Blocking UART with timeout using soft timers.

RE: Blocking UART with timeout using soft timers.

Jared — Thu, 28 Oct 2021 08:07:10 GMT

Hi,

You can try reading out the remaining data that is still in the RX buffer on a overrun error. See this thread.

regards

Jared

RE: Blocking UART with timeout using soft timers.

Shivek — Wed, 27 Oct 2021 14:30:25 GMT

Hi Jared,

Thanks for your response. I figured out that the buffer was filled up from some previous transmissions over UART. So, it was an overrun error.

Can you suggest me how to flush the FIFOs or is there any API which I can use with this low level library I am using?

Regards,

Shivek

RE: Blocking UART with timeout using soft timers.

Jared — Wed, 27 Oct 2021 12:47:32 GMT

Hi,

How is data_array[] defined?

Like this?:

static uint8_t data_array[1]

[quote user=""]But the code get stuck in the following do while loop of nrfx_uarte_rx() function from nrfx_uarte.c [/quote]

Here the program waits for either:

The buffer to fill up which should produce the ENDRX event.
The receiver is stopped which produces the RXTO event.
An error appears, which produces the Error event.

It seems that your buffer isn't filling up properly. Are you using HWFC? Have you tried probing the data lines and ensured that the data is sent correctly?

regards

Jared