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.
There is STemWin HelloWorld example in "..\STM32Cube_FW_F7_V1.3.0\Projects\STM32746G-Discovery\Applications\STemWin\STemWin_HelloWorld"
You can use it as template project 😊