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[adc] Fix 11db deprecation warning (#6749)

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This commit is contained in:
Jesse Hills 2024-05-15 12:51:01 +12:00
parent bd8afa51cd
commit ebc3f0fe17
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GPG Key ID: BEAAE804EFD8E83A
4 changed files with 63 additions and 22 deletions
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14
esphome/components/adc/__init__.py
View File

@ -18,11 +18,23 @@ from esphome.components.esp32.const import (
CODEOWNERS = ["@esphome/core"]
adc_ns = cg.esphome_ns.namespace("adc")
"""
From the below patch versions (and 5.2+) ADC_ATTEN_DB_11 is deprecated and replaced with ADC_ATTEN_DB_12.
4.4.7
5.0.5
5.1.3
5.2+
"""
ATTENUATION_MODES = {
"0db": cg.global_ns.ADC_ATTEN_DB_0,
"2.5db": cg.global_ns.ADC_ATTEN_DB_2_5,
"6db": cg.global_ns.ADC_ATTEN_DB_6,
"11db": cg.global_ns.ADC_ATTEN_DB_11,
"11db": adc_ns.ADC_ATTEN_DB_12_COMPAT,
"12db": adc_ns.ADC_ATTEN_DB_12_COMPAT,
"auto": "auto",
}

30
esphome/components/adc/adc_sensor.cpp
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@ -62,7 +62,7 @@ extern "C"
}
// load characteristics for each attenuation
for (int32_t i = 0; i <= ADC_ATTEN_DB_11; i++) {
for (int32_t i = 0; i <= ADC_ATTEN_DB_12_COMPAT; i++) {
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
@ -118,8 +118,8 @@ void ADCSensor::dump_config() {
case ADC_ATTEN_DB_6:
ESP_LOGCONFIG(TAG, " Attenuation: 6db");
break;
case ADC_ATTEN_DB_11:
ESP_LOGCONFIG(TAG, " Attenuation: 11db");
case ADC_ATTEN_DB_12_COMPAT:
ESP_LOGCONFIG(TAG, " Attenuation: 12db");
break;
default: // This is to satisfy the unused ADC_ATTEN_MAX
break;
@ -183,12 +183,12 @@ float ADCSensor::sample() {
return mv / 1000.0f;
}
int raw11 = ADC_MAX, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX;
int raw12 = ADC_MAX, raw6 = ADC_MAX, raw2 = ADC_MAX, raw0 = ADC_MAX;
if (channel1_ != ADC1_CHANNEL_MAX) {
adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_11);
raw11 = adc1_get_raw(channel1_);
if (raw11 < ADC_MAX) {
adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_12_COMPAT);
raw12 = adc1_get_raw(channel1_);
if (raw12 < ADC_MAX) {
adc1_config_channel_atten(channel1_, ADC_ATTEN_DB_6);
raw6 = adc1_get_raw(channel1_);
if (raw6 < ADC_MAX) {
@ -201,9 +201,9 @@ float ADCSensor::sample() {
}
}
} 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_12_COMPAT);
adc2_get_raw(channel2_, ADC_WIDTH_MAX_SOC_BITS, &raw12);
if (raw12 < 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) {
@ -217,25 +217,25 @@ float ADCSensor::sample() {
}
}
if (raw0 == -1 || raw2 == -1 || raw6 == -1 || raw11 == -1) {
if (raw0 == -1 || raw2 == -1 || raw6 == -1 || raw12 == -1) {
return NAN;
}
uint32_t mv11 = esp_adc_cal_raw_to_voltage(raw11, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_11]);
uint32_t mv12 = esp_adc_cal_raw_to_voltage(raw12, &cal_characteristics_[(int32_t) ADC_ATTEN_DB_12_COMPAT]);
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_[(int32_t) ADC_ATTEN_DB_2_5]);
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)
uint32_t c11 = std::min(raw11, ADC_HALF);
uint32_t c12 = std::min(raw12, ADC_HALF);
uint32_t c6 = ADC_HALF - std::abs(raw6 - ADC_HALF);
uint32_t c2 = ADC_HALF - std::abs(raw2 - ADC_HALF);
uint32_t c0 = std::min(ADC_MAX - raw0, ADC_HALF);
// max theoretical csum value is 4096*4 = 16384
uint32_t csum = c11 + c6 + c2 + c0;
uint32_t csum = c12 + c6 + c2 + c0;
// each mv is max 3900; so max value is 3900*4096*4, fits in unsigned32
uint32_t mv_scaled = (mv11 * c11) + (mv6 * c6) + (mv2 * c2) + (mv0 * c0);
uint32_t mv_scaled = (mv12 * c12) + (mv6 * c6) + (mv2 * c2) + (mv0 * c0);
return mv_scaled / (float) (csum * 1000U);
}
#endif // USE_ESP32

