String intToHexString(int value){
  if(value == 0){
    return String("00");
  }else if(value == 1){
    return String("01");
  }else if(value == 2){
    return String("02");
  }else if(value == 3){
    return String("03");
  }else if(value == 4){
    return String("04");
  }else if(value == 5){
    return String("05");
  }else if(value == 6){
    return String("06");
  }else if(value == 7){
    return String("07");
  }else if(value == 8){
    return String("08");
  }else if(value == 9){
    return String("09");
  }else if(value == 10){
    return String("0A");
  }else if(value == 11){
    return String("0B");
  }else if(value == 12){
    return String("0C");
  }else if(value == 13){
    return String("0D");
  }else if(value == 14){
    return String("0E");
  }else if(value == 15){
    return String("0F");
  }else{
    return String(value,HEX);
  }
}