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.
Now I wonder that this STM32F0's SWD port supporting Daisy Chain or MultiDrop mode so I could do the multiple MCUs programming simultaneously via ST-LINK/V2.