nRF5 SDK - UART framing error and break condition using NRFX driver

[gardzielb]

I am developing firmware for nRF52811 and I can't get UART working.

Sending data over TX works fine, but every time I try to receive something from RX, I get an error.

I am using NRFX driver and function nrfx_uart_rx returns error code 3, which, as I found, means NRFX_ERROR_INTERNAL. I also checked UART registers and their values indicate framing error and break condition. My UART settings are baud 9600, 8N1 and hardware flow control disabled.

I would appreciate any help.

[Vidar Berg]

Hello,

I'm not sure why you would get a framing/break error on your first call to nrfx_uart_rx() - maybe you're using the API in Blocking mode? Do you keep getting the error if you call nrfx_uart_rx() again?

Thanks,

Vidar

Update: I made a small demo sample for the nrfx uarte driver you can try:

nRF5_SDK17.1.0_uart_nrfx.zip