void setup() {
  // put your setup code here, to run once:
volatile char *directionK;
  directionK=0x107;
  *directionK=0xff;
}

void loop() {
  // put your main code here, to run repeatedly:
volatile char *outputK;
  outputK=0x108;
  int a=0;
  while(1){
    *outputK=0x01;
    a++;
    if(a == 65536){
      break;
    }
  }
  *outputK=0x02;
  for(volatile long i = 0; i < 200000; i++);
}