adc.c


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#include "adc.h"

#include <avr/io.h>


void initADC() {
  ADMUX = (1<<REFS0); 
  ADCSRA = (1<<ADEN)|(1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0); 
}

uint16_t getADCValue(int port) {
  ADMUX = (1<<REFS0)|(1<<ADLAR)|(port&0x07);
  ADCSRA |= (1<<ADSC);
  
  while(!(ADCSRA & (1<<ADIF)));
  
  return ADC;
}