How to add new Board with PlatformIO Support?

[derlucas]

Please see my question here in the PIO discussion groups:
https://community.platformio.org/t/try-to-add-new-board-with-zephyr-support-dtsi-file-missing/18581/4

I'm looking for a reason why my local board config in PIO is not working. Why is the file not found with the local config, but working with the "steval_fcu001v1" board.

Any help or hints where i should look are apprechiated.

[martinjaeger]

The problem is that you are using the new pinmux features for STM32 introduced in Zephyr 2.5, but PlatformIO is using current stable release 2.4.

A possible workaround requires a custom fork of the stm32_hal repo which contains a package.json as required by PlatformIO. Afterwards you can point PlatformIO towards that repo. I have done that already for the Libre Solar Charge Controller Firmware develop branch. So it should work if you just add the following lines to platformio.ini:

platform_packages =
    framework-zephyr-hal-stm32@https://github.com/LibreSolar/hal_stm32#v2.5-platformio

Otherwise just take board files from Zephyr v2.4-branch as the basis for your local board config. The Zephyr master branch is always work in progress.