1 /* 2 * SPDX-FileCopyrightText: 2018-2023 Espressif Systems (Shanghai) CO LTD 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ESP_EVENT_BASE_H_ 8 #define ESP_EVENT_BASE_H_ 9 10 #ifdef __cplusplus 11 extern "C" { 12 #endif 13 14 // Defines for declaring and defining event base 15 #define ESP_EVENT_DECLARE_BASE(id) extern esp_event_base_t const id 16 #define ESP_EVENT_DEFINE_BASE(id) esp_event_base_t const id = #id 17 18 // Event loop library types 19 typedef const char* esp_event_base_t; /**< unique pointer to a subsystem that exposes events */ 20 typedef void* esp_event_loop_handle_t; /**< a number that identifies an event with respect to a base */ 21 typedef void (*esp_event_handler_t)(void* event_handler_arg, 22 esp_event_base_t event_base, 23 int32_t event_id, 24 void* event_data); /**< function called when an event is posted to the queue */ 25 typedef void* esp_event_handler_instance_t; /**< context identifying an instance of a registered event handler */ 26 27 // Defines for registering/unregistering event handlers 28 #define ESP_EVENT_ANY_BASE NULL /**< register handler for any event base */ 29 #define ESP_EVENT_ANY_ID -1 /**< register handler for any event id */ 30 31 #ifdef __cplusplus 32 } 33 #endif 34 35 #endif // #ifndef ESP_EVENT_BASE_H_ 36
