Proyecto

/********** Proyecto ***********/
const int notes=6;          // set up number of notes

boolean notePlaying[notes];  //note states array: keeps track of whether a MIDI note is "on" or "off"

int scale[notes]={0,2,4,5,7,9};       //major scale

int beginNote=0x3C;                                  //starting note value (default middle C)

int threshold=512;                                //value which analogRead() must cross for a midi note to be triggered

boolean midiMode=false;                          //set this to "true" before uploading MIDI firmware (http://hunt.net.nz/users/darran/weblog/52882/Arduino_UNO_MIDI_USB_version_02.html) to 16u2


void setup(){
  if(midiMode){
    Serial.begin(115200);           //midi USB baud rate = 115200
  }else{
    Serial.begin(9600);           //for testing values
  }
}

void loop() {
  for(int i=0;i<notes;i++){

    if((analogRead(i)<threshold)&&(notePlaying[i]==false)){        //note on & CC messages
      int note=beginNote+scale[i];
      midiMessage(0x90, 1, note, 100);
      notePlaying[i]=true;
    }

    if((analogRead(i)>threshold)&&(notePlaying[i]==true)){        //note off messages
      int note=beginNote+scale[i];
      midiMessage(0x80, 1, note, 0x00);
      notePlaying[i]=false;
    }
  }

  //Serial.println(analogRead(A5));
  //delay(400);
}

void midiMessage(int commandByte, int channelByte, int data1Byte, int data2Byte) {
  if(midiMode){
    Serial.write(commandByte);
    Serial.write(channelByte);
    Serial.write(data1Byte);
    Serial.write(data2Byte);
  }else{
    if(commandByte==0x90){
      Serial.print("Note On message: note ");
    }else if(commandByte==0x80){
      Serial.print("Note Off message: note ");
    }
    Serial.print(data1Byte);
    Serial.print(", velocity ");
    Serial.println(data2Byte);
  }
}