ESP32 Forum

Posted: **Thu Dec 31, 2020 9:34 am**

So I have successfully uploaded and monitored the ESP32 (Hello_World), But now when I try Monitor the the Blink Example I see one message then it gives a Error. Any Ideas why the Blink E.g will do this ?

Code: Select all

Turning off the LED, Test 2
Exception in thread Thread-2:
Traceback (most recent call last):
  File "E:\Desktop\Arduino\Eclipse\Python\lib\threading.py", line 954, in _bootstrap_inner
    self.run()
  File "E:\Desktop\Arduino\Eclipse\Python\lib\threading.py", line 892, in run
    self._target(*self._args, **self._kwargs)
  File "E:\Desktop\esp-idf\tools\idf_monitor.py", line 149, in _run_outer
    self.run()
  File "E:\Desktop\esp-idf\tools\idf_monitor.py", line 361, in run
    data = self.serial.read(self.serial.in_waiting or 1)
  File "C:\Users\User-Pc\.espressif\python_env\idf4.1_py3.9_env\lib\site-packages\serial\serialwin32.py", line 259, in in_waiting
    raise SerialException("ClearCommError failed ({!r})".format(ctypes.WinError()))
serial.serialutil.SerialException: ClearCommError failed (PermissionError(13, 'Access is denied.', None, 5))

Posted: **Thu Dec 31, 2020 6:20 pm**

Hi DutchOrange,
this may be due to:

use of the wrong serial port
another program using the serial port
bad USB connection or cable
the USB device resetting

Please verify you are using the correct COM port.
If that doesn't help, then try a different USB port and/or another USB cable.

Jan

Posted: **Thu Dec 31, 2020 7:15 pm**

Thanks, It seems Its working again but if it happens again will try, But thanks.

ESP32 Forum

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