protobuf messaging layer

[sgowda]

Simple wrapper around messages to enable dongle to respond to certain information requests from the app.

[RobertDaleSmith]

@sgowda this looks good 🙏

At some point we should circle back and rip out this nanopb lib and include it as a git submodule. Did you need to make any direct edits to this lib?

Also do I need an updated firmware and desktop app for using protocol buff?

[sgowda]

@sgowda this looks good 🙏

At some point we should circle back and rip out this nanopb lib and include it as a git submodule. Did you need to make any direct edits to this lib?

Also do I need an updated firmware and desktop app for using protocol buff?

Sorry, I missed this comment when I was on vacation!
The nanopb dependency is unmodified. In our internal repo we copied the nanopb code as a way of forking to avoid dependency management issues. Same version is what I copied in here. There are likely better ways to manage the dependency.

[RobertDaleSmith]

@sgowda this looks good 🙏
At some point we should circle back and rip out this nanopb lib and include it as a git submodule. Did you need to make any direct edits to this lib?
Also do I need an updated firmware and desktop app for using protocol buff?

Sorry, I missed this comment when I was on vacation! The nanopb dependency is unmodified. In our internal repo we copied the nanopb code as a way of forking to avoid dependency management issues. Same version is what I copied in here. There are likely better ways to manage the dependency.

All good. This is fine for now. Later I will probably circle back and add it as a git submodule. We can version control a specific fork or commit hash for consistency.