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https://github.com/esphome/esphome.git
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ESP32 enable ADC2 when wifi is disabled (#4381)
Co-authored-by: Keith Burzinski <kbx81x@gmail.com>
This commit is contained in:
Pierre-Alexis Ciavaldini
Jesse Hills
parent
d7945de001
commit
6bdc0c92fe
4 changed files with 166 additions and 46 deletions
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@ -24,6 +24,7 @@ ATTENUATION_MODES = {
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}
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adc1_channel_t = cg.global_ns.enum("adc1_channel_t")
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adc2_channel_t = cg.global_ns.enum("adc2_channel_t")
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# From https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/adc_common.h
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# pin to adc1 channel mapping
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@ -78,6 +79,49 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
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},
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}
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ESP32_VARIANT_ADC2_PIN_TO_CHANNEL = {
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# TODO: add other variants
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VARIANT_ESP32: {
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4: adc2_channel_t.ADC2_CHANNEL_0,
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0: adc2_channel_t.ADC2_CHANNEL_1,
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2: adc2_channel_t.ADC2_CHANNEL_2,
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15: adc2_channel_t.ADC2_CHANNEL_3,
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13: adc2_channel_t.ADC2_CHANNEL_4,
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12: adc2_channel_t.ADC2_CHANNEL_5,
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14: adc2_channel_t.ADC2_CHANNEL_6,
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27: adc2_channel_t.ADC2_CHANNEL_7,
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25: adc2_channel_t.ADC2_CHANNEL_8,
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26: adc2_channel_t.ADC2_CHANNEL_9,
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},
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VARIANT_ESP32S2: {
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11: adc2_channel_t.ADC2_CHANNEL_0,
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12: adc2_channel_t.ADC2_CHANNEL_1,
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13: adc2_channel_t.ADC2_CHANNEL_2,
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14: adc2_channel_t.ADC2_CHANNEL_3,
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15: adc2_channel_t.ADC2_CHANNEL_4,
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16: adc2_channel_t.ADC2_CHANNEL_5,
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17: adc2_channel_t.ADC2_CHANNEL_6,
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18: adc2_channel_t.ADC2_CHANNEL_7,
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19: adc2_channel_t.ADC2_CHANNEL_8,
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20: adc2_channel_t.ADC2_CHANNEL_9,
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},
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VARIANT_ESP32S3: {
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11: adc2_channel_t.ADC2_CHANNEL_0,
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12: adc2_channel_t.ADC2_CHANNEL_1,
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13: adc2_channel_t.ADC2_CHANNEL_2,
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14: adc2_channel_t.ADC2_CHANNEL_3,
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15: adc2_channel_t.ADC2_CHANNEL_4,
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16: adc2_channel_t.ADC2_CHANNEL_5,
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17: adc2_channel_t.ADC2_CHANNEL_6,
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18: adc2_channel_t.ADC2_CHANNEL_7,
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19: adc2_channel_t.ADC2_CHANNEL_8,
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20: adc2_channel_t.ADC2_CHANNEL_9,
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},
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VARIANT_ESP32C3: {
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5: adc2_channel_t.ADC2_CHANNEL_0,
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},
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}
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def validate_adc_pin(value):
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if str(value).upper() == "VCC":
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@ -89,11 +133,18 @@ def validate_adc_pin(value):
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if CORE.is_esp32:
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value = pins.internal_gpio_input_pin_number(value)
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variant = get_esp32_variant()
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if variant not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL:
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if (
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variant not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL
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and variant not in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL
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):
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raise cv.Invalid(f"This ESP32 variant ({variant}) is not supported")
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if value not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]:
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if (
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value not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]
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and value not in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
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):
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raise cv.Invalid(f"{variant} doesn't support ADC on this pin")
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return pins.internal_gpio_input_pin_schema(value)
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if CORE.is_esp8266:
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@ -104,7 +155,7 @@ def validate_adc_pin(value):
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)
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if value != 17: # A0
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raise cv.Invalid("ESP8266: Only pin A0 (GPIO17) supports ADC.")
