/*****************************************************
Project : LED Flasher 
Author  : Reza Sepas Yar                      
Company : Pishro Noavaran Kavosh                            
Chip type           : ATmega16
Clock frequency     : 4.000000 MHz
*****************************************************/

#include<mega16.h>
#include<delay.h>
#define xtal 4000000

int i;

void main (void)
{
	
	DDRD = 0xFF;
	
	while(1)
	{
	
		for(i = 1; i <= 128; i = i*2)
		{
			PORTD = i;
			delay_ms(100);
		}	
			
		for(i = 128; i > 1; i = i/2)
		{
			PORTD = i;
			delay_ms(250);
		}	
		
	}
	
}