[bsder]

It's worse than that.

Something like your Bluetooth communication is dependent upon a C-based "communications stack" that demands to control the event loop and all the registers aren't even documented.

"Where is the LED?" is easy to work around. "How do I put my BLE system into low power advertising mode?" may not even be possible without accessing the C library.

[steveklabnik]

That’s a fun example, because while you’re right, that may also be changing. Android’s new Bluetooth stack is in Rust, in my understanding. We’ll see if more vendors provide even more stuff in Rust in the future!

[cogman10]

Ah, good point. That would be rather tricky to solve.