#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

// Define hardware type, size, and output pins
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 120 // Change this if you have more matrices
#define CS_PIN 10
#define DATA_PIN 11
#define CLK_PIN 13

// Create an instance of the MD_Parola class
MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

const int buzzerPin = 12; // Connect the buzzer to pin 8

// Define the notes for "Happy Birthday"
const int melody[] = {
  262, 262, 294, 262, 349, 330, // Happy Birthday to you
  262, 262, 294, 262, 392, 349, // Happy Birthday to you
  262, 262, 587, 440, 349, 330, 294, // Happy Birthday dear [Name]
  466, 466, 440, 349, 392, 349  // Happy Birthday to you
};

// Define the note durations
const int noteDurations[] = {
  4, 4, 4, 4, 4, 4, // Happy Birthday to you
  4, 4, 4, 4, 4, 4, // Happy Birthday to you
  4, 4, 4, 4, 4, 4, 4, // Happy Birthday dear [Name]
  4, 4, 4, 4, 4, 4  // Happy Birthday to you
};

void setup() {
  // Initialize the display
  myDisplay.begin();
  pinMode(buzzerPin, OUTPUT);
  myDisplay.setIntensity(10); // Set brightness (0-15)
  myDisplay.displayClear();   // Clear the display
  myDisplay.displayText("Happy Birthday", PA_CENTER, 50, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
}

void loop() {
  // Animate the display
  if (myDisplay.displayAnimate()) {
    myDisplay.displayReset();
  }

  // Play the melody
  playMelody();
}

void playMelody() {
  for (int thisNote = 0; thisNote < sizeof(melody) / sizeof(melody[0]); thisNote++) {
    int noteDuration = 1000 / noteDurations[thisNote];
    tone(buzzerPin, melody[thisNote], noteDuration);
    
    // Pause for the note's duration plus a bit of silence
    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    
    // Stop the tone playing
    noTone(buzzerPin);
  }
}