Type Alias esp_idf_sys::ble_store_read_fn

pub type ble_store_read_fn = Option<unsafe extern "C" fn(obj_type: c_int, key: *const ble_store_key, dst: *mut ble_store_value) -> c_int>;

Searches the store for an object matching the specified criteria. If a match is found, it is read from the store and the dst parameter is populated with the retrieved object.

@param obj_type The type of object to search for; one of the BLE_STORE_OBJ_TYPE_[…] codes. @param key Specifies properties of the object to search for. An object is retrieved if it matches these criteria. @param dst On success, this is populated with the retrieved object.

@return 0 if an object was successfully retreived; BLE_HS_ENOENT if no matching object was found; Other nonzero on error.

Aliased Type

enum ble_store_read_fn {
    None,
    Some(unsafe extern "C" fn(_: i32, _: *const ble_store_key, _: *mut ble_store_value) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: i32, _: *const ble_store_key, _: *mut ble_store_value) -> i32)

Some value of type T.