How to enable / disable MCUboot FOTA

RE: How to enable / disable MCUboot FOTA

Sigurd Hellesvik — Fri, 30 Aug 2024 13:26:56 GMT

[quote user="jju"]1. We have some very timing critical stuff in our firmware, so we would like to check what code is actually running, when including the NCS sample.[/quote]

It is quite magic indeed. To quote myself from the course:

"
use that.
This configuration is named CONFIG_NCS_SAMPLE… as it makes some assumptions about the project. For your custom project, I recommend that you look at what configurations CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU set for you, and include the ones from there you need instead.

Anyways. This enabled the mcumgr library in zephyr, which sets up a BLE service for you which lets you send FOTA over BLE.

It will still be up to you to set up BLE and advertise. The setting just sets up the service.

[quote user="jju"]1. We have some very timing critical stuff in our firmware, so we would like to check what code is actually running, when including the NCS sample.[/quote]

https://github.com/nrfconnect/sdk-zephyr/tree/main/subsys/mgmt/mcumgr

[quote user="jju"]2. We want to use our current App communications to enable DFU, but if the CONFIG_NCS_... stuff is included, this will (I guess) happen automatically ?[/quote]

Yes it will.

But you can see what is done in here, and then not set CONFIG_MCUMGR_TRANSPORT_BT, and instead set it up manually.

RE: How to enable / disable MCUboot FOTA

jju — Fri, 30 Aug 2024 07:12:12 GMT

Okay, maybe I'm just slow today... :-)
I am guessing that the CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y
includes some code that can accept some magic BLE command, that will run the DFU.
But two things:
1. We have some very timing critical stuff in our firmware, so we would like to check what code is actually running, when including the NCS sample.
2. We want to use our current App communications to enable DFU, but if the CONFIG_NCS_... stuff is included, this will (I guess) happen automatically ?

RE: How to enable / disable MCUboot FOTA

Sigurd Hellesvik — Fri, 30 Aug 2024 07:07:03 GMT

[quote user="jju"]I have now read most of the information on the link, but still cannot figure out, how to make the sensor enter bootmode from my firmware ?[/quote]

For BLE, you perform DFU when the application is running.

Then you reset the device, and DFU is performed. No bootmode is needed.

RE: How to enable / disable MCUboot FOTA

jju — Fri, 30 Aug 2024 07:01:09 GMT

Oh, sorry. Our sensor is just a custom board with the nRF52832.

RE: How to enable / disable MCUboot FOTA

Sigurd Hellesvik — Fri, 30 Aug 2024 06:53:02 GMT

What do you mean by "sensor"? Do you mean the nRF microcontroller?

I ask for the clarification because sensor is often used about external hardware connected to the nRF.

RE: How to enable / disable MCUboot FOTA

jju — Fri, 30 Aug 2024 06:28:02 GMT

Thank you.
I have now read most of the information on the link, but still cannot figure out, how to make the sensor enter bootmode from my firmware ?

RE: How to enable / disable MCUboot FOTA

Sigurd Hellesvik — Thu, 29 Aug 2024 09:09:33 GMT

See https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/

Regards,
Sigurd Hellesvik