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ESP32 enable ADC2 when wifi is disabled (#4381)

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Co-authored-by: Keith Burzinski <kbx81x@gmail.com>
This commit is contained in:
Pierre-Alexis Ciavaldini 2023-07-16 21:42:01 +02:00 committed by Jesse Hills
parent d7945de001
commit 6bdc0c92fe
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GPG Key ID: BEAAE804EFD8E83A
4 changed files with 166 additions and 46 deletions
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59
esphome/components/adc/__init__.py
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@ -24,6 +24,7 @@ ATTENUATION_MODES = {
} }
adc1_channel_t = cg.global_ns.enum("adc1_channel_t") adc1_channel_t = cg.global_ns.enum("adc1_channel_t")
adc2_channel_t = cg.global_ns.enum("adc2_channel_t")
# From https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/adc_common.h # From https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/adc_common.h
# pin to adc1 channel mapping # pin to adc1 channel mapping
@ -78,6 +79,49 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
}, },
} }
ESP32_VARIANT_ADC2_PIN_TO_CHANNEL = {
# TODO: add other variants
VARIANT_ESP32: {
4: adc2_channel_t.ADC2_CHANNEL_0,
0: adc2_channel_t.ADC2_CHANNEL_1,
2: adc2_channel_t.ADC2_CHANNEL_2,
15: adc2_channel_t.ADC2_CHANNEL_3,
13: adc2_channel_t.ADC2_CHANNEL_4,
12: adc2_channel_t.ADC2_CHANNEL_5,
14: adc2_channel_t.ADC2_CHANNEL_6,
27: adc2_channel_t.ADC2_CHANNEL_7,
25: adc2_channel_t.ADC2_CHANNEL_8,
26: adc2_channel_t.ADC2_CHANNEL_9,
},
VARIANT_ESP32S2: {
11: adc2_channel_t.ADC2_CHANNEL_0,
12: adc2_channel_t.ADC2_CHANNEL_1,
13: adc2_channel_t.ADC2_CHANNEL_2,
14: adc2_channel_t.ADC2_CHANNEL_3,
15: adc2_channel_t.ADC2_CHANNEL_4,
16: adc2_channel_t.ADC2_CHANNEL_5,
17: adc2_channel_t.ADC2_CHANNEL_6,
18: adc2_channel_t.ADC2_CHANNEL_7,
19: adc2_channel_t.ADC2_CHANNEL_8,
20: adc2_channel_t.ADC2_CHANNEL_9,
},
VARIANT_ESP32S3: {
11: adc2_channel_t.ADC2_CHANNEL_0,
12: adc2_channel_t.ADC2_CHANNEL_1,
13: adc2_channel_t.ADC2_CHANNEL_2,
14: adc2_channel_t.ADC2_CHANNEL_3,
15: adc2_channel_t.ADC2_CHANNEL_4,
16: adc2_channel_t.ADC2_CHANNEL_5,
17: adc2_channel_t.ADC2_CHANNEL_6,
18: adc2_channel_t.ADC2_CHANNEL_7,
19: adc2_channel_t.ADC2_CHANNEL_8,
20: adc2_channel_t.ADC2_CHANNEL_9,
},
VARIANT_ESP32C3: {
5: adc2_channel_t.ADC2_CHANNEL_0,
},
}
def validate_adc_pin(value): def validate_adc_pin(value):
if str(value).upper() == "VCC": if str(value).upper() == "VCC":
@ -89,11 +133,18 @@ def validate_adc_pin(value):
if CORE.is_esp32: if CORE.is_esp32:
value = pins.internal_gpio_input_pin_number(value) value = pins.internal_gpio_input_pin_number(value)
variant = get_esp32_variant() variant = get_esp32_variant()
if variant not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL: if (
variant not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL
