Struct gpio_callback

#[repr(C)]
pub struct gpio_callback {
    pub node: _snode,
    pub handler: Option<unsafe extern "C" fn(_: *const device, _: *mut gpio_callback, _: u32)>,
    pub pin_mask: u32,
}

@brief GPIO callback structure

Used to register a callback in the driver instance callback list. As many callbacks as needed can be added as long as each of them are unique pointers of struct gpio_callback. Beware such structure should not be allocated on stack.

Note: To help setting it, see gpio_init_callback() below

Fields

node: _snode

This is meant to be used in the driver and the user should not mess with it (see drivers/gpio/gpio_utils.h)

handler: Option<unsafe extern "C" fn(_: *const device, _: *mut gpio_callback, _: u32)>

Actual callback function being called when relevant.

pin_mask: u32

A mask of pins the callback is interested in, if 0 the callback will never be called. Such pin_mask can be modified whenever necessary by the owner, and thus will affect the handler being called or not. The selected pins must be configured to trigger an interrupt.

Trait Implementations

impl Debug for gpio_callback

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

Formats the value using the given formatter.