void setup() {
 volatile char *dirf, *dataf, *dirk, *datak,*inpk;
dirf=0x30; *dirf=0xFF;
dirk=0x107; *dirk=00; inpk=0x106; 
dataf=0x31;
Serial.begin(115200);
while(1){
  if(*inpk!=0){
    *dataf=0x11;
    Serial.println("led blinking..........");
    for(volatile long i=0;i<100000;i++);
    *dataf=0x00;
    for(volatile long i=0;i<100000;i++);
  }
}

}

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

}