#include <avr/io.h>

#define nop() {asm("nop");}

void right (void);
void left (void);

int x, j, m=100;

////////function delay//////////
void delay(int t)
{
for (x=0; x<t ;x++)
nop (); 
}
///////////////////////////////

////////////long delay/////////
void long_delay(int p)
{
for (j=0; j<p; j++)
	{
	delay(300);
	}
}
//////////////////////////////

void right (void)
{
PORTD = 0b10011001;
long_delay(m);

PORTD = 0b01010101;
long_delay(m);

PORTD = 0b01100110;
long_delay(m);

PORTD = 0b10101010;
long_delay(m);
}

void left(void)
{
PORTD = 0b10101010;
long_delay(m);

PORTD = 0b01100110;
long_delay(m);

PORTD = 0b01010101;
long_delay(m);

PORTD = 0b10011001;
long_delay(m);
}


int main(void)
{
DDRD = 0xFF;
PORTD = 0x00;


while(1)
{


left();
left();
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right();
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/*

m=m+1;
if(m==350)
{m=1;}
*/
}
}