Another angle to look at these topics:
- A lot of embedded work can be reduced to MMIO operations; that is the fundamental unit of abstraction that is too low for most non-embedded code
- Computer logic available in rust core is standard. Loops, if statements etc, that determine what  you're trying to do with the MMIMO
- There are rails you can use that are unique to rust that reduce the chance of certain category of error
- You can use point 3 as a tool when convenient, vice something dogmatic