel',
+    'GREEN': 'set_green_channel',
+    'BLUE': 'set_blue_channel',
+    'PROXIMITY': 'set_proximity',
+}
+
+CONFIG_SCHEMA = sensor.sensor_schema(UNIT_PERCENT, ICON_LIGHTBULB, 1).extend({
+    cv.Required(CONF_TYPE): cv.one_of(*TYPES, upper=True),
+    cv.GenerateID(CONF_APDS9960_ID): cv.use_id(APDS9960),
+})
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_APDS9960_ID])
+    var = yield sensor.new_sensor(config)
+    func = getattr(hub, TYPES[config[CONF_TYPE]])
+    cg.add(func(var))

esphome/components/api/__init__.py

@@ -0,0 +1,118 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import automation
+from esphome.automation import Condition
+from esphome.const import CONF_DATA, CONF_DATA_TEMPLATE, CONF_ID, CONF_PASSWORD, CONF_PORT, \
+    CONF_REBOOT_TIMEOUT, CONF_SERVICE, CONF_VARIABLES, CONF_SERVICES, CONF_TRIGGER_ID
+from esphome.core import CORE, coroutine_with_priority
+
+DEPENDENCIES = ['network']
+
+api_ns = cg.esphome_ns.namespace('api')
+APIServer = api_ns.class_('APIServer', cg.Component, cg.Controller)
+HomeAssistantServiceCallAction = api_ns.class_('HomeAssistantServiceCallAction', automation.Action)
+KeyValuePair = api_ns.class_('KeyValuePair')
+TemplatableKeyValuePair = api_ns.class_('TemplatableKeyValuePair')
+APIConnectedCondition = api_ns.class_('APIConnectedCondition', Condition)
+
+UserService = api_ns.class_('UserService', automation.Trigger)
+ServiceTypeArgument = api_ns.class_('ServiceTypeArgument')
+ServiceArgType = api_ns.enum('ServiceArgType')
+SERVICE_ARG_TYPES = {
+    'bool': ServiceArgType.SERVICE_ARG_TYPE_BOOL,
+    'int': ServiceArgType.SERVICE_ARG_TYPE_INT,
+    'float': ServiceArgType.SERVICE_ARG_TYPE_FLOAT,
+    'string': ServiceArgType.SERVICE_ARG_TYPE_STRING,
+}
+SERVICE_ARG_NATIVE_TYPES = {
+    'bool': bool,
+    'int': cg.int32,
+    'float': float,
+    'string': cg.std_string,
+}
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(APIServer),
+    cv.Optional(CONF_PORT, default=6053): cv.port,
+    cv.Optional(CONF_PASSWORD, default=''): cv.string_strict,
+    cv.Optional(CONF_REBOOT_TIMEOUT, default='5min'): cv.positive_time_period_milliseconds,
+    cv.Optional(CONF_SERVICES): automation.validate_automation({
+        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(UserService),
+        cv.Required(CONF_SERVICE): cv.valid_name,
+        cv.Optional(CONF_VARIABLES, default={}): cv.Schema({
+            cv.validate_id_name: cv.one_of(*SERVICE_ARG_TYPES, lower=True),
+        }),
+    }),
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+@coroutine_with_priority(40.0)
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+
+    cg.add(var.set_port(config[CONF_PORT]))
+    cg.add(var.set_password(config[CONF_PASSWORD]))
+    cg.add(var.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
+
+    for conf in config.get(CONF_SERVICES, []):
+        template_args = []
+        func_args = []
+        service_type_args = []
+        for name, var_ in conf[CONF_VARIABLES].items():
+            native = SERVICE_ARG_NATIVE_TYPES[var_]
+            template_args.append(native)
+            func_args.append((native, name))
+            service_type_args.append(ServiceTypeArgument(name, SERVICE_ARG_TYPES[var_]))
+        templ = cg.TemplateArguments(*template_args)
+        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], templ,
+                                   conf[CONF_SERVICE], service_type_args)
+        cg.add(var.register_user_service(trigger))
+        yield automation.build_automation(trigger, func_args, conf)
+
+    cg.add_define('USE_API')
+    if CORE.is_esp32:
+        cg.add_library('AsyncTCP', '1.0.3')
+    elif CORE.is_esp8266:
+        cg.add_library('ESPAsyncTCP', '1.2.0')
+
+
+HOMEASSISTANT_SERVICE_ACTION_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.use_id(APIServer),
+    cv.Required(CONF_SERVICE): cv.string,
+    cv.Optional(CONF_DATA): cv.Schema({
+        cv.string: cv.string,
+    }),
+    cv.Optional(CONF_DATA_TEMPLATE): cv.Schema({
+        cv.string: cv.string,
+    }),
+    cv.Optional(CONF_VARIABLES): cv.Schema({
+        cv.string: cv.returning_lambda,
+    }),
+})
+
+
+@automation.register_action('homeassistant.service', HomeAssistantServiceCallAction,
+                            HOMEASSISTANT_SERVICE_ACTION_SCHEMA)
+def homeassistant_service_to_code(config, action_id, template_arg, args):
+    serv = yield cg.get_variable(config[CONF_ID])
+    var = cg.new_Pvariable(action_id, template_arg, serv)
+    cg.add(var.set_service(config[CONF_SERVICE]))
+    if CONF_DATA in config:
+        datas = [KeyValuePair(k, v) for k, v in config[CONF_DATA].items()]
+        cg.add(var.set_data(datas))
+    if CONF_DATA_TEMPLATE in config:
+        datas = [KeyValuePair(k, v) for k, v in config[CONF_DATA_TEMPLATE].items()]
+        cg.add(var.set_data_template(datas))
+    if CONF_VARIABLES in config:
+        datas = []
+        for key, value in config[CONF_VARIABLES].items():
+            value_ = yield cg.process_lambda(value, [])
+            datas.append(TemplatableKeyValuePair(key, value_))
+        cg.add(var.set_variables(datas))
+    yield var
+
+
+@automation.register_condition('api.connected', APIConnectedCondition, {})
+def api_connected_to_code(config, condition_id, template_arg, args):
+    yield cg.new_Pvariable(condition_id, template_arg)

esphome/components/api/api.proto

@@ -0,0 +1,506 @@
+syntax = "proto3";
+
+
+// ==================== BASE PACKETS ====================
+
+// The Home Assistant protocol is structured as a simple
+// TCP socket with short binary messages encoded in the protocol buffers format
+// First, a message in this protocol has a specific format:
+//  * VarInt denoting the size of the message object. (type is not part of this)
+//  * VarInt denoting the type of message.
+//  * The message object encoded as a ProtoBuf message
+
+// The connection is established in 4 steps:
+//  * First, the client connects to the server and sends a "Hello Request" identifying itself
+//  * The server responds with a "Hello Response" and selects the protocol version
+//  * After receiving this message, the client attempts to authenticate itself using
+//    the password and a "Connect Request"
+//  * The server responds with a "Connect Response" and notifies of invalid password.
+// If anything in this initial process fails, the connection must immediately closed
+// by both sides and _no_ disconnection message is to be sent.
+
+// Message sent at the beginning of each connection
+// Can only be sent by the client and only at the beginning of the connection
+// ID: 1
+message HelloRequest {
+  // Description of client (like User Agent)
+  // For example "Home Assistant"
+  // Not strictly necessary to send but nice for debugging
+  // purposes.
+  string client_info = 1;
+}
+
+// Confirmation of successful connection request.
+// Can only be sent by the server and only at the beginning of the connection
+// ID: 2
+message HelloResponse {
+  // The version of the API to use. The _client_ (for example Home Assistant) needs to check
+  // for compatibility and if necessary adopt to an older API.
+  // Major is for breaking changes in the base protocol - a mismatch will lead to immediate disconnect_client_
+  // Minor is for breaking changes in individual messages - a mismatch will lead to a warning message
+  uint32 api_version_major = 1;
+  uint32 api_version_minor = 2;
+
+  // A string identifying the server (ESP); like client info this may be empty
+  // and only exists for debugging/logging purposes.
+  // For example "ESPHome v1.10.0 on ESP8266"
+  string server_info = 3;
+}
+
+// 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
+// ID: 3
+message ConnectRequest {
+  // The password to log in with
+  string password = 1;
+}
+
+// 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
+// ID: 4
+message ConnectResponse {
+  bool invalid_password = 1;
+}
+
+// Request to close the connection.
+// Can be sent by both the client and server
+// ID: 5
+message DisconnectRequest {
+  // Do not close the connection before the acknowledgement arrives
+}
+
+// ID: 6
+message DisconnectResponse {
+  // Empty - Both parties are required to close the connection after this
+  // message has been received.
+}
+
+// ID: 7
+message PingRequest {
+  // Empty
+}
+
+// ID: 8
+message PingResponse {
+  // Empty
+}
+
+// ID: 9
+message DeviceInfoRequest {
+  // Empty
+}
+
+// ID: 10
+message DeviceInfoResponse {
+  bool uses_password = 1;
+
+  // The name of the node, given by "App.set_name()"
+  string name = 2;
+
+  // The mac address of the device. For example "AC:BC:32:89:0E:A9"
+  string mac_address = 3;
+
+  // A string describing the ESPHome version. For example "1.10.0"
+  string esphome_core_version = 4;
+
+  // A string describing the date of compilation, this is generated by the compiler
+  // and therefore may not be in the same format all the time.
+  // If the user isn't using ESPHome, this will also not be set.
+  string compilation_time = 5;
+
+  // The model of the board. For example NodeMCU
+  string model = 6;
+
+  bool has_deep_sleep = 7;
+}
+
+// ID: 11
+message ListEntitiesRequest {
+  // Empty
+}
+// ID: 19
+message ListEntitiesDoneResponse {
+  // Empty
+}
+// ID: 20
+message SubscribeStatesRequest {
+  // Empty
+}
+
+// ==================== BINARY SENSOR ====================
+// ID: 12
+message ListEntitiesBinarySensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string device_class = 5;
+  bool is_status_binary_sensor = 6;
+}
+// ID: 21
+message BinarySensorStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+}
+
+// ==================== COVER ====================
+// ID: 13
+message ListEntitiesCoverResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool assumed_state = 5;
+  bool supports_position = 6;
+  bool supports_tilt = 7;
+  string device_class = 8;
+}
+// ID: 22
+message CoverStateResponse {
+  fixed32 key = 1;
+
+  // legacy: state has been removed in 1.13
+  // clients/servers must still send/accept it until the next protocol change
+  enum LegacyCoverState {
+    OPEN = 0;
+    CLOSED = 1;
+  }
+  LegacyCoverState legacy_state = 2;
+
+  float position = 3;
+  float tilt = 4;
+  enum CoverOperation {
+    IDLE = 0;
+    IS_OPENING = 1;
+    IS_CLOSING = 2;
+  }
+  CoverOperation current_operation = 5;
+}
+// ID: 30
+message CoverCommandRequest {
+  fixed32 key = 1;
+
+  // legacy: command has been removed in 1.13
+  // clients/servers must still send/accept it until the next protocol change
+  enum LegacyCoverCommand {
+    OPEN = 0;
+    CLOSE = 1;
+    STOP = 2;
+  }
+  bool has_legacy_command = 2;
+  LegacyCoverCommand legacy_command = 3;
+
+  bool has_position = 4;
+  float position = 5;
+  bool has_tilt = 6;
+  float tilt = 7;
+  bool stop = 8;
+}
+
+// ==================== FAN ====================
+// ID: 14
+message ListEntitiesFanResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool supports_oscillation = 5;
+  bool supports_speed = 6;
+}
+enum FanSpeed {
+  LOW = 0;
+  MEDIUM = 1;
+  HIGH = 2;
+}
+// ID: 23
+message FanStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+  bool oscillating = 3;
+  FanSpeed speed = 4;
+}
+// ID: 31
+message FanCommandRequest {
+  fixed32 key = 1;
+  bool has_state = 2;
+  bool state = 3;
+  bool has_speed = 4;
+  FanSpeed speed = 5;
+  bool has_oscillating = 6;
+  bool oscillating = 7;
+}
+
+// ==================== LIGHT ====================
+// ID: 15
+message ListEntitiesLightResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool supports_brightness = 5;
+  bool supports_rgb = 6;
+  bool supports_white_value = 7;
+  bool supports_color_temperature = 8;
+  float min_mireds = 9;
+  float max_mireds = 10;
+  repeated string effects = 11;
+}
+// ID: 24
+message LightStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+  float brightness = 3;
+  float red = 4;
+  float green = 5;
+  float blue = 6;
+  float white = 7;
+  float color_temperature = 8;
+  string effect = 9;
+}
+// ID: 32
+message LightCommandRequest {
+  fixed32 key = 1;
+  bool has_state = 2;
+  bool state = 3;
+  bool has_brightness = 4;
+  float brightness = 5;
+  bool has_rgb = 6;
+  float red = 7;
+  float green = 8;
+  float blue = 9;
+  bool has_white = 10;
+  float white = 11;
+  bool has_color_temperature = 12;
+  float color_temperature = 13;
+  bool has_transition_length = 14;
+  uint32 transition_length = 15;
+  bool has_flash_length = 16;
+  uint32 flash_length = 17;
+  bool has_effect = 18;
+  string effect = 19;
+}
+
+// ==================== SENSOR ====================
+// ID: 16
+message ListEntitiesSensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+  string unit_of_measurement = 6;
+  int32 accuracy_decimals = 7;
+}
+// ID: 25
+message SensorStateResponse {
+  fixed32 key = 1;
+  float state = 2;
+}
+
+// ==================== SWITCH ====================
+// ID: 17
+message ListEntitiesSwitchResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+  bool assumed_state = 6;
+}
+// ID: 26
+message SwitchStateResponse {
+  fixed32 key = 1;
+  bool state = 2;
+}
+// ID: 33
+message SwitchCommandRequest {
+  fixed32 key = 1;
+  bool state = 2;
+}
+
+// ==================== TEXT SENSOR ====================
+// ID: 18
+message ListEntitiesTextSensorResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  string icon = 5;
+}
+// ID: 27
+message TextSensorStateResponse {
+  fixed32 key = 1;
+  string state = 2;
+}
+
+// ==================== SUBSCRIBE LOGS ====================
+enum LogLevel {
+  NONE = 0;
+  ERROR = 1;
+  WARN = 2;
+  INFO = 3;
+  DEBUG = 4;
+  VERBOSE = 5;
+  VERY_VERBOSE = 6;
+}
+// ID: 28
+message SubscribeLogsRequest {
+  LogLevel level = 1;
+  bool dump_config = 2;
+}
+// ID: 29
+message SubscribeLogsResponse {
+  LogLevel level = 1;
+  string tag = 2;
+  string message = 3;
+  bool send_failed = 4;
+}
+
+// ==================== HOMEASSISTANT.SERVICE ====================
+// ID: 34
+message SubscribeServiceCallsRequest {
+
+}
+
+// ID: 35
+message ServiceCallResponse {
+  string service = 1;
+  map<string, string> data = 2;
+  map<string, string> data_template = 3;
+  map<string, string> variables = 4;
+}
+
+// ==================== IMPORT HOME ASSISTANT STATES ====================
+// 1. Client sends SubscribeHomeAssistantStatesRequest
+// 2. Server responds with zero or more SubscribeHomeAssistantStateResponse (async)
+// 3. Client sends HomeAssistantStateResponse for state changes.
+// ID: 38
+message SubscribeHomeAssistantStatesRequest {
+
+}
+
+// ID: 39
+message SubscribeHomeAssistantStateResponse {
+  string entity_id = 1;
+}
+
+// ID: 40
+message HomeAssistantStateResponse {
+  string entity_id = 1;
+  string state = 2;
+}
+
+// ==================== IMPORT TIME ====================
+// ID: 36
+message GetTimeRequest {
+
+}
+
+// ID: 37
+message GetTimeResponse {
+  fixed32 epoch_seconds = 1;
+}
+
+// ==================== USER-DEFINES SERVICES ====================
+message ListEntitiesServicesArgument {
+  string name = 1;
+  enum Type {
+    BOOL = 0;
+    INT = 1;
+    FLOAT = 2;
+    STRING = 3;
+  }
+  Type type = 2;
+}
+// ID: 41
+message ListEntitiesServicesResponse {
+  string name = 1;
+  fixed32 key = 2;
+  repeated ListEntitiesServicesArgument args = 3;
+}
+message ExecuteServiceArgument {
+  bool bool_ = 1;
+  int32 int_ = 2;
+  float float_ = 3;
+  string string_ = 4;
+}
+// ID: 42
+message ExecuteServiceRequest {
+  fixed32 key = 1;
+  repeated ExecuteServiceArgument args = 2;
+}
+
+// ==================== CAMERA ====================
+// ID: 43
+message ListEntitiesCameraResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+}
+
+// ID: 44
+message CameraImageResponse {
+  fixed32 key = 1;
+  bytes data = 2;
+  bool done = 3;
+}
+// ID: 45
+message CameraImageRequest {
+  bool single = 1;
+  bool stream = 2;
+}
+
+// ==================== CLIMATE ====================
+enum ClimateMode {
+  OFF = 0;
+  AUTO = 1;
+  COOL = 2;
+  HEAT = 3;
+}
+// ID: 46
+message ListEntitiesClimateResponse {
+  string object_id = 1;
+  fixed32 key = 2;
+  string name = 3;
+  string unique_id = 4;
+
+  bool supports_current_temperature = 5;
+  bool supports_two_point_target_temperature = 6;
+  repeated ClimateMode supported_modes = 7;
+  float visual_min_temperature = 8;
+  float visual_max_temperature = 9;
+  float visual_temperature_step = 10;
+  bool supports_away = 11;
+}
+// ID: 47
+message ClimateStateResponse {
+  fixed32 key = 1;
+  ClimateMode mode = 2;
+  float current_temperature = 3;
+  float target_temperature = 4;
+  float target_temperature_low = 5;
+  float target_temperature_high = 6;
+  bool away = 7;
+}
+// ID: 48
+message ClimateCommandRequest {
+  fixed32 key = 1;
+  bool has_mode = 2;
+  ClimateMode mode = 3;
+  bool has_target_temperature = 4;
+  float target_temperature = 5;
+  bool has_target_temperature_low = 6;
+  float target_temperature_low = 7;
+  bool has_target_temperature_high = 8;
+  float target_temperature_high = 9;
+  bool has_away = 10;
+  bool away = 11;
+}

