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

volatile char *dirf,*dirk,x;
volatile char *outf ,*ink;

dirf = 0x30;dirk = 0x107;
outf = 0x31,ink = 0x106;
*dirf = 0x01; *dirk = 0x00;

while(1)
{
  x = *ink;
  if ((x & 0x01)==0x01)
    *outf = 0x01;

  else
    *outf = 0x00;
}



}

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

}