Subversion Repositories group.electronics

#include <avr/io.h>

#include "util.h"

#include <util/delay.h>

#include <stdlib.h>

inline uint8_t map_8(uint8_t x, uint8_t in_min, uint8_t in_max, uint8_t out_min, uint8_t out_max) {

	return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;

}

uint8_t analogRead(uint8_t channel) {

        ADMUX = (1<<ADLAR) | (1<<REFS0) | (0<<REFS1) | (channel & 0x0f);

        ADCSRA |= (1<<ADSC);            // Start converting

        while (((ADCSRA >> ADSC) & 1)) {}       //Wait until conversion finished

        uint8_t result = ADCH;

        //ADCSRA |= (0<<ADSC);          // Stop converting

        return result;

}

void analogInit() {

	ACSR |= (1<<ACD); // Disable analog comparator

	/*

        Setup ADC

        ADMUX: 8 bit mode, Avcc ref

        ADCSRA: Enable, 128 prescale

	*/

	ADMUX = (1<<ADLAR) | (0<<REFS0) | (1<<REFS1);

	ADCSRA = (1<<ADEN) | (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0) ;

}

char* tick_addr;

void sysclockInit(void) {

	TIMSK0 = (1<<TOIE0);		// Eable timer overflow for Timer0

	TCNT0 = 0x00;				// Set Timer0 to 0

	TCCR0B = (1<< CS00) ;		// /1 prescaler

	//tick_addr = func;

}