I am impressed with REBOL's lack of dependencies and reasonable use of resources. I am curious just how thin we can get the runtime library both with and without TinyC for use on the STM32 ARM Cortex-M MCU. A typical Cortex-M MCU may have between 64 to 2048 kB of internal flash memory and 32 to 1024 kB of RAM.
The Hello World of the embedded world is blinking LED and is called, affectionately, Blinky. It involves an element of timing and the writing of data to an output register (e.g. GPIOx->ODR for STM32).
I would like to try REBOL for this use case.
What would it take to give this a go on an embedded Cortex-M MCU?