UARTE RX error and crash when quik insert and remove RX pin

RE: UARTE RX error and crash when quik insert and remove RX pin

ovrebekk — Mon, 27 May 2024 08:34:09 GMT

Hi Letian

Good to hear you were able to solve the issue. I will consider the ticket resolved then 🙂

Best regards
Torbjørn

RE: UARTE RX error and crash when quik insert and remove RX pin

Brian_Chen — Sun, 26 May 2024 18:51:24 GMT

Hi,

We have solve the problem, it seems to be the problem of the interrupt and the thread. We have change the interrupt mode and also add a small delay after the RX_ERROR happened.

regards,

Letian.

RE: UARTE RX error and crash when quik insert and remove RX pin

ovrebekk — Wed, 08 May 2024 07:24:33 GMT

Hi Letian

In non blocking mode it should not be necessary to clear the error, no, this should happen automatically by the driver.

What if you try to restart RX when the issue occurs?

I made a small wrapper for the UART async driver some time back, in order to provide a simple UART API without relying on dynamic memory allocation. Feel free to have a look for reference:
https://github.com/too1/ncs-uart-handler

Best regards
Torbjørn

RE: UARTE RX error and crash when quik insert and remove RX pin

Brian_Chen — Tue, 07 May 2024 22:30:48 GMT

Hi,

Thank you for your reply.

If we ignore the error, the uarte_handler will always goes to NRFX_UARTE_EVT_ERROR after we reconnect RX pin, even we flush the RX buffer. Do we need to manually clear the error after we reach the EVT_ERROR?

We are currently try to transfer the nrfx_uarte to zephyr uart async API, we will test it as soon as we get there.

We have organized a separate test file for test the uarte individually, I can send it to you if you want it (I don't know if I can upload it in this post).

Best regards,

Letian.

RE: UARTE RX error and crash when quik insert and remove RX pin

ovrebekk — Tue, 07 May 2024 12:00:39 GMT

Hi Letian

Have you tried any of the higher level UART drivers, like the UART async driver?

A couple of comments to your implementation:

1) I am not sure how well it works to deinit and init the driver in the interrupt directly. Have you tried to schedule this operation using a work item?

2) Technically it shouldn't be necessary to do a full re-init of the driver whenever an error occurs. What happens if you simply ignore the error? Will UART operation stop?

Best regards
Torbjørn