DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

loeti82 — Fri, 02 Jan 2026 13:24:37 GMT

I had a similar behavior like the discussion in this thread.

Here are my observations.

Setup

Hardware: nRF9151 LACA A0A development kit
nRF Connect SDK v3.1.0-6c6e5b32496e
nRF Connect for Desktop v5.2.1
git rev-parse --short HEAD 68c5cd3
from https://github.com/NordicDeveloperAcademy/cell-fund. Required for the exercise
Zephyr OS v4.1.99-1612683d4010
CMake version: 3.21.0
Python 3.12.4
west 1.4.0
Quick Start v1.7.0
Cellular Monitor v2.6.0

I tried

Build and flash the Exercise 1 from Lesson 7: only few data updated in Cellular Monitor
Build and flash the Exercise 1 solution from Lesson 7: only few data updated in Cellular Monitor
Flash Asset Tracker Demo via Quick Start: Values updated I would expect

First Try

Build and flash the Exercise 1 from Lesson 7: only few data updated in Cellular Monitor.

Second Try

Build and flash the Exercise 1 solution from Lesson 7: only few data updated in Cellular Monitor

Third Try

Flash Asset Tracker Demo via Quick Start: Values updated I would expect

Questions

Why does the Asset Tracker reveal more data in the cellular monitor?

Are there any additional settings required in the exercise code to activate/enable?

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

toto cho — Sat, 09 Nov 2024 00:01:15 GMT

Thank you for sharing the terminal as well.

I don't know why, but my dev kit doesn't send +CSCON: 0 and +CSCON: 1, but yours is sending.
I really didn't change anything in the example code, so still wondering why we have the different result...
Anyhow, thank you for the support.

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

Øyvind — Fri, 08 Nov 2024 14:54:14 GMT

Here is the termninal, only from today and not from the modem trace was taken.

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

toto cho — Tue, 05 Nov 2024 13:55:17 GMT

Thank you for checking this.
I still have the same result - only IP is traced, but your result has the LTE RRC protocol and AT command as well.

so I would like to know if you did any other thing with the solution code or any other options for build?
If you don't mind, could you also share the screenshot of the terminal?

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

Øyvind — Fri, 01 Nov 2024 14:06:06 GMT

I have reported to team about this.

I was finally able to test the solution copying the SOLUTION project as you point out. Building for nrf9151dk_nrf9151_ns I got the following output in the Cellular Monitor:

Here is the my .mtrace and wireshark ouput

devzone.nordicsemi.com/.../trace_2D00_2024_2D00_11_2D00_01T14_2D00_02_2D00_42.863Z.mtrace devzone.nordicsemi.com/.../devzone335190_5F00_lesson71.pcapng

Kind regards,
Øyvind

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

toto cho — Thu, 31 Oct 2024 21:35:35 GMT

So, it is not my personal project, but it is from the Devacademy
cellfund_less7_exer1_solution.
(As I said, I followed the course and got the strange results, so I also tried the SOLUTION project, and I also got the same results)

I don't know how to attach the zip file here, but the result that I got is from this example, so you can get it from github : NordicDeveloperAcademy/cell-fund .

"cellfund_less7_exer1_solution" is a completed project, so I just did the build and flashed it to my nRF9151-DK, then I tested based on the instruction from that lesson.
As that is the education course, I have to rely on the information on the courses, so I just want to make sure that I am following the right direction and get the right understanding.

Thank you.

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

Øyvind — Thu, 31 Oct 2024 17:58:01 GMT

Are you able to share your project with me? The one that gives you the results in this ticket

Thanks!

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

toto cho — Wed, 30 Oct 2024 21:49:38 GMT

Hello, Yes, I agree that cellular monitor itself seems to be working.
I put the comparison here.
Case 1 : If the modem trace database is not selected, it has the error.

Case 2 : If the modem trace database is selected with the right version (2.0.1), it doesn't have the error, but only DTLS. Aso no updated information on LTE Network.
(Actually, example code is working with CoAP without any problem.)

I captured the screen shot once again, and 100% sure that I can see only DTLS.
So, can you share these with the DevAcademy team, so I can be sure that I am getting the correct output?

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

Øyvind — Wed, 30 Oct 2024 11:52:29 GMT

Sounds like you have fixed the issue and got it running. I'm not fully aware of what images you are referring to. Could you please provide a side by side comparison? This will allow me to update our DevAacdemy team.

Thanks!

Kind regards,
Øyvind

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

toto cho — Tue, 29 Oct 2024 01:19:41 GMT

Hello,
1) Cellular Monitor version : I tried 2.4.1 (Official) and 2.3.0, and the same result.
2) What configurations did I add to my prj.conf?
- Is this question about what I added to my prj.conf for lesson 4-2?
- I added

CONFIG_NRF_MODEM_LIB_TRACE=y

CONFIG_AT_HOST_LIBRARY=y

- I used the solution of Lesson 7-1 which already has these configurations in its prj.conf.

3) I just tried precompiled image : nrf9151dk_asset_tracker_v2_debug_2024-05-08_eef645c4.hex
- The result is like the below. It seems to work after sending the AT%XMODEMTRACE=1,2

So, it looks like cellular monitor, Wireshark and precompiled image seem to work.
Then can I consider that images on exercise 1 of lesson 7-1 are outdated?
And my tracing result only shows the IP when I tried lesson 7-1. Can you confirm that is correct?
(I wonder if anyone can try lesson 7-1 solution and let me know if you have the different result)

RE: DevAcademy : Cellular ioT Fundamentals Lession 7 - Tracing issue with the example

Øyvind — Mon, 28 Oct 2024 13:30:44 GMT

Hello,

[quote user=""]If the screen shots of Lesson 7.1 on the Devacademy are correct and I might make any mistake, can anyone help what I should check and rectify this issue?[/quote]

The screenshots may be outdated, but should vary too much from what is available today. What version of cellular monitor are you using? Most importantly what configurations did you add to your prj.conf?

Do you get the same results if you are using a precompiled image from the nRF9151DK precompiled package e.g. img_app_bl/debug/nrf9151dk_asset_tracker_v2_debug_2024-05-08_eef645c4.hex ?

Kind regards,
Øyvind