Radio FM Arduino Nano

// This project is in public Domain //
// Project Designer... Antonio Galvan//
//visit Arduino.cc and project Hub//
#include <Wire.h>
#include <LiquidCrystal.h>
#define clk 2
#define dt 3
#define sw 4

LiquidCrystal lcd(5,6,7,8,9,10);

double frequency;
unsigned char frequencyH = 0;
unsigned char frequencyL = 0;
unsigned int frequencyB;
volatile boolean TurnDetected;
volatile boolean up;

void isr0 ()  {
  TurnDetected = true;
  up = (digitalRead(clk) == digitalRead(dt));
}
void setFrequency()  {
  frequencyB = 4 * (frequency * 1000000 + 225000) / 32768;
  frequencyH = frequencyB >> 8;
  frequencyL = frequencyB & 0XFF;
  Wire.beginTransmission(0x60);
  Wire.write(frequencyH);