void setup() {
  // put your setup code here, to run once:
  volatile char *dirf,*dirk;
  volatile char *outf, *ink;
  dirf = 0x30; dirk = 0x107;
  outf = 0x31; ink = 0x106;
  *dirf = 0x01;
  *outf = 0x01;
}

void loop() {
  // put your main code here, to run repeatedly:

}