No COM port discovered

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pascalj
 
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No COM port discovered

Post by pascalj »

Hello,
I am trying to flash my ESP32 feather. Adafruit ESP32-S3 Feather with 4MB Flash 2MB PSRAM - STEMMA QT. I just received the product a few days ago (new).
I tried with both Windows 10 and Mac OSX, with different USB C cables, but I do not get a COM port discovered. the feather is in flash mode (boot > reset button then release).
I think the board is faulty. Can I get a replacement?
thanks!
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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

Outside of the Arduino IDE at the Device Manager level do you see anything showing up as a USB device when you plug it in?

Is there any LED activity on the Feather ESP32-S2?

Have you used any of these USB cables before with other controllers (eg. are they known good data cables)?

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pascalj
 
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Re: No COM port discovered

Post by pascalj »

No I don't see any usb/com port showing up outside the IDE either.
I have used these USB cables before, just not with other esp32 boards.
yes there is LED activity on the board when I plug in. then the lights turn off when I put it in flashing mode.

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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

Thanks for the additional details.

It sounds like you did not install the necessary serial driver so the ESP32-S3 is not be detected by either OS Win/MacOS.
Install CH9102 / CH34X USB Driver
Newer ESP32 boards have a different USB-to-serial converter that talks to the chip itself, and will need a driver on your computer's operating system. The driver is available for Mac and Windows. It is already built into Linux.

If you would like more detail, check out the guide on installing these drivers.

https://learn.adafruit.com/adafruit-esp ... -ide-setup

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pascalj
 
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Re: No COM port discovered

Post by pascalj »

I installed the 2 drivers but it didn't fix the problem. I now see 2 ports but they are not related to the feather. see picture:
Screenshot 2023-01-16 at 7.55.46 PM.png
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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

You might need to use the Arduino IDE 1.8.19 release. I'm not 100% 2.x is working.

https://learn.adafruit.com/adafruit-esp ... -ide-setup

Have you installed the ESP32 Baord Support Package? It is explained in the link above and below.

https://docs.espressif.com/projects/ard ... stallation

On the windows side are you seeing the board after installing the CP2104 driver under USB Device Manager?

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pascalj
 
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Re: No COM port discovered

Post by pascalj »

should I use Arduino 1.8 on Mac OS as well?
also, does the esp32 board support package work if the COM port is not mapped?
I am not seeing the board on windows either, even after installing the drivers.

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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

If the USB is not being detected in the Windows Device Manager or Apple's equivalent System Information USB that is more likely a reflection of the USB-C cable. If you have not already tried using a USB-A <--> USB-C that will likely resolve it assuming they are data cables.

Looking for the COM port through the Arduino IDE is of limited value. When the correct packages are installed and the cable is good the correct COM port will be selected.

Using a known working copy of Arduino 1.8.19 and the ESP32 package will put in a better situation to diagnose what is going on.

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pascalj
 
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Re: No COM port discovered

Post by pascalj »

thanks. would this cable work? https://www.amazon.com/gp/product/B0794M53HQ/

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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

That cable you linked to looks good. You probably don't need a 3' cable. I tend to use short 1' ones like this:

; USB Type A to Type C Cable - 1ft - 0.3 meter
https://www.adafruit.com/product/4473

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pascalj
 
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Re: No COM port discovered

Post by pascalj »

thanks. I just tested it with the new cable and it worked!

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mikeysklar
 
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Re: No COM port discovered

Post by mikeysklar »

Excellent…Thank you for the followup.

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