Membuat radio FM dengan Arduino dan Nokia 5110

Membangun sebuah radio FM stereo dengan modul Arduino Uno dan TEA5767 serta dengan tampilan display diambil dari layar HP Nokia 5110 atau HP Nokia 3310. Radio FM digital sekarang banyak dijual di toko dengan sangat murah, namun yang satu ini berbeda yaitu dengan modul Mikrokontroler jenis arduino Uno dan memanfaatkan Display HP Nokia 5110. hasil dari percobaan ini cukup bagus di lokasi saya.
di bawah ini ada bebrapa komponen serta program yang disiapkan untuk pembuatan radio ini antara lain :

1. Modul Arduino UNO

2. TEA 5767

3. LCD Nokia 5110

4 Rangkaian lengkap dengan Firtsing

5

5 Sketch

// TEA5767 und Nokia 5110 LCD Display
#include
#include
#include
#include


// D3 - Serial clock out (CLK oder SCLK)
// D4 - Serial data out (DIN)
// D5 - Data/Command select (DC oder D/C)
// D6 - LCD chip select (CE oder CS)
// D7 - LCD reset (RST)
Adafruit_PCD8544 lcd = Adafruit_PCD8544(3,4,5,6,7);



#define button_frequency_up     13
#define button_frequency_down   12
#define button_mute             11

#define TEA5767_mute_left_right  0x06
#define TEA5767_MUTE_FULL        0x80
#define TEA5767_ADC_LEVEL_MASK   0xF0
#define TEA5767_STEREO_MASK      0x80


int old_frequency=-1;
int frequency=9000; //frekuensi default

byte old_stereo=0;
byte stereo=1;

byte old_mute=1;
byte mute=0;

byte old_signal_level=1;
byte signal_level=0;

unsigned long last_pressed;

void setup(void) {
 
  pinMode(button_frequency_up, INPUT);
  pinMode(button_frequency_down, INPUT);
  pinMode(button_mute, INPUT);
 
  Wire.begin();
 
  TEA5767_set_frequency();

  lcd.begin();
  lcd.setContrast(60);
  lcd.clearDisplay();
  
  set_text(1,2,"FM Radio",BLACK,1); 
  //set_text(14,147,"blog.simtronyx.de",BLACK,1);
 
}


void loop() {

    if(frequency!=old_frequency){
      set_text(old_frequency>=10000?6:14,17,value_to_string(old_frequency),WHITE,2);
      set_text(frequency>=10000?6:14,17,value_to_string(frequency),BLACK,2);
      old_frequency=frequency;
    }
   
    TEA5767_read_data();
     
    if(old_stereo!=stereo){
        set_text(old_stereo?22:28,39,old_stereo?"Stereo":"Mono",WHITE,1);
        set_text(stereo?22:28,39,stereo?"Stereo":"Mono",BLACK,1);
        old_stereo=stereo;
    }
   
    if(old_signal_level!=signal_level){
        set_text(old_signal_level<10 br="" int="" old_signal_level="" tring="">        set_text(signal_level<10 br="" int="" signal_level="" tring="">        old_signal_level=signal_level;
        show_signal_level(signal_level);
    }
   
    if(old_mute!=mute){
        set_text(1,39,old_mute?"M":"S",WHITE,1);
        set_text(1,39,mute?"M":"S",BLACK,1);
        old_mute=mute;
    }
     
    delay(50);
   
 
  if(digitalRead(button_frequency_down)==HIGH){
   
    frequency=frequency-5;
    if(frequency<8750 frequency="10800;<br">    TEA5767_set_frequency();
  }
  if(digitalRead(button_frequency_up)==HIGH){
   
    frequency=frequency+5;
    if(frequency>10800)frequency=8750;
    TEA5767_set_frequency();
  }

  if(digitalRead(button_mute)==HIGH){
   
    TEA5767_mute();
  }
 
  delay(50);
 
}

unsigned char frequencyH = 0;
unsigned char frequencyL = 0;

unsigned int frequencyB;

unsigned char TEA5767_buffer[5]={0x00,0x00,0xB0,0x10,0x00};

void TEA5767_write_data(byte data_size){
  
  delay(50);
 
  Wire.beginTransmission(0x60);
 
  for(byte i=0;i    Wire.write(TEA5767_buffer[i]);
 
  Wire.endTransmission();
 
  delay(50);
}

void TEA5767_mute(){
 
  if(!mute){  
    mute = 1;  
    TEA5767_buffer[0] |= TEA5767_MUTE_FULL;
    TEA5767_write_data(2);
//    TEA5767_buffer[0] &= ~TEA5767_mute;
//    TEA5767_buffer[2] |= TEA5767_mute_left_right;
  }  
  else{
    mute = 0;  
    TEA5767_buffer[0] &= ~TEA5767_MUTE_FULL;
    TEA5767_write_data(2);
//    TEA5767_buffer[0] |= TEA5767_mute;
//    TEA5767_buffer[2] &= ~TEA5767_mute_left_right;
  }
   
//  TEA5767_write_data(3);
}

void TEA5767_set_frequency()
{
  frequencyB = 4 * (frequency * 10000 + 225000) / 32768;
  TEA5767_buffer[0] = frequencyB >> 8;
  if(mute)TEA5767_buffer[0] |= TEA5767_MUTE_FULL;
  TEA5767_buffer[1] = frequencyB & 0XFF;
 
  TEA5767_write_data(5);
}

int TEA5767_read_data() {
 
  unsigned char buf[5];
  memset (buf, 0, 5);
 
  Wire.requestFrom (0x60, 5);

  if (Wire.available ()) {
    for (int i = 0; i < 5; i++) {
      buf[i] = Wire.read ();
    }
       
    stereo = (buf[2] & TEA5767_STEREO_MASK)?1:0;
    signal_level = ((buf[3] & TEA5767_ADC_LEVEL_MASK) >> 4);
   
    return 1;
  }
  else return 0;
}

void show_signal_level(int level){
 
  byte xs=68;
  byte ys=8;
  for(int i=0;i<15 br="" i="">    if(i%2!=0)lcd.drawLine(xs+i,ys,xs+i,ys-i/2,level>=i?BLACK:WHITE);
  }
}

void set_text(int x,int y,String text,int color,int textsize){
 
  lcd.setTextSize(textsize);
  lcd.setTextColor(color);
  lcd.setCursor(x,y);    
  lcd.println(text);     
  lcd.display();        
}


String value_to_string(int value){
 
  String value_string = String(value / 100);
  value_string = value_string + '.' + ((value%100<10 100="" br="" value="">  return value_string;
}