App version usage in code and configuration

[SirBuhi]

Hi there,

Zephyr has ability for an Application version management. Based on this, I have created a "Version" file, without any file name extension (like .txt).

Now I would like to display the version in the "Device Information Service" defined in my prj.conf like:

CONFIG_BT_DIS_FW_REV_STR=$(APP_VERSION_TWEAK_STRING)

But, this gives me: "Assignment ignored. error: Aborting due to Kconfig warnings".

How can I use the firmware version in the device information service?

Thanks for your answer in advance.

Kind regards,

Patrick

[Håkon Alseth]

Hi,

 

You need to set this in your CMakeLists.txt file. Kconfig cannot take in variables.

set(CONFIG_SOME_CONFIG \"${APP_VERSION_TWEAK_STRING}\" CACHE INTERNAL "")

Make sure to set this before the find_package line.

 

Could you try this and see if that works as expected?

 

Kind regards,

Håkon

[SirBuhi]

Dear Håkon,

While testing with nRF Connect Android application, the value of the Firmware Revision String remains empty.

Any other ideas?

Kind regards,

Patrick

[Håkon Alseth]

Hi Patrick,

 

You do not need to check with the android app, you can just go into build-folder/zephyr/.config and search for the CONFIG_.

Or even easier; add a message in cmake:

include(CMakePrintHelpers)
cmake_print_variables(APP_VERSION_TWEAK_STRING)

 

This will not print unless my_project/VERSION file is present. Here's an example of the content of such file:

VERSION_MAJOR = 2
VERSION_MINOR = 6
PATCHLEVEL = 0
VERSION_TWEAK = 99
EXTRAVERSION =

 

Which will print:

-- APP_VERSION_TWEAK_STRING="2.6.0+99"

 

Kind regards,

Håkon

[SirBuhi]

Dear Håkon,

I have the following in the cmake:

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.20.0)

include(CMakePrintHelpers)
cmake_print_variables(APP_VERSION_TWEAK_STRING)

set(CONFIG_BT_DIS_FW_REV_STR \"${APP_VERSION_TWEAK_STRING}\" CACHE INTERNAL "")

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(new)

zephyr_include_directories(include)

target_sources(app PRIVATE include/main_init.c)
target_sources(app PRIVATE include/bluetooth.c)

target_sources(app PRIVATE src/main.c)

The build output in the terminal is:

-- APP_VERSION_TWEAK_STRING=""

Therefore the same as in the app.

Kind regards,

Patrick

[Håkon Alseth]

Dear Patrick,

 

What is the content of your VERSION file?

edit: I see what you mean, one is set after the other, so ordering of when the CONFIG_BT_DIS_FW_REV_STR is set will make it either to be '' or the content of the prj.conf. I'll see if I can find another way around.

 

Kind regards,

Håkon

[SirBuhi]

Dear Håkon,

The VERSION file looks like this:

VERSION_MAJOR = 5
VERSION_MINOR = 9
PATCHLEVEL = 8
VERSION_TWEAK = 7
EXTRAVERSION = dev

 The folder structure looks like this:

It seems that the version can be read, as tried to do some DFU's yesterday, where the version was displayed in the Android application as I defined it in the file.

Kind regards,

Patrick

[Håkon Alseth]

Dear Patrick,

 

Try to create a Kconfig file in your project, containing this:

config BT_DIS_FW_REV_STR
    default "$(APP_VERSION_TWEAK_STRING)" if "$(APP_VERSION_EXTENDED_STRING)" != ""

source "Kconfig.zephyr"

And see if this configures things as expected now? 

Please note that any settings in your prj.conf / $board.conf that also sets CONFIG_BT_DIS_FW_REV_STR must be removed.

 

Kind regards,

Håkon