RPPAL is a Rust library that provides access to the Raspberry Pi GPIO peripheral through either /dev/gpiomem or /dev/mem. Support for additional peripherals, as well as useful helper functions, will be added in future updates. The library is compatible with the BCM2835, BCM2836 and BCM2837 SoCs.
Backwards compatibility for minor revisions isn't guaranteed until the library reaches v1.0.0.
All documentation can be found at doc.golemparts.com/rppal.
Add a dependency for rppal to your Cargo.toml.
toml
[dependencies]
rppal = "0.1"
Link and import rppal from your crate root.
rust
extern crate rppal;
Call GPIO::new() to create a new GPIO with the default settings. In production code, you'll want to parse the result rather than unwrap it.
```rust use rppal::gpio;
let mut gpio = gpio::GPIO::new().unwrap(); ```
```rust extern crate rppal;
use std::thread; use std::time::Duration;
use rppal::gpio::{GPIO, Mode, Level}; use rppal::system::DeviceInfo;
// The GPIO module uses BCM pin numbering. BCM 18 equates to physical pin 12. const GPIO_LED: u8 = 18;
fn main() { let deviceinfo = DeviceInfo::new().unwrap(); println!("Model: {} (SoC: {})", deviceinfo.model(), device_info.soc());
let mut gpio = GPIO::new().unwrap();
gpio.set_mode(GPIO_LED, Mode::Output);
// Blink an LED attached to the pin on and off
gpio.write(GPIO_LED, Level::High);
thread::sleep(Duration::from_millis(500));
gpio.write(GPIO_LED, Level::Low);
} ```
Always be careful when working with the Raspberry Pi's GPIO. Improper use can lead to permanent damage to the Pi or external components.
Copyright (c) 2017 Rene van der Meer. Released under the MIT license.