and variant not in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL
):
raise cv.Invalid(f"This ESP32 variant ({variant}) is not supported") raise cv.Invalid(f"This ESP32 variant ({variant}) is not supported")
if value not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]: if (
value not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]
and value not in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
):
raise cv.Invalid(f"{variant} doesn't support ADC on this pin") raise cv.Invalid(f"{variant} doesn't support ADC on this pin")
return pins.internal_gpio_input_pin_schema(value) return pins.internal_gpio_input_pin_schema(value)
if CORE.is_esp8266: if CORE.is_esp8266:
@ -104,7 +155,7 @@ def validate_adc_pin(value):
) )
if value != 17: # A0 if value != 17: # A0
raise cv.Invalid("ESP8266: Only pin A0 (GPIO17) supports ADC.") raise cv.Invalid("ESP8266: Only pin A0 (GPIO17) supports ADC")
return pins.gpio_pin_schema( return pins.gpio_pin_schema(
{CONF_ANALOG: True, CONF_INPUT: True}, internal=True {CONF_ANALOG: True, CONF_INPUT: True}, internal=True
)(value) )(value)
@ -112,7 +163,7 @@ def validate_adc_pin(value):
if CORE.is_rp2040: if CORE.is_rp2040:
value = pins.internal_gpio_input_pin_number(value) value = pins.internal_gpio_input_pin_number(value)
if value not in (26, 27, 28, 29): if value not in (26, 27, 28, 29):
raise cv.Invalid("RP2040: Only pins 26, 27, 28 and 29 support ADC.") raise cv.Invalid("RP2040: Only pins 26, 27, 28 and 29 support ADC")
return pins.internal_gpio_input_pin_schema(value) return pins.internal_gpio_input_pin_schema(value)
raise NotImplementedError raise NotImplementedError

93
esphome/components/adc/adc_sensor.cpp
View File

@ -20,20 +20,20 @@ namespace adc {
static const char *const TAG = "adc"; static const char *const TAG = "adc";
// 13bit for S2, and 12bit for all other esp32 variants // 13-bit for S2, 12-bit for all other ESP32 variants
#ifdef USE_ESP32 #ifdef USE_ESP32
static const adc_bits_width_t ADC_WIDTH_MAX_SOC_BITS = static_cast<adc_bits_width_t>(ADC_WIDTH_MAX - 1); static const adc_bits_width_t ADC_WIDTH_MAX_SOC_BITS = static_cast<adc_bits_width_t>(ADC_WIDTH_MAX - 1);
#ifndef SOC_ADC_RTC_MAX_BITWIDTH #ifndef SOC_ADC_RTC_MAX_BITWIDTH
#if USE_ESP32_VARIANT_ESP32S2 #if USE_ESP32_VARIANT_ESP32S2
static const int SOC_ADC_RTC_MAX_BITWIDTH = 13; static const int32_t SOC_ADC_RTC_MAX_BITWIDTH = 13;
#else #else
static const int SOC_ADC_RTC_MAX_BITWIDTH = 12; static const int32_t SOC_ADC_RTC_MAX_BITWIDTH = 12;
#endif #endif
#endif #endif
static const int ADC_MAX = (1 << SOC_ADC_RTC_MAX_BITWIDTH) - 1; // 4095 (12 bit) or 8191 (13 bit) static const int32_t ADC_MAX = (1 << SOC_ADC_RTC_MAX_BITWIDTH) - 1; // 4095 (12 bit) or 8191 (13 bit)
static const int ADC_HALF = (1 << SOC_ADC_RTC_MAX_BITWIDTH) >> 1; // 2048 (12 bit) or 4096 (13 bit) static const int32_t ADC_HALF = (1 << SOC_ADC_RTC_MAX_BITWIDTH) >> 1; // 2048 (12 bit) or 4096 (13 bit)
#endif #endif
