esphome/esphome/components/adc/adc_sensor.h
2024-05-16 14:11:21 +12:00

92 lines
2.6 KiB
C++

#pragma once
#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 <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
/// Set the attenuation for this pin. Only available on the ESP32.
void set_attenuation(adc_atten_t attenuation) { this->attenuation_ = attenuation; }
void set_channel1(adc1_channel_t channel) {
this->channel1_ = channel;
this->channel2_ = ADC2_CHANNEL_MAX;
}
void set_channel2(adc2_channel_t channel) {
this->channel2_ = channel;
this->channel1_ = ADC1_CHANNEL_MAX;
}
void set_autorange(bool autorange) { this->autorange_ = autorange; }
#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(InternalGPIOPin *pin) { this->pin_ = pin; }
void set_output_raw(bool output_raw) { this->output_raw_ = output_raw; }
void set_sample_count(uint8_t sample_count);
float sample() override;
#ifdef USE_ESP8266
std::string unique_id() override;
#endif
#ifdef USE_RP2040
void set_is_temperature() { this->is_temperature_ = true; }
#endif
protected:
InternalGPIOPin *pin_;
bool output_raw_{false};
uint8_t sample_count_{1};
#ifdef USE_RP2040
bool is_temperature_{false};
#endif
#ifdef USE_ESP32
adc_atten_t attenuation_{ADC_ATTEN_DB_0};
adc1_channel_t channel1_{ADC1_CHANNEL_MAX};
adc2_channel_t channel2_{ADC2_CHANNEL_MAX};
bool autorange_{false};
#if ESP_IDF_VERSION_MAJOR >= 5
esp_adc_cal_characteristics_t cal_characteristics_[SOC_ADC_ATTEN_NUM] = {};
#else
esp_adc_cal_characteristics_t cal_characteristics_[ADC_ATTEN_MAX] = {};
#endif
#endif
};
} // namespace adc
} // namespace esphome