mirror of
https://github.com/espressif/esp-idf.git
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102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
// Copyright 2015-2018 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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//
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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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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_event.h"
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#include "esp_event_legacy.h"
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#include "sdkconfig.h"
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static const char* TAG = "event";
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static system_event_cb_t s_event_handler_cb;
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static void *s_event_ctx;
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static bool s_initialized;
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ESP_EVENT_DEFINE_BASE(SYSTEM_EVENT);
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static void esp_event_post_to_user(void* arg, esp_event_base_t base, int32_t id, void* data)
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{
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if (s_event_handler_cb) {
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system_event_t* event = (system_event_t*) data;
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(*s_event_handler_cb)(s_event_ctx, event);
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}
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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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system_event_cb_t old_cb = s_event_handler_cb;
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s_event_handler_cb = cb;
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s_event_ctx = ctx;
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return old_cb;
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}
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esp_err_t esp_event_send_legacy(system_event_t *event)
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{
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if (!s_initialized) {
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ESP_LOGE(TAG, "system event loop not initialized via esp_event_loop_init");
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return ESP_ERR_INVALID_STATE;
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}
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return esp_event_post(SYSTEM_EVENT, event->event_id, event, sizeof(*event), portMAX_DELAY);
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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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if (s_initialized) {
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ESP_LOGE(TAG, "system event loop already initialized");
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return ESP_ERR_INVALID_STATE;
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}
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esp_err_t err = esp_event_loop_create_default();
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if (err != ESP_OK && err != ESP_ERR_INVALID_STATE) {
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return err;
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}
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err = esp_event_handler_register(SYSTEM_EVENT, ESP_EVENT_ANY_ID, esp_event_post_to_user, NULL);
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if (err != ESP_OK) {
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return err;
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}
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s_initialized = true;
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s_event_handler_cb = cb;
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s_event_ctx = ctx;
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return ESP_OK;
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}
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esp_err_t esp_event_loop_deinit(void)
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{
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if (!s_initialized) {
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ESP_LOGE(TAG, "system