For years I wrote embedded C for 8 bit microcontrollers used in industrial controls.

Never again.

Rust is by far a better language for embedded. The only times I would consider it reasonable to write embedded code in C is if you're doing it for fun, or you depend on an existing and well tested / audited codebase or library and your application logic is less complicated than rust to C FFI.

Even then, you won't find me contributing to that effort.