I'm sympathetic. I'm partway into an embedded project on an stm32 / m0 for which there _is_ good rust support through Embassy and it's utterly magical. And at the same time, trying to do something for which there isn't a good no-std crate is, er, anti-magical to the point of forcing me to change the design. The ecosystem isn't as comprehensive yet.

But when it works, wow. This has been the most fun embedded project I've ever done with the least debugging.