rust/bt-mcs: Handle GATT read requests for mandatory characteristics

Implement GATT read request handling for the mandatory characteristics
defined in the MCS spec.

Maintain a local `McsLocalState` holding mandatory characteristic values
initialized to spec-defined defaults. Some of these may be specified by
the builder.

Process GATT read requests on the MCS Server by responding with
appropriate byte representations, handling long-read offsets, and
returning `GattError::ReadNotPermitted` or `GattError::InvalidOffset`
where appropriate.

Bug: 540400364
Test: cargo test -p bt-mcs, ./presubmit.sh
Change-Id: Ic4b6c989b0e82850a6e521f57a13abc1b7ee644f
Reviewed-on: https://bluetooth-review.googlesource.com/c/bluetooth/+/3720
2 files changed
tree: 6f623ae7f781eac13613a684db455bc0a3a67357
  1. .agents/
  2. docs/
  3. infra/
  4. rust/
  5. .gitignore
  6. AUTHORS
  7. CONTRIBUTING.md
  8. GEMINI.md
  9. LICENSE
  10. OWNERS
  11. PATENTS
  12. presubmit.sh
  13. README.md
README.md

Bluetooth Shared Libraries

What is this?

This is a repository for shared libraries and tools that can be useful for multiple Bluetooth stacks.

These tools and libraries are meant to be:

  • Stack-agnostic and platform-agnostic
  • Implement a useful subset of a published Bluetooth specification.

It has been started as a repository for developing Rust crates but can be easily expanded to include libraries and tools written in other languages.

What is this not?

It is not a full Bluetooth stack. Google has two officially open-source Bluetooth stacks:

Structure

  • rust - Rust Crates
  • docs - General documentation (documentation for each library/tool is included in their directories)