/*
 * AVRGCC1.c
 *
 * Created: 22.03.2012 21:17:34
 *  Author: Besitzer
 */ 
#define F_CPU 1000000UL
#define RED 		PC5
#define GREEN		PC4
#define BLUE 		PC3
#define RGB_PORT	PORTC
#define RGB_DDR		DDRC
#include <stdint.h>
#include <avr/io.h>
#include <util/delay.h>
int main(void){


uint16_t i=0;
uint16_t k=0;
{RGB_DDR=255;
	
    while(1) {

		
		RGB_PORT &= ~_BV(RED) & ~_BV(GREEN) & ~_BV(BLUE);			//alle aus
		_delay_ms(1000);							//pause
		RGB_PORT |= _BV(RED) | _BV(GREEN) | _BV(BLUE);				//alle an
		_delay_ms(1000);							//pause
		RGB_PORT &= ~_BV(RED) & ~_BV(GREEN) & ~_BV(BLUE);			//alle aus
		_delay_ms(1000);							//alle an

		for (k=0;k<=1530;++k) {							//Zählschleife, eine Regebogendurchlauf


		for (i=0;i<=255;++i) {							//Zählschleife, hoch, runter dimmen


		if (0<k && k<=255) {							//Stufe 1: rot an, blau hochdimmen

				RGB_PORT |= _BV(RED);
				if (i<=k) RGB_PORT |= _BV(BLUE);
				else RGB_PORT &= ~_BV(BLUE);}

		else if (255<k && k<=510){						//Stufe 2: blau an, rot runter

				RGB_PORT |= _BV(BLUE);
				if (!(i<=(k-255))) RGB_PORT |= _BV(RED); //!
				else RGB_PORT &= ~_BV(RED);}

		else if (510<k && k<=765){						//Stufe 3: blau an, grün hoch

				RGB_PORT |= _BV(BLUE);
				if (i<=(k-510)) RGB_PORT |=_BV(GREEN);
				else RGB_PORT &=~_BV(GREEN);}

		else if (765<k && k<=1020){						//Stufe 4: grün an, blau runter

				RGB_PORT |= _BV(GREEN);
				if (!(i<=(k-765))) RGB_PORT |= _BV(BLUE); //!
				else RGB_PORT &= ~_BV(BLUE);}	

		else if (1020<k && k<=1275){						//Stufe 5: grün an, rot hoch
				RGB_PORT |= _BV(GREEN);
				if (i<=(k-1020)) RGB_PORT |= _BV(RED);
				else RGB_PORT &= ~_BV(RED);}

		else if (1275<k && k<=1530)						//Stufe 6: rot an, grün runter

				RGB_PORT |= _BV(RED);
				if (!(i<=(k-1275))) RGB_PORT |= _BV(GREEN); //!
				else RGB_PORT &= ~_BV(GREEN); }


	}
	}
	}
	}