void setup() {
  // put your setup code here, to run once:
  //port F
  volatile char *dirf;
  dirf = 0x30;
  *dirf = 0xFF;

  //port K
  volatile char *dirk;
  dirk = 0x107;
  *dirk = 0xFF;

}

void loop() {
  // put your main code here, to run repeatedly:
  
  //PortF : A0 to A7
  volatile char *dataf;
  dataf = 0x31;
  *dataf = 0x5B;

  //PortK : A8 to A15
  volatile char *datak;
  datak = 0x108;
  *datak = 0x6D;
}