STM32WB Forth without BLE, USB, Filesystems, RTOS etc. is not complete, to build this by myself from the scratch overwhelms me. I would like to go the reverse way and use the STM tools like CubeIDE, HAL, CubeMX and integrate the Mecrips Forth into it. Forth as an interactive extension for the STM ecosystem. Mecrisp Forth running as a CMSIS-RTOS thread.
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USB-CDC for serial communication
USB-MSC to make it possible to read and write blocks.