#include <avr/io.h>

// Last modified: 26 October 2006
// Changed to work with WinAVR 20060421
// modified: 21 April 2005


// Compiled on WinAVR 20060421

//---------------------
// function prototypes
void delay(void);
int main(void);
//---------------------



void delay(void)
{
uint32_t waitcounter;
	waitcounter = 2000;	
	while(0 != waitcounter) {
		waitcounter--;
	}	
}

int main(void)
{
uint8_t ctr;
int i;
//---------
// initialise the hardware
	DDRA = 0x03;
	PORTA = 0x00;
	DDRB = 0x1F;
	PORTB = 0x00;
	DDRD = 0x7C;
	PORTD = 0x00;
//---------
// the main loop
	while(1) {
		for (ctr=0; ctr<8; ctr++){
			for (i=0; i<300; i++) {
			// LED 0
				// set color
				PORTB = ctr*4;
				// turn on LED
				PORTA |= 0x01;
				// the delay
				delay();
				//turon off LED
				PORTA &= 0xFE;
			// LED 1
				// set color
				PORTB = ((ctr+1)%8)*4;
				// turn on LED
				PORTA |= 0x02;
				// the delay
				delay();
				//turon off LED
				PORTA &= 0xFD;
			// LED 2
				// set color
				PORTB = ((ctr+2)%8)*4;
				// turn on LED
				PORTB |= 0x01;
				// the delay
				delay();
				//turon off LED
				PORTB &= 0xFE;
			// LED 3
				// set color
				PORTB = ((ctr+3)%8)*4;
				// turn on LED
				PORTB |= 0x02;
				// the delay
				delay();
				//turon off LED
				PORTB &= 0xFD;
			// LED 4
				// set color
				PORTB = ((ctr+4)%8)*4;
				// turn on LED
				PORTD |= 0x04;
				// the delay
				delay();
				//turon off LED
				PORTD &= 0xFB;
			// LED 5
				// set color
				PORTB = ((ctr+5)%8)*4;
				// turn on LED
				PORTD |= 0x08;
				// the delay
				delay();
				//turon off LED
				PORTD &= 0xF7;
			// LED 6
				// set color
				PORTB = ((ctr+6)%8)*4;
				// turn on LED
				PORTD |= 0x10;
				// the delay
				delay();
				//turon off LED
				PORTD &= 0xEF;
			// LED 7
				// set color
				PORTB = ((ctr+7)%8)*4;
				// turn on LED
				PORTD |= 0x20;
				// the delay
				delay();
				//turon off LED
				PORTD &= 0xDF;
			// LED 8
				// set color
				PORTB = ((ctr+8)%8)*4;
				// turn on LED
				PORTD |= 0x40;
				// the delay
				delay();
				//turon off LED
				PORTD &= 0xBF;
			}
		}
	}
//---------

}