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https://github.com/espressif/esp-idf.git
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53de9f115f
This change separates definitions in esp_event.h and functions in event.c into several parts: - event structure definitions (esp_event.h) - default implementations of event handlers (event_default_handlers.c) - default implementation of event loop (event_loop.c, esp_event_loop.h) Purpose of this change is to allow applications choose their own poison: - full control of event loop at the expense of more bootstrap code - pre-defined event task firing event callbacks, but less code in app_main.c
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __ESP_EVENT_LOOP_H__
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#define __ESP_EVENT_LOOP_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include "esp_err.h"
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#include "esp_event.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/queue.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Application specified event callback function
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*
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* @param void *ctx : reserved for user
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* @param system_event_t *event : event type defined in this file
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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typedef esp_err_t (*system_event_cb_t)(void *ctx, system_event_t *event);
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/**
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* @brief Initialize event loop
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* Create the event handler and task
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*
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* @param system_event_cb_t cb : application specified event callback, it can be modified by call esp_event_set_cb
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* @param void *ctx : reserved for user
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_event_loop_init(system_event_cb_t cb, void *ctx);
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/**
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* @brief Set application specified event callback function
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*
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* @attention 1. If cb is NULL, means application don't need to handle
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* If cb is not NULL, it will be call when an event is received, after the default event callback is completed
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*
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* @param system_event_cb_t cb : callback
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* @param void *ctx : reserved for user
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*
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* @return system_event_cb_t : old callback
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*/
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system_event_cb_t esp_event_loop_set_cb(system_event_cb_t cb, void *ctx);
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/**
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* @brief Get the queue used by event loop
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*
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* @attention : currently this API is used to initialize "q" parameter
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* of wifi_init structure.
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*
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* @return QueueHandle_t : event queue handle
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*/
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QueueHandle_t esp_event_loop_get_queue(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ESP_EVENT_LOOP_H__ */
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