RE: MCUBOOT configuration and usage

Hakon — Fri, 10 Sep 2021 14:19:36 GMT

Hello,

[quote user=""]1. If there any complete guide how to setup MCUboot properly?[/quote]

This blog post is the closest thing I could find. You can also look at https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_nrf52.html#fota-upgrades or try running this sample.

[quote user=""]2. Why there are at least two places to define flash regions (config files and board *.dts)? Which one we should consider?[/quote]

You shouldn't go with either of them. This is handled by the partition manager, and is not something you need to worry about.

[quote user=""]3. If we enable RTT console output in MCUboot, the any RTT output doesn't work when running to main application, why? [/quote]

What configs did you set when enabling RTT, and what else did you change?

[quote user=""]4. We're going to implement one application slot because of app size. What is the recommended approach: to implement BLE DFU in MCUboot or use external flash (where main app downloads the image at QSPI NOR flash, and then calls MCUboot API to update it)?[/quote]

You should go with external flash and have the secondary slot on the external flash. BLE DFU will not work in that case.

[quote user=""]5. When trying to start a USB DFU config we just see an unknown device 'MCUBOOT' in Win10 Device Manager and nothing more. Hence, nRF Programmer tool doesn't see the device and can't access it. What we're doing wrong here? BTW, nRF Dongle doesn't create DFU port, just USB CDC ACM - it seems Programmer accesses it.[/quote]

Is the issue reproducible on other platforms/OSes as well? Win10 should have CDC drivers preinstalled, so this would normally be a Win7 issue.

Also, I would recommend you create a separate ticket for this question.

[quote user=""]6. Should CONFIG_IS_BOOTLOADER option be checked for MCUboot configuration?[/quote]

Not as far as I know.

[quote user=""]7. How to enable BLE DFU service (in bootloader or main app)?[/quote]

You should refer to this part of the documenation.