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raise cv.Invalid("ESP8266: Only pin A0 (GPIO17) supports ADC")
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return pins.gpio_pin_schema(
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{CONF_ANALOG: True, CONF_INPUT: True}, internal=True
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)(value)
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@ -112,7 +163,7 @@ def validate_adc_pin(value):
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if CORE.is_rp2040:
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value = pins.internal_gpio_input_pin_number(value)
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if value not in (26, 27, 28, 29):
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raise cv.Invalid("RP2040: Only pins 26, 27, 28 and 29 support ADC.")
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raise cv.Invalid("RP2040: Only pins 26, 27, 28 and 29 support ADC")
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return pins.internal_gpio_input_pin_schema(value)
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raise NotImplementedError
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@ -20,20 +20,20 @@ namespace adc {
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static const char *const TAG = "adc";
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// 13bit for S2, and 12bit for all other esp32 variants
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// 13-bit for S2, 12-bit for all other ESP32 variants
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#ifdef USE_ESP32
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static const adc_bits_width_t ADC_WIDTH_MAX_SOC_BITS = static_cast<adc_bits_width_t>(ADC_WIDTH_MAX - 1);
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#ifndef SOC_ADC_RTC_MAX_BITWIDTH
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#if USE_ESP32_VARIANT_ESP32S2
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static const int SOC_ADC_RTC_MAX_BITWIDTH = 13;
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static const int32_t SOC_ADC_RTC_MAX_BITWIDTH = 13;
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#else
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static const int SOC_ADC_RTC_MAX_BITWIDTH = 12;
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static const int32_t SOC_ADC_RTC_MAX_BITWIDTH = 12;
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#endif
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#endif
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static const int ADC_MAX = (1 << SOC_ADC_RTC_MAX_BITWIDTH) - 1; // 4095 (12 bit) or 8191 (13 bit)
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static const int ADC_HALF = (1 << SOC_ADC_RTC_MAX_BITWIDTH) >> 1; // 2048 (12 bit) or 4096 (13 bit)
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static const int32_t ADC_MAX = (1 << SOC_ADC_RTC_MAX_BITWIDTH) - 1; // 4095 (12 bit) or 8191 (13 bit)
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static const int32_t ADC_HALF = (1 << SOC_ADC_RTC_MAX_BITWIDTH) >> 1; // 2048 (12 bit) or 4096 (13 bit)
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#endif
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#ifdef USE_RP2040
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@ -47,14 +47,21 @@ extern "C"
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#endif
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#ifdef USE_ESP32
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if (channel1_ != ADC1_CHANNEL_MAX) {
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adc1_config_width(ADC_WIDTH_MAX_SOC_BITS);
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if (!autorange_) {
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adc1_config_channel_atten(channel_, attenuation_);
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adc1_config_channel_atten(channel1_, attenuation_);
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}
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} else if (channel2_ != ADC2_CHANNEL_MAX) {
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if (!autorange_) {
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adc2_config_channel_atten(channel2_, attenuation_);
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}
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}
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// load characteristics for each attenuation
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for (int i = 0; i < (int) ADC_ATTEN_MAX; i++) {
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auto cal_value = esp_adc_cal_characterize(ADC_UNIT_1, (adc_atten_t) i, ADC_WIDTH_MAX_SOC_BITS,
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for (int32_t i = 0; i < (int32_t) ADC_ATTEN_MAX; i++) {
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auto adc_unit = channel1_ != ADC1_CHANNEL_MAX ? ADC_UNIT_1 : ADC_UNIT_2;
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auto cal_value = esp_adc_cal_characterize(adc_unit, (adc_atten_t) i, ADC_WIDTH_MAX_SOC_BITS,
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1100, // default vref
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&cal_characteristics_[i]);
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switch (cal_value) {
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@ -136,9 +143,9 @@ void ADCSensor::update() {
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#ifdef USE_ESP8266
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float ADCSensor::sample() {
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#ifdef USE_ADC_SENSOR_VCC
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int raw = ESP.getVcc(); // NOLINT(readability-static-accessed-through-instance)
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int32_t raw = ESP.getVcc(); // NOLINT(readability-static-accessed-through-instance)
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#else
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int raw = analogRead(this->pin_->get_pin()); // NOLINT
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int32_t raw = analogRead(this->pin_->get_pin()); // NOLINT
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#endif
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if (output_raw_) {
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return raw;
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@ -150,29 +157,53 @@ float ADCSensor::sample() {
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#ifdef USE_ESP32
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float ADCSensor::sample() {
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if (!autorange_) {
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int raw = adc1_get_raw(channel_);
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int32_t raw = -1;
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if (channel1_ != ADC1_CHANNEL_MAX) {
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raw = adc1_get_raw(channel1_);
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} else if (channel2_ != ADC2_CHANNEL_MAX) {
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adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw);
