nRF52: How to recover from UART BREAK condition

RE: nRF52: How to recover from UART BREAK condition

Jacob — Thu, 04 Jun 2020 06:20:16 GMT

Hi,

Thanks for looking into this. A colleague of mine has taken over this thing, and it may be caused by another issue (for which a disable/enable procedure happened to help for). He has created another thread here regarding that issue, but I'm unable to find it (the devzone really isn't easy to navigate!).

For now, I think this thread can be closed.

Thanks, Jacob

RE: nRF52: How to recover from UART BREAK condition

Simon — Wed, 03 Jun 2020 23:42:36 GMT

I'm trying to dig into your problem, but I'm not able to reproduce your issue. I tried to communicate through UART between an nRF9160 and an nRF52840 with flow control enabled. I set the UART RX line of the nRF5280 to GND on the nRF9160, but didn't need to restart the nRF52840 to continue the communication.

Could you upload your nRF52 sample? Or you could check out the samples I have attached and see if you are able to recreate the error/modify it to recreate the error.

devzone.nordicsemi.com/.../UART.zip

Best regards,

Simon

RE: nRF52: How to recover from UART BREAK condition

Jacob — Thu, 28 May 2020 14:11:00 GMT

Hi,

Well, that still doesn't solve the issue really. Is it really reasonable that the UART malfunctions in this manner when a BREAK is encountered?

Thanks, Jacob

RE: nRF52: How to recover from UART BREAK condition

Simon — Thu, 28 May 2020 14:00:24 GMT

Would it be possible to add a pull-up resistor to the GPIO set as RXD as explained in this ticket?

Best regards,

Simon

RE: nRF52: How to recover from UART BREAK condition

Jacob — Wed, 27 May 2020 06:44:31 GMT

I'm using flow control by the way.