Struct Device

pub struct Device { /* private fields */ }

A single backlight device that can be toggled ON and OFF.

Examples

use std::path::Path;
let path = Path::new("/sys/class/backlight/intel_backlight");
let dev = Device::new(path);
assert_eq!(dev.bl_power(), path.join(BL_POWER));
assert!(dev.toggle().is_err()); // we don't have permission

Implementations

impl Device

pub fn new<P: AsRef<Path>>(path: P) -> Self

Creates a new device located at path.

pub fn path(&self) -> &Path

Returns the path of the device.

pub fn bl_power(&self) -> &Path

Returns the path of the device power controller.

pub fn toggle(&self) -> Result<i32>

Toggles the state of the device ON and OFF.

The return value is either a std::io::Error or the new state of the device.

Trait Implementations

impl Debug for Device

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.