Depends on the protocol. I’ve working prototypes of DALI (lighting protocol) and KNX (building automation) stacks completely in Elixir (except for a few lines of C for hard-realtime stuff). Certainly both are really slow (1200 and 9600 bit/s), but still.
Implementing a protocol with binary pattern matching is just great. You can literally copy the specs. Coming from C this is just mind-blowing for me at the moment.
