Praktika 6 Buzzer

const int buzzerPin = 9;
const int songLength = 18;
char notes[] = "cdfda ag cdfdg gf "; 
int beats[] = {1,1,1,1,1,1,4,4,2,1,1,1,1,1,1,4,4,2};
int tempo = 150;

void setup() 
{
  pinMode(buzzerPin, OUTPUT);
}
void loop() 
{
  int i, duration;
  for (i = 0; i < songLength; i++)
  {
    duration = beats[i] * tempo; 
    if (notes[i] == ' ')      
    {
      delay(duration);          
    }
    else                         
    {
      tone(buzzerPin, frequency(notes[i]), duration);
      delay(duration);          
    }
    delay(tempo/10);              
  }
  while(true){}
}
int frequency(char note) 
{
  int i;
  const int numNotes = 8;
  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
  int frequencies[] = {262, 294, 330, 349, 392, 440, 494, 523};

  for (i = 0; i < numNotes; i++)  
  {
    if (names[i] == note)       
    {
      return(frequencies[i]);    
    }
  }
  return(0); 
}

const int buzzerPin = 9;
const int potPin = A0;
int songLength = 18;

void setup() 
{
  pinMode(buzzerPin, OUTPUT);
  Serial.begin(9600);
}

void loop() 
{
  int potValue = analogRead(potPin);
  potValue = map(potValue, 0, 1023, 0, 6);
  Serial.println(potValue);

  if(potValue == 1)
  {
    song1();
  }
  else if(potValue == 2)
  {
    song2();
  }
  else if(potValue == 3)
  {
    song3();
  }
  else if(potValue == 4)
  {
    song4();
  }
  else if(potValue == 5)
  {
    song5();
  }
  else if(potValue == 6)
  {
    song6();
  }
}

int frequency(char note) 

{
  int i;
  const int numNotes = 14; 
  char names[] = { 'x', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm' };
  const int frequencies[] = {0, 50, 100, 150, 300, 350, 400, 450, 500, 700, 750, 800, 850, 900};
  for (i = 0; i < numNotes; i++) 
  {
    if (names[i] == note)
    {
      return(frequencies[i]); 
    }
  }
  return(0);
}

void playSong(const char* notes, const int* beats, int songLength, int tempo)
{
  int i, duration;

  for (i = 0; i < songLength; i++) 
  {
    duration = beats[i] * tempo;
    if (notes[i] == ' ')
    {
      delay(duration);
    }
    else
    {
      tone(buzzerPin, frequency(notes[i]), duration);
      delay(duration);
    delay(tempo/10);
    }
  }
}

void song1()
{
  int tempo = 100; // Adjust tempo as desired
  songLength = 30; // Adjust song length accordingly
  const char notes[] = "ccggaagffeeddc";
  const int beats[] = {4,4,4,4,4,4,2,4,4,4,4,4,4,2,4,4,4,4,4,4,2,4,4,4,4,4,4,4,4,4}; // Adjust note durations as desired
  playSong(notes, beats, songLength, tempo);
}

void song2()
{
  int tempo = 80;
  songLength = 46;
  const char notes[] = "kxjxijklmjxxkxjxijklmjxxkxjxijklmjxxkxjxijklmj";
  const int beats [] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2};
  playSong(notes, beats, songLength, tempo);
}
  
void song3()
{
  int tempo = 72;
  songLength = 32;
  const char notes[] = "mmmljkjimmmljkjimmmljkjimmmljkji";
  const int beats [] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2};
  playSong(notes, beats, songLength, tempo);
}

void song4()
{
  int tempo = 75;
  songLength = 19;
  const char notes[] = "kkklmlkkklmlkkkllmm";
  const int beats [] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2};
  playSong(notes, beats, songLength, tempo);
}
  
void song5()
{ 
  int tempo = 50;
  songLength = 74;
  const char notes[] = "aaaabbbbccccddddeeeeffffgggghhhhiiiijjjjxxjjjjiiiihhhhggggffffeeeeddddccccaaaa";
  const int beats [] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2};
  playSong(notes, beats, songLength, tempo);
}
  
void song6()
{
  int tempo = 75;
  songLength = 11;
  const char notes[] = "kjkkjkkjklm";
  const int beats [] = {2,2,2,2,2,2,2,2,2,2,2};
  playSong(notes, beats, songLength, tempo);
}