void setup() {
  // put your setup code here, to run once:
  volatile long i,j;


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

  dirf = 0x30;   dirk = 0x107;
  outf = 0x31;   ink = 0x106;

  *dirf = 0x01; 
  *dirk = 0x00; 

  i = 0;
   
   while(1)
   {
    x = *ink; 
    if((x & 0x01) == 0x01){
        i++;
        for(j=0;j<50000;j++);
    }
    if(i %2)   // 0 or 1 //odd means 1 remainder
      *outf = 0x01;   //ON First LED
    else        // even means remainder 0
        *outf = 0x02;  //ON second LED 
  
}
}

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

}