/*
 * adc.c
 *
 *  Created on: 11.03.2015
 *      Author: dode@luniks.net
 *
 */
#include <avr/interrupt.h>
#include <avr/sleep.h>

EMPTY_INTERRUPT(ADC_vect);

void setupADC(void) {
	ADMUX |= (1 << REFS0); // use AVCC as reference voltage
	// ADCSRA |= (1 << ADPS1) | (1 << ADPS2); // ADC clock prescaler /64
	ADCSRA |= (1 << ADPS2); // ADC clock prescaler /16
	ADCSRA |= (1 << ADEN); // enable ADC
}

void setupSleepMode(void) {
	set_sleep_mode(SLEEP_MODE_ADC);
	ADCSRA |= (1 << ADIE); // enable ADC interrupt
	sei(); // enable global interrupts
}