BSD Lib impacting serial communication

RE: BSD Lib impacting serial communication

Simon — Mon, 15 Feb 2021 20:54:33 GMT

I'm glad you found the cause!

Always happy to help :)

RE: BSD Lib impacting serial communication

dboling — Mon, 15 Feb 2021 17:59:18 GMT

The problem ended up being a combination of 2 bugs in board_nonsecure.c for our platform. The first was a failure to update the magpio init code to specify a datagram socket. That failed the routine, that then caused the code to skip initializing a required GPIO.

Thanks for you help. I appreciate how responsive you guys are to queries.

Doug

RE: BSD Lib impacting serial communication

Simon — Sat, 06 Feb 2021 19:18:57 GMT

You could take a look at the LPUART sample as well, which uses software flow control, and require much less power than hardware flow control.

RE: BSD Lib impacting serial communication

Simon — Wed, 03 Feb 2021 14:17:31 GMT

Could you try to enable flow control for the uart instance connected to the exernal device? That may make the communication more stable. On the nRF9160 side you can enable it using an overlay file like it's done here: nrf/applications/serial_lte_modem/nrf9160dk_nrf9160ns.overlay.

Best regards,

Simon