Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

RE: Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

Kriki — Thu, 28 Apr 2022 10:50:34 GMT

Hello Markus,
The Solution worked.
It also works with the UART0 Instance.

Many thanks for your Help.

Regards,

Nick

RE: Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

Albrecht Markus Schellenberger — Wed, 27 Apr 2022 09:03:21 GMT

Hello again Nick,

I have tested this a little bit myself now and here are my conclusions to get it to work:

You should connect a GND pin on the nRF9160 DK with a GND pin on the nRF52840 DK.
You must set the VDD voltage of the nRF9160 DK from 1.8V to 3V, using SW9, as described here.

Now, the application that I have tested this with uses UART1 on each DK. I haven’t used UART0 because I prefer not to use RTT for logging purposes. Possibility, there might be some more issues that I haven’t covered yet, but I hope my findings will help you anyway.

Regards,

Markus

RE: Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

Albrecht Markus Schellenberger — Tue, 26 Apr 2022 11:48:34 GMT

[quote user="Nixk"]Tell me if you need anything else from me.[/quote]

Thanks, Nick! I will :-)

My investigations have not gone that well so far, but I’m on it ;-)

Regards,

Markus

RE: Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

Kriki — Mon, 25 Apr 2022 08:12:48 GMT

Hello Markus,

Thank you for the fast Response!
Tell me if you need anything else from me.

Regards,
Nick

RE: Asynchronous Uart Connection between nRF9160 DK and nRF52840 DK (NCS v1.9.1)

Albrecht Markus Schellenberger — Fri, 22 Apr 2022 11:53:05 GMT

Hello Nick,

I’m afraid I do not have any "straight forward" answer for you here. I have to dig into the issue a little and see if I can find something. I will come back to you.

Regards,

Markus