/*
 * led.c
 *
 * Created: 06.10.2013 16:32:15
 *  Author: netz
 */ 

#include <avr/io.h>
#include "led.h"

void led(int mask) {
	int rgb = 0;
	rgb |= (mask & (1<<0)) ? (1<<0) : (0<<0);
	rgb |= (mask & (1<<1)) ? (1<<1) : (0<<1);
	rgb |= (mask & (1<<2)) ? (1<<2) : (0<<2);
	
	PORTB &= ~((1<<PINB5) | (1<<PINB6) | (1<<PINB7));
	PORTB |= (rgb<<PINB5);
}

void init_led()
{
	DDRB |= (1<<PINB7) | (1<<PINB6) | (1<<PINB5);
}

void fade(int from, int to, int dur) {
	for (int i=0;i<0xFF;i++) {
		for(int k=0;k<dur;k++) {
			for (int j=i;j<0xFF;j++) {
				led(from);
			}
			for (int j=0;j<i;j++) {
				led(to);
			}
		}
	}
}

void led_rainbow(uint8_t t) {
	fade(WHITE, RED, 10);
	while(1) {
		fade(RED, YELLOW, t);
		fade(YELLOW, GREEN, t);
		fade(GREEN, CYAN, t);
		fade(CYAN, BLUE, t);
		fade(BLUE, MAGENTA, t);
		fade(MAGENTA, RED, t);
	}
}