Cannot assign a value to CONFIG_MCUBOOT_IMAGE_VERSION

[AndyM]

Hello

I'm suing the smp_svr sample from the Zephyr SDK 2..6.1

I want to change the CONFIG_MCUBOOT_IMAGE_VERSION to force the OTA DFU ( over bluetooth ) but when I add an extra CMake argument i.e -DCONFIG_MCUBOOT_IMAGE_VERSION ="1.2.3" I get the following

"warning: attempt to assign the value '1.2.3' to the undefined symbol MCUBOOT_IMAGE_VERSION"

If I remove the extra CMake argument the resulting update image manifest in the dfu_application.zip  has 

"version_MCUBOOT": "0.0.0+0"  - so I assume the bootloader will not update the image?

Tried to include a .conf file with CONFIG_MCUBOOT_IMAGE_VERSION ="1.2.3"  - it builds but has no effect on the "version_MCUBOOT" variable  in the manifest

What am I missing?

Thanks

Andy

[Vidar Berg]

Hello,

The way the image version is applied was changed in SDK v2.5.0. From the migration guide for nRF Connect SDK v2.5.0 (link):

Here is an example of what a VERSION file may look like: 

https://github.com/nrfconnect/sdk-nrf/blob/v2.6.1/samples/bluetooth/peripheral_uart/VERSION 

Best regards,

Vidar

[AndyM]

That worked, thank you!