battery_sensor.h

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#ifndef BATTERY_SENSOR_H
#define BATTERY_SENSOR_H
 
#include "driver/gpio.h"
#include "esp_err.h"
#include "general/adc.h"
 
#define VOLTAGE_MULTIPLIER   2.0f
#define BATTERY_SERIES_COUNT 3
#define BATTERY_DURACELL_AA  1
 
typedef struct
{
    adc_channel_t channel_pin;
    uint8_t percentage;
    float voltage_v;
 
    adc_sensor _adc; // only internal use
} battery_sensor;
 
esp_err_t battery_sensor_init(battery_sensor* sensor);
 
esp_err_t battery_sensor_read(battery_sensor* sensor);
 
#endif