Duplicate RTT output from Thingy:91 X

RE: Duplicate RTT output from Thingy:91 X

Øyvind — Mon, 04 Aug 2025 14:15:13 GMT

Hello dm1 , please open a new ticket with more details on your setup.

Thanks.

Kind regards,
Øyvind

RE: Duplicate RTT output from Thingy:91 X

dm1 — Wed, 23 Jul 2025 13:13:13 GMT

I am having exactly the same issue and yes

CONFIG_CONSOLE=n does stop this behavior however shouldn't CONFIG_CONSOLE=y be the correct setting for log output as

CONFIG_RTT_CONSOLE=y depends on it.

RE: Duplicate RTT output from Thingy:91 X

Øyvind — Mon, 19 May 2025 10:58:00 GMT

Hello, that is good news.
Kind regards,
Øyvind

RE: Duplicate RTT output from Thingy:91 X

Scott Grubb — Wed, 14 May 2025 11:53:14 GMT

I think I've found the source of the duplicate RTT messages. Disabling the console in the prj.conf file (CONFIG_CONSOLE=n) stops them.

RE: Duplicate RTT output from Thingy:91 X

Scott Grubb — Wed, 14 May 2025 10:15:46 GMT

Hi Øyvind,

The code is indeed the Connectivity Bridge application. It is unmodified. I created a new application in nRF Connect for VSCode extension based on the sample in ncs 3.0.0 and built it for the thingy91x/nrf5340/cpuapp target. I have not modified the sample in any way.

As I understand it, the Connectivity Bridge allows you to log from the nRF9151 SiP using USB but you still need to use RTT to log from the nRF5340 SoC.

The error originates from this block of code, which enables the USB subsystem when the filesystem and the bulk module are ready. However, it seems that this block of code is being triggered twice.

I'm not too concerned about the error. My main problem is with the duplicate RTT output.

RE: Duplicate RTT output from Thingy:91 X

Øyvind — Wed, 14 May 2025 09:51:23 GMT

Hello,

That is a very odd outcome. Are you able to share what exactly your code does i.e. what steps do I need to replicate the issue?

[quote user=""] It's also a bit concerning to see that the only sample app that is listed as compatible with the nRF5340 SoC in a Thingy:91 X generates run-time errors out of the box[/quote]

What sample are you referring to? Do you mean the Connectivity Bridge? The Connectivity Bridge acts as a USB composite device allowing users to connect to the nRF9151 using USB only, instead of RTT, exposing two UART interfaces to a USB host as two CDC ACM devices

[quote user=""]I believe the error indicates that the USB subsystem is being enabled twice. Should this just be a warning?[/quote]

#define NRF_EALREADY 120 /**< Connection already in progress */

From the looks of the provided logs it seems that you have logging activated twice in some way.

Kind regards,
Øyvind