Arduino button led buzzer

gistfile1.ino

/****************************************************************************
* Copyright © 2015 Alessandro Spallina
* email: alessandrospallina1@gmail.com
* website: aleksnote.altervista.org
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
***************************************************************************

* Questo listato permette di far suonare ad un piezoelettrico attivo per arduino
* una piccola melodia 8bit alla pressione del bottone relativo (e accensione del led
* corrispondente); puoi, aprendo un monitor comunicante con la porta seriale 9600 
* di Arduino, verificare l'azione in esecuzione su Arduino e inviare ad esso delle 
* note che suonerà come se fosse un bel pianoforte da quattro soldi, lol.

NOTES (8bit):
do -> c
re -> d
mi -> e
fa -> f
sol -> g
la -> a
si -> b
DO -> C


*/


// *** CONSTANTS ***
const int buzzer=6;
const int ledOnBoard=13;
const int blueLed=9;
const int yellowLed=10;
const int blueButton=2;
const int yellowButton=3;
//*******************


// *** GLOBALS ***
int yellowState=0;
int blueState=0;
char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
int tones[] = { 1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };

//*******************

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

void playNote(char note, int duration)
{
int i;

  for(i=0; i<8; i++)
  {
    if(names[i]==note)
      playTone(tones[i], duration);
  }
}

//Chinese Childrens Fake Toy
void yellowPlay()
{
int i;
int length = 15;
char notes[] = "ccggaagffeeddc ";
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 4 };
int tempo = 300;


  Serial.println("***yellowMusic***");
  for(i=0;i<length;i++)
  {
    if(notes[i]==' ')
      delay(beats[i]*tempo);
      
    else
      playNote(notes[i], beats[i]*tempo);
  
  delay(tempo / 2);

  }
  Serial.println("***end***");

}



void bluePlay()
{
int i;
int length = 27;
char notes[] = "edcdeeedddeeeedcdeeeeddedc";
int beats[] = { 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1};
int tempo = 200;  
  
  

  
  
  Serial.println("***blueMusic***");
  for(i=0;i<length;i++)
  {
    if(notes[i]==' ')
      delay(beats[i]*tempo);
      
    else
      playNote(notes[i], beats[i]*tempo);
  
  delay(tempo / 2);


  }
  Serial.println("***end***");
  
}

//*******************





// *** CANONICALS ***
void setup() {
  pinMode(ledOnBoard, OUTPUT);
  pinMode(blueLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(blueButton, INPUT);
  pinMode(yellowButton, INPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);
}

void loop() {
char incomingByte;
yellowState=digitalRead(yellowButton);
blueState=digitalRead(blueButton);


  if(Serial.available()>0)
  {
    incomingByte=Serial.read();
    playNote(incomingByte, 300); 
    digitalWrite(ledOnBoard, HIGH);
    
  }


  if(yellowState==HIGH)
  {
    digitalWrite(ledOnBoard, HIGH); 
    digitalWrite(yellowLed, HIGH);
    Serial.println("YELLOW BUTTON PRESSED");
    yellowPlay();
  }
  
  if(blueState==HIGH)
  {
    digitalWrite(ledOnBoard, HIGH);
    digitalWrite(blueLed, HIGH);
    Serial.println("BLUE BUTTON PRESSED");
    bluePlay();

  }  
  
  digitalWrite(ledOnBoard, LOW);
  digitalWrite(yellowLed, LOW);
  digitalWrite(blueLed, LOW);
}
//*****************************