Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

Simonr — Thu, 22 May 2025 08:13:57 GMT

Hi Chris

Okay, so I was able to reproduce this, but it does not seem to be an issue per se for the sample, just the nRF5340 reporting that it's not able to import a key (not needed by the sample). The peripheral_lbs sample seems to do exactly what it is meant to, but with these error messages because of the connected nRF7002. I will create an internal ticket on this, but since it does seem to work as expected (you're not supposed to pair/bond to this sample) I'm not sure it will be of high priority.

Best regards,

Simon

EDIT: There is indeed an issue with some configs, and a workaround is to set CONFIG_TFM_PROFILE_TYPE_NOT_SET=y in your prj.conf file. Note that this will drastically increase the memory footprint of the application, but it will fix the public key import issue.

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

SeattleChris — Tue, 20 May 2025 15:06:04 GMT

Hi Simon... here's some more data. I have attached main.c as well.

I am using the LBS sample. Build configuration:

Trace...

nRF Connect...

Main.c attached...

devzone.nordicsemi.com/.../0564.main.c

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

Simonr — Tue, 20 May 2025 14:30:03 GMT

I just tried the peripheral_lbs sample in NCS 3.0.0 myself, and can not reproduce this, nor should it use any public keys at all by default. Can you confirm you find it (named NORDIC_LBS( in the nRF Connect for Android app and press CONNECT, and that's what triggers this issue? If so, can you show me the main.c file of the project on your end?

Best regards,

Simon

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

SeattleChris — Mon, 19 May 2025 16:50:13 GMT

Hi Simon,

FYI... it fails to build unless I use the non-secure version of the target (i.e. nrf7002dk/nrf5340/cpuapp/ns).

It is building, loading, and BLE is connecting to nRF Connect but not Bonding. I tried a HW (button) reset and same results. Here's the terminal trace.

I'm new to BLE. Do I need to manually set the public key somewhere in the configuration?

Thanks,

Chris

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

SeattleChris — Mon, 19 May 2025 16:28:47 GMT

Hi Simon,

I'm just now getting back to working on this again. I'm working on Lesson 1 Exercise 1. I am also using the latest version of the SDK (3.0).

I'll let you know how it goes later today.

Thanks,

Chris

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

Simonr — Mon, 19 May 2025 13:56:33 GMT

It's not clear which lesson and excercise you're working on here, so please let me know so I can "compare notes" to that one. It seems to me like you're basing the project on an existing LBS sample, but you should use the already set up project templates in the DevAcademy course github found here. Here you can also sneak peek on the solutions to see if everything matches a finished "working" sample in the _sol projects.

Best regards,

Simon

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

SeattleChris — Fri, 16 May 2025 15:22:23 GMT

Hi Simon,

Thank you for the guidance here. I will try the nrf7002dk/nrf5340/cpuapp build config later today and follow up. On the key question, I am just following the course to a tee. I'm new to BLE and so not specifically familiar as to what I need to do with the key, how it works, etc., yet?

Thanks,

Chris

RE: Dev Academy Bluetooth Low Energy Fundamentals with nRF7002 DK?

Simonr — Fri, 16 May 2025 13:08:56 GMT

The nRF7002 DK is not listed as it has not been tested (being a DK mainly for Wi-Fi). However, it is basically an nRF5340 DK with an nRF7002 companion IC, so if you follow the guide as you would for an nRF5340 DK, but change the build target to nrf7002dk/nrf5340/cpuapp it should work as is. These build warnings are pretty generic and shouldn't matter at all.

What nRF Connect SDK version are you using for going through this course? Doesn't change much, as either way the samples should build and flash for both cores in one fell swoop.

As for the public key issue, have you set it to anything specific in your project or have you followed the DevAcademy course to a tee?

Best regards,

Simon