components/esp_event/include/esp_event_base.h (ESP-IDF)

/* * SPDX-FileCopyrightText: 2018-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include <stdint.h> #ifdef __cplusplus extern "C" { #endif // Defines for declaring and defining event base #define ESP_EVENT_DECLARE_BASE(id) extern esp_event_base_t const id #define ESP_EVENT_DEFINE_BASE(id) esp_event_base_t const id = #id // Event loop library types typedef const char* esp_event_base_t; /**< unique pointer to a subsystem that exposes events */ typedef void* esp_event_loop_handle_t; /**< a number that identifies an event with respect to a base */ typedef void (*esp_event_handler_t)(void* event_handler_arg, esp_event_base_t event_base, int32_t event_id, void* event_data); /**< function called when an event is posted to the queue */ typedef void* esp_event_handler_instance_t; /**< context identifying an instance of a registered event handler */ // Defines for registering/unregistering event handlers #define ESP_EVENT_ANY_BASE NULL /**< register handler for any event base */ #define ESP_EVENT_ANY_ID -1 /**< register handler for any event id */ #ifdef __cplusplus } #endif