/**
   Mini piano for Arduino.

   You can control the colorful buttons with your keyboard:
   After starting the simulation, click anywhere in the diagram to focus it.
   Then press any key between 1 and 8 to play the piano (1 is the lowest note,
   8 is the highest).

   Copyright (C) 2021, Uri Shaked. Released under the MIT License.

   OK changes
*/

// #include "ESP32Tone.h" // OK: this does not work when copied (for me it did)
// Use below instead and update imports to have ToneESP32 instead
#include "ToneESP32.h"
#include "pitches.h"

#define SPEAKER_PIN 2

// const uint8_t buttonPins[] = { 12, 11, 10, 9, 7, 6, 5, 4 };
const uint8_t buttonPins[] = { 12, 16, 11, 15, 10, 9, 14, 7, 13, 6, 3, 5, 4 };
const int buttonTones[] = {
  NOTE_C4, NOTE_CS4, NOTE_D4, NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4,
  NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4, NOTE_B4, NOTE_C5
};
const int numTones = sizeof(buttonPins) / sizeof(buttonPins[0]);

void setup() {
  // OK: We have to wait until serial is ready...
  while (!Serial) delay(10);
  Serial.begin(115200);
  Serial.println("My piano");
  for (uint8_t i = 0; i < numTones; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
}

void loop() {
  int pitch = 0;
  for (uint8_t i = 0; i < numTones; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      pitch = buttonTones[i];
      Serial.print("Pitch: ");
      Serial.println(pitch);
      break;
    }
  }
  if (pitch) {
    tone(SPEAKER_PIN, pitch);
  } else {
    noTone(SPEAKER_PIN);
  }
  delay(20);
}