#ifdef USE_RP2040 #ifdef USE_RP2040
@ -47,14 +47,21 @@ extern "C"
#endif #endif
#ifdef USE_ESP32 #ifdef USE_ESP32
adc1_config_width(ADC_WIDTH_MAX_SOC_BITS); if (channel1_ != ADC1_CHANNEL_MAX) {
if (!autorange_) { adc1_config_width(ADC_WIDTH_MAX_SOC_BITS);
adc1_config_channel_atten(channel_, attenuation_); if (!autorange_) {
adc1_config_channel_atten(channel1_, attenuation_);
}
} else if (channel2_ != ADC2_CHANNEL_MAX) {
if (!autorange_) {
adc2_config_channel_atten(channel2_, attenuation_);
}
} }
// load characteristics for each attenuation // load characteristics for each attenuation
for (int i = 0; i < (int) ADC_ATTEN_MAX; i++) { for (int32_t i = 0; i < (int32_t) ADC_ATTEN_MAX; i++) {
auto cal_value = esp_adc_cal_characterize(ADC_UNIT_1, (adc_atten_t) i, ADC_WIDTH_MAX_SOC_BITS, auto adc_unit = channel1_ != ADC1_CHANNEL_MAX ? ADC_UNIT_1 : ADC_UNIT_2;
auto cal_value = esp_adc_cal_characterize(adc_unit, (adc_atten_t) i, ADC_WIDTH_MAX_SOC_BITS,
1100, // default vref 1100, // default vref
&cal_characteristics_[i]); &cal_characteristics_[i]);
switch (cal_value) { switch (cal_value) {
@ -136,9 +143,9 @@ void ADCSensor::update() {
#ifdef USE_ESP8266 #ifdef USE_ESP8266
float ADCSensor::sample() { float ADCSensor::sample() {
#ifdef USE_ADC_SENSOR_VCC #ifdef USE_ADC_SENSOR_VCC
int raw = ESP.getVcc(); // NOLINT(readability-static-accessed-through-instance) int32_t raw = ESP.getVcc(); // NOLINT(readability-static-accessed-through-instance)
#else #else
int raw = analogRead(this->pin_->get_pin()); // NOLINT int32_t raw = analogRead(this->pin_->get_pin()); // NOLINT
#endif #endif
if (output_raw_) { if (output_raw_) {
return raw; return raw;
@ -150,29 +157,53 @@ float ADCSensor::sample() {
#ifdef USE_ESP32 #ifdef USE_ESP32
float ADCSensor::sample() { float ADCSensor::sample() {
if (!autorange_) { if (!autorange_) {
int raw = adc1_get_raw(channel_); int32_t raw = -1;
if (channel1_ != ADC1_CHANNEL_MAX) {
raw = adc1_get_raw(channel1_);
} else if (channel2_ != ADC2_CHANNEL_MAX) {
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw);
}
if (raw == -1) { if (raw == -1) {
return NAN; return NAN;
} }
if (output_raw_) { if (output_raw_) {
return raw; return raw;
} }
uint32_t mv = esp_adc_cal_raw_to_voltage(raw, &cal_characteristics_[(int) attenuation_]); uint32_t mv = esp_adc_cal_raw_to_voltage(raw, &cal_characteristics_[(int32_t) attenuation_]);
return mv / 1000.0f; return mv / 1000.0f;
} }
int raw11, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX; int32_t raw11 = ADC_MAX, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX;
adc1_config_channel_atten(channel_, ADC_ATTEN_DB_11);
raw11 = adc1_get_raw(channel_); if (channel1_ != ADC1_CHANNEL_MAX) {
if (raw11 < ADC_MAX) { adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_11);
adc1_config_channel_atten(channel_, ADC_ATTEN_DB_6); raw11 = adc1_get_raw(channel1_);
raw6 = adc1_get_raw(channel_); if (raw11 < ADC_MAX) {
