Type Alias gpio_cb_t

Source

pub type gpio_cb_t = Option<unsafe extern "C" fn(arg: *mut c_void)>;

Expand description

@brief Signature of event callback functions triggered from interrupts

@param[in] arg optional context for the callback

Aliased Type§

enum gpio_cb_t {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void)),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "C" fn(_: *mut c_void))

Some value of type T.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 4 bytes

Size for each variant: