adc.h

Go to the documentation of this file.

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

// TYPES

typedef struct hw_adc_t hw_adc_t;

typedef bool (*hw_adc_dma_callback_t)(hw_adc_t *adc, uint16_t *buf,
                                      size_t samples, void *userdata);

// LIFECYCLE

hw_adc_t *hw_adc_init_pin(hw_gpio_t *gpio);

hw_adc_t *hw_adc_init_temperature(void);

void hw_adc_deinit(hw_adc_t *adc);

uint8_t hw_adc_count(void);

uint8_t hw_adc_gpio_channel(uint8_t pin);

uint8_t hw_adc_gpio_pin(uint8_t channel);

// METHODS

uint16_t hw_adc_read_12(hw_adc_t *adc, uint16_t num_samples);

uint16_t hw_adc_read_16(hw_adc_t *adc, uint16_t num_samples);

float hw_adc_read_voltage(hw_adc_t *adc, uint16_t num_samples);

float hw_adc_read_temperature(hw_adc_t *adc, uint16_t num_samples);

bool hw_adc_read_dma(hw_adc_t *adc, uint16_t *buf, size_t samples,
                     size_t partitions, uint32_t freq,
                     hw_adc_dma_callback_t callback, void *userdata);