# gpiocdev-embedded-hal [](https://github.com/warthog618/gpiocdev-rs/actions/workflows/rust.yml) [](https://github.com/warthog618/gpiocdev-rs) [](https://crates.io/crates/gpiocdev-embdedded-hal)  A Rust library implementing [embedded-hal](https://crates.io/crates/embedded-hal) traits for GPIO lines on Linux platforms using the GPIO character device using [gpiocdev](https://crates.io/crates/gpiocdev). ## Example Usage Reading line value: ```rust use embedded_hal::digital::InputPin; // request the line let mut pin = gpiocdev_embedded_hal::Input::new("/dev/gpiochip0", 23)?; // get the value if pin.is_high()? { println!("Input is high."); } ``` Setting a line: ```rust use embedded_hal::digital::OutputPin; use embedded_hal::digital::PinState; // request the line let mut pin = gpiocdev_embedded_hal::Output::new("/dev/gpiochip0", 23, PinState::High)?; // do something... // change value later pin.set_low()?; ``` Requesting a line by name: ```rust use embedded_hal::digital::InputPin; let mut pin = gpiocdev_embedded_hal::InputPin::from_name("GPIO23")?; ``` Waiting for events on a line: ```rust use embedded_hal::digital::InputPin; use embedded_hal_async::digital::Wait; // request the line let mut pin = gpiocdev_embedded_hal::tokio::Input::new("/dev/gpiochip0", 23)?; // wait for line edge events pin.wait_for_any_edge().await?; ``` Working examples can be found in the [examples](https://github.com/warthog618/gpiocdev-rs/tree/master/embedded-hal/examples) directory. ## License Licensed under either of - Apache License, Version 2.0 ([LICENSE-APACHE](https://github.com/warthog618/gpiocdev-rs/blob/master/LICENSES/Apache-2.0.txt) or ) - MIT license ([LICENSE-MIT](https://github.com/warthog618/gpiocdev-rs/blob/master/LICENSES/MIT.txt) or ) at your option. ## Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.