Experiment 6

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 buzPin = 9;
const int songLength = 18;
int sensorPin = 0;
int sensorValue = 0;
 
char music1[] = "aaggeedeggaff";
int beats1[] = {1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2};

char music2[] = "agfggafddceda";
int beats2[] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};

char music3[] = "fdegaddgeeade";
int beats3[] = {1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2};
 
int tempo = 150;
 
void setup()
{
  Serial.begin(9600);
  pinMode(buzPin, OUTPUT);
}
 
void loop()
{
  sensorValue = analogRead(sensorPin);
  sensorValue = map(sensorValue, 0, 1023, 1, 3);
  Serial.println(sensorValue);
 
  if (sensorValue == 1)
  {
    play_Song(music1, beats1);
  }
  else if (sensorValue == 2)
  {
    play_Song(music2, beats2);
  }
  else if (sensorValue == 3)
  {
    play_Song(music3, beats3);
  }
}
 
void play_Song(char notes[], int beats[])
{
  int i, duration;
  for (i = 0; i < songLength; i++) 
  {
    duration = beats[i] * tempo; 
    if (notes[i] == ' ')         
    {
      delay(duration); 
    }
    else
    {
      tone(buzPin, frequency(notes[i]), duration);
      delay(duration);
    }
    delay(tempo / 10);
  }
}
 
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; 
}