[hexo]

CMSIS is the most bizarre API i've ever seen. This kind of mixing ALLCAPS_WithUnderscores_AndCamelCase is like criminal. Also _Min_Heap_Size. And that is the reason i would never use it and i've always looked for alternatives. Now i've ended up using Ivory/Tower eDSL framework where just about everything is equally complicated - as building a spaceshuttle.

[leggomylibro]

On the bright side, the core CMSIS headers should work with all ARM Cortex-M cores, so you don't get locked into one vendor's HAL to do things like setup interrupts or interact with registers that are common to ARM cores. It also has something approaching first-party support with a permissive license.

I think that the ALLCAPS parts come from acronyms in most cases. Like, NVIC = Nested Vector Interrupt Controller. The naming can get a little bit confusing, but it seems fairly consistent.