MCU BOOT FOTA DFU and building strategy

[STE]

Dear team,
in my design I'm using MCUBOOT to perform FOTA DFU over BLE and I need some confirmation about the building process to be sure to do all the step in a properly way.

As developing IDE consider VS Code.

To flash the device for the first time, I’ll perform a pristine build. In VS Code, I’ll select the build folder, both for the application and the MCUBoot bootloader, and make the pristine build using the ACTIONS tab as is shown in the image below.


If I only need to update the application code (without making any changes to my custom board's .dts or .dtsi files, modifying the prj.conf, or touching the bootloader code) I can simply update the VERSION file, select the application folder in my build configuration and perform a standard build, as shown in the image below.

Could you please confirm whether the above procedures were followed correctly, or if I’ve overlooked something?

Thanks and best regards.

F.

[Hung Bui]

Hi Fabio, 

Yes the new version will be updated to the merged.hex and to the dfu_application.zip when you click build doesn't have to be pristine build. 
Have you tried to test that ? 

[STE]

Dear Hung,

I've did some test, seems working but I need an official confirmation.

Thanks and best regards.

[Hung Bui]

Great. Please be noted that if you modify the project configuration for example add more file or modify the overlay , you should do Pristine build.