Musichino

#define BUZZER 10

#define W_BUTTON 11
#define Y_BUTTON 6
#define R_BUTTON 7
#define G_BUTTON 8
#define B_BUTTON 9

#define PIN_BLU 5
#define PIN_GREEN 4
#define PIN_RED 3
#define PIN_YELLOW 2

#define WHITE 64
#define BLU 32
#define GREEN 16
#define RED 8
#define YELLOW 4

#define NULLA 0
long Number;
int   YbuttonState=0;
int   RbuttonState=0;
int   GbuttonState=0;
int   BbuttonState=0;
int   WbuttonState=0;


int frequency[25];
int mapping[13]={ BLU          ,
                  BLU|YELLOW ,
                  GREEN          ,
                  GREEN|YELLOW ,
                  RED          ,
                  RED|YELLOW ,
                  YELLOW          ,
                  BLU|GREEN ,
                  BLU|GREEN|YELLOW ,
                  BLU|RED ,
                  BLU|RED|YELLOW,
                  GREEN|RED,
                  GREEN|RED|YELLOW};

void AccendiLed(int colore)
{
   digitalWrite(PIN_BLU, (colore&BLU)?HIGH:LOW);
   digitalWrite(PIN_GREEN, (colore&GREEN)?HIGH:LOW);
   digitalWrite(PIN_RED, (colore&RED)?HIGH:LOW);
   digitalWrite(PIN_YELLOW, (colore&YELLOW)?HIGH:LOW);
}


void setup() {
   // put your setup code here, to run once:
   float f;
   Serial.begin(9600);
   pinMode(PIN_BLU, OUTPUT);
   pinMode(PIN_GREEN, OUTPUT);
   pinMode(PIN_RED, OUTPUT);
   pinMode(PIN_YELLOW, OUTPUT);
   pinMode(Y_BUTTON,  INPUT);
   pinMode(R_BUTTON,  INPUT);
   pinMode(G_BUTTON,  INPUT);
   pinMode(B_BUTTON,  INPUT);
   pinMode(W_BUTTON,  INPUT);
   pinMode(BUZZER, OUTPUT);
   randomSeed(analogRead(0));
   frequency[0]=523;
   f=523;
   for(int i=1;i<25;i++){
   f=f*1.0594630943592952646;
   frequency[i]=(int)(f+.5);
   }
}

void loop() {
   int i;
   int note;

   YbuttonState = digitalRead(Y_BUTTON);
   RbuttonState = digitalRead(R_BUTTON);
   GbuttonState = digitalRead(G_BUTTON);
   BbuttonState = digitalRead(B_BUTTON);
   WbuttonState = digitalRead(W_BUTTON);
   Number=0;
   Number= BLU*BbuttonState+GREEN*GbuttonState+RED*RbuttonState+YELLOW*YbuttonState;
   note=0;

   for (i=0;i<13;i++){

      if(mapping[i]==Number){
         note = frequency[i];
         break;
      }
   }

   AccendiLed(Number);

  if (WbuttonState)note*=2;
   if(note==0) noTone(BUZZER);
   else tone(BUZZER, note);
}