A fatal error occurred: Invalid head of packet (0x00): Possible serial noise or corruption.

[avinashboy]

Sketch uses 307051 bytes (23%) of program storage space. Maximum is 1310720 bytes.
Global variables use 20936 bytes (6%) of dynamic memory, leaving 306744 bytes for local variables. Maximum is 327680 bytes.
esptool v5.0.0
Serial port COM6:
Connecting....
A fatal error occurred: Invalid head of packet (0x00): Possible serial noise or corruption.

Failed uploading: uploading error: exit status 2

[avinashboy]

This is my code:

#define BUZZER_PIN 12  // GPIO pin connected to buzzer

// Function declarations
void happyBirthday();


void setup() {
  Serial.begin(115200);
  
  // Configure PWM for the buzzer (ESP32 Arduino Core 3.x syntax)
  ledcAttach(BUZZER_PIN, 1000, 8); // Pin, frequency, resolution
  
  Serial.println("ESP32 Passive Buzzer Ready!");
}

void loop() {
  happyBirthday();
  delay(5000);
  
}

// Musical note frequencies
int NOTE_C4 = 262;
int NOTE_D4 = 294;
int NOTE_E4 = 330;
int NOTE_F4 = 349;
int NOTE_G4 = 392;
int NOTE_A4 = 440;
int NOTE_B4 = 494;
int NOTE_C5 = 523;
int NOTE_D5 = 587;
int NOTE_E5 = 659;
int NOTE_F5 = 698;
int NOTE_G5 = 784;

// Play "Happy Birthday" - Full Version
void happyBirthday() {
  int noteDuration = 400;
  int pause = 80;
  
  // "Happy birthday to you" (first line)
  playTone(NOTE_C4, noteDuration); delay(pause);
  playTone(NOTE_C4, noteDuration/2); delay(pause);
  playTone(NOTE_D4, noteDuration); delay(pause);
  playTone(NOTE_C4, noteDuration); delay(pause);
  playTone(NOTE_F4, noteDuration); delay(pause);
  playTone(NOTE_E4, noteDuration*2); delay(pause*3);
  
  // "Happy birthday to you" (second line)
  playTone(NOTE_C4, noteDuration); delay(pause);
  playTone(NOTE_C4, noteDuration/2); delay(pause);
  playTone(NOTE_D4, noteDuration); delay(pause);
  playTone(NOTE_C4, noteDuration); delay(pause);
  playTone(NOTE_G4, noteDuration); delay(pause);
  playTone(NOTE_F4, noteDuration*2); delay(pause*3);
  
  // "Happy birthday dear [name]"
  playTone(NOTE_C4, noteDuration); delay(pause);
  playTone(NOTE_C4, noteDuration/2); delay(pause);
  playTone(NOTE_C5, noteDuration); delay(pause);
  playTone(NOTE_A4, noteDuration); delay(pause);
  playTone(NOTE_F4, noteDuration); delay(pause);
  playTone(NOTE_E4, noteDuration); delay(pause);
  playTone(NOTE_D4, noteDuration*2); delay(pause*3);
  
  // "Happy birthday to you" (final line)
  playTone(NOTE_B4, noteDuration); delay(pause);
  playTone(NOTE_B4, noteDuration/2); delay(pause);
  playTone(NOTE_A4, noteDuration); delay(pause);
  playTone(NOTE_F4, noteDuration); delay(pause);
  playTone(NOTE_G4, noteDuration); delay(pause);
  playTone(NOTE_F4, noteDuration*3); delay(pause*4);
}

[avinashboy]

I’ve tried all the methods on my current laptop, but it’s not working. On another laptop, everything works fine. I’m not sure what’s wrong here. Could you help me figure out the problem or how to find a solution? Thanks in advance for your help!

Esp32 version is 3.3.0 & Arduino IDE version is 2.3.6

[avinashboy]

I was having issues with ESP32 version 3.3.0 not working as expected. After downgrading to version 3.2.1, everything started working fine again