This library provides a rust parser for the Bluetooth Host Controller Interface protocol (HCI), which is used for communication between a controller (bluetooth chip) and host (a phone or PC, for example).
This library is likely to only be useful to you if you are implementing a bluetooth stack yourself. If you are looking for a high-level library to build bluetooth applications in Rust, take a look at rumble.
Currently this library is alpha quality. There are currently very few tests, and large parts of the protocol are not yet implemented.