#include "ecen.h"
#define DELAY 1000

void setup() {
    volatile char *dir_A=0x21 , *dir_B=0x24;
    *dir_A = 0xff, *dir_B = 0xff;
}
void loop() {
  volatile long k;
  outB(0xbf);
  outA(0xf8);
  for(k=0;k<DELAY;k++);
  outA(0x00);

  outB((0xfe));
  outA(0xf8);
  for(k=0;k<DELAY;k++);
  outA(0x00);
  
  outB(0x80);
  outA(0x20);
  for(k=0;k<DELAY;k++);
  outA(0x00);

  for(int i=0;i<4;i++){
    outB(~(8<<i));
    outA(1<<i);
    for(k=0;k<DELAY;k++);
    outA(0x00);
    
  }
  
  for(int i=0;i<4;i++){
    outB(~(8>>i));
    outA(1<<i);
    for(k=0;k<DELAY;k++);
    outA(0x00);
  }
  }