#ifndef _PRST_ADC_H_
#define _PRST_ADC_H_

#include <stdint.h>

typedef struct prst_adc_batt_val {
  int16_t raw;
  uint16_t millivolts;
  double voltage;
} prst_adc_batt_read_t;

typedef struct prst_adc_soil_moisture {
  int16_t raw;
  // A value from 0 (completely dry) to 2^10 (completely wet).
  uint16_t relative;
  double percentage;
} prst_adc_soil_moisture_t;

typedef struct prst_adc_photo_sensor {
  int16_t raw;
  // A value from 0x0000 (no light) 0xffff (direct sun).
  // Might need calibration.
  double voltage;
  uint16_t brightness;
} prst_adc_photo_sensor_t;

void prst_adc_init();

prst_adc_batt_read_t prst_adc_batt_read();

prst_adc_soil_moisture_t prst_adc_soil_read(double battery_voltage);

prst_adc_photo_sensor_t prst_adc_photo_read(double battery_voltage);

#endif  // _PRST_ADC_H_