SparkFun Forums

[daveo]

Hi all. I have the Weather Carrier board with piggy back Artemis DEV-16401 along with the Weather Meter Kit.
* These have been connected to a Raspberry Pi and recording data since 2021.
* The RPi is in the garage
* The Carrier is in an outdoor shield housing under the eaves
* The Carrier is connected to the RPi with a long single USB-C cable

I just updated the RPi from "stretch" to "bullseye".
* Previously, the board worked, uninterrupted since 2021
* After update, the system stopped working
* The data-read program/script connects to /dev/ttyUSB0
* USB0 now fails uart probe

When I first plug in the USB cable, I will see ttyUSB0 for under a minute before it disappears.
This is true for plugging it into either of the RPi larger USB ports.
'dmesg' has a sequence of messages about New USB device found
* vendor 1a86
* product 7523
* bcdDevice 2.64
* interface usbserial_generic
* driver ch341
* ch341-uartconverter detected
* failed to send control message -32
* ch341-uart probe of ttyUSB0 failed with error -32
* USB disconnect

I am mainly an application software developer so not terribly familiar with the USB connection world.

Thanks in advance for any suggestions!

[paulvha]

As you updated the OS you will probably also have to update the CH340/341 driver. https://github.com/aperepel/raspberrypi-ch340-driver