Thingy 91 nRF9160 printing messages to console

RE: Thingy 91 nRF9160 printing messages to console

Achim Kraus — Fri, 10 Nov 2023 08:49:05 GMT

You're welcome.

RE: Thingy 91 nRF9160 printing messages to console

zazas321 — Fri, 10 Nov 2023 08:46:26 GMT

Thank you for your help. While I was replying back to your comment I have realized the stupid mistake I have done. In my nrf9160DK code , I do the following:

printk("Hello world\n");

However, in the serial terminal I used the following settings:

Nottice "Append CR" setting. This setting makes the serial terminal to only print data when it is \r terminated....

After replacing my initial hello world print with the following:

printk("Hello world\n\r");

I can confirm that it works as expected:

Thank you :)

RE: Thingy 91 nRF9160 printing messages to console

Achim Kraus — Fri, 10 Nov 2023 07:09:43 GMT

> My goal is to be able to forward the nRF9160 over to the console via nRF52840.

Sure, and that's what works for the very most I know. Unfortunately I don't know, what you did to break it ;-).

> As I have mentioned in my initial post,

The RTT log, which you mention to show the nRF9160 log , shows the nRF52840 log. Even if you aware of the "SWD select mode", you need to put that in the right position, or?

> I am holding the SW3 button pressed while switching ON the Thingy91.

SW3 => nRF9160

SW4 => nRF52840

Anyway, if the JLINK works that's a good first step. (it would also do with the Programmer app, just select the JLINK not the Thingy.)

So, according your comment, you now have the "Connectivity Bridge application running on the nRF52840 ". That's perfect.

> and simple printk hello world in a loop on the nRF9160.

I guess, you setup a project from the scratch and there is something missing. Though I work from the "other side" (take a working sample and try to reduce it), I have no experience, what went wrong in your case.

Is that the stuff in krupis/thingy91_learning ? There the prj.conf is empty. I have no experience with the defaults, I prefer to have my settings always in the "prj.conf". From your nRF52840 training project:

CONFIG_SERIAL=y
CONFIG_LOG=y

Maybe you try that, to see, if the defaults are different?

RE: Thingy 91 nRF9160 printing messages to console

zazas321 — Fri, 10 Nov 2023 05:54:07 GMT

As I have mentioned in my initial post, I have the connectivity bridge application running on the nRF52840 board. I have took it from the latest NCS v.2.5.0 and flashed it to nRF52840 via external programmer (Segger J-Link) using 10 pin SWD.

See my setup below:

I have tried to flash it via Programmer but for some reason I am not able to put it in MCUboot mode:

I am holding the SW3 button pressed while switching ON the Thingy91. After it is turned ON, I release the SW3 but that does not seem to do anything. However, I am able to program the device with the following HEX:
\thingy91_fw_2023-10-26_1fae141f\img_fota_dfu_hex

Anyways, I prefer flashing the device using external Segger programmer via 10 pin SWD directly from the VSCode nRF Connect.

[quote userid="5203" url="~/f/nordic-q-a/105530/thingy-91-nrf9160-printing-messages-to-console/454958"]Afterwards, switch the "SWD selecting switch" to select the nRF91. Then apply your sample and check, what happens.[/quote]

When selecting the SWD switch to the nRF52 position and monitoring RTT logs:

When selecting the SWD switch to the nRF91 position and monitoring RTT logs:

So to summarise everything up:

1. I have Connectivity Bridge application running on the nRF52840 and simple printk hello world in a loop on the nRF9160. My goal is to be able to forward the nRF9160 over to the console via nRF52840.

RE: Thingy 91 nRF9160 printing messages to console

Achim Kraus — Thu, 09 Nov 2023 14:56:46 GMT

The messages in the RTT logger seems to indicate, that the "SWD selecting switch" selects the nRF52. (That's the small black switch between the usb and 10 pin swd, see Thingy:91 - Programming and debugging interface.)

With that, your JLINK flashs the nRF52840 of the thingy. Please flash the Connectivity bridge you find in the thingy91_fw_2023-10-26_1fae141f.zip (thingy91_fw_2023-10-26_1fae141f/img_app_bl/thingy91_nrf52_connectivity_bridge_2023-10-26_1fae141f.hex). The nRF Connect for Desktop / Programmer App may be used for that.

Afterwards, switch the "SWD selecting switch" to select the nRF91. Then apply your sample and check, what happens.

RE: Thingy 91 nRF9160 printing messages to console

Achim Kraus — Thu, 09 Nov 2023 14:43:03 GMT

> what is running on the nRF52840?

Connectivity bridge you may find that in the thingy91_fw_2023-10-26_1fae141f.zip