Is there a way to configure an IDF project when running a GitLab CI/CD pipeline?

[Frowly]

Hi, I have a configured IDF project in a Git repository on a GitLab server. Configured means I ran

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idf.py menuconfig

and the sdkconfig file is check into the repository. When building (aka running the pipeline) though, I want to assign the value of a GitLab environment variable to an entry that's purposely not been set. Basically I want to "run menuconfig without the interactive ui to set some remaining value".

I could write a simple script and set the entry in sdkconfig directly, but at the top of the file it clearly states:

# Automatically generated file. DO NOT EDIT.

Is there there a tool to do this or how is it usually done?

Thanks,
Frow

[ESP_Angus]

Hi Frowly,

Despite the stern warning in the comment, it is possible to edit this file (just need to be careful when doing so). Appending a NAME=VALUE to the end may be enough, depending on what the other settings or requirements are. Or you could use a tool like "sed" to replace the old value with the new value.

If the config variable is one that you've added in your project then to is also possible to define a KConfig entry that says "this entry should have the value of environment variable X", like this:
https://github.com/espressif/esp-idf/bl ... Kconfig#L9


Angus

[Frowly]

Thanks for the quick answer Angus!

Using sed was what I was thinking. So it's nice, that it's actually "allowed" to just replace values in sdkconfig.

The second alternative you described seems very intriguing, though. So I tried it, but it doesn't work properly the way I do it. When I change my Kconfig.projbuild from

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config MY_VARIABLE
        string

to

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config MY_VARIABLE
        string
        option env="MY_VARIABLE"

the value of the environment variable "MY_VARIABLE" appears when running menuconfig, but after closing menuconfig it doesn't get written to sdkconfig. In fact the entire variable doesn't appear. Not even

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CONFIG_MY_VARIABLE=""

without a value. Am I doing something wrong?

Frow

[thefury]

Here's what I've put in my component's CMakeLists.txt:

Specifically, the last line

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1. set(COMPONENT_SRCDIRS ". util")
2. set(COMPONENT_ADD_INCLUDEDIRS ". util")
3. register_component()
4. component_compile_definitions(WIFI_SSID="$ENV{WIFI_SSID}" WIFI_PASSWORD="$ENV{WIFI_PASSWORD}" )

GeSHi © Codebox Plus Extension

Not entirely sure if that's the best way to do it, but it seems to work for me. I have WIFI_SSID and WIFI_PASSWORD defined in GitLab CI/CD variables, and I have it defined in my local environment when building and flashing from a computer. If I need a different value for other environments, I can define environment-specific values in GitLab CI/CD settings as well (the "Scope" column allows you to specify which environment(s) that value should apply to, with * being the default fallback for every other environment that isn't specified)