#include "keyPad.h";
//#include "LCD.h";
volatile char *dirf,*outf,x;
volatile char *dira,*outa,*dirc,*inc;
volatile char i,number;
volatile  char keypadScan[4][4]={{1,2,3,11},{4,5,6,12},{7,8,9,13},{15,16,17,14}};
volatile char row[9]={0,0,1,0,2,0,0,0,3};
volatile char col[9]={0,0,1,0,2,0,0,0,3};
volatile long j;
void setup() {
  // put your setup code here, to run once:
  dirf=0x30;
  *dirf=0x0f;
  outf=0x31;
init_keypad();

while(1)
{

scan();



}



}

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

}

void init_keypad()
{
dira=0x21;dirc=0x27; 
*dira=0x0f;*dirc=0x00;
outa=0x22; inc=0x26; 
*outa=0x00;
}
void scan()
{
  for(i=0;i<4;i++)
  {
    *outa=1<<i;
    if(*inc!=0){
    //*outf=row[1<<i];
    //*outf=col[*inc];
      *outf=keypadScan[row[1<<i]][col[*inc]];
    }
  }
  return number;
}