#include "setup.h"
void reverse_paired_led();
#define MAX 4
#define DELAY 30000

int main()

{
  init_port(0x21);//DDRA
  init_port(0x24);//DDRB

  while(1)
  {
    reverse_paired_led(0x22,0x25); 
  }
}


void reverse_paired_led(volatile long port1,volatile long port2)
{
    volatile long i;
    long res;
    long j=7;
    while(j>=0)
    {
      res=expo(2,j);
      out(res,port1);
      out(res,port2);
      for(i=0;i<DELAY;i++);
      j--;
    }

}