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.
I got it working after a loads of trouble unfrotunatly it's pretty slow so I would suggest either to interface QuadSPI memory which you have on board already or MicroSD using 4bit SDIO