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}
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if (raw == -1) {
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return NAN;
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}
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if (output_raw_) {
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return raw;
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}
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uint32_t mv = esp_adc_cal_raw_to_voltage(raw, &cal_characteristics_[(int) attenuation_]);
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uint32_t mv = esp_adc_cal_raw_to_voltage(raw, &cal_characteristics_[(int32_t) attenuation_]);
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return mv / 1000.0f;
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}
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int raw11, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX;
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adc1_config_channel_atten(channel_, ADC_ATTEN_DB_11);
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raw11 = adc1_get_raw(channel_);
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int32_t raw11 = ADC_MAX, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX;
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if (channel1_ != ADC1_CHANNEL_MAX) {
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adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_11);
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raw11 = adc1_get_raw(channel1_);
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if (raw11 < ADC_MAX) {
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adc1_config_channel_atten(channel_, ADC_ATTEN_DB_6);
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raw6 = adc1_get_raw(channel_);
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adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_6);
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raw6 = adc1_get_raw(channel1_);
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if (raw6 < ADC_MAX) {
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adc1_config_channel_atten(channel_, ADC_ATTEN_DB_2_5);
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raw2 = adc1_get_raw(channel_);
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adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_2_5);
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raw2 = adc1_get_raw(channel1_);
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if (raw2 < ADC_MAX) {
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adc1_config_channel_atten(channel_, ADC_ATTEN_DB_0);
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raw0 = adc1_get_raw(channel_);
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adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_0);
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raw0 = adc1_get_raw(channel1_);
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}
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}
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}
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} else if (channel2_ != ADC2_CHANNEL_MAX) {
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adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_11);
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adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw11);
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if (raw11 < ADC_MAX) {
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adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_6);
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adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw6);
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if (raw6 < ADC_MAX) {
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adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_2_5);
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adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw2);
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if (raw2 < ADC_MAX) {
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adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_0);
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adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw0);
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}
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}
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}
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}
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@ -181,10 +212,10 @@ float ADCSensor::sample() {
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return NAN;
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}
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uint32_t mv11 = esp_adc_cal_raw_to_voltage(raw11, &cal_characteristics_[(int) ADC_ATTEN_DB_11]);
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uint32_t mv6 = esp_adc_cal_raw_to_voltage(raw6, &cal_characteristics_[(int) ADC_ATTEN_DB_6]);
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uint32_t mv2 = esp_adc_cal_raw_to_voltage(raw2, &cal_characteristics_[(int) ADC_ATTEN_DB_2_5]);
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uint32_t mv0 = esp_adc_cal_raw_to_voltage(raw0, &cal_characteristics_[(int) ADC_ATTEN_DB_0]);
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uint32_t mv11 = esp_adc_cal_raw_to_voltage(raw11, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_11]);
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uint32_t mv6 = esp_adc_cal_raw_to_voltage(raw6, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_6]);
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uint32_t mv2 = esp_adc_cal_raw_to_voltage(raw2, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_2_5]);
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uint32_t mv0 = esp_adc_cal_raw_to_voltage(raw0, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_0]);
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// Contribution of each value, in range 0-2048 (12 bit ADC) or 0-4096 (13 bit ADC)
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uint32_t c11 = std::min(raw11, ADC_HALF);
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@ -212,7 +243,7 @@ float ADCSensor::sample() {
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adc_select_input(pin - 26);
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}
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int raw = adc_read();
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int32_t raw = adc_read();
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if (this->is_temperature_) {
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adc_set_temp_sensor_enabled(false);
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}
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@ -19,16 +19,23 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
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#ifdef USE_ESP32
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/// Set the attenuation for this pin. Only available on the ESP32.
