NMP timeout error with SMP sample / mcumgr on nrf52840dk

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

Sigurd Hellesvik — Mon, 18 Nov 2024 08:42:40 GMT

[quote user="frankenboom"]Would this be a separate ticket? [/quote]

Yep

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

frankenboom — Fri, 15 Nov 2024 13:37:05 GMT

Hi Sigurd, thanks for the help. I used the web version of mcumgr (https://boogie.github.io/mcumgr-web/) and it worked on the first try, so indeed something was not working on the desktop side using mcumgr.

I'm now having a separate issue, where trying to integrate BLE FOTA into my existing application (rather than attempting the example) results in a failure to boot. Would this be a separate ticket?

Many thanks.

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

Sigurd Hellesvik — Wed, 11 Sep 2024 12:50:14 GMT

[quote user="frankenboom"]if you believe the issue lies on the desktop side rather than the device side.[/quote]

I think it is more likely that it is device side.

Our mobile app is very stable, so if it fails with this, it is likely the device.

[quote user="frankenboom"]For the mobile app, it appears we can use the nRF connect device manager (library). Is this correct? [/quote]

Yes

[quote user="frankenboom"]Do you have any guidance for a universal desktop solution? The mcumgr page mentions a "universal replacement" - is there any notion when this would be released?[/quote]

In fact, this mention was removed in Upstream documentation lately: https://github.com/zephyrproject-rtos/zephyr/commit/1906ab33da8970f4098bcacba11cd5f35e572754

I think the note refers to the list of new tools now available, and that you can choose which of them fits your use-case best.

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

frankenboom — Tue, 10 Sep 2024 10:53:55 GMT

Hello,

Thanks for the pointers. I will go through them in detail this week and report back.

Glancing at the "FOTA over Bluetooth Low Energy" section of the course, it appears that either the Device Manager mobile app or the mcumgr tool is recommended. I'm using mac currently and we must be able to use BLE - I can try AuTerm and the mcumgr-web to see if that changes behavior, if you believe the issue lies on the desktop side rather than the device side. At one point in the past I was able to FOTA with some example using device manager (I cannot recall the specifics).

The eventual goal is to provide our customers with an NRF52840 device, along with a mobile app and desktop which should be able to execute a BLE FOTA with the device.

For the mobile app, it appears we can use the nRF connect device manager (library). Is this correct? Do you have any guidance for a universal desktop solution? The mcumgr page mentions a "universal replacement" - is there any notion when this would be released?

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

Sigurd Hellesvik — Mon, 09 Sep 2024 10:23:50 GMT

Hi,

I have written both this course on DFU and this webinar on DFU.
Do you think you can try to follow either of those and see if that fixes your issue?

Also, the mcumgr tool you use is known to be suboptimal, I recommend that you have a look at alternate tools mentioned over at upstream mcumgr docs (both lib an tool has the same name "mcumgr", to confuse us).

Regards,
Sigurd Hellesvik

RE: NMP timeout error with SMP sample / mcumgr on nrf52840dk

frankenboom — Fri, 06 Sep 2024 11:02:01 GMT

Addendum: The NMP error seems to consistently fail at 15.38% of the upload. If I immediately re-run the same image upload command, the error occurs at almost exactly double, 30.54%. This feels like memory running out somewhere?, but I get no warnings or errors in the DK terminal.
The "v3" in the "devkit_output" file was used as a heartbeat to determine whether some part of the application was crashing. It was a printk() statement inside the while(1) block in main.c of the sample.

Some ideas / paths to source files in which to add debug breakpoints for the SMP server firmware would also be appreciated.