Function esp_idf_svc::sys::esp_mqtt_client_unregister_event
source · pub unsafe extern "C" fn esp_mqtt_client_unregister_event(
client: *mut esp_mqtt_client,
event: i32,
event_handler: Option<unsafe extern "C" fn(_: *mut c_void, _: *const i8, _: i32, _: *mut c_void)>
) -> i32
Expand description
@brief Unregisters mqtt event
@param client mqtt client handle @param event event ID @param event_handler handler to unregister
@return ESP_ERR_NO_MEM if failed to allocate ESP_ERR_INVALID_ARG on invalid event ID ESP_OK on success