//#include "musicBox.h" //this is for our tones and is for reference.
int knob = A4; //analog pin for the potentiometer
int ledPin1 = 5;
int ledPin2 = 6;
int ledPin3 = 7;
int speakerPin = 8;
int length = 15; // the number of notes
char notes[] = "ccggaagffeeddc "; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };
int tempo = 300;
int btn = 12; //pin for the button

void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2) {
    digitalWrite(speakerPin, HIGH);
    delayMicroseconds(tone);
    digitalWrite(speakerPin, LOW);
    delayMicroseconds(tone);
  }
}

void playNote(char note, int duration) {
  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
  int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };

  // play the tone corresponding to the note name
  for (int i = 0; i < 8; i++) {
    if (names[i] == note) {
      playTone(tones[i], duration);
    }
  }
}


void setup() {
pinMode(speakerPin, OUTPUT);
Serial.begin(57600); //start printing out to the serial port for processing to read from
pinMode(knob, INPUT);//add a input for your potentiometer
pinMode(btn, INPUT_PULLUP);//add an input for the button. We're using input pull up because otherwise, there'd be a short
//you can also do this in hardware. I often do. See pull up resistor

pinMode(ledPin1, OUTPUT);
pinMode (ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);


}

void loop() {
	int data = analogRead(knob); //take an analog read on the knob to read resistance(0 to 1024)
	int btnState = digitalRead(btn); //digitally read the button (0 or 1)
	//Serial.println(btnState)
; //optional print line for testing
	data = map(data, 0, 1024, 65, 800);//using the map function, transform the range of the
//tone that the resistor is in, 0 to 1024 to the range of tones we want to play.

//turn on
digitalWrite(ledPin1, HIGH);
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin3, HIGH);

//wait 1 sec
delay(1000);
//turn off
digitalWrite(ledPin1, LOW);
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, LOW);

//wait 1 sec
delay(1000);

	if(btnState==0) // the button is pushed down
	{
		int pauseBetweenNotes = 2 * 1.30;//make a little pause to not overwhelm arduino
		tone(8, data,500); // play a tone on pin 8, at the mapped sound frequency for 500ms
		delay(pauseBetweenNotes); // a little pause
		Serial.println(data); // print it out
		noTone(8);//turn off the pad
	}else{ //the button is not pushed
		noTone(8); //make no noise
	}
for (int i = 0; i < length; i++) {
    if (notes[i] == ' ') {
      delay(beats[i] * tempo); // rest
    } else {
      playNote(notes[i], beats[i] * tempo);
    }

    // pause between notes
    delay(tempo / 2);
  }



}