23
esphome/components/adc/adc_sensor.h
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@ -1,19 +1,34 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/core/hal.h"
#include "esphome/core/defines.h"
#include "esphome/components/sensor/sensor.h"
#include "esphome/components/voltage_sampler/voltage_sampler.h"
#include "esphome/core/component.h"
#include "esphome/core/defines.h"
#include "esphome/core/hal.h"
#ifdef USE_ESP32
#include "driver/adc.h"
#include <esp_adc_cal.h>
#include "driver/adc.h"
#endif
namespace esphome {
namespace adc {
#ifdef USE_ESP32
// clang-format off
#if (ESP_IDF_VERSION_MAJOR == 4 && ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 4, 7)) || \
(ESP_IDF_VERSION_MAJOR == 5 && \
((ESP_IDF_VERSION_MINOR == 0 && ESP_IDF_VERSION_PATCH >= 5) || \
(ESP_IDF_VERSION_MINOR == 1 && ESP_IDF_VERSION_PATCH >= 3) || \
(ESP_IDF_VERSION_MINOR >= 2)) \
)
// clang-format on
static const adc_atten_t ADC_ATTEN_DB_12_COMPAT = ADC_ATTEN_DB_12;
#else
static const adc_atten_t ADC_ATTEN_DB_12_COMPAT = ADC_ATTEN_DB_11;
#endif
#endif // USE_ESP32
class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
public:
#ifdef USE_ESP32

18
esphome/components/adc/sensor.py
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@ -1,3 +1,5 @@
import logging
import esphome.codegen as cg
import esphome.config_validation as cv
import esphome.final_validate as fv
@ -19,16 +21,29 @@ from . import (
ATTENUATION_MODES,
ESP32_VARIANT_ADC1_PIN_TO_CHANNEL,
ESP32_VARIANT_ADC2_PIN_TO_CHANNEL,
adc_ns,
validate_adc_pin,
)
_LOGGER = logging.getLogger(__name__)
AUTO_LOAD = ["voltage_sampler"]
_attenuation = cv.enum(ATTENUATION_MODES, lower=True)
def validate_config(config):
if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto":
raise cv.Invalid("Automatic attenuation cannot be used when raw output is set")
if config.get(CONF_ATTENUATION) == "11db":
_LOGGER.warning(
"`attenuation: 11db` is deprecated, use `attenuation: 12db` instead"
)
# Alter value here so `config` command prints the recommended change
config[CONF_ATTENUATION] = _attenuation("12db")
return config
@ -47,7 +62,6 @@ def final_validate_config(config):
return config
adc_ns = cg.esphome_ns.namespace("adc")
ADCSensor = adc_ns.class_(
"ADCSensor", sensor.Sensor, cg.PollingComponent, voltage_sampler.VoltageSampler
)
@ -65,7 +79,7 @@ CONFIG_SCHEMA = cv.All(
cv.Required(CONF_PIN): validate_adc_pin,
cv.Optional(CONF_RAW, default=False): cv.boolean,
cv.SplitDefault(CONF_ATTENUATION, esp32="0db"): cv.All(
cv.only_on_esp32, cv.enum(ATTENUATION_MODES, lower=True)
cv.only_on_esp32, _attenuation
),
}
)