esphome/components/api/api_message.cpp

@@ -0,0 +1,87 @@
+#include "api_message.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+static const char *TAG = "api.message";
+
+bool APIMessage::decode_varint(uint32_t field_id, uint32_t value) { return false; }
+bool APIMessage::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) { return false; }
+bool APIMessage::decode_32bit(uint32_t field_id, uint32_t value) { return false; }
+void APIMessage::encode(APIBuffer &buffer) {}
+void APIMessage::decode(const uint8_t *buffer, size_t length) {
+  uint32_t i = 0;
+  bool error = false;
+  while (i < length) {
+    uint32_t consumed;
+    auto res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+    if (!res.has_value()) {
+      ESP_LOGV(TAG, "Invalid field start at %u", i);
+      break;
+    }
+
+    uint32_t field_type = (*res) & 0b111;
+    uint32_t field_id = (*res) >> 3;
+    i += consumed;
+
+    switch (field_type) {
+      case 0: {  // VarInt
+        res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+        if (!res.has_value()) {
+          ESP_LOGV(TAG, "Invalid VarInt at %u", i);
+          error = true;
+          break;
+        }
+        if (!this->decode_varint(field_id, *res)) {
+          ESP_LOGV(TAG, "Cannot decode VarInt field %u with value %u!", field_id, *res);
+        }
+        i += consumed;
+        break;
+      }
+      case 2: {  // Length-delimited
+        res = proto_decode_varuint32(&buffer[i], length - i, &consumed);
+        if (!res.has_value()) {
+          ESP_LOGV(TAG, "Invalid Length Delimited at %u", i);
+          error = true;
+          break;
+        }
+        i += consumed;
+        if (*res > length - i) {
+          ESP_LOGV(TAG, "Out-of-bounds Length Delimited at %u", i);
+          error = true;
+          break;
+        }
+        if (!this->decode_length_delimited(field_id, &buffer[i], *res)) {
+          ESP_LOGV(TAG, "Cannot decode Length Delimited field %u!", field_id);
+        }
+        i += *res;
+        break;
+      }
+      case 5: {  // 32-bit
+        if (length - i < 4) {
+          ESP_LOGV(TAG, "Out-of-bounds Fixed32-bit at %u", i);
+          error = true;
+          break;
+        }
+        uint32_t val = (uint32_t(buffer[i]) << 0) | (uint32_t(buffer[i + 1]) << 8) | (uint32_t(buffer[i + 2]) << 16) |
+                       (uint32_t(buffer[i + 3]) << 24);
+        if (!this->decode_32bit(field_id, val)) {
+          ESP_LOGV(TAG, "Cannot decode 32-bit field %u with value %u!", field_id, val);
+        }
+        i += 4;
+        break;
+      }
+      default:
+        ESP_LOGV(TAG, "Invalid field type at %u", i);
+        error = true;
+        break;
+    }
+    if (error) {
+      break;
+    }
+  }
+}
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/api_message.h

@@ -0,0 +1,79 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "util.h"
+
+namespace esphome {
+namespace api {
+
+enum class APIMessageType {
+  HELLO_REQUEST = 1,
+  HELLO_RESPONSE = 2,
+  CONNECT_REQUEST = 3,
+  CONNECT_RESPONSE = 4,
+  DISCONNECT_REQUEST = 5,
+  DISCONNECT_RESPONSE = 6,
+  PING_REQUEST = 7,
+  PING_RESPONSE = 8,
+  DEVICE_INFO_REQUEST = 9,
+  DEVICE_INFO_RESPONSE = 10,
+
+  LIST_ENTITIES_REQUEST = 11,
+  LIST_ENTITIES_BINARY_SENSOR_RESPONSE = 12,
+  LIST_ENTITIES_COVER_RESPONSE = 13,
+  LIST_ENTITIES_FAN_RESPONSE = 14,
+  LIST_ENTITIES_LIGHT_RESPONSE = 15,
+  LIST_ENTITIES_SENSOR_RESPONSE = 16,
+  LIST_ENTITIES_SWITCH_RESPONSE = 17,
+  LIST_ENTITIES_TEXT_SENSOR_RESPONSE = 18,
+  LIST_ENTITIES_SERVICE_RESPONSE = 41,
+  LIST_ENTITIES_CAMERA_RESPONSE = 43,
+  LIST_ENTITIES_CLIMATE_RESPONSE = 46,
+  LIST_ENTITIES_DONE_RESPONSE = 19,
+
+  SUBSCRIBE_STATES_REQUEST = 20,
+  BINARY_SENSOR_STATE_RESPONSE = 21,
+  COVER_STATE_RESPONSE = 22,
+  FAN_STATE_RESPONSE = 23,
+  LIGHT_STATE_RESPONSE = 24,
+  SENSOR_STATE_RESPONSE = 25,
+  SWITCH_STATE_RESPONSE = 26,
+  TEXT_SENSOR_STATE_RESPONSE = 27,
+  CAMERA_IMAGE_RESPONSE = 44,
+  CLIMATE_STATE_RESPONSE = 47,
+
+  SUBSCRIBE_LOGS_REQUEST = 28,
+  SUBSCRIBE_LOGS_RESPONSE = 29,
+
+  COVER_COMMAND_REQUEST = 30,
+  FAN_COMMAND_REQUEST = 31,
+  LIGHT_COMMAND_REQUEST = 32,
+  SWITCH_COMMAND_REQUEST = 33,
+  CAMERA_IMAGE_REQUEST = 45,
+  CLIMATE_COMMAND_REQUEST = 48,
+
+  SUBSCRIBE_SERVICE_CALLS_REQUEST = 34,
+  SERVICE_CALL_RESPONSE = 35,
+  GET_TIME_REQUEST = 36,
+  GET_TIME_RESPONSE = 37,
+
+  SUBSCRIBE_HOME_ASSISTANT_STATES_REQUEST = 38,
+  SUBSCRIBE_HOME_ASSISTANT_STATE_RESPONSE = 39,
+  HOME_ASSISTANT_STATE_RESPONSE = 40,
+
+  EXECUTE_SERVICE_REQUEST = 42,
+};
+
+class APIMessage {
+ public:
+  void decode(const uint8_t *buffer, size_t length);
+  virtual bool decode_varint(uint32_t field_id, uint32_t value);
+  virtual bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len);
+  virtual bool decode_32bit(uint32_t field_id, uint32_t value);
+  virtual APIMessageType message_type() const = 0;
+
+  virtual void encode(APIBuffer &buffer);
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/api_server.h

