Uploading to Nano failure after Nano ESP32?

Hardware Nano Family Classic Nano
1

I've just been trying to get a Arduino Nano ESP32 working. Successful to the point of a simple test sketch uploading and running but I'm not confident issues won't return. So I've put it to one side and gone back to my long running project based on a Nano using ATmega328 (Old Bootloader).

Regretfully I am now unable to upload to the board. This is the typical error

avrdude: ser_open(): can't set com-state for "\\.\COM10"

I can open the serial monitor and see output on COM10.

I have tried another two previously unused Nanos as well with no joy. I have also attempted to upload via a Nano being used as an Arduino ISP which is, typically, what I do. Again no joy.

These same Nanos upload fine on my second Windows PC which hasn't had the various ESP32 packages on it.

Also a standard Uno uploads fine.

I have not knowingly done anything else other than try the Nano ESP32 packages in the last few days.

I am used to Arduinos having 10 years experience with them so hopefully I am not making newbie mistakes.

I suspect what I have been doing with the ESP32 because I haven't done anything else but it seems to me that it shouldn't be related but....

Any ideas anyone? Would any more info help identify what is going on?

Thank you,
Alan

2

Another error with more info has been produced


avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "C:\Users\acboo\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"

         Using Port                    : COM10
         Using Programmer              : arduino
         Overriding Baud Rate          : 57600
avrdude: ser_open(): can't set com-state for "\\.\COM10"

avrdude done.  Thank you.

An error occurred while uploading the sketch
Error while setting serial port parameters: 1,000,000 N 8 1

I've never noticed a message containing information about the serial port parameters before.

3

IDE 1.8.13 will display serial output

IDE 2.1.11 fails to open the port
Port monitor error: command 'open' failed: Invalid serial port. Could not connect to COM10 serial port.

4

It seems a quite common issue nowadays. Search results on the forum with possible solutions: https://forum.arduino.cc/search?q=%23using-arduino%3Aavrdude-stk500-bootloader-issues%20com-state%20%40ptillisch

Note that the provided solutions might not work for every scenario.

5

That's a shed load of issues....

I tried the reload driver (CH340G) but it told me it was already up to date.

I have removed IDE v2

I have removed all ESP32 packages from 1.8.13

I now have a compile and upload through 1.8.13.

Although I'm not a believer in coincidences, especially as I've writing software since 1984, in my heart I don't feel this has been down to having IDE v2 or the ESP32 packages.

Is it fixed... may be, but it isn't broken.

6

I know.

It still not clear to me what the exact cause of issue is. Is it Win11? Is it fake CH340 chips? Is it a driver issue? Is it ... ? Or one of the many possible combinations?

7

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