#include "TSTKeypad.h"
void setup() {
  // put your setup code here, to run once:
    volatile char *dir_f= 0x30, *dir_k = 0x107, *dir_a = 0x21;
    *dir_f=0x0f;
    *dir_k = 0x00;
    *dir_a = 0x0f;

}

void loop() {
/*  // put your main code here, to run repeatedly:
    volatile char *out_f=0x31, *in_k=0x106, *out_a= 0x22 ,*out_k=0x108;
    *out_a = (char*) Scan();
    volatile long j;
    for(j=0; j<50000; j++);
    // on Keypad if you once press a switch, it will be on until you press next one.
    //these lines used for verify this functionlity
    //*out_a =0x00;
    //for(j=0; j<50000; j++);
*/
  volatile char *out_f=0x31, *in_k=0x106, *out_a= 0x22 ,*out_k=0x108;
  volatile long j;
  long i;
  //*out_a=0xff;
  *out_a = (char*) Scan();
  for(j=0; j<100000; j++);
  *out_a=0x00;
  for(j=0; j<100000; j++);

    }