In general I get the impression that embedded rust is fairly good for while(1) loop applications: the kind of thing you can do with arduino is also usually fair

In general I get the impression that embedded rust is fairly good for while(1) loop applications: the kind of thing you can do with arduino is also usually fairly easy to do in rust, modulo maybe not so good library support for random bits of hardware. What I generally see lacking is support for multitasking: the various HALs generally only support synchronous, usually only busy-loop blocking implementations, which is really limiting for a lot of embedded applications. This kind of thing is hard to get right, though. (in fact, while I like the theory of generic embedded HALs, I have yet to see a good implementation of the concept. Most effective HALs I have seen are specialised to one area or another, usually to one particular application)