Type Alias riot_sys::ble_gatt_attr_fn

pub type ble_gatt_attr_fn = Option<unsafe extern "C" fn(conn_handle: u16, error: *const ble_gatt_error, attr: *mut ble_gatt_attr, arg: *mut c_void) -> c_int>;

The host will free the attribute mbuf automatically after the callback is executed. The application can take ownership of the mbuf and prevent it from being freed by assigning NULL to attr->om.

Aliased Type

enum ble_gatt_attr_fn {
    None,
    Some(unsafe extern "C" fn(_: u16, _: *const ble_gatt_error, _: *mut ble_gatt_attr, _: *mut c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: u16, _: *const ble_gatt_error, _: *mut ble_gatt_attr, _: *mut c_void) -> i32)

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:

• None: 0 bytes
• Some: 4 bytes