Zephyr UART framing errors

[trampas]

I am having a problem where the UART is getting noise and bad data (I assume framing errors too) with Zephyr drivers.  I was wondering how in Zephyr do you check for framing errors and clear out/reset the UART hardware? 

Note I am getting some Bus Errors and other random crashes as a result of these framing errors which I suspect is a buffer overflow, however I have not gone through all the drivers and Zephyr source code to find the root cause yet.

Thanks

Trampas

[Krzysztof Chruscinski]

Some time ago I made a PR which adds test for UART errors and it contains few fixes in uart driver: https://github.com/zephyrproject-rtos/zephyr/pull/71886 Unfortunately, it did not yet get in.

In general it depends which API you are using but driver is able to recover from error and continue to receive. In case of asynchronous API RX will be disabled and you need to re-enable it.