Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
Thank you so much for your fast answer, actually it was a correct one !
I have other issues but it is not the subject of this post, and I'm currently trying to solve it.