Heltec Wifi LoRa esp32 V2 don´t upload.

Other Hardware 3rd Party Boards
1

Hello everyone, I´m new and I never have publish a topic in this forum so excuse me if this isn´t the right place to put my problem.

I´m using the IDE for programming my heltec wifi LoRa esp32 had been working correctly but this morning I can´t upload any Sketch.

I tried to upload Blink but don't works. I have this error.

  esptool.py v2.6
Serial port COM5
Traceback (most recent call last):
  File "esptool.py", line 2959, in <module>
  File "esptool.py", line 2952, in _main
  File "esptool.py", line 2652, in main
  File "esptool.py", line 222, in __init__
  File "site-packages\serial\__init__.py", line 88, in serial_for_url
  File "site-packages\serial\serialwin32.py", line 62, in open
serial.serialutil.SerialException: could not open port 'COM5': WindowsError(121, 'Se agot\xf3 el tiempo de espera del sem\xe1foro.')
Failed to execute script esptool
el puerto seleccionado Failed to execute script esptool
 no existe o tu placa no esta conectada

My blink

void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

The Heltec wifi lora esp32 continus working with the last upload sketch.

I´m using the same cable to connect the PC and Heltec esp32. Also I don't have connect some else in the board.

I would appreciate you help and excuse my english.

2

The IDE is not seeing the ESP32 board on COM5.

In the IDE under menu option \Tools\Port:\Serial Ports is COM5 listed ?

3

(deleted)

4

I often use TeraTerm to monitor ang log serial output form boards.

I often forget to close it down, before uploading a new program, so have seen the "esptool.py" error on a great many ocaisions...................