/*
 * adc.h
 *
 *  Created on: 08.02.2019
 *      Author: julian
 */

#ifndef ADC_H_
#define ADC_H_

#include <stdint.h>

typedef uint16_t adc_sample_t;

typedef struct {
	adc_sample_t * ptr;
	uint8_t size;
} adc_buffer_t;

typedef void (*adc_interrupt_t)(volatile adc_buffer_t * buf);

typedef struct adc {
	adc_buffer_t buffer;

	uint8_t current_channel;
	adc_sample_t * current_sample;
	uint8_t channel_mask;

	adc_interrupt_t interrupt;
} adc_t;

// the adc instance
extern volatile adc_t adc;

enum {
	ADC_CHANNEL_0 = 0x01,
	ADC_CHANNEL_1 = 0x02,
	ADC_CHANNEL_2 = 0x04,
	ADC_CHANNEL_3 = 0x08,
	ADC_CHANNEL_4 = 0x10,
	ADC_CHANNEL_5 = 0x20,
	ADC_CHANNEL_6 = 0x40,
	ADC_CHANNEL_7 = 0x80,
	ADC_CHANNEL_ALL = 0xFF,
};


void adc_init(adc_buffer_t buffer, uint8_t channel_mask);

void adc_on_done(adc_interrupt_t interrupt);

void adc_start();
void adc_stop();

#endif /* ADC_H_ */