I'm not aware of any drivers out there that work purely based on CMSIS, mostly they are vendor specific (e.g. ST will provide drivers for their Chips based on t

I'm not aware of any drivers out there that work purely based on CMSIS, mostly they are vendor specific (e.g. ST will provide drivers for their Chips based on the stm32 HAL, TI will have Tiva based drivers for TI chips, etc.) if they do exist at all. I'd love to see more code reuse here. I agree that nommu Linux is a bit to heavy for most cases as it will always require external RAM and at that point you might as well consider a cheap Cortex-A chip (well, they are not so easy to source/aren't documented as good as e.g. a stm32) but I'd be more than happy if something like RIOT or ChibiOS got more traction.