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void set_attenuation(adc_atten_t attenuation) { attenuation_ = attenuation; }
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void set_channel(adc1_channel_t channel) { channel_ = channel; }
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void set_channel1(adc1_channel_t channel) {
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channel1_ = channel;
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channel2_ = ADC2_CHANNEL_MAX;
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}
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void set_channel2(adc2_channel_t channel) {
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channel2_ = channel;
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channel1_ = ADC1_CHANNEL_MAX;
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}
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void set_autorange(bool autorange) { autorange_ = autorange; }
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#endif
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/// Update adc values.
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/// Update ADC values
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void update() override;
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/// Setup ADc
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/// Setup ADC
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void setup() override;
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void dump_config() override;
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/// `HARDWARE_LATE` setup priority.
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/// `HARDWARE_LATE` setup priority
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float get_setup_priority() const override;
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void set_pin(InternalGPIOPin *pin) { this->pin_ = pin; }
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void set_output_raw(bool output_raw) { output_raw_ = output_raw; }
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@ -52,9 +59,10 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
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#ifdef USE_ESP32
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adc_atten_t attenuation_{ADC_ATTEN_DB_0};
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adc1_channel_t channel_{};
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adc1_channel_t channel1_{ADC1_CHANNEL_MAX};
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adc2_channel_t channel2_{ADC2_CHANNEL_MAX};
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bool autorange_{false};
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esp_adc_cal_characteristics_t cal_characteristics_[(int) ADC_ATTEN_MAX] = {};
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esp_adc_cal_characteristics_t cal_characteristics_[(int32_t) ADC_ATTEN_MAX] = {};
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#endif
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};
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@ -1,5 +1,7 @@
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import esphome.codegen as cg
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import esphome.config_validation as cv
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import esphome.final_validate as fv
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from esphome.core import CORE
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from esphome.components import sensor, voltage_sampler
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from esphome.components.esp32 import get_esp32_variant
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from esphome.const import (
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@ -8,15 +10,15 @@ from esphome.const import (
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CONF_NUMBER,
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CONF_PIN,
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CONF_RAW,
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CONF_WIFI,
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DEVICE_CLASS_VOLTAGE,
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STATE_CLASS_MEASUREMENT,
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UNIT_VOLT,
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)
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from esphome.core import CORE
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from . import (
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ATTENUATION_MODES,
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ESP32_VARIANT_ADC1_PIN_TO_CHANNEL,
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ESP32_VARIANT_ADC2_PIN_TO_CHANNEL,
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validate_adc_pin,
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)
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@ -25,7 +27,23 @@ AUTO_LOAD = ["voltage_sampler"]
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def validate_config(config):
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if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto":
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raise cv.Invalid("Automatic attenuation cannot be used when raw output is set.")
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raise cv.Invalid("Automatic attenuation cannot be used when raw output is set")
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return config
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def final_validate_config(config):
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if CORE.is_esp32:
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variant = get_esp32_variant()
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if (
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CONF_WIFI in fv.full_config.get()
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and config[CONF_PIN][CONF_NUMBER]
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in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
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):
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raise cv.Invalid(
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f"{variant} doesn't support ADC on this pin when Wi-Fi is configured"
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)
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return config
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@ -55,6 +73,8 @@ CONFIG_SCHEMA = cv.All(
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validate_config,
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)
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FINAL_VALIDATE_SCHEMA = final_validate_config
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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@ -81,5 +101,15 @@ async def to_code(config):
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if CORE.is_esp32:
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variant = get_esp32_variant()
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pin_num = config[CONF_PIN][CONF_NUMBER]
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if (
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variant in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL
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and pin_num in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]
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):
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chan = ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant][pin_num]
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cg.add(var.set_channel(chan))
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cg.add(var.set_channel1(chan))
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elif (
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variant in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL
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and pin_num in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
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):
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chan = ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant][pin_num]
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cg.add(var.set_channel2(chan))
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