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

volatile char *dirf,*dirk,x;
volatile char *outf,*ink;
volatile long m;
dirf=0x30,dirk=107;
outf=0x31,ink=0x106;
*dirf=0x01,*dirk=0x01;
int b ,a;
while(1){
x = *ink;
 // this code will Glow 1st LED to 4th LED 
 if ((x ==0x01  )){

   x=0x00;
   for( int i = 0; i < 4; i++){
   x=(x << 1 | 0x01) ;

  *outf=x;
    for(m=0;m<200000;m++);
}
}
  else if ((x ==0x02) ){
    x=0x10;
   *outf=0xA;
  }
  
     *if ((x == (x&0x0F)) ){

   *outf=x;


   }

    else if ((x ==0x08) ){
   *outf=x;
   }
  else 
  {
    *outf= 0x00;
    */
}
}


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

}