adc.c

#include "global.h"

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stdlib.h>
#include <stdio.h>

#include "adc.h"
#include "usart.h"
#include "clock.h"

int16_t reading;

int main(void) {
  sysclk_init();
  sei();

  usart_init(usart_d0, 128, 128);
  usart_conf(usart_d0, 9600, 8, none, 1, 0, NULL);
  usart_map_stdio(usart_d0);
  usart_run(usart_d0);

  adc_init(adc_signed, adc_vref_intvcc16, 12, adc_div512);

  PORTE.DIRSET = PIN3_bm;

  while (1) {
    adc_conf(0, adc_singleend, 1, 0);
    reading = adc_conv_blocking(0, 10, 10);
    printf("PA1 reading: %i\r\n", reading);

    adc_conf(0, adc_singleend, 2, 0);
    reading = adc_conv_blocking(0, 10, 10);
    printf("PA2 reading: %i\r\n", reading);

    adc_conf(0, adc_singleend, 3, 0);
    reading = adc_conv_blocking(0, 10, 10);
    printf("PA3 reading: %i\r\n", reading);

    PORTE.OUTTGL = PIN3_bm;
    _delay_ms(1000);
  }

  return 0; 
}