Zephyr SMP Server sample does not work on nRF52840 DK

RE: Zephyr SMP Server sample does not work on nRF52840 DK

V1incentC — Tue, 26 Sep 2023 12:46:08 GMT

The warnings are gone after the reboot.
Thanks a lot for your help!

RE: Zephyr SMP Server sample does not work on nRF52840 DK

AHaug — Tue, 26 Sep 2023 12:40:15 GMT

Glad to hear that you resolved the issue with the guide and a different phone

AFAIK the warnings and errors highlighted are caused by LFS needs to be initialized, which is usually handled sometime right after restarting the firmware

In my end the warning and error is gone after restarting the firmware both for the initial firmware running, and the updated firmware after dfu, i.e: Flash, reboot dk and see the warnings disappear, perform dfu -> reboot DK and see warnings disappear

Does the warnings persists after you reboot the dk after performing DFU?

Kind regards,
Andreas

RE: Zephyr SMP Server sample does not work on nRF52840 DK

V1incentC — Tue, 26 Sep 2023 10:50:11 GMT

Hi Andreas,

Thank you for your detailed response. I followed the steps you provided and managed to perform a firmware update successfully when I switched to a different phone (Pocophone F1).

However, I encountered an error in the RTT log related to LittleFS. Here’s the log for your reference:

The error message “Corrupted dir pair at {0x0, 0x1}” appeared and it seems that LittleFS couldn’t mount and had to format. I’m wondering if this is something I should be concerned about

Kind regards,
Vincent

RE: Zephyr SMP Server sample does not work on nRF52840 DK

AHaug — Tue, 26 Sep 2023 06:42:50 GMT

Hi,

Unfortunately I've not been able to reproduce the issue you see by following the sample documentation. From the image below you can see that DFU with BLE using nRF Connect App

Setup:

nRF52840DK, NCS v2.4.0, Samsung Galaxy Android phone

Build with Bluetooth overlay using west build -b nrf52840dk_nrf52840 -- - DEXTRA_CONF_FILE=overlay.bt.conf or by adding the extra configuration file in the VS Code extension when choosing build configuration
Flash the firmware to a 52840DK
Check that it's running using for instance J-Link RTT Viewer or the built in RTT Viewer in VS Code extension
Build once more in a new directory to make sure that it's a new project using west build -b nrf52840dk_nrf52840 -d build_1 -- - DEXTRA_CONF_FILE=overlay.bt.conf or by adding the extra configuration file in the VS Code extension when choosing build configuration
Upload the bin app_uppdate.bin located in build/zephyr to somewhere your phone can access
Open nRF Connect and find the device. Connect to it
Press the DFU button (top right) and upload the bin. Choose test and confirm
Observe that the process goes through and the new firmware is now running on the board

Does your steps differ from these steps?

Kind regards,
Andreas

RE: Zephyr SMP Server sample does not work on nRF52840 DK

V1incentC — Mon, 25 Sep 2023 14:16:51 GMT

I think it's version 1.0.0

RE: Zephyr SMP Server sample does not work on nRF52840 DK

AHaug — Mon, 25 Sep 2023 13:02:14 GMT

Thank you for supplying this. I will have a look at the log and try to recreate what you observe.

Could you state which revision your nRF52840DK is? It should be visible on the sticker attached on the board

Kind regards,
Andreas

RE: Zephyr SMP Server sample does not work on nRF52840 DK

V1incentC — Mon, 25 Sep 2023 12:07:40 GMT

I'm using nRF Connect SDK v2.4.0
Realme GT 5G (Android)
I have used the default nrf52840dk_nrf52840 board
I have tired with unmodified and modified sample code and I had the same issue in both cases

I appended the log file to this message. I connected to the device and triggered dfu.

devzone.nordicsemi.com/.../Log-2023_2D00_09_2D00_25-14-02-17.txt

RE: Zephyr SMP Server sample does not work on nRF52840 DK

AHaug — Mon, 25 Sep 2023 11:51:43 GMT

Hi,

I need you to answer some questions before we can pinpoint the issue

Which SDK version are you using?
Which smartphone and smartphone OS are you running the nRF Connect App on?

[quote user=""]The problem is that the SMP Server sample works fine on my custom board, but not on the nRF52840 DK.[/quote]

This is typically the other way around, i.e that it works on a DK out of the box and not the custom board.

Have you made any modifications to the board files in the SDK making your custom board act as the default 52840 board?
Have you modified the zephyr smp sample at any point? Do you see the same thing when you build with an unmodified sample?

It would also be helpful if you could provide me with the full device log up until the error occurs

Kind regards;
Andreas