@@ -0,0 +1,242 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#include "esphome/core/defines.h"
+#include "esphome/core/log.h"
+#include "util.h"
+#include "api_message.h"
+#include "basic_messages.h"
+#include "list_entities.h"
+#include "subscribe_state.h"
+#include "subscribe_logs.h"
+#include "command_messages.h"
+#include "service_call_message.h"
+#include "user_services.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+#include <AsyncTCP.h>
+#endif
+#ifdef ARDUINO_ARCH_ESP8266
+#include <ESPAsyncTCP.h>
+#endif
+
+namespace esphome {
+namespace api {
+
+class APIServer;
+
+class APIConnection {
+ public:
+  APIConnection(AsyncClient *client, APIServer *parent);
+  ~APIConnection();
+
+  void disconnect_client();
+  APIBuffer get_buffer();
+  bool send_buffer(APIMessageType type);
+  bool send_message(APIMessage &msg);
+  bool send_empty_message(APIMessageType type);
+  void loop();
+
+#ifdef USE_BINARY_SENSOR
+  bool send_binary_sensor_state(binary_sensor::BinarySensor *binary_sensor, bool state);
+#endif
+#ifdef USE_COVER
+  bool send_cover_state(cover::Cover *cover);
+#endif
+#ifdef USE_FAN
+  bool send_fan_state(fan::FanState *fan);
+#endif
+#ifdef USE_LIGHT
+  bool send_light_state(light::LightState *light);
+#endif
+#ifdef USE_SENSOR
+  bool send_sensor_state(sensor::Sensor *sensor, float state);
+#endif
+#ifdef USE_SWITCH
+  bool send_switch_state(switch_::Switch *a_switch, bool state);
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool send_text_sensor_state(text_sensor::TextSensor *text_sensor, std::string state);
+#endif
+#ifdef USE_ESP32_CAMERA
+  void send_camera_state(std::shared_ptr<esp32_camera::CameraImage> image);
+#endif
+#ifdef USE_CLIMATE
+  bool send_climate_state(climate::Climate *climate);
+#endif
+  bool send_log_message(int level, const char *tag, const char *line);
+  bool send_disconnect_request();
+  bool send_ping_request();
+  void send_service_call(ServiceCallResponse &call);
+#ifdef USE_HOMEASSISTANT_TIME
+  void send_time_request();
+#endif
+
+ protected:
+  friend APIServer;
+
+  void on_error_(int8_t error);
+  void on_disconnect_();
+  void on_timeout_(uint32_t time);
+  void on_data_(uint8_t *buf, size_t len);
+  void fatal_error_();
+  bool valid_rx_message_type_(uint32_t msg_type);
+  void read_message_(uint32_t size, uint32_t type, uint8_t *msg);
+  void parse_recv_buffer_();
+
+  // request types
+  void on_hello_request_(const HelloRequest &req);
+  void on_connect_request_(const ConnectRequest &req);
+  void on_disconnect_request_(const DisconnectRequest &req);
+  void on_disconnect_response_(const DisconnectResponse &req);
+  void on_ping_request_(const PingRequest &req);
+  void on_ping_response_(const PingResponse &req);
+  void on_device_info_request_(const DeviceInfoRequest &req);
+  void on_list_entities_request_(const ListEntitiesRequest &req);
+  void on_subscribe_states_request_(const SubscribeStatesRequest &req);
+  void on_subscribe_logs_request_(const SubscribeLogsRequest &req);
+#ifdef USE_COVER
+  void on_cover_command_request_(const CoverCommandRequest &req);
+#endif
+#ifdef USE_FAN
+  void on_fan_command_request_(const FanCommandRequest &req);
+#endif
+#ifdef USE_LIGHT
+  void on_light_command_request_(const LightCommandRequest &req);
+#endif
+#ifdef USE_SWITCH
+  void on_switch_command_request_(const SwitchCommandRequest &req);
+#endif
+#ifdef USE_CLIMATE
+  void on_climate_command_request_(const ClimateCommandRequest &req);
+#endif
+  void on_subscribe_service_calls_request_(const SubscribeServiceCallsRequest &req);
+  void on_subscribe_home_assistant_states_request_(const SubscribeHomeAssistantStatesRequest &req);
+  void on_home_assistant_state_response_(const HomeAssistantStateResponse &req);
+  void on_execute_service_(const ExecuteServiceRequest &req);
+#ifdef USE_ESP32_CAMERA
+  void on_camera_image_request_(const CameraImageRequest &req);
+#endif
+
+  enum class ConnectionState {
+    WAITING_FOR_HELLO,
+    WAITING_FOR_CONNECT,
+    CONNECTED,
+  } connection_state_{ConnectionState::WAITING_FOR_HELLO};
+
+  bool remove_{false};
+
+  std::vector<uint8_t> send_buffer_;
+  std::vector<uint8_t> recv_buffer_;
+
+  std::string client_info_;
+#ifdef USE_ESP32_CAMERA
+  esp32_camera::CameraImageReader image_reader_;
+#endif
+
+  bool state_subscription_{false};
+  int log_subscription_{ESPHOME_LOG_LEVEL_NONE};
+  uint32_t last_traffic_;
+  bool sent_ping_{false};
+  bool service_call_subscription_{false};
+  AsyncClient *client_;
+  APIServer *parent_;
+  InitialStateIterator initial_state_iterator_;
+  ListEntitiesIterator list_entities_iterator_;
+};
+
+template<typename... Ts> class HomeAssistantServiceCallAction;
+
+class APIServer : public Component, public Controller {
+ public:
+  APIServer();
+  void setup() override;
+  uint16_t get_port() const;
+  float get_setup_priority() const override;
+  void loop() override;
+  void dump_config() override;
+  void on_shutdown() override;
+  bool check_password(const std::string &password) const;
+  bool uses_password() const;
+  void set_port(uint16_t port);
+  void set_password(const std::string &password);
+  void set_reboot_timeout(uint32_t reboot_timeout);
+  void handle_disconnect(APIConnection *conn);
+#ifdef USE_BINARY_SENSOR
+  void on_binary_sensor_update(binary_sensor::BinarySensor *obj, bool state) override;
+#endif
+#ifdef USE_COVER
+  void on_cover_update(cover::Cover *obj) override;
+#endif
+#ifdef USE_FAN
+  void on_fan_update(fan::FanState *obj) override;
+#endif
+#ifdef USE_LIGHT
+  void on_light_update(light::LightState *obj) override;
+#endif
+#ifdef USE_SENSOR
+  void on_sensor_update(sensor::Sensor *obj, float state) override;
+#endif
+#ifdef USE_SWITCH
+  void on_switch_update(switch_::Switch *obj, bool state) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  void on_text_sensor_update(text_sensor::TextSensor *obj, std::string state) override;
+#endif
+#ifdef USE_CLIMATE
+  void on_climate_update(climate::Climate *obj) override;
+#endif
+  void send_service_call(ServiceCallResponse &call);
+  void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
+#ifdef USE_HOMEASSISTANT_TIME
+  void request_time();
+#endif
+
+  bool is_connected() const;
+
+  struct HomeAssistantStateSubscription {
+    std::string entity_id;
+    std::function<void(std::string)> callback;
+  };
+
+  void subscribe_home_assistant_state(std::string entity_id, std::function<void(std::string)> f);
+  const std::vector<HomeAssistantStateSubscription> &get_state_subs() const;
+  const std::vector<UserServiceDescriptor *> &get_user_services() const { return this->user_services_; }
+
+ protected:
+  AsyncServer server_{0};
+  uint16_t port_{6053};
+  uint32_t reboot_timeout_{300000};
+  uint32_t last_connected_{0};
+  std::vector<APIConnection *> clients_;
+  std::string password_;
+  std::vector<HomeAssistantStateSubscription> state_subs_;
+  std::vector<UserServiceDescriptor *> user_services_;
+};
+
+extern APIServer *global_api_server;
+
+template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts...> {
+ public:
+  explicit HomeAssistantServiceCallAction(APIServer *parent) : parent_(parent) {}
+  void set_service(const std::string &service) { this->resp_.set_service(service); }
+  void set_data(const std::vector<KeyValuePair> &data) { this->resp_.set_data(data); }
+  void set_data_template(const std::vector<KeyValuePair> &data_template) {
+    this->resp_.set_data_template(data_template);
+  }
+  void set_variables(const std::vector<TemplatableKeyValuePair> &variables) { this->resp_.set_variables(variables); }
+  void play(Ts... x) override { this->parent_->send_service_call(this->resp_); }
+
+ protected:
+  APIServer *parent_;
+  ServiceCallResponse resp_;
+};
+
+template<typename... Ts> class APIConnectedCondition : public Condition<Ts...> {
+ public:
+  bool check(Ts... x) override { return global_api_server->is_connected(); }
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/basic_messages.cpp

@@ -0,0 +1,57 @@
+#include "basic_messages.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+// Hello
+bool HelloRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string client_info = 1;
+      this->client_info_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &HelloRequest::get_client_info() const { return this->client_info_; }
+void HelloRequest::set_client_info(const std::string &client_info) { this->client_info_ = client_info; }
+APIMessageType HelloRequest::message_type() const { return APIMessageType::HELLO_REQUEST; }
+
+// Connect
+bool ConnectRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string password = 1;
+      this->password_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &ConnectRequest::get_password() const { return this->password_; }
+void ConnectRequest::set_password(const std::string &password) { this->password_ = password; }
+APIMessageType ConnectRequest::message_type() const { return APIMessageType::CONNECT_REQUEST; }
+
+APIMessageType DeviceInfoRequest::message_type() const { return APIMessageType::DEVICE_INFO_REQUEST; }
+APIMessageType DisconnectRequest::message_type() const { return APIMessageType::DISCONNECT_REQUEST; }
+bool DisconnectRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:  // string reason = 1;
+      this->reason_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+const std::string &DisconnectRequest::get_reason() const { return this->reason_; }
+void DisconnectRequest::set_reason(const std::string &reason) { this->reason_ = reason; }
+void DisconnectRequest::encode(APIBuffer &buffer) {
+  // string reason = 1;
+  buffer.encode_string(1, this->reason_);
+}
+APIMessageType DisconnectResponse::message_type() const { return APIMessageType::DISCONNECT_RESPONSE; }
+APIMessageType PingRequest::message_type() const { return APIMessageType::PING_REQUEST; }
+APIMessageType PingResponse::message_type() const { return APIMessageType::PING_RESPONSE; }
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/basic_messages.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class HelloRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  const std::string &get_client_info() const;
+  void set_client_info(const std::string &client_info);
+  APIMessageType message_type() const override;
+
+ protected:
+  std::string client_info_;
+};
+
+class ConnectRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  const std::string &get_password() const;
+  void set_password(const std::string &password);
+  APIMessageType message_type() const override;
+
+ protected:
+  std::string password_;
+};
+
+class DeviceInfoRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class DisconnectRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  void encode(APIBuffer &buffer) override;
+  APIMessageType message_type() const override;
+  const std::string &get_reason() const;
+  void set_reason(const std::string &reason);
+
+ protected:
+  std::string reason_;
+};
+
+class DisconnectResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class PingRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class PingResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/command_messages.cpp

