Digital Electronics Lab 3

USB MIDI Lab:

My Code:

int redLED = 10;
int yellowLED = 24;
int blueLED = 26;
int greenLED = 28;

int buttonPin1 = 36;
int buttonPin2 = 35;
int buttonPin3 = 33;
int buttonPin4 = 32;
int toggle = 29;
int potValue = 0;

void setup() {
  pinMode(redLED, OUTPUT);
  pinMode(yellowLED, OUTPUT);
  pinMode(blueLED, OUTPUT);
  pinMode(greenLED, OUTPUT);

  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);
  pinMode(buttonPin4, INPUT);
  pinMode(toggle, INPUT);
}



void loop() {
  toggleMode();
}


void keyboardMode() {
  checkButton(buttonPin1, redLED, 60);
  checkButton(buttonPin2, yellowLED, 64);
  checkButton(buttonPin3, blueLED, 67);
  checkButton(buttonPin4, greenLED, 71);
}

void arpeggiatorMode() {
  if (digitalRead(buttonPin1) == HIGH) {
    arpeggio(60);
  }
  if (digitalRead(buttonPin2) == HIGH) {
    arpeggio(64);
  }
  if (digitalRead(buttonPin3) == HIGH) {
    arpeggio(67);
  }
  if (digitalRead(buttonPin4) == HIGH) {
    arpeggio(71);
  }
}

void toggleMode() {
  if (digitalRead(toggle) == LOW) {
    arpeggiatorMode();
  }
  if (digitalRead(toggle) == HIGH) {
    keyboardMode();
  }
}

void arpeggio(int note) {
  potValue = analogRead(A19); //variable for the analog input pin of potentiometer
  usbMIDI.sendNoteOn(note, 127, 1);
  digitalWrite(redLED, HIGH);
  delay(potValue);
  usbMIDI.sendNoteOff(note, 0, 1);
  digitalWrite(redLED, LOW);
  usbMIDI.sendNoteOn(note + 4, 127, 1);
  digitalWrite(yellowLED, HIGH);
  delay(potValue);
  usbMIDI.sendNoteOff(note + 4, 0, 1);
  digitalWrite(yellowLED, LOW);
  usbMIDI.sendNoteOn(note + 7, 127, 1);
  digitalWrite(blueLED, HIGH);
  delay(potValue);
  usbMIDI.sendNoteOff(note + 7, 0, 1);
  digitalWrite(blueLED, LOW);
  usbMIDI.sendNoteOn(note + 11, 127, 1);
  digitalWrite(greenLED, HIGH);
  delay(potValue);
  usbMIDI.sendNoteOff(note + 11, 0, 1);
  digitalWrite(greenLED, LOW);
}

void checkButton(int buttonPin, int ledPin, int note) {
  if (digitalRead(buttonPin) == HIGH) {
    digitalWrite(ledPin, HIGH);
    usbMIDI.sendNoteOn(note, 127, 1);
    delay(500);
    digitalWrite(ledPin, LOW);
    usbMIDI.sendNoteOff(note, 0, 1);
  }


}