This is a very experimental project to wrap C/C++ libraries for the Arduino in Rust bindings. In most cases you are better off using a native rust crate for your peripheral, but many peripherals do not yet have Rust crates (like the W5100 ethernet shield and the Adafruit NeoPixels).
As of 2022-Feb it has (very incomplete) wrappers for
- the Ethernet library from https://github.com/arduino-libraries/Ethernet.git
- the Adafruit_NeoPixel library from https://github.com/adafruit/Adafruit_NeoPixel.git
Do not be surprised if you have to use unsafe methods because the safe wrappers have not yet been written.
If you are feeling ambitious submit a pull request with your upgrades.
Have a look at ethernet-examples/src for some examples that are basically rewrites of the examples from the
original C++ Ethernet/ library.
This git repository uses submodules to pull in the source for the C/C++ libraries, so you should probably clone it using
git clone --recurse-submodules https://github.com/mutantbob/rust-arduino-wrappers.git
If you forgot that flag while cloning you can fix things with
git submodule update --init --recursive
You might want to read https://git-scm.com/book/en/v2/Git-Tools-Submodules some time to become more familiar with submodules.