if (raw6 < ADC_MAX) { adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_6);
adc1_config_channel_atten(channel_, ADC_ATTEN_DB_2_5); raw6 = adc1_get_raw(channel1_);
raw2 = adc1_get_raw(channel_); if (raw6 < ADC_MAX) {
if (raw2 < ADC_MAX) { adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_2_5);
adc1_config_channel_atten(channel_, ADC_ATTEN_DB_0); raw2 = adc1_get_raw(channel1_);
raw0 = adc1_get_raw(channel_); if (raw2 < ADC_MAX) {
adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_0);
raw0 = adc1_get_raw(channel1_);
}
}
}
} else if (channel2_ != ADC2_CHANNEL_MAX) {
adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_11);
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw11);
if (raw11 < ADC_MAX) {
adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_6);
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw6);
if (raw6 < ADC_MAX) {
adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_2_5);
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw2);
if (raw2 < ADC_MAX) {
adc2_config_channel_atten(channel2_, ADC_ATTEN_DB_0);
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw0);
}
} }
} }
} }
@ -181,10 +212,10 @@ float ADCSensor::sample() {
return NAN; return NAN;
} }
uint32_t mv11 = esp_adc_cal_raw_to_voltage(raw11, &cal_characteristics_[(int) ADC_ATTEN_DB_11]); uint32_t mv11 = esp_adc_cal_raw_to_voltage(raw11, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_11]);
uint32_t mv6 = esp_adc_cal_raw_to_voltage(raw6, &cal_characteristics_[(int) ADC_ATTEN_DB_6]); uint32_t mv6 = esp_adc_cal_raw_to_voltage(raw6, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_6]);
uint32_t mv2 = esp_adc_cal_raw_to_voltage(raw2, &cal_characteristics_[(int) ADC_ATTEN_DB_2_5]); uint32_t mv2 = esp_adc_cal_raw_to_voltage(raw2, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_2_5]);
uint32_t mv0 = esp_adc_cal_raw_to_voltage(raw0, &cal_characteristics_[(int) ADC_ATTEN_DB_0]); uint32_t mv0 = esp_adc_cal_raw_to_voltage(raw0, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_0]);
// Contribution of each value, in range 0-2048 (12 bit ADC) or 0-4096 (13 bit ADC) // Contribution of each value, in range 0-2048 (12 bit ADC) or 0-4096 (13 bit ADC)
uint32_t c11 = std::min(raw11, ADC_HALF); uint32_t c11 = std::min(raw11, ADC_HALF);
@ -212,7 +243,7 @@ float ADCSensor::sample() {
adc_select_input(pin - 26); adc_select_input(pin - 26);
} }
int raw = adc_read(); int32_t raw = adc_read();
if (this->is_temperature_) { if (this->is_temperature_) {
adc_set_temp_sensor_enabled(false); adc_set_temp_sensor_enabled(false);
} }

20
esphome/components/adc/adc_sensor.h
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@ -19,16 +19,23 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
#ifdef USE_ESP32 #ifdef USE_ESP32
/// Set the attenuation for this pin. Only available on the ESP32. /// Set the attenuation for this pin. Only available on the ESP32.
