Struct rppal::gpio::GPIO

pub struct GPIO { /* fields omitted */ }

Provides access to the Raspberry Pi GPIO.

Methods

impl GPIO

fn new() -> Result<GPIO>

Constructs a new GPIO.

fn set_clear_on_drop(&mut self, clear_on_drop: bool)

When enabled, resets all pins to their original state when GPIO goes out of scope.

Drop methods aren't called when a program is abnormally terminated, for instance when a user presses Ctrl-C, and the SIGINT signal isn't caught. You'll either have to catch those using crates such as simple_signal, or manually call cleanup().

Enabled by default.

fn cleanup(&mut self)

Resets all pins to their original state.

Normally, this method is automatically called when GPIO goes out of scope, but you can manually call it to handle early/abnormal termination. After calling this method, any future calls to other methods won't have any result.

fn mode(&mut self, pin: u8) -> Result<Mode>

Reads the current GPIO pin mode.

fn set_mode(&mut self, pin: u8, mode: Mode)

Changes the GPIO pin mode to input, output or one of the alternative functions.

fn read(&mut self, pin: u8) -> Result<Level>

Reads the current GPIO pin logic level.

fn write(&self, pin: u8, level: Level)

Changes the GPIO pin logic level to high or low.

fn set_pullupdown(&mut self, pin: u8, pud: PullUpDown)

Enables/disables the built-in GPIO pull-up/pull-down resistors.

Trait Implementations

impl Drop for GPIO

fn drop(&mut self)

A method called when the value goes out of scope.