arduino蜂鸣器简单歌曲代码

好的，以下是一个简单的arduino蜂鸣器播放"小星星"的代码：

int melody[] = {
  NOTE_C4, NOTE_C4, NOTE_G4, NOTE_G4, NOTE_A4, NOTE_A4, NOTE_G4,
  NOTE_F4, NOTE_F4, NOTE_E4, NOTE_E4, NOTE_D4, NOTE_D4, NOTE_C4
};

int noteDurations[] = {
  4, 4, 4, 4, 4, 4, 2,
  4, 4, 4, 4, 4, 4, 2
};

void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2) {
    digitalWrite(8, HIGH);
    delayMicroseconds(tone);
    digitalWrite(8, LOW);
    delayMicroseconds(tone);
  }
}

void playNote(int note, int duration) {
  int tone = 0;
  switch(note) {
    case 'C':
      tone = 1915;
      break;
    case 'D':
      tone = 1700;
      break;
    case 'E':
      tone = 1519;
      break;
    case 'F':
      tone = 1432;
      break;
    case 'G':
      tone = 1275;
      break;
    case 'A':
      tone = 1136;
      break;
    case 'B':
      tone = 1014;
      break;
    case 'P':
      delay(duration);
      return;
    default:
      break;
  }
  playTone(tone, duration);
}

void setup() {
  pinMode(8, OUTPUT);
}

void loop() {
  for (int i = 0; i < 14; i++) {
    playNote(melody[i], noteDurations[i]);
    delay(noteDurations[i] / 2);
  }
  delay(1000);
}

以上代码会让蜂鸣器播放"小星星"，如果需要播放其他歌曲或想要更详细的说明，可以与我进行交互。