// Project name: arduino- klavesovy hudobny nastroj
// Creators: Daniel Kupka, Samuel Valencik, Katarina Drabikova

// 8 octaves
int tone_C = 2;
int tone_D = 3;
int tone_E = 4;
int tone_F = 5;
int tone_G = 6;
int tone_A = 7;
int tone_B = 8;
int toneC = 9;



// buzzer piezo
int buzzer = 13;

//set status of button at 0
int status_C = 0;
int status_D = 0;
int status_E = 0;
int status_F = 0;
int status_G = 0;
int status_A = 0;
int status_B = 0;
int statusC = 0;


//notes         'c'  , 'd',  'e',  'f',  'g', 'a',  'b',  'C'
int tones[] = { 200, 240, 280, 320, 360, 400, 440, 480 }; //freqencies
int ThisTone = 0;
//moje


const int button_Start = 10;//pin on button
const int ledStop = 11;
const int ledStart = 12;


int status_Start = 0; //status strtu
int starter = 0; //change start stop cycle
bool stat; //start/stop


void setup() {

  pinMode(tone_C, INPUT);
  pinMode(tone_D, INPUT);
  pinMode(tone_E, INPUT);
  pinMode(tone_F, INPUT);
  pinMode(tone_G, INPUT);
  pinMode(tone_A, INPUT);
  pinMode(tone_B, INPUT);
  pinMode(toneC, INPUT);

  pinMode(buzzer, OUTPUT);

  pinMode(button_Start, INPUT);

  pinMode(ledStop, OUTPUT);
  pinMode(ledStart, OUTPUT);

  stat = false;

}

void loop() {
  status_Start = digitalRead(button_Start);

  if (status_Start == HIGH)
  {
    while (status_Start == HIGH) {

    }
    starter++;
  }

  stat = starter % 2;

  if (stat == true) {
    digitalWrite(ledStop, LOW);
    digitalWrite(ledStart, HIGH);
    //tvoj kod
    {
      status_C = digitalRead(tone_C);
      status_D = digitalRead(tone_D);
      status_E = digitalRead(tone_E);
      status_F = digitalRead(tone_F);
      status_G = digitalRead(tone_G);
      status_A = digitalRead(tone_A);
      status_B = digitalRead(tone_B);
      statusC = digitalRead(toneC);


      //in case button is pressed play specific tone


      if ((status_C == HIGH) || (status_E == HIGH) ||
          (status_G == HIGH) || (status_D == HIGH) ||
          (status_F == HIGH) || (status_A == HIGH) ||
          (status_B == HIGH) || (statusC == HIGH) )
      {
        if (status_C == HIGH)
        {
          ThisTone = tones[0];

        }
        if (status_E == HIGH)
        {
          ThisTone = tones[1];
        }
        if (status_G == HIGH)
        {
          ThisTone = tones[2];
        }
        if (status_D == HIGH)
        {
          ThisTone = tones[3];
        }
        if (status_F == HIGH)
        {
          ThisTone = tones[4];
        }
        if (status_A == HIGH)
        {
          ThisTone = tones[5];
        }
        if (status_B == HIGH)
        {
          ThisTone = tones[6];
        }
        if (statusC == HIGH)
        {
          ThisTone = tones[7];
        }

        digitalWrite(buzzer, HIGH);
        delayMicroseconds(ThisTone);
        digitalWrite(buzzer, LOW);
        delayMicroseconds(ThisTone);
      }
      //in case no button is pressed turn the buzzer off
      else
      {
        digitalWrite(buzzer, LOW);
      }

    }
    //konec dana
  } else {
    digitalWrite(ledStop, HIGH);
    digitalWrite(ledStart, LOW);

  }



}