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#include <TEA5767.h> //library FM Module
#include <Wire.h> //library i2C Connection

TEA5767 Radio;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
Radio.init();
Radio.set_frequency(93.6); 
Serial.print("Radio Frequency set at 93.6Mhz")
}

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

}

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#include <TEA5767.h>
#include <Wire.h>
#include <Button.h>
#include <LiquidCrystal_I2C.h>   

LiquidCrystal_I2C lcd(0x27, 20, 4);
#define PULLUP true
#define INVERT true 
#define DEBOUNCE_MS 20
#define Next_Button 11
#define Prev_Button 12

TEA5767 Radio;
double old_frequency;
double frequency;
int search_mode = 0;
int search_direction;
unsigned long last_pressed;
int ch = 0;

Button btn_forward(Next_Button, PULLUP, INVERT, DEBOUNCE_MS);
Button btn_backward(Prev_Button, PULLUP, INVERT, DEBOUNCE_MS);

void setup() {  
  Wire.begin();
  Radio.init();
  Radio.set_frequency(93.6); 
 pinMode (13, OUTPUT);
 digitalWrite (13, HIGH); //get VCC from pin 13 to button led
  lcd.begin();
  lcd.clear();
}


void loop() {
btn_forward.read();
btn_backward.read();

  unsigned char buf[5];
  int stereo;
  int signal_level;
  double current_freq;
  unsigned long current_millis = millis();
  
    if (Radio.read_status(buf) == 1) {
    current_freq =  floor (Radio.frequency_available (buf) / 100000 + .5) / 10;
    stereo = Radio.stereo(buf);
    signal_level = Radio.signal_level(buf);
    //deskripsikan frekuensi dan nama Channel radio di daerahmu
    lcd.setCursor(0,1); 
    if (current_freq == 87.60){
    lcd.print("Hard Rock ");ch=1;}
    if (current_freq == 88.00){
    lcd.print("Mustang   ");ch=1;}
    if (current_freq == 88.30){
    lcd.print("M2 Radio  ");ch=1;}
    if (current_freq == 88.80){
    lcd.print("RRI JKT 3 ");ch=1;}
    if (current_freq == 89.60){
    lcd.print("i-Radio   ");ch=1;}
    if (current_freq == 90.00){
    lcd.print("Elshinta  ");ch=1;}
    if (current_freq == 92.40){
    lcd.print("Pass FM   ");}
    if (current_freq == 93.60){
    lcd.print("Gaya FM   ");ch=1;}
    if (current_freq == 98.70){
    lcd.print("GEN FM    ");}
    if (current_freq == 101.0){
    lcd.print("Jack FM   ");ch=1;}
    if (current_freq == 102.2){
    lcd.print("Prambors  ");ch=1;}
    if (current_freq == 100.3){
    lcd.print("El Gangga ");ch=1;}
    if (current_freq == 104.6){
    lcd.print("Trijaya   ");ch=1;}
    if (ch==0){lcd.print("Unregistered");}

    lcd.setCursor(0,0);
    lcd.print("FM:"); lcd.print(current_freq);
    lcd.setCursor(0,2);
    if (stereo) lcd.print("STEREO "); else lcd.print("MONO   ");
    lcd.setCursor(0,3);
    lcd.print("Signal: ");lcd.print(signal_level);
  }
  
  if (search_mode == 1) {
      if (Radio.process_search (buf, search_direction) == 1) {
          search_mode = 0;
      }
  }
  
  if (btn_forward.isPressed()) {
    last_pressed = current_millis;
    search_mode = 1;
    search_direction = TEA5767_SEARCH_DIR_UP;
    Radio.search_up(buf);
    delay(300);
  }
  
  if (btn_backward.isPressed()) {
    last_pressed = current_millis;
    search_mode = 1;
    search_direction = TEA5767_SEARCH_DIR_DOWN;
    Radio.search_down(buf);
    delay(300);
  } 
  //delay(20); 
  delay(50);
}