1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
21 #include "esp_event.h"
22 #include "esp_event_loop.h"
25 #include "freertos/FreeRTOS.h"
26 #include "freertos/task.h"
27 #include "freertos/queue.h"
28 #include "freertos/semphr.h"
31 #include "sdkconfig.h"
34 static const char* TAG = "event";
35 static bool s_event_init_flag = false;
36 static QueueHandle_t s_event_queue = NULL;
37 static system_event_cb_t s_event_handler_cb = NULL;
38 static void *s_event_ctx = NULL;
40 static esp_err_t esp_event_post_to_user(system_event_t *event)
42 if (s_event_handler_cb) {
43 return (*s_event_handler_cb)(s_event_ctx, event);
48 static void esp_event_loop_task(void *pvParameters)
52 if (xQueueReceive(s_event_queue, &evt, portMAX_DELAY) == pdPASS) {
53 esp_err_t ret = esp_event_process_default(&evt);
55 ESP_LOGE(TAG, "default event handler failed!");
57 ret = esp_event_post_to_user(&evt);
59 ESP_LOGE(TAG, "post event to user fail!");
65 system_event_cb_t esp_event_loop_set_cb(system_event_cb_t cb, void *ctx)
67 system_event_cb_t old_cb = s_event_handler_cb;
68 s_event_handler_cb = cb;
73 esp_err_t esp_event_send(system_event_t *event)
75 if (s_event_queue == NULL) {
76 ESP_LOGE(TAG, "Event loop not initialized via esp_event_loop_init, but esp_event_send called");
77 return ESP_ERR_INVALID_STATE;
79 portBASE_TYPE ret = xQueueSendToBack(s_event_queue, event, 0);
82 ESP_LOGE(TAG, "e=%d f", event->event_id);
84 ESP_LOGE(TAG, "e null");
91 QueueHandle_t esp_event_loop_get_queue(void)
96 esp_err_t esp_event_loop_init(system_event_cb_t cb, void *ctx)
98 if (s_event_init_flag) {
101 s_event_handler_cb = cb;
103 s_event_queue = xQueueCreate(CONFIG_SYSTEM_EVENT_QUEUE_SIZE, sizeof(system_event_t));
105 xTaskCreatePinnedToCore(esp_event_loop_task, "eventTask",
106 ESP_TASKD_EVENT_STACK, NULL, ESP_TASKD_EVENT_PRIO, NULL, 0);
108 s_event_init_flag = true;