#ifndef BATTERY_H
#define BATTERY_H

#include "nvs_flash.h"
#include "esp_adc/adc_oneshot.h"
#include "esp_adc/adc_cali.h"

struct battery_data {
	uint8_t battery_percent;
	uint16_t min_mv; // 0% in mV
	uint16_t scale; // scaling between mV reading and percent
};
typedef struct battery_data battery_data_t;

struct battery_conf {
	battery_data_t* data;
	adc_channel_t adc_channel;
	adc_oneshot_unit_handle_t adc_handle;
	adc_cali_handle_t cali_handle;
	uint16_t poll_delay;
  uint8_t read_retry_nb;
};
typedef struct battery_conf battery_conf_t;

battery_conf_t* get_battery_configuration(nvs_handle_t nvs);

void init_battery_level_adc(battery_conf_t* batt_conf);
void update_battery_level(battery_conf_t* batt_conf);

#endif