@@ -0,0 +1,417 @@
+#include "command_messages.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_COVER
+bool CoverCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_legacy_command = 2;
+      this->has_legacy_command_ = value;
+      return true;
+    case 3:
+      // enum LegacyCoverCommand {
+      //   OPEN = 0;
+      //   CLOSE = 1;
+      //   STOP = 2;
+      // }
+      // LegacyCoverCommand legacy_command_ = 3;
+      this->legacy_command_ = static_cast<LegacyCoverCommand>(value);
+      return true;
+    case 4:
+      // bool has_position = 4;
+      this->has_position_ = value;
+      return true;
+    case 6:
+      // bool has_tilt = 6;
+      this->has_tilt_ = value;
+      return true;
+    case 8:
+      // bool stop = 8;
+      this->stop_ = value;
+    default:
+      return false;
+  }
+}
+bool CoverCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float position = 5;
+      this->position_ = as_float(value);
+      return true;
+    case 7:
+      // float tilt = 7;
+      this->tilt_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType CoverCommandRequest::message_type() const { return APIMessageType ::COVER_COMMAND_REQUEST; }
+uint32_t CoverCommandRequest::get_key() const { return this->key_; }
+optional<LegacyCoverCommand> CoverCommandRequest::get_legacy_command() const {
+  if (!this->has_legacy_command_)
+    return {};
+  return this->legacy_command_;
+}
+optional<float> CoverCommandRequest::get_position() const {
+  if (!this->has_position_)
+    return {};
+  return this->position_;
+}
+optional<float> CoverCommandRequest::get_tilt() const {
+  if (!this->has_tilt_)
+    return {};
+  return this->tilt_;
+}
+#endif
+
+#ifdef USE_FAN
+bool FanCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_state = 2;
+      this->has_state_ = value;
+      return true;
+    case 3:
+      // bool state = 3;
+      this->state_ = value;
+      return true;
+    case 4:
+      // bool has_speed = 4;
+      this->has_speed_ = value;
+      return true;
+    case 5:
+      // FanSpeed speed = 5;
+      this->speed_ = static_cast<fan::FanSpeed>(value);
+      return true;
+    case 6:
+      // bool has_oscillating = 6;
+      this->has_oscillating_ = value;
+      return true;
+    case 7:
+      // bool oscillating = 7;
+      this->oscillating_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool FanCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType FanCommandRequest::message_type() const { return APIMessageType::FAN_COMMAND_REQUEST; }
+uint32_t FanCommandRequest::get_key() const { return this->key_; }
+optional<bool> FanCommandRequest::get_state() const {
+  if (!this->has_state_)
+    return {};
+  return this->state_;
+}
+optional<fan::FanSpeed> FanCommandRequest::get_speed() const {
+  if (!this->has_speed_)
+    return {};
+  return this->speed_;
+}
+optional<bool> FanCommandRequest::get_oscillating() const {
+  if (!this->has_oscillating_)
+    return {};
+  return this->oscillating_;
+}
+#endif
+
+#ifdef USE_LIGHT
+bool LightCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_state = 2;
+      this->has_state_ = value;
+      return true;
+    case 3:
+      // bool state = 3;
+      this->state_ = value;
+      return true;
+    case 4:
+      // bool has_brightness = 4;
+      this->has_brightness_ = value;
+      return true;
+    case 6:
+      // bool has_rgb = 6;
+      this->has_rgb_ = value;
+      return true;
+    case 10:
+      // bool has_white = 10;
+      this->has_white_ = value;
+      return true;
+    case 12:
+      // bool has_color_temperature = 12;
+      this->has_color_temperature_ = value;
+      return true;
+    case 14:
+      // bool has_transition_length = 14;
+      this->has_transition_length_ = value;
+      return true;
+    case 15:
+      // uint32 transition_length = 15;
+      this->transition_length_ = value;
+      return true;
+    case 16:
+      // bool has_flash_length = 16;
+      this->has_flash_length_ = value;
+      return true;
+    case 17:
+      // uint32 flash_length = 17;
+      this->flash_length_ = value;
+      return true;
+    case 18:
+      // bool has_effect = 18;
+      this->has_effect_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool LightCommandRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 19:
+      // string effect = 19;
+      this->effect_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+bool LightCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float brightness = 5;
+      this->brightness_ = as_float(value);
+      return true;
+    case 7:
+      // float red = 7;
+      this->red_ = as_float(value);
+      return true;
+    case 8:
+      // float green = 8;
+      this->green_ = as_float(value);
+      return true;
+    case 9:
+      // float blue = 9;
+      this->blue_ = as_float(value);
+      return true;
+    case 11:
+      // float white = 11;
+      this->white_ = as_float(value);
+      return true;
+    case 13:
+      // float color_temperature = 13;
+      this->color_temperature_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType LightCommandRequest::message_type() const { return APIMessageType::LIGHT_COMMAND_REQUEST; }
+uint32_t LightCommandRequest::get_key() const { return this->key_; }
+optional<bool> LightCommandRequest::get_state() const {
+  if (!this->has_state_)
+    return {};
+  return this->state_;
+}
+optional<float> LightCommandRequest::get_brightness() const {
+  if (!this->has_brightness_)
+    return {};
+  return this->brightness_;
+}
+optional<float> LightCommandRequest::get_red() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->red_;
+}
+optional<float> LightCommandRequest::get_green() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->green_;
+}
+optional<float> LightCommandRequest::get_blue() const {
+  if (!this->has_rgb_)
+    return {};
+  return this->blue_;
+}
+optional<float> LightCommandRequest::get_white() const {
+  if (!this->has_white_)
+    return {};
+  return this->white_;
+}
+optional<float> LightCommandRequest::get_color_temperature() const {
+  if (!this->has_color_temperature_)
+    return {};
+  return this->color_temperature_;
+}
+optional<uint32_t> LightCommandRequest::get_transition_length() const {
+  if (!this->has_transition_length_)
+    return {};
+  return this->transition_length_;
+}
+optional<uint32_t> LightCommandRequest::get_flash_length() const {
+  if (!this->has_flash_length_)
+    return {};
+  return this->flash_length_;
+}
+optional<std::string> LightCommandRequest::get_effect() const {
+  if (!this->has_effect_)
+    return {};
+  return this->effect_;
+}
+#endif
+
+#ifdef USE_SWITCH
+bool SwitchCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool state = 2;
+      this->state_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool SwitchCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType SwitchCommandRequest::message_type() const { return APIMessageType::SWITCH_COMMAND_REQUEST; }
+uint32_t SwitchCommandRequest::get_key() const { return this->key_; }
+bool SwitchCommandRequest::get_state() const { return this->state_; }
+#endif
+
+#ifdef USE_ESP32_CAMERA
+bool CameraImageRequest::get_single() const { return this->single_; }
+bool CameraImageRequest::get_stream() const { return this->stream_; }
+bool CameraImageRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // bool single = 1;
+      this->single_ = value;
+      return true;
+    case 2:
+      // bool stream = 2;
+      this->stream_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType CameraImageRequest::message_type() const { return APIMessageType::CAMERA_IMAGE_REQUEST; }
+#endif
+
+#ifdef USE_CLIMATE
+bool ClimateCommandRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 2:
+      // bool has_mode = 2;
+      this->has_mode_ = value;
+      return true;
+    case 3:
+      // ClimateMode mode = 3;
+      this->mode_ = static_cast<climate::ClimateMode>(value);
+      return true;
+    case 4:
+      // bool has_target_temperature = 4;
+      this->has_target_temperature_ = value;
+      return true;
+    case 6:
+      // bool has_target_temperature_low = 6;
+      this->has_target_temperature_low_ = value;
+      return true;
+    case 8:
+      // bool has_target_temperature_high = 8;
+      this->has_target_temperature_high_ = value;
+      return true;
+    case 10:
+      // bool has_away = 10;
+      this->has_away_ = value;
+      return true;
+    case 11:
+      // bool away = 11;
+      this->away_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ClimateCommandRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:
+      // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    case 5:
+      // float target_temperature = 5;
+      this->target_temperature_ = as_float(value);
+      return true;
+    case 7:
+      // float target_temperature_low = 7;
+      this->target_temperature_low_ = as_float(value);
+      return true;
+    case 9:
+      // float target_temperature_high = 9;
+      this->target_temperature_high_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType ClimateCommandRequest::message_type() const { return APIMessageType::CLIMATE_COMMAND_REQUEST; }
+uint32_t ClimateCommandRequest::get_key() const { return this->key_; }
+optional<climate::ClimateMode> ClimateCommandRequest::get_mode() const {
+  if (!this->has_mode_)
+    return {};
+  return this->mode_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature() const {
+  if (!this->has_target_temperature_)
+    return {};
+  return this->target_temperature_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature_low() const {
+  if (!this->has_target_temperature_low_)
+    return {};
+  return this->target_temperature_low_;
+}
+optional<float> ClimateCommandRequest::get_target_temperature_high() const {
+  if (!this->has_target_temperature_high_)
+    return {};
+  return this->target_temperature_high_;
+}
+optional<bool> ClimateCommandRequest::get_away() const {
+  if (!this->has_away_)
+    return {};
+  return this->away_;
+}
+#endif
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/command_messages.h

@@ -0,0 +1,162 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/defines.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_COVER
+enum LegacyCoverCommand {
+  LEGACY_COVER_COMMAND_OPEN = 0,
+  LEGACY_COVER_COMMAND_CLOSE = 1,
+  LEGACY_COVER_COMMAND_STOP = 2,
+};
+
+class CoverCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<LegacyCoverCommand> get_legacy_command() const;
+  optional<float> get_position() const;
+  optional<float> get_tilt() const;
+  bool get_stop() const { return this->stop_; }
+
+ protected:
+  uint32_t key_{0};
+  bool has_legacy_command_{false};
+  LegacyCoverCommand legacy_command_{LEGACY_COVER_COMMAND_OPEN};
+  bool has_position_{false};
+  float position_{0.0f};
+  bool has_tilt_{false};
+  float tilt_{0.0f};
+  bool stop_{false};
+};
+#endif
+
+#ifdef USE_FAN
+class FanCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<bool> get_state() const;
+  optional<fan::FanSpeed> get_speed() const;
+  optional<bool> get_oscillating() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_state_{false};
+  bool state_{false};
+  bool has_speed_{false};
+  fan::FanSpeed speed_{fan::FAN_SPEED_LOW};
+  bool has_oscillating_{false};
+  bool oscillating_{false};
+};
+#endif
+
+#ifdef USE_LIGHT
+class LightCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<bool> get_state() const;
+  optional<float> get_brightness() const;
+  optional<float> get_red() const;
+  optional<float> get_green() const;
+  optional<float> get_blue() const;
+  optional<float> get_white() const;
+  optional<float> get_color_temperature() const;
+  optional<uint32_t> get_transition_length() const;
+  optional<uint32_t> get_flash_length() const;
+  optional<std::string> get_effect() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_state_{false};
+  bool state_{false};
+  bool has_brightness_{false};
+  float brightness_{0.0f};
+  bool has_rgb_{false};
+  float red_{0.0f};
+  float green_{0.0f};
+  float blue_{0.0f};
+  bool has_white_{false};
+  float white_{0.0f};
+  bool has_color_temperature_{false};
+  float color_temperature_{0.0f};
+  bool has_transition_length_{false};
+  uint32_t transition_length_{0};
+  bool has_flash_length_{false};
+  uint32_t flash_length_{0};
+  bool has_effect_{false};
+  std::string effect_{};
+};
+#endif
+
+#ifdef USE_SWITCH
+class SwitchCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  bool get_state() const;
+
+ protected:
+  uint32_t key_{0};
+  bool state_{false};
+};
+#endif
+
+#ifdef USE_ESP32_CAMERA
+class CameraImageRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool get_single() const;
+  bool get_stream() const;
+  APIMessageType message_type() const override;
+
+ protected:
+  bool single_{false};
+  bool stream_{false};
+};
+#endif
+
+#ifdef USE_CLIMATE
+class ClimateCommandRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_key() const;
+  optional<climate::ClimateMode> get_mode() const;
+  optional<float> get_target_temperature() const;
+  optional<float> get_target_temperature_low() const;
+  optional<float> get_target_temperature_high() const;
+  optional<bool> get_away() const;
+
+ protected:
+  uint32_t key_{0};
+  bool has_mode_{false};
+  climate::ClimateMode mode_{climate::CLIMATE_MODE_OFF};
+  bool has_target_temperature_{false};
+  float target_temperature_{0.0f};
+  bool has_target_temperature_low_{false};
+  float target_temperature_low_{0.0f};
+  bool has_target_temperature_high_{false};
+  float target_temperature_high_{0.0f};
+  bool has_away_{false};
+  bool away_{false};
+};
+#endif
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/list_entities.cpp

@@ -0,0 +1,190 @@
+#include "list_entities.h"
+#include "esphome/core/util.h"
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace api {
+
+std::string get_default_unique_id(const std::string &component_type, Nameable *nameable) {
+  return App.get_name() + component_type + nameable->get_object_id();
+}
+
+#ifdef USE_BINARY_SENSOR
+bool ListEntitiesIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(binary_sensor);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("binary_sensor", binary_sensor));
+  // string device_class = 5;
+  buffer.encode_string(5, binary_sensor->get_device_class());
+  // bool is_status_binary_sensor = 6;
+  buffer.encode_bool(6, binary_sensor->is_status_binary_sensor());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_BINARY_SENSOR_RESPONSE);
+}
+#endif
+#ifdef USE_COVER
+bool ListEntitiesIterator::on_cover(cover::Cover *cover) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(cover);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("cover", cover));
+  auto traits = cover->get_traits();
+
+  // bool assumed_state = 5;
+  buffer.encode_bool(5, traits.get_is_assumed_state());
+  // bool supports_position = 6;
+  buffer.encode_bool(6, traits.get_supports_position());
+  // bool supports_tilt = 7;
+  buffer.encode_bool(7, traits.get_supports_tilt());
+  // string device_class = 8;
+  buffer.encode_string(8, cover->get_device_class());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_COVER_RESPONSE);
+}
+#endif
+#ifdef USE_FAN
+bool ListEntitiesIterator::on_fan(fan::FanState *fan) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(fan);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("fan", fan));
+  // bool supports_oscillation = 5;
+  buffer.encode_bool(5, fan->get_traits().supports_oscillation());
+  // bool supports_speed = 6;
+  buffer.encode_bool(6, fan->get_traits().supports_speed());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_FAN_RESPONSE);
+}
+#endif
+#ifdef USE_LIGHT
+bool ListEntitiesIterator::on_light(light::LightState *light) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(light);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("light", light));
+  // bool supports_brightness = 5;
+  auto traits = light->get_traits();
+  buffer.encode_bool(5, traits.get_supports_brightness());
+  // bool supports_rgb = 6;
+  buffer.encode_bool(6, traits.get_supports_rgb());
+  // bool supports_white_value = 7;
+  buffer.encode_bool(7, traits.get_supports_rgb_white_value());
+  // bool supports_color_temperature = 8;
+  buffer.encode_bool(8, traits.get_supports_color_temperature());
+  if (traits.get_supports_color_temperature()) {
+    // float min_mireds = 9;
+    buffer.encode_float(9, traits.get_min_mireds());
+    // float max_mireds = 10;
+    buffer.encode_float(10, traits.get_max_mireds());
+  }
+  // repeated string effects = 11;
+  if (light->supports_effects()) {
+    buffer.encode_string(11, "None");
+    for (auto *effect : light->get_effects()) {
+      buffer.encode_string(11, effect->get_name());
+    }
+  }
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_LIGHT_RESPONSE);
+}
+#endif
+#ifdef USE_SENSOR
+bool ListEntitiesIterator::on_sensor(sensor::Sensor *sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(sensor);
+  // string unique_id = 4;
+  std::string unique_id = sensor->unique_id();
+  if (unique_id.empty())
+    unique_id = get_default_unique_id("sensor", sensor);
+  buffer.encode_string(4, unique_id);
+  // string icon = 5;
+  buffer.encode_string(5, sensor->get_icon());
+  // string unit_of_measurement = 6;
+  buffer.encode_string(6, sensor->get_unit_of_measurement());
+  // int32 accuracy_decimals = 7;
+  buffer.encode_int32(7, sensor->get_accuracy_decimals());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SENSOR_RESPONSE);
+}
+#endif
+#ifdef USE_SWITCH
+bool ListEntitiesIterator::on_switch(switch_::Switch *a_switch) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(a_switch);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("switch", a_switch));
+  // string icon = 5;
+  buffer.encode_string(5, a_switch->get_icon());
+  // bool assumed_state = 6;
+  buffer.encode_bool(6, a_switch->assumed_state());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SWITCH_RESPONSE);
+}
+#endif
+#ifdef USE_TEXT_SENSOR
+bool ListEntitiesIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(text_sensor);
+  // string unique_id = 4;
+  std::string unique_id = text_sensor->unique_id();
+  if (unique_id.empty())
+    unique_id = get_default_unique_id("text_sensor", text_sensor);
+  buffer.encode_string(4, unique_id);
+  // string icon = 5;
+  buffer.encode_string(5, text_sensor->get_icon());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_TEXT_SENSOR_RESPONSE);
+}
+#endif
+
+bool ListEntitiesIterator::on_end() {
+  return this->client_->send_empty_message(APIMessageType::LIST_ENTITIES_DONE_RESPONSE);
+}
+ListEntitiesIterator::ListEntitiesIterator(APIServer *server, APIConnection *client)
+    : ComponentIterator(server), client_(client) {}
+bool ListEntitiesIterator::on_service(UserServiceDescriptor *service) {
+  auto buffer = this->client_->get_buffer();
+  service->encode_list_service_response(buffer);
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_SERVICE_RESPONSE);
+}
+
+#ifdef USE_ESP32_CAMERA
+bool ListEntitiesIterator::on_camera(esp32_camera::ESP32Camera *camera) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(camera);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("camera", camera));
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_CAMERA_RESPONSE);
+}
+#endif
+
+#ifdef USE_CLIMATE
+bool ListEntitiesIterator::on_climate(climate::Climate *climate) {
+  auto buffer = this->client_->get_buffer();
+  buffer.encode_nameable(climate);
+  // string unique_id = 4;
+  buffer.encode_string(4, get_default_unique_id("climate", climate));
+
+  auto traits = climate->get_traits();
+  // bool supports_current_temperature = 5;
+  buffer.encode_bool(5, traits.get_supports_current_temperature());
+  // bool supports_two_point_target_temperature = 6;
+  buffer.encode_bool(6, traits.get_supports_two_point_target_temperature());
+  // repeated ClimateMode supported_modes = 7;
+  for (auto mode : {climate::CLIMATE_MODE_AUTO, climate::CLIMATE_MODE_OFF, climate::CLIMATE_MODE_COOL,
+                    climate::CLIMATE_MODE_HEAT}) {
+    if (traits.supports_mode(mode))
+      buffer.encode_uint32(7, mode, true);
+  }
+
+  // float visual_min_temperature = 8;
+  buffer.encode_float(8, traits.get_visual_min_temperature());
+  // float visual_max_temperature = 9;
+  buffer.encode_float(9, traits.get_visual_max_temperature());
+  // float visual_temperature_step = 10;
+  buffer.encode_float(10, traits.get_visual_temperature_step());
+  // bool supports_away = 11;
+  buffer.encode_bool(11, traits.get_supports_away());
+  return this->client_->send_buffer(APIMessageType::LIST_ENTITIES_CLIMATE_RESPONSE);
+}
+#endif
+
+APIMessageType ListEntitiesRequest::message_type() const { return APIMessageType::LIST_ENTITIES_REQUEST; }
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/list_entities.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/defines.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class ListEntitiesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class APIConnection;
+
+class ListEntitiesIterator : public ComponentIterator {
+ public:
+  ListEntitiesIterator(APIServer *server, APIConnection *client);
+#ifdef USE_BINARY_SENSOR
+  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+#endif
+#ifdef USE_COVER
+  bool on_cover(cover::Cover *cover) override;
+#endif
+#ifdef USE_FAN
+  bool on_fan(fan::FanState *fan) override;
+#endif
+#ifdef USE_LIGHT
+  bool on_light(light::LightState *light) override;
+#endif
+#ifdef USE_SENSOR
+  bool on_sensor(sensor::Sensor *sensor) override;
+#endif
+#ifdef USE_SWITCH
+  bool on_switch(switch_::Switch *a_switch) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+#endif
+  bool on_service(UserServiceDescriptor *service) override;
+#ifdef USE_ESP32_CAMERA
+  bool on_camera(esp32_camera::ESP32Camera *camera) override;
+#endif
+#ifdef USE_CLIMATE
+  bool on_climate(climate::Climate *climate) override;
+#endif
+  bool on_end() override;
+
+ protected:
+  APIConnection *client_;
+};
+
+}  // namespace api
+}  // namespace esphome
+
+#include "api_server.h"

