Rust gpiochip

Rust gpiochip 旨在在不需要封装任何C代码或直接进行底层系统调用的前提下，为用户提供对 Linux gpiochip 设备的完全访问。

示例

extern crate gpiochip as gpio;

/// Print information about first gpiochip
fn main() {
    let chip = gpio::GpioChip::new("/dev/gpiochip0").unwrap();

    println!("GPIOChip 0:");
    println!(" Name:  {:?}", chip.name);
    println!(" Label: {:?}", chip.label);
    println!(" Lines: {:?}", chip.lines);
    println!("");

    for i in 0..chip.lines {
        let info = chip.info(i).unwrap();

        println!(" GPIO {:?}: {:?}", info.gpio, info.name);
        println!("     Consumer: {:?}", info.consumer);
        println!("     Flags: {:?}", info.flags);
    }
}

extern crate gpiochip as gpio;

/// Simple get/set example
fn main() {
    let chip = gpio::GpioChip::new("/dev/gpiochip0").unwrap();
    let gpio_a = chip.request("gpioA", gpio::RequestFlags::INPUT, 0, 0).unwrap();
    let gpio_b = chip.request("gpioA", gpio::RequestFlags::OUTPUT | gpio::RequestFlags::ACTIVE_LOW, 1, 0).unwrap();

    let val = gpio_a.get().unwrap();
    gpio_b.set(val).unwrap();
}

extern crate gpiochip as gpio;

/// GPIO events
fn main() {
    let chip = gpio::GpioChip::new("/dev/gpiochip0").unwrap();

    let gpio_a = chip.request_event("gpioA", 0, gpio::RequestFlags::INPUT, gpio::EventRequestFlags::BOTH_EDGES).unwrap();
    let gpio_b = chip.request_event("gpioB", 1, gpio::RequestFlags::INPUT, gpio::EventRequestFlags::BOTH_EDGES).unwrap();

    let bitmap = gpio::wait_for_event(&[&gpio_a, &gpio_b], 1000).unwrap();

    if bitmap & 0b01 == 0b01 {
        let event = gpio_a.read().unwrap();
        println!("gpioA: event @ {:?} - {:?}", event.timestamp, event.id);
    }

    if bitmap & 0b10 == 0b10 {
        let event = gpio_b.read().unwrap();
        println!("gpioB: event @ {:?} - {:?}", event.timestamp, event.id);
    }
}

许可证

© 2018 Sebastian Reichel

ISC 许可证

在此授予任何目的（无论是否付费）使用、复制、修改和/或分发此软件的许可，前提是上述版权声明和本许可声明出现在所有副本中。

软件按“原样”提供，作者对此软件不承担任何保证，包括所有明示或暗示的保证，包括适销性和适用性。在任何情况下，作者均不对任何特殊、直接、间接或后果性损害或任何因使用或性能此软件而产生的任何损害（包括但不限于使用、数据或利润损失）负责，无论该损害是因合同、疏忽还是其他侵权行为引起的，无论该损害是否与使用或性能此软件有关。