adc.h

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#pragma once
#include "gpio.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

// TYPES

typedef struct hw_adc_t {
  uint8_t channel; 
  hw_gpio_t gpio;  
} hw_adc_t;

// LIFECYCLE

uint8_t hw_adc_count(void);

hw_adc_t hw_adc_init_pin(uint8_t pin);

hw_adc_t hw_adc_init_temperature();

void hw_adc_finalize(hw_adc_t *adc);

// METHODS

uint8_t hw_adc_gpio_channel(uint8_t gpio);

static inline bool hw_adc_valid(hw_adc_t *adc) {
  return adc && adc->channel < hw_adc_count();
}

uint16_t hw_adc_read(hw_adc_t *adc);

float hw_adc_read_voltage(hw_adc_t *adc);

float hw_adc_read_temperature(hw_adc_t *adc);