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

  volatile char *ddr=(char*)0x30;
  *ddr=0xFF;
  ddr=0x107;
  *ddr=0xFF;

}

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

  volatile char *op1=(char*)0x31,*cat=(char*)0x108;
 volatile long i;
  *cat=0xFF;
  //
  *op1=0x5B;
  *cat=0x02;
  //
  *cat=0xFF;
  //
  *op1=0x4F; 
  *cat=0x01;
}