- Launch EBlink either from the context menu or via CLI. Note that it will start two GDB server instances on different ports (e.g., 2331 and 2332).
- Launch EmBitz for the CM7 core and configure Remote Debugging to "localhost" on port 2331. Make sure to add "reset" under Reset → Remote Commands.
- Launch another instance of EmBitz for the CM4 core and configure Remote Debugging to "localhost" on port 2332, again adding "reset" under Reset → Remote Commands.
- You can now debug the two cores independently, as if they were separate MCUs.
- If necessary, configure a trigger cell to reset both cores simultaneously (come back if you need help with this) or add extra reset commands in the reset script hook.
Note: I usually run it without synchronizing resets.
Example: https://www.embitz.org/downloads/stm32h7...master.zip