#include "setup.h"

int main()

{
  init_port(0x21);//DDRA
  init_port(0x24);//DDRB
  volatile long i;
  long j,k,res;
  while(1)
  {
    volatile long out_address=0x22;//first we start with port A
    j=0;
    while(j<8)
    {
      res=expo(2,j);
      out(res,out_address);
      for(i=0;i<30000;i++);

      j++;
    }
    out(0x00,out_address);
    out_address=0x25;//after port A is complete we go to port B
    j=0;
    while(j<8)
    {
      res=expo(2,j);
      out(res,out_address);
      for(i=0;i<30000;i++);
      j++;
    }
    out(0x00,out_address);

    out_address=0x25;
    j=7;
    while(j>=0)
    {
      res=expo(2,j);
      out(res,out_address);
      for(i=0;i<30000;i++);
      j--;
    }
    out(0x00,out_address);

    out_address=0x22;
    j=7;
    while(j>=0)
    {
      res=expo(2,j);
      out(res,out_address);
      for(i=0;i<30000;i++);
      j--;
    }
    out(0x00,out_address);
  }
}