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[adc] Enable ADC on ESP32-P4 (#9954)

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This commit is contained in:
Clyde Stubbs 2025-07-29 16:20:37 +10:00 committed by GitHub
parent 3d5b602288
commit 5f7c2f771f
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GPG Key ID: B5690EEEBB952194
4 changed files with 33 additions and 10 deletions
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20
esphome/components/adc/__init__.py
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@ -1,6 +1,6 @@
from esphome import pins
import esphome.codegen as cg
from esphome.components.esp32 import get_esp32_variant
from esphome.components.esp32 import VARIANT_ESP32P4, get_esp32_variant
from esphome.components.esp32.const import (
VARIANT_ESP32,
VARIANT_ESP32C2,
@ -140,6 +140,16 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
9: adc_channel_t.ADC_CHANNEL_8,
10: adc_channel_t.ADC_CHANNEL_9,
},
VARIANT_ESP32P4: {
16: adc_channel_t.ADC_CHANNEL_0,
17: adc_channel_t.ADC_CHANNEL_1,
18: adc_channel_t.ADC_CHANNEL_2,
19: adc_channel_t.ADC_CHANNEL_3,
20: adc_channel_t.ADC_CHANNEL_4,
21: adc_channel_t.ADC_CHANNEL_5,
22: adc_channel_t.ADC_CHANNEL_6,
23: adc_channel_t.ADC_CHANNEL_7,
},
}
# pin to adc2 channel mapping
@ -198,6 +208,14 @@ ESP32_VARIANT_ADC2_PIN_TO_CHANNEL = {
19: adc_channel_t.ADC_CHANNEL_8,
20: adc_channel_t.ADC_CHANNEL_9,
},
VARIANT_ESP32P4: {
49: adc_channel_t.ADC_CHANNEL_0,
50: adc_channel_t.ADC_CHANNEL_1,
51: adc_channel_t.ADC_CHANNEL_2,
52: adc_channel_t.ADC_CHANNEL_3,
53: adc_channel_t.ADC_CHANNEL_4,
54: adc_channel_t.ADC_CHANNEL_5,
},
}

4
esphome/components/adc/adc_sensor.h
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@ -136,8 +136,8 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
adc_oneshot_unit_handle_t adc_handle_{nullptr};
adc_cali_handle_t calibration_handle_{nullptr};
adc_atten_t attenuation_{ADC_ATTEN_DB_0};
adc_channel_t channel_;
adc_unit_t adc_unit_;
adc_channel_t channel_{};
adc_unit_t adc_unit_{};
struct SetupFlags {
uint8_t init_complete : 1;
uint8_t config_complete : 1;

13
esphome/components/adc/adc_sensor_esp32.cpp
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@ -72,10 +72,9 @@ void ADCSensor::setup() {
// Initialize ADC calibration
if (this->calibration_handle_ == nullptr) {
adc_cali_handle_t handle = nullptr;
esp_err_t err;
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
// RISC-V variants and S3 use curve fitting calibration
adc_cali_curve_fitting_config_t cali_config = {}; // Zero initialize first
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
@ -187,7 +186,7 @@ float ADCSensor::sample_fixed_attenuation_() {
ESP_LOGW(TAG, "ADC calibration conversion failed with error %d, disabling calibration", err);
if (this->calibration_handle_ != nullptr) {
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
#else // Other ESP32 variants use line fitting calibration
adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
@ -220,7 +219,7 @@ float ADCSensor::sample_autorange_() {
if (this->calibration_handle_ != nullptr) {
// Delete old calibration handle
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
#else
adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
@ -232,7 +231,7 @@ float ADCSensor::sample_autorange_() {
adc_cali_handle_t handle = nullptr;
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
adc_cali_curve_fitting_config_t cali_config = {};
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
cali_config.chan = this->channel_;
@ -261,7 +260,7 @@ float ADCSensor::sample_autorange_() {
ESP_LOGW(TAG, "ADC read failed in autorange with error %d", err);
if (handle != nullptr) {
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
adc_cali_delete_scheme_curve_fitting(handle);
#else
adc_cali_delete_scheme_line_fitting(handle);
@ -281,7 +280,7 @@ float ADCSensor::sample_autorange_() {
}
// Clean up calibration handle
#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
adc_cali_delete_scheme_curve_fitting(handle);
#else
adc_cali_delete_scheme_line_fitting(handle);

6
tests/components/adc/test.esp32-p4-idf.yaml Normal file
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@ -0,0 +1,6 @@
packages:
base: !include common.yaml
sensor:
- id: !extend my_sensor
pin: GPIO50