esphome/components/api/service_call_message.cpp

@@ -0,0 +1,49 @@
+#include "service_call_message.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+APIMessageType SubscribeServiceCallsRequest::message_type() const {
+  return APIMessageType::SUBSCRIBE_SERVICE_CALLS_REQUEST;
+}
+
+APIMessageType ServiceCallResponse::message_type() const { return APIMessageType::SERVICE_CALL_RESPONSE; }
+void ServiceCallResponse::encode(APIBuffer &buffer) {
+  // string service = 1;
+  buffer.encode_string(1, this->service_);
+  // map<string, string> data = 2;
+  for (auto &it : this->data_) {
+    auto nested = buffer.begin_nested(2);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value);
+    buffer.end_nested(nested);
+  }
+  // map<string, string> data_template = 3;
+  for (auto &it : this->data_template_) {
+    auto nested = buffer.begin_nested(3);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value);
+    buffer.end_nested(nested);
+  }
+  // map<string, string> variables = 4;
+  for (auto &it : this->variables_) {
+    auto nested = buffer.begin_nested(4);
+    buffer.encode_string(1, it.key);
+    buffer.encode_string(2, it.value());
+    buffer.end_nested(nested);
+  }
+}
+void ServiceCallResponse::set_service(const std::string &service) { this->service_ = service; }
+void ServiceCallResponse::set_data(const std::vector<KeyValuePair> &data) { this->data_ = data; }
+void ServiceCallResponse::set_data_template(const std::vector<KeyValuePair> &data_template) {
+  this->data_template_ = data_template;
+}
+void ServiceCallResponse::set_variables(const std::vector<TemplatableKeyValuePair> &variables) {
+  this->variables_ = variables;
+}
+
+KeyValuePair::KeyValuePair(const std::string &key, const std::string &value) : key(key), value(value) {}
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/service_call_message.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "esphome/core/helpers.h"
+#include "esphome/core/automation.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeServiceCallsRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class KeyValuePair {
+ public:
+  KeyValuePair(const std::string &key, const std::string &value);
+
+  std::string key;
+  std::string value;
+};
+
+class TemplatableKeyValuePair {
+ public:
+  template<typename T> TemplatableKeyValuePair(std::string key, T func);
+
+  std::string key;
+  std::function<std::string()> value;
+};
+template<typename T> TemplatableKeyValuePair::TemplatableKeyValuePair(std::string key, T func) : key(key) {
+  this->value = [func]() -> std::string { return to_string(func()); };
+}
+
+class ServiceCallResponse : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+
+  void encode(APIBuffer &buffer) override;
+
+  void set_service(const std::string &service);
+  void set_data(const std::vector<KeyValuePair> &data);
+  void set_data_template(const std::vector<KeyValuePair> &data_template);
+  void set_variables(const std::vector<TemplatableKeyValuePair> &variables);
+
+ protected:
+  std::string service_;
+  std::vector<KeyValuePair> data_;
+  std::vector<KeyValuePair> data_template_;
+  std::vector<TemplatableKeyValuePair> variables_;
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/subscribe_logs.cpp

@@ -0,0 +1,26 @@
+#include "subscribe_logs.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+APIMessageType SubscribeLogsRequest::message_type() const { return APIMessageType::SUBSCRIBE_LOGS_REQUEST; }
+bool SubscribeLogsRequest::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // LogLevel level = 1;
+      this->level_ = value;
+      return true;
+    case 2:  // bool dump_config = 2;
+      this->dump_config_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+uint32_t SubscribeLogsRequest::get_level() const { return this->level_; }
+void SubscribeLogsRequest::set_level(uint32_t level) { this->level_ = level; }
+bool SubscribeLogsRequest::get_dump_config() const { return this->dump_config_; }
+void SubscribeLogsRequest::set_dump_config(bool dump_config) { this->dump_config_ = dump_config; }
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/subscribe_logs.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeLogsRequest : public APIMessage {
+ public:
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+  uint32_t get_level() const;
+  void set_level(uint32_t level);
+  bool get_dump_config() const;
+  void set_dump_config(bool dump_config);
+
+ protected:
+  uint32_t level_{6};
+  bool dump_config_{false};
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/subscribe_state.cpp

@@ -0,0 +1,77 @@
+#include "subscribe_state.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+#ifdef USE_BINARY_SENSOR
+bool InitialStateIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
+  if (!binary_sensor->has_state())
+    return true;
+
+  return this->client_->send_binary_sensor_state(binary_sensor, binary_sensor->state);
+}
+#endif
+#ifdef USE_COVER
+bool InitialStateIterator::on_cover(cover::Cover *cover) { return this->client_->send_cover_state(cover); }
+#endif
+#ifdef USE_FAN
+bool InitialStateIterator::on_fan(fan::FanState *fan) { return this->client_->send_fan_state(fan); }
+#endif
+#ifdef USE_LIGHT
+bool InitialStateIterator::on_light(light::LightState *light) { return this->client_->send_light_state(light); }
+#endif
+#ifdef USE_SENSOR
+bool InitialStateIterator::on_sensor(sensor::Sensor *sensor) {
+  if (!sensor->has_state())
+    return true;
+
+  return this->client_->send_sensor_state(sensor, sensor->state);
+}
+#endif
+#ifdef USE_SWITCH
+bool InitialStateIterator::on_switch(switch_::Switch *a_switch) {
+  return this->client_->send_switch_state(a_switch, a_switch->state);
+}
+#endif
+#ifdef USE_TEXT_SENSOR
+bool InitialStateIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
+  if (!text_sensor->has_state())
+    return true;
+
+  return this->client_->send_text_sensor_state(text_sensor, text_sensor->state);
+}
+#endif
+#ifdef USE_CLIMATE
+bool InitialStateIterator::on_climate(climate::Climate *climate) { return this->client_->send_climate_state(climate); }
+#endif
+InitialStateIterator::InitialStateIterator(APIServer *server, APIConnection *client)
+    : ComponentIterator(server), client_(client) {}
+
+APIMessageType SubscribeStatesRequest::message_type() const { return APIMessageType::SUBSCRIBE_STATES_REQUEST; }
+
+bool HomeAssistantStateResponse::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 1:
+      // string entity_id = 1;
+      this->entity_id_ = as_string(value, len);
+      return true;
+    case 2:
+      // string state = 2;
+      this->state_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+APIMessageType HomeAssistantStateResponse::message_type() const {
+  return APIMessageType::HOME_ASSISTANT_STATE_RESPONSE;
+}
+const std::string &HomeAssistantStateResponse::get_entity_id() const { return this->entity_id_; }
+const std::string &HomeAssistantStateResponse::get_state() const { return this->state_; }
+APIMessageType SubscribeHomeAssistantStatesRequest::message_type() const {
+  return APIMessageType::SUBSCRIBE_HOME_ASSISTANT_STATES_REQUEST;
+}
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/subscribe_state.h

@@ -0,0 +1,70 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#include "esphome/core/defines.h"
+#include "util.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+class SubscribeStatesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class APIConnection;
+
+class InitialStateIterator : public ComponentIterator {
+ public:
+  InitialStateIterator(APIServer *server, APIConnection *client);
+#ifdef USE_BINARY_SENSOR
+  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+#endif
+#ifdef USE_COVER
+  bool on_cover(cover::Cover *cover) override;
+#endif
+#ifdef USE_FAN
+  bool on_fan(fan::FanState *fan) override;
+#endif
+#ifdef USE_LIGHT
+  bool on_light(light::LightState *light) override;
+#endif
+#ifdef USE_SENSOR
+  bool on_sensor(sensor::Sensor *sensor) override;
+#endif
+#ifdef USE_SWITCH
+  bool on_switch(switch_::Switch *a_switch) override;
+#endif
+#ifdef USE_TEXT_SENSOR
+  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+#endif
+#ifdef USE_CLIMATE
+  bool on_climate(climate::Climate *climate) override;
+#endif
+ protected:
+  APIConnection *client_;
+};
+
+class SubscribeHomeAssistantStatesRequest : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+};
+
+class HomeAssistantStateResponse : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  APIMessageType message_type() const override;
+  const std::string &get_entity_id() const;
+  const std::string &get_state() const;
+
+ protected:
+  std::string entity_id_;
+  std::string state_;
+};
+
+}  // namespace api
+}  // namespace esphome
+
+#include "api_server.h"

esphome/components/api/user_services.cpp

@@ -0,0 +1,74 @@
+#include "user_services.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace api {
+
+template<> bool ExecuteServiceArgument::get_value<bool>() { return this->value_bool_; }
+template<> int ExecuteServiceArgument::get_value<int>() { return this->value_int_; }
+template<> float ExecuteServiceArgument::get_value<float>() { return this->value_float_; }
+template<> std::string ExecuteServiceArgument::get_value<std::string>() { return this->value_string_; }
+
+APIMessageType ExecuteServiceArgument::message_type() const { return APIMessageType::EXECUTE_SERVICE_REQUEST; }
+bool ExecuteServiceArgument::decode_varint(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // bool bool_ = 1;
+      this->value_bool_ = value;
+      return true;
+    case 2:  // int32 int_ = 2;
+      this->value_int_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceArgument::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 3:  // float float_ = 3;
+      this->value_float_ = as_float(value);
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceArgument::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 4:  // string string_ = 4;
+      this->value_string_ = as_string(value, len);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool ExecuteServiceRequest::decode_32bit(uint32_t field_id, uint32_t value) {
+  switch (field_id) {
+    case 1:  // fixed32 key = 1;
+      this->key_ = value;
+      return true;
+    default:
+      return false;
+  }
+}
+bool ExecuteServiceRequest::decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) {
+  switch (field_id) {
+    case 2: {  // repeated ExecuteServiceArgument args = 2;
+      ExecuteServiceArgument arg;
+      arg.decode(value, len);
+      this->args_.push_back(arg);
+      return true;
+    }
+    default:
+      return false;
+  }
+}
+APIMessageType ExecuteServiceRequest::message_type() const { return APIMessageType::EXECUTE_SERVICE_REQUEST; }
+const std::vector<ExecuteServiceArgument> &ExecuteServiceRequest::get_args() const { return this->args_; }
+uint32_t ExecuteServiceRequest::get_key() const { return this->key_; }
+
+ServiceTypeArgument::ServiceTypeArgument(const std::string &name, ServiceArgType type) : name_(name), type_(type) {}
+const std::string &ServiceTypeArgument::get_name() const { return this->name_; }
+ServiceArgType ServiceTypeArgument::get_type() const { return this->type_; }
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/user_services.h

