#include "all.h"

void setup() {
  // put your setup code here, to run once:
  init_port();

}

void loop() {
  // put your main code here, to run repeatedly:
  char x;
  volatile long i;
  //right to left
  for(x=8;x>0;x--){  //this is from left to right MSB to LSB

    output((1<<x));  // here intially for x=8 output is 1000 000 then subseq 1 is shifted from this 0000 0001
    for(i=0; i<600000 ; i++);
  }

  for(x=0;x<8;x++){ //this is from right to left LSB to MSB

    output((1<<x));
    for(i=0;i<600000 ; i++);
  }

}