void set_attenuation(adc_atten_t attenuation) { attenuation_ = attenuation; } void set_attenuation(adc_atten_t attenuation) { attenuation_ = attenuation; }
void set_channel(adc1_channel_t channel) { channel_ = channel; } void set_channel1(adc1_channel_t channel) {
channel1_ = channel;
channel2_ = ADC2_CHANNEL_MAX;
}
void set_channel2(adc2_channel_t channel) {
channel2_ = channel;
channel1_ = ADC1_CHANNEL_MAX;
}
void set_autorange(bool autorange) { autorange_ = autorange; } void set_autorange(bool autorange) { autorange_ = autorange; }
#endif #endif
/// Update adc values. /// Update ADC values
void update() override; void update() override;
/// Setup ADc /// Setup ADC
void setup() override; void setup() override;
void dump_config() override; void dump_config() override;
/// `HARDWARE_LATE` setup priority. /// `HARDWARE_LATE` setup priority
float get_setup_priority() const override; float get_setup_priority() const override;
void set_pin(InternalGPIOPin *pin) { this->pin_ = pin; } void set_pin(InternalGPIOPin *pin) { this->pin_ = pin; }
void set_output_raw(bool output_raw) { output_raw_ = output_raw; } void set_output_raw(bool output_raw) { output_raw_ = output_raw; }
@ -52,9 +59,10 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
#ifdef USE_ESP32 #ifdef USE_ESP32
adc_atten_t attenuation_{ADC_ATTEN_DB_0}; adc_atten_t attenuation_{ADC_ATTEN_DB_0};
adc1_channel_t channel_{}; adc1_channel_t channel1_{ADC1_CHANNEL_MAX};
adc2_channel_t channel2_{ADC2_CHANNEL_MAX};
bool autorange_{false}; bool autorange_{false};
esp_adc_cal_characteristics_t cal_characteristics_[(int) ADC_ATTEN_MAX] = {}; esp_adc_cal_characteristics_t cal_characteristics_[(int32_t) ADC_ATTEN_MAX] = {};
#endif #endif
}; };

40
esphome/components/adc/sensor.py
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@ -1,5 +1,7 @@
import esphome.codegen as cg import esphome.codegen as cg
import esphome.config_validation as cv import esphome.config_validation as cv
import esphome.final_validate as fv
from esphome.core import CORE
from esphome.components import sensor, voltage_sampler from esphome.components import sensor, voltage_sampler
from esphome.components.esp32 import get_esp32_variant from esphome.components.esp32 import get_esp32_variant
from esphome.const import ( from esphome.const import (
@ -8,15 +10,15 @@ from esphome.const import (
CONF_NUMBER, CONF_NUMBER,
CONF_PIN, CONF_PIN,
CONF_RAW, CONF_RAW,
CONF_WIFI,
DEVICE_CLASS_VOLTAGE, DEVICE_CLASS_VOLTAGE,
STATE_CLASS_MEASUREMENT, STATE_CLASS_MEASUREMENT,
UNIT_VOLT, UNIT_VOLT,
) )
from esphome.core import CORE
from . import ( from . import (
ATTENUATION_MODES, ATTENUATION_MODES,
ESP32_VARIANT_ADC1_PIN_TO_CHANNEL, ESP32_VARIANT_ADC1_PIN_TO_CHANNEL,
ESP32_VARIANT_ADC2_PIN_TO_CHANNEL,
validate_adc_pin, validate_adc_pin,
) )
@ -25,7 +27,23 @@ AUTO_LOAD = ["voltage_sampler"]
def validate_config(config): def validate_config(config):
if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto": if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto":
raise cv.Invalid("Automatic attenuation cannot be used when raw output is set.") raise cv.Invalid("Automatic attenuation cannot be used when raw output is set")
return config
def final_validate_config(config):
if CORE.is_esp32:
variant = get_esp32_variant()
if (
CONF_WIFI in fv.full_config.get()
and config[CONF_PIN][CONF_NUMBER]
in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
):
raise cv.Invalid(
f"{variant} doesn't support ADC on this pin when Wi-Fi is configured"
)
return config return config
@ -55,6 +73,8 @@ CONFIG_SCHEMA = cv.All(
validate_config, validate_config,
) )
FINAL_VALIDATE_SCHEMA = final_validate_config
async def to_code(config): async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID]) var = cg.new_Pvariable(config[CONF_ID])
@ -81,5 +101,15 @@ async def to_code(config):
if CORE.is_esp32: if CORE.is_esp32:
variant = get_esp32_variant() variant = get_esp32_variant()
pin_num = config[CONF_PIN][CONF_NUMBER] pin_num = config[CONF_PIN][CONF_NUMBER]
chan = ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant][pin_num] if (
cg.add(var.set_channel(chan)) variant in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL
and pin_num in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]
):
chan = ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant][pin_num]
cg.add(var.set_channel1(chan))
elif (
variant in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL
and pin_num in ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant]
):
chan = ESP32_VARIANT_ADC2_PIN_TO_CHANNEL[variant][pin_num]
cg.add(var.set_channel2(chan))