@@ -0,0 +1,125 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "api_message.h"
+
+namespace esphome {
+namespace api {
+
+enum ServiceArgType {
+  SERVICE_ARG_TYPE_BOOL = 0,
+  SERVICE_ARG_TYPE_INT = 1,
+  SERVICE_ARG_TYPE_FLOAT = 2,
+  SERVICE_ARG_TYPE_STRING = 3,
+};
+
+class ServiceTypeArgument {
+ public:
+  ServiceTypeArgument(const std::string &name, ServiceArgType type);
+  const std::string &get_name() const;
+  ServiceArgType get_type() const;
+
+ protected:
+  std::string name_;
+  ServiceArgType type_;
+};
+
+class ExecuteServiceArgument : public APIMessage {
+ public:
+  APIMessageType message_type() const override;
+  template<typename T> T get_value();
+
+  bool decode_varint(uint32_t field_id, uint32_t value) override;
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+
+ protected:
+  bool value_bool_{false};
+  int value_int_{0};
+  float value_float_{0.0f};
+  std::string value_string_{};
+};
+
+class ExecuteServiceRequest : public APIMessage {
+ public:
+  bool decode_length_delimited(uint32_t field_id, const uint8_t *value, size_t len) override;
+  bool decode_32bit(uint32_t field_id, uint32_t value) override;
+  APIMessageType message_type() const override;
+
+  uint32_t get_key() const;
+  const std::vector<ExecuteServiceArgument> &get_args() const;
+
+ protected:
+  uint32_t key_;
+  std::vector<ExecuteServiceArgument> args_;
+};
+
+class UserServiceDescriptor {
+ public:
+  virtual void encode_list_service_response(APIBuffer &buffer) = 0;
+
+  virtual bool execute_service(const ExecuteServiceRequest &req) = 0;
+};
+
+template<typename... Ts> class UserService : public UserServiceDescriptor, public Trigger<Ts...> {
+ public:
+  UserService(const std::string &name, const std::array<ServiceTypeArgument, sizeof...(Ts)> &args);
+
+  void encode_list_service_response(APIBuffer &buffer) override;
+
+  bool execute_service(const ExecuteServiceRequest &req) override;
+
+ protected:
+  template<int... S> void execute_(std::vector<ExecuteServiceArgument> args, seq<S...>);
+
+  std::string name_;
+  uint32_t key_{0};
+  std::array<ServiceTypeArgument, sizeof...(Ts)> args_;
+};
+
+template<typename... Ts>
+template<int... S>
+void UserService<Ts...>::execute_(std::vector<ExecuteServiceArgument> args, seq<S...>) {
+  this->trigger((args[S].get_value<Ts>())...);
+}
+template<typename... Ts> void UserService<Ts...>::encode_list_service_response(APIBuffer &buffer) {
+  // string name = 1;
+  buffer.encode_string(1, this->name_);
+  // fixed32 key = 2;
+  buffer.encode_fixed32(2, this->key_);
+
+  // repeated ListServicesArgument args = 3;
+  for (auto &arg : this->args_) {
+    auto nested = buffer.begin_nested(3);
+    // string name = 1;
+    buffer.encode_string(1, arg.get_name());
+    // Type type = 2;
+    buffer.encode_int32(2, arg.get_type());
+    buffer.end_nested(nested);
+  }
+}
+template<typename... Ts> bool UserService<Ts...>::execute_service(const ExecuteServiceRequest &req) {
+  if (req.get_key() != this->key_)
+    return false;
+
+  if (req.get_args().size() != this->args_.size()) {
+    return false;
+  }
+
+  this->execute_(req.get_args(), typename gens<sizeof...(Ts)>::type());
+  return true;
+}
+template<typename... Ts>
+UserService<Ts...>::UserService(const std::string &name, const std::array<ServiceTypeArgument, sizeof...(Ts)> &args)
+    : name_(name), args_(args) {
+  this->key_ = fnv1_hash(this->name_);
+}
+
+template<> bool ExecuteServiceArgument::get_value<bool>();
+template<> int ExecuteServiceArgument::get_value<int>();
+template<> float ExecuteServiceArgument::get_value<float>();
+template<> std::string ExecuteServiceArgument::get_value<std::string>();
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/util.cpp

@@ -0,0 +1,353 @@
+#include "util.h"
+#include "api_server.h"
+#include "user_services.h"
+#include "esphome/core/log.h"
+#include "esphome/core/application.h"
+
+namespace esphome {
+namespace api {
+
+APIBuffer::APIBuffer(std::vector<uint8_t> *buffer) : buffer_(buffer) {}
+size_t APIBuffer::get_length() const { return this->buffer_->size(); }
+void APIBuffer::write(uint8_t value) { this->buffer_->push_back(value); }
+void APIBuffer::encode_uint32(uint32_t field, uint32_t value, bool force) {
+  if (value == 0 && !force)
+    return;
+
+  this->encode_field_raw(field, 0);
+  this->encode_varint_raw(value);
+}
+void APIBuffer::encode_int32(uint32_t field, int32_t value, bool force) {
+  this->encode_uint32(field, static_cast<uint32_t>(value), force);
+}
+void APIBuffer::encode_bool(uint32_t field, bool value, bool force) {
+  if (!value && !force)
+    return;
+
+  this->encode_field_raw(field, 0);
+  this->write(0x01);
+}
+void APIBuffer::encode_string(uint32_t field, const std::string &value) {
+  this->encode_string(field, value.data(), value.size());
+}
+void APIBuffer::encode_bytes(uint32_t field, const uint8_t *data, size_t len) {
+  this->encode_string(field, reinterpret_cast<const char *>(data), len);
+}
+void APIBuffer::encode_string(uint32_t field, const char *string, size_t len) {
+  if (len == 0)
+    return;
+
+  this->encode_field_raw(field, 2);
+  this->encode_varint_raw(len);
+  const uint8_t *data = reinterpret_cast<const uint8_t *>(string);
+  for (size_t i = 0; i < len; i++) {
+    this->write(data[i]);
+  }
+}
+void APIBuffer::encode_fixed32(uint32_t field, uint32_t value, bool force) {
+  if (value == 0 && !force)
+    return;
+
+  this->encode_field_raw(field, 5);
+  this->write((value >> 0) & 0xFF);
+  this->write((value >> 8) & 0xFF);
+  this->write((value >> 16) & 0xFF);
+  this->write((value >> 24) & 0xFF);
+}
+void APIBuffer::encode_float(uint32_t field, float value, bool force) {
+  if (value == 0.0f && !force)
+    return;
+
+  union {
+    float value_f;
+    uint32_t value_raw;
+  } val;
+  val.value_f = value;
+  this->encode_fixed32(field, val.value_raw);
+}
+void APIBuffer::encode_field_raw(uint32_t field, uint32_t type) {
+  uint32_t val = (field << 3) | (type & 0b111);
+  this->encode_varint_raw(val);
+}
+void APIBuffer::encode_varint_raw(uint32_t value) {
+  if (value <= 0x7F) {
+    this->write(value);
+    return;
+  }
+
+  while (value) {
+    uint8_t temp = value & 0x7F;
+    value >>= 7;
+    if (value) {
+      this->write(temp | 0x80);
+    } else {
+      this->write(temp);
+    }
+  }
+}
+void APIBuffer::encode_sint32(uint32_t field, int32_t value, bool force) {
+  if (value < 0)
+    this->encode_uint32(field, ~(uint32_t(value) << 1), force);
+  else
+    this->encode_uint32(field, uint32_t(value) << 1, force);
+}
+void APIBuffer::encode_nameable(Nameable *nameable) {
+  // string object_id = 1;
+  this->encode_string(1, nameable->get_object_id());
+  // fixed32 key = 2;
+  this->encode_fixed32(2, nameable->get_object_id_hash());
+  // string name = 3;
+  this->encode_string(3, nameable->get_name());
+}
+size_t APIBuffer::begin_nested(uint32_t field) {
+  this->encode_field_raw(field, 2);
+  return this->buffer_->size();
+}
+void APIBuffer::end_nested(size_t begin_index) {
+  const uint32_t nested_length = this->buffer_->size() - begin_index;
+  // add varint
+  std::vector<uint8_t> var;
+  uint32_t val = nested_length;
+  if (val <= 0x7F) {
+    var.push_back(val);
+  } else {
+    while (val) {
+      uint8_t temp = val & 0x7F;
+      val >>= 7;
+      if (val) {
+        var.push_back(temp | 0x80);
+      } else {
+        var.push_back(temp);
+      }
+    }
+  }
+  this->buffer_->insert(this->buffer_->begin() + begin_index, var.begin(), var.end());
+}
+
+optional<uint32_t> proto_decode_varuint32(const uint8_t *buf, size_t len, uint32_t *consumed) {
+  if (len == 0)
+    return {};
+
+  uint32_t result = 0;
+  uint8_t bitpos = 0;
+
+  for (uint32_t i = 0; i < len; i++) {
+    uint8_t val = buf[i];
+    result |= uint32_t(val & 0x7F) << bitpos;
+    bitpos += 7;
+    if ((val & 0x80) == 0) {
+      if (consumed != nullptr) {
+        *consumed = i + 1;
+      }
+      return result;
+    }
+  }
+
+  return {};
+}
+
+std::string as_string(const uint8_t *value, size_t len) {
+  return std::string(reinterpret_cast<const char *>(value), len);
+}
+
+int32_t as_sint32(uint32_t val) {
+  if (val & 1)
+    return uint32_t(~(val >> 1));
+  else
+    return uint32_t(val >> 1);
+}
+
+float as_float(uint32_t val) {
+  static_assert(sizeof(uint32_t) == sizeof(float), "float must be 32bit long");
+  union {
+    uint32_t raw;
+    float value;
+  } x;
+  x.raw = val;
+  return x.value;
+}
+
+ComponentIterator::ComponentIterator(APIServer *server) : server_(server) {}
+void ComponentIterator::begin() {
+  this->state_ = IteratorState::BEGIN;
+  this->at_ = 0;
+}
+void ComponentIterator::advance() {
+  bool advance_platform = false;
+  bool success = true;
+  switch (this->state_) {
+    case IteratorState::NONE:
+      // not started
+      return;
+    case IteratorState::BEGIN:
+      if (this->on_begin()) {
+        advance_platform = true;
+      } else {
+        return;
+      }
+      break;
+#ifdef USE_BINARY_SENSOR
+    case IteratorState::BINARY_SENSOR:
+      if (this->at_ >= App.get_binary_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *binary_sensor = App.get_binary_sensors()[this->at_];
+        if (binary_sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_binary_sensor(binary_sensor);
+        }
+      }
+      break;
+#endif
+#ifdef USE_COVER
+    case IteratorState::COVER:
+      if (this->at_ >= App.get_covers().size()) {
+        advance_platform = true;
+      } else {
+        auto *cover = App.get_covers()[this->at_];
+        if (cover->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_cover(cover);
+        }
+      }
+      break;
+#endif
+#ifdef USE_FAN
+    case IteratorState::FAN:
+      if (this->at_ >= App.get_fans().size()) {
+        advance_platform = true;
+      } else {
+        auto *fan = App.get_fans()[this->at_];
+        if (fan->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_fan(fan);
+        }
+      }
+      break;
+#endif
+#ifdef USE_LIGHT
+    case IteratorState::LIGHT:
+      if (this->at_ >= App.get_lights().size()) {
+        advance_platform = true;
+      } else {
+        auto *light = App.get_lights()[this->at_];
+        if (light->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_light(light);
+        }
+      }
+      break;
+#endif
+#ifdef USE_SENSOR
+    case IteratorState::SENSOR:
+      if (this->at_ >= App.get_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *sensor = App.get_sensors()[this->at_];
+        if (sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_sensor(sensor);
+        }
+      }
+      break;
+#endif
+#ifdef USE_SWITCH
+    case IteratorState::SWITCH:
+      if (this->at_ >= App.get_switches().size()) {
+        advance_platform = true;
+      } else {
+        auto *a_switch = App.get_switches()[this->at_];
+        if (a_switch->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_switch(a_switch);
+        }
+      }
+      break;
+#endif
+#ifdef USE_TEXT_SENSOR
+    case IteratorState::TEXT_SENSOR:
+      if (this->at_ >= App.get_text_sensors().size()) {
+        advance_platform = true;
+      } else {
+        auto *text_sensor = App.get_text_sensors()[this->at_];
+        if (text_sensor->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_text_sensor(text_sensor);
+        }
+      }
+      break;
+#endif
+    case IteratorState ::SERVICE:
+      if (this->at_ >= this->server_->get_user_services().size()) {
+        advance_platform = true;
+      } else {
+        auto *service = this->server_->get_user_services()[this->at_];
+        success = this->on_service(service);
+      }
+      break;
+#ifdef USE_ESP32_CAMERA
+    case IteratorState::CAMERA:
+      if (esp32_camera::global_esp32_camera == nullptr) {
+        advance_platform = true;
+      } else {
+        if (esp32_camera::global_esp32_camera->is_internal()) {
+          advance_platform = success = true;
+          break;
+        } else {
+          advance_platform = success = this->on_camera(esp32_camera::global_esp32_camera);
+        }
+      }
+      break;
+#endif
+#ifdef USE_CLIMATE
+    case IteratorState::CLIMATE:
+      if (this->at_ >= App.get_climates().size()) {
+        advance_platform = true;
+      } else {
+        auto *climate = App.get_climates()[this->at_];
+        if (climate->is_internal()) {
+          success = true;
+          break;
+        } else {
+          success = this->on_climate(climate);
+        }
+      }
+      break;
+#endif
+    case IteratorState::MAX:
+      if (this->on_end()) {
+        this->state_ = IteratorState::NONE;
+      }
+      return;
+  }
+
+  if (advance_platform) {
+    this->state_ = static_cast<IteratorState>(static_cast<uint32_t>(this->state_) + 1);
+    this->at_ = 0;
+  } else if (success) {
+    this->at_++;
+  }
+}
+bool ComponentIterator::on_end() { return true; }
+bool ComponentIterator::on_begin() { return true; }
+bool ComponentIterator::on_service(UserServiceDescriptor *service) { return true; }
+#ifdef USE_ESP32_CAMERA
+bool ComponentIterator::on_camera(esp32_camera::ESP32Camera *camera) { return true; }
+#endif
+
+}  // namespace api
+}  // namespace esphome

esphome/components/api/util.h

@@ -0,0 +1,127 @@
+#pragma once
+
+#include "esphome/core/helpers.h"
+#include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#ifdef USE_ESP32_CAMERA
+#include "esphome/components/esp32_camera/esp32_camera.h"
+#endif
+
+namespace esphome {
+namespace api {
+
+class APIBuffer {
+ public:
+  APIBuffer(std::vector<uint8_t> *buffer);
+
+  size_t get_length() const;
+  void write(uint8_t value);
+
+  void encode_int32(uint32_t field, int32_t value, bool force = false);
+  void encode_uint32(uint32_t field, uint32_t value, bool force = false);
+  void encode_sint32(uint32_t field, int32_t value, bool force = false);
+  void encode_bool(uint32_t field, bool value, bool force = false);
+  void encode_string(uint32_t field, const std::string &value);
+  void encode_string(uint32_t field, const char *string, size_t len);
+  void encode_bytes(uint32_t field, const uint8_t *data, size_t len);
+  void encode_fixed32(uint32_t field, uint32_t value, bool force = false);
+  void encode_float(uint32_t field, float value, bool force = false);
+  void encode_nameable(Nameable *nameable);
+
+  size_t begin_nested(uint32_t field);
+  void end_nested(size_t begin_index);
+
+  void encode_field_raw(uint32_t field, uint32_t type);
+  void encode_varint_raw(uint32_t value);
+
+ protected:
+  std::vector<uint8_t> *buffer_;
+};
+
+optional<uint32_t> proto_decode_varuint32(const uint8_t *buf, size_t len, uint32_t *consumed = nullptr);
+
+std::string as_string(const uint8_t *value, size_t len);
+int32_t as_sint32(uint32_t val);
+float as_float(uint32_t val);
+
+class APIServer;
+class UserServiceDescriptor;
+
+class ComponentIterator {
+ public:
+  ComponentIterator(APIServer *server);
+
+  void begin();
+  void advance();
+  virtual bool on_begin();
+#ifdef USE_BINARY_SENSOR
+  virtual bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) = 0;
+#endif
+#ifdef USE_COVER
+  virtual bool on_cover(cover::Cover *cover) = 0;
+#endif
+#ifdef USE_FAN
+  virtual bool on_fan(fan::FanState *fan) = 0;
+#endif
+#ifdef USE_LIGHT
+  virtual bool on_light(light::LightState *light) = 0;
+#endif
+#ifdef USE_SENSOR
+  virtual bool on_sensor(sensor::Sensor *sensor) = 0;
+#endif
+#ifdef USE_SWITCH
+  virtual bool on_switch(switch_::Switch *a_switch) = 0;
+#endif
+#ifdef USE_TEXT_SENSOR
+  virtual bool on_text_sensor(text_sensor::TextSensor *text_sensor) = 0;
+#endif
+  virtual bool on_service(UserServiceDescriptor *service);
+#ifdef USE_ESP32_CAMERA
+  virtual bool on_camera(esp32_camera::ESP32Camera *camera);
+#endif
+#ifdef USE_CLIMATE
+  virtual bool on_climate(climate::Climate *climate) = 0;
+#endif
+  virtual bool on_end();
+
+ protected:
+  enum class IteratorState {
+    NONE = 0,
+    BEGIN,
+#ifdef USE_BINARY_SENSOR
+    BINARY_SENSOR,
+#endif
+#ifdef USE_COVER
+    COVER,
+#endif
+#ifdef USE_FAN
+    FAN,
+#endif
+#ifdef USE_LIGHT
+    LIGHT,
+#endif
+#ifdef USE_SENSOR
+    SENSOR,
+#endif
+#ifdef USE_SWITCH
+    SWITCH,
+#endif
+#ifdef USE_TEXT_SENSOR
+    TEXT_SENSOR,
+#endif
+    SERVICE,
+#ifdef USE_ESP32_CAMERA
+    CAMERA,
+#endif
+#ifdef USE_CLIMATE
+    CLIMATE,
+#endif
+    MAX,
+  } state_{IteratorState::NONE};
+  size_t at_{0};
+
+  APIServer *server_;
+};
+
+}  // namespace api
+}  // namespace esphome

esphome/components/bang_bang/bang_bang_climate.cpp

@@ -0,0 +1,156 @@
+#include "bang_bang_climate.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace bang_bang {
+
+static const char *TAG = "bang_bang.climate";
+
+void BangBangClimate::setup() {
+  this->sensor_->add_on_state_callback([this](float state) {
+    this->current_temperature = state;
+    // control may have changed, recompute
+    this->compute_state_();
+    // current temperature changed, publish state
+    this->publish_state();
+  });
+  this->current_temperature = this->sensor_->state;
+  // restore set points
+  auto restore = this->restore_state_();
+  if (restore.has_value()) {
+    restore->to_call(this).perform();
+  } else {
+    // restore from defaults, change_away handles those for us
+    this->mode = climate::CLIMATE_MODE_AUTO;
+    this->change_away_(false);
+  }
+}
+void BangBangClimate::control(const climate::ClimateCall &call) {
+  if (call.get_mode().has_value())
+    this->mode = *call.get_mode();
+  if (call.get_target_temperature_low().has_value())
+    this->target_temperature_low = *call.get_target_temperature_low();
+  if (call.get_target_temperature_high().has_value())
+    this->target_temperature_high = *call.get_target_temperature_high();
+  if (call.get_away().has_value())
+    this->change_away_(*call.get_away());
+
+  this->compute_state_();
+  this->publish_state();
+}
+climate::ClimateTraits BangBangClimate::traits() {
+  auto traits = climate::ClimateTraits();
+  traits.set_supports_current_temperature(true);
+  traits.set_supports_auto_mode(true);
+  traits.set_supports_cool_mode(this->supports_cool_);
+  traits.set_supports_heat_mode(this->supports_heat_);
+  traits.set_supports_two_point_target_temperature(true);
+  traits.set_supports_away(this->supports_away_);
+  return traits;
+}
+void BangBangClimate::compute_state_() {
+  if (this->mode != climate::CLIMATE_MODE_AUTO) {
+    // in non-auto mode
+    this->switch_to_mode_(this->mode);
+    return;
+  }
+
+  // auto mode, compute target mode
+  if (isnan(this->current_temperature) || isnan(this->target_temperature_low) || isnan(this->target_temperature_high)) {
+    // if any control values are nan, go to OFF (idle) mode
+    this->switch_to_mode_(climate::CLIMATE_MODE_OFF);
+    return;
+  }
+  const bool too_cold = this->current_temperature < this->target_temperature_low;
+  const bool too_hot = this->current_temperature > this->target_temperature_high;
+
+  climate::ClimateMode target_mode;
+  if (too_cold) {
+    // too cold -> enable heating if possible, else idle
+    if (this->supports_heat_)
+      target_mode = climate::CLIMATE_MODE_HEAT;
+    else
+      target_mode = climate::CLIMATE_MODE_OFF;
+  } else if (too_hot) {
+    // too hot -> enable cooling if possible, else idle
+    if (this->supports_cool_)
+      target_mode = climate::CLIMATE_MODE_COOL;
+    else
+      target_mode = climate::CLIMATE_MODE_OFF;
+  } else {
+    // neither too hot nor too cold -> in range
+    if (this->supports_cool_ && this->supports_heat_) {
+      // if supports both ends, go to idle mode
+      target_mode = climate::CLIMATE_MODE_OFF;
+    } else {
+      // else use current mode and don't change (hysteresis)
+      target_mode = this->internal_mode_;
+    }
+  }
+
+  this->switch_to_mode_(target_mode);
+}
+void BangBangClimate::switch_to_mode_(climate::ClimateMode mode) {
+  if (mode == this->internal_mode_)
+    // already in target mode
+    return;
+
+  if (this->prev_trigger_ != nullptr) {
+    this->prev_trigger_->stop();
+    this->prev_trigger_ = nullptr;
+  }
+  Trigger<> *trig;
+  switch (mode) {
+    case climate::CLIMATE_MODE_OFF:
+      trig = this->idle_trigger_;
+      break;
+    case climate::CLIMATE_MODE_COOL:
+      trig = this->cool_trigger_;
+      break;
+    case climate::CLIMATE_MODE_HEAT:
+      trig = this->heat_trigger_;
+      break;
+    default:
+      trig = nullptr;
+  }
+  if (trig != nullptr) {
+    // trig should never be null, but still check so that we don't crash
+    trig->trigger();
+    this->internal_mode_ = mode;
+    this->prev_trigger_ = trig;
+    this->publish_state();
+  }
+}
+void BangBangClimate::change_away_(bool away) {
+  if (!away) {
+    this->target_temperature_low = this->normal_config_.default_temperature_low;
+    this->target_temperature_high = this->normal_config_.default_temperature_high;
+  } else {
+    this->target_temperature_low = this->away_config_.default_temperature_low;
+    this->target_temperature_high = this->away_config_.default_temperature_high;
+  }
+  this->away = away;
+}
+void BangBangClimate::set_normal_config(const BangBangClimateTargetTempConfig &normal_config) {
+  this->normal_config_ = normal_config;
+}
+void BangBangClimate::set_away_config(const BangBangClimateTargetTempConfig &away_config) {
+  this->supports_away_ = true;
+  this->away_config_ = away_config;
+}
+BangBangClimate::BangBangClimate()
+    : idle_trigger_(new Trigger<>()), cool_trigger_(new Trigger<>()), heat_trigger_(new Trigger<>()) {}
+void BangBangClimate::set_sensor(sensor::Sensor *sensor) { this->sensor_ = sensor; }
+Trigger<> *BangBangClimate::get_idle_trigger() const { return this->idle_trigger_; }
+Trigger<> *BangBangClimate::get_cool_trigger() const { return this->cool_trigger_; }
+void BangBangClimate::set_supports_cool(bool supports_cool) { this->supports_cool_ = supports_cool; }
+Trigger<> *BangBangClimate::get_heat_trigger() const { return this->heat_trigger_; }
+void BangBangClimate::set_supports_heat(bool supports_heat) { this->supports_heat_ = supports_heat; }
+
+BangBangClimateTargetTempConfig::BangBangClimateTargetTempConfig() = default;
+BangBangClimateTargetTempConfig::BangBangClimateTargetTempConfig(float default_temperature_low,
+                                                                 float default_temperature_high)
+    : default_temperature_low(default_temperature_low), default_temperature_high(default_temperature_high) {}
+
+}  // namespace bang_bang
+}  // namespace esphome

esphome/components/bang_bang/bang_bang_climate.h

@@ -0,0 +1,89 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/automation.h"
+#include "esphome/components/climate/climate.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome {
+namespace bang_bang {
+
+struct BangBangClimateTargetTempConfig {
+ public:
+  BangBangClimateTargetTempConfig();
+  BangBangClimateTargetTempConfig(float default_temperature_low, float default_temperature_high);
+
+  float default_temperature_low{NAN};
+  float default_temperature_high{NAN};
+};
+
+class BangBangClimate : public climate::Climate, public Component {
+ public:
+  BangBangClimate();
+  void setup() override;
+
+  void set_sensor(sensor::Sensor *sensor);
+  Trigger<> *get_idle_trigger() const;
+  Trigger<> *get_cool_trigger() const;
+  void set_supports_cool(bool supports_cool);
+  Trigger<> *get_heat_trigger() const;
+  void set_supports_heat(bool supports_heat);
+  void set_normal_config(const BangBangClimateTargetTempConfig &normal_config);
+  void set_away_config(const BangBangClimateTargetTempConfig &away_config);
+
+ protected:
+  /// Override control to change settings of the climate device.
+  void control(const climate::ClimateCall &call) override;
+  /// Change the away setting, will reset target temperatures to defaults.
+  void change_away_(bool away);
+  /// Return the traits of this controller.
+  climate::ClimateTraits traits() override;
+
+  /// Re-compute the state of this climate controller.
+  void compute_state_();
+
+  /// Switch the climate device to the given climate mode.
+  void switch_to_mode_(climate::ClimateMode mode);
+
+  /// The sensor used for getting the current temperature
+  sensor::Sensor *sensor_{nullptr};
+  /** The trigger to call when the controller should switch to idle mode.
+   *
+   * In idle mode, the controller is assumed to have both heating and cooling disabled.
+   */
+  Trigger<> *idle_trigger_;
+  /** The trigger to call when the controller should switch to cooling mode.
+   */
+  Trigger<> *cool_trigger_;
+  /** Whether the controller supports cooling.
+   *
+   * A false value for this attribute means that the controller has no cooling action
+   * (for example a thermostat, where only heating and not-heating is possible).
+   */
+  bool supports_cool_{false};
+  /** The trigger to call when the controller should switch to heating mode.
+   *
+   * A null value for this attribute means that the controller has no heating action
+   * For example window blinds, where only cooling (blinds closed) and not-cooling
+   * (blinds open) is possible.
+   */
+  Trigger<> *heat_trigger_{nullptr};
+  bool supports_heat_{false};
+  /** A reference to the trigger that was previously active.
+   *
+   * This is so that the previous trigger can be stopped before enabling a new one.
+   */
+  Trigger<> *prev_trigger_{nullptr};
+  /** The climate mode that is currently active - for a `.mode = AUTO` this will
+   * contain the actual mode the device
+   *
+   */
+  climate::ClimateMode internal_mode_{climate::CLIMATE_MODE_OFF};
+
+  BangBangClimateTargetTempConfig normal_config_{};
+  bool supports_away_{false};
+  BangBangClimateTargetTempConfig away_config_{};
+};
+
+}  // namespace bang_bang
+}  // namespace esphome

esphome/components/bang_bang/climate.py

@@ -0,0 +1,57 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome import automation
+from esphome.components import climate, sensor
+from esphome.const import CONF_AWAY_CONFIG, CONF_COOL_ACTION, \
+    CONF_DEFAULT_TARGET_TEMPERATURE_HIGH, CONF_DEFAULT_TARGET_TEMPERATURE_LOW, CONF_HEAT_ACTION, \
+    CONF_ID, CONF_IDLE_ACTION, CONF_SENSOR
+
+bang_bang_ns = cg.esphome_ns.namespace('bang_bang')
+BangBangClimate = bang_bang_ns.class_('BangBangClimate', climate.Climate, cg.Component)
+BangBangClimateTargetTempConfig = bang_bang_ns.struct('BangBangClimateTargetTempConfig')
+
+CONFIG_SCHEMA = cv.All(climate.CLIMATE_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(BangBangClimate),
+    cv.Required(CONF_SENSOR): cv.use_id(sensor.Sensor),
+    cv.Required(CONF_DEFAULT_TARGET_TEMPERATURE_LOW): cv.temperature,
+    cv.Required(CONF_DEFAULT_TARGET_TEMPERATURE_HIGH): cv.temperature,
+    cv.Required(CONF_IDLE_ACTION): automation.validate_automation(single=True),
+    cv.Optional(CONF_COOL_ACTION): automation.validate_automation(single=True),
+    cv.Optional(CONF_HEAT_ACTION): automation.validate_automation(single=True),
+    cv.Optional(CONF_AWAY_CONFIG): cv.Schema({
+        cv.Required(CONF_DEFAULT_TARGET_TEMPERATURE_LOW): cv.temperature,
+        cv.Required(CONF_DEFAULT_TARGET_TEMPERATURE_HIGH): cv.temperature,
+    }),
+}).extend(cv.COMPONENT_SCHEMA), cv.has_at_least_one_key(CONF_COOL_ACTION, CONF_HEAT_ACTION))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield climate.register_climate(var, config)
+
+    sens = yield cg.get_variable(config[CONF_SENSOR])
+    cg.add(var.set_sensor(sens))
+
+    normal_config = BangBangClimateTargetTempConfig(
+        config[CONF_DEFAULT_TARGET_TEMPERATURE_LOW],
+        config[CONF_DEFAULT_TARGET_TEMPERATURE_HIGH]
+    )
+    cg.add(var.set_normal_config(normal_config))
+
+    yield automation.build_automation(var.get_idle_trigger(), [], config[CONF_IDLE_ACTION])
+
+    if CONF_COOL_ACTION in config:
+        yield automation.build_automation(var.get_cool_trigger(), [], config[CONF_COOL_ACTION])
+        cg.add(var.set_supports_cool(True))
+    if CONF_HEAT_ACTION in config:
+        yield automation.build_automation(var.get_heat_trigger(), [], config[CONF_HEAT_ACTION])
+        cg.add(var.set_supports_heat(True))
+
+    if CONF_AWAY_CONFIG in config:
+        away = config[CONF_AWAY_CONFIG]
+        away_config = BangBangClimateTargetTempConfig(
+            away[CONF_DEFAULT_TARGET_TEMPERATURE_LOW],
+            away[CONF_DEFAULT_TARGET_TEMPERATURE_HIGH]
+        )
+        cg.add(var.set_away_config(away_config))

esphome/components/bh1750/bh1750.cpp

@@ -0,0 +1,78 @@
+#include "bh1750.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace bh1750 {
+
+static const char *TAG = "bh1750.sensor";
+
+static const uint8_t BH1750_COMMAND_POWER_ON = 0b00000001;
+
+void BH1750Sensor::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up BH1750 '%s'...", this->name_.c_str());
+  if (!this->write_bytes(BH1750_COMMAND_POWER_ON, nullptr, 0)) {
+    this->mark_failed();
+    return;
+  }
+}
+void BH1750Sensor::dump_config() {
+  LOG_SENSOR("", "BH1750", this);
+  LOG_I2C_DEVICE(this);
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication with BH1750 failed!");
+  }
+
+  const char *resolution_s;
+  switch (this->resolution_) {
+    case BH1750_RESOLUTION_0P5_LX:
+      resolution_s = "0.5";
+      break;
+    case BH1750_RESOLUTION_1P0_LX:
+      resolution_s = "1";
+      break;
+    case BH1750_RESOLUTION_4P0_LX:
+      resolution_s = "4";
+      break;
+    default:
+      resolution_s = "Unknown";
+      break;
+  }
+  ESP_LOGCONFIG(TAG, "  Resolution: %s", resolution_s);
+  LOG_UPDATE_INTERVAL(this);
+}
+
+void BH1750Sensor::update() {
+  if (!this->write_bytes(this->resolution_, nullptr, 0))
+    return;
+
+  uint32_t wait = 0;
+  // use max conversion times
+  switch (this->resolution_) {
+    case BH1750_RESOLUTION_0P5_LX:
+    case BH1750_RESOLUTION_1P0_LX:
+      wait = 180;
+      break;
+    case BH1750_RESOLUTION_4P0_LX:
+      wait = 24;
+      break;
+  }
+
+  this->set_timeout("illuminance", wait, [this]() { this->read_data_(); });
+}
+float BH1750Sensor::get_setup_priority() const { return setup_priority::DATA; }
+void BH1750Sensor::read_data_() {
+  uint16_t raw_value;
+  if (!this->parent_->raw_receive_16(this->address_, &raw_value, 1)) {
+    this->status_set_warning();
+    return;
+  }
+
+  float lx = float(raw_value) / 1.2f;
+  ESP_LOGD(TAG, "'%s': Got illuminance=%.1flx", this->get_name().c_str(), lx);
+  this->publish_state(lx);
+  this->status_clear_warning();
+}
+void BH1750Sensor::set_resolution(BH1750Resolution resolution) { this->resolution_ = resolution; }
+
+}  // namespace bh1750
+}  // namespace esphome

esphome/components/bh1750/bh1750.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/i2c/i2c.h"
+
+namespace esphome {
+namespace bh1750 {
+
+/// Enum listing all resolutions that can be used with the BH1750
+enum BH1750Resolution {
+  BH1750_RESOLUTION_4P0_LX = 0b00100011,  // one-time low resolution mode
+  BH1750_RESOLUTION_1P0_LX = 0b00100000,  // one-time high resolution mode 1
+  BH1750_RESOLUTION_0P5_LX = 0b00100001,  // one-time high resolution mode 2
+};
+
+/// This class implements support for the i2c-based BH1750 ambient light sensor.
+class BH1750Sensor : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
+ public:
+  /** Set the resolution of this sensor.
+   *
+   * Possible values are:
+   *
+   *  - `BH1750_RESOLUTION_4P0_LX`
+   *  - `BH1750_RESOLUTION_1P0_LX`
+   *  - `BH1750_RESOLUTION_0P5_LX` (default)
+   *
+   * @param resolution The new resolution of the sensor.
+   */
+  void set_resolution(BH1750Resolution resolution);
+
+  // ========== INTERNAL METHODS ==========
+  // (In most use cases you won't need these)
+  void setup() override;
+  void dump_config() override;
+  void update() override;
+  float get_setup_priority() const override;
+
+ protected:
+  void read_data_();
+
+  BH1750Resolution resolution_{BH1750_RESOLUTION_0P5_LX};
+};
+
+}  // namespace bh1750
+}  // namespace esphome

esphome/components/bh1750/sensor.py

@@ -0,0 +1,30 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c, sensor
+from esphome.const import CONF_ID, CONF_RESOLUTION, UNIT_LUX, ICON_BRIGHTNESS_5
+
+DEPENDENCIES = ['i2c']
+
+bh1750_ns = cg.esphome_ns.namespace('bh1750')
+BH1750Resolution = bh1750_ns.enum('BH1750Resolution')
+BH1750_RESOLUTIONS = {
+    4.0: BH1750Resolution.BH1750_RESOLUTION_4P0_LX,
+    1.0: BH1750Resolution.BH1750_RESOLUTION_1P0_LX,
+    0.5: BH1750Resolution.BH1750_RESOLUTION_0P5_LX,
+}
+
+BH1750Sensor = bh1750_ns.class_('BH1750Sensor', sensor.Sensor, cg.PollingComponent, i2c.I2CDevice)
+
+CONFIG_SCHEMA = sensor.sensor_schema(UNIT_LUX, ICON_BRIGHTNESS_5, 1).extend({
+    cv.GenerateID(): cv.declare_id(BH1750Sensor),
+    cv.Optional(CONF_RESOLUTION, default=0.5): cv.enum(BH1750_RESOLUTIONS, float=True),
+}).extend(cv.polling_component_schema('60s')).extend(i2c.i2c_device_schema(0x23))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield sensor.register_sensor(var, config)
+    yield i2c.register_i2c_device(var, config)
+
+    cg.add(var.set_resolution(config[CONF_RESOLUTION]))

esphome/components/binary/__init__.py

@@ -0,0 +1,3 @@
+import esphome.codegen as cg
+
+binary_ns = cg.esphome_ns.namespace('binary')

esphome/components/binary/fan/__init__.py

@@ -0,0 +1,27 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import fan, output
+from esphome.const import CONF_OSCILLATION_OUTPUT, CONF_OUTPUT, CONF_OUTPUT_ID
+from .. import binary_ns
+
+BinaryFan = binary_ns.class_('BinaryFan', cg.Component)
+
+CONFIG_SCHEMA = fan.FAN_SCHEMA.extend({
+    cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(BinaryFan),
+    cv.Required(CONF_OUTPUT): cv.use_id(output.BinaryOutput),
+    cv.Optional(CONF_OSCILLATION_OUTPUT): cv.use_id(output.BinaryOutput),
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_OUTPUT_ID])
+    yield cg.register_component(var, config)
+
+    fan_ = yield fan.create_fan_state(config)
+    cg.add(var.set_fan(fan_))
+    output_ = yield cg.get_variable(config[CONF_OUTPUT])
+    cg.add(var.set_output(output_))
+
+    if CONF_OSCILLATION_OUTPUT in config:
+        oscillation_output = yield cg.get_variable(config[CONF_OSCILLATION_OUTPUT])
+        cg.add(var.set_oscillation(oscillation_output))

esphome/components/binary/fan/binary_fan.cpp

@@ -0,0 +1,48 @@
+#include "binary_fan.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace binary {
+
+static const char *TAG = "binary.fan";
+
+void binary::BinaryFan::dump_config() {
+  ESP_LOGCONFIG(TAG, "Fan '%s':", this->fan_->get_name().c_str());
+  if (this->fan_->get_traits().supports_oscillation()) {
+    ESP_LOGCONFIG(TAG, "  Oscillation: YES");
+  }
+}
+void BinaryFan::setup() {
+  auto traits = fan::FanTraits(this->oscillating_ != nullptr, false);
+  this->fan_->set_traits(traits);
+  this->fan_->add_on_state_callback([this]() { this->next_update_ = true; });
+}
+void BinaryFan::loop() {
+  if (!this->next_update_) {
+    return;
+  }
+  this->next_update_ = false;
+
+  {
+    bool enable = this->fan_->state;
+    if (enable)
+      this->output_->turn_on();
+    else
+      this->output_->turn_off();
+    ESP_LOGD(TAG, "Setting binary state: %s", ONOFF(enable));
+  }
+
+  if (this->oscillating_ != nullptr) {
+    bool enable = this->fan_->oscillating;
+    if (enable) {
+      this->oscillating_->turn_on();
+    } else {
+      this->oscillating_->turn_off();
+    }
+    ESP_LOGD(TAG, "Setting oscillation: %s", ONOFF(enable));
+  }
+}
+float BinaryFan::get_setup_priority() const { return setup_priority::DATA; }
+
+}  // namespace binary
+}  // namespace esphome