As a side note: I wish Rust would come to embedded development ASAP running a real time OS written in Rust. You can use massive Boost libraries and Qt frameworks on non-embedded systems with C/C++, but in embedded, there is no such luxury. I am new to it but it is painful and I wish to see a day where we have a complete LLVM based ARM compiler toolchain with Rust sitting on top. I think there were some blog posts about running Rust on STM32 but it is still very early.
Have you looked at TockOS? https://www.tockos.org
I took a class in it about 2 years ago now, it was really cool. I’m not an embedded developer though, so not sure of your needs here.
Ooh that looks pretty interesting!
Tock appears to be a Rust based embedded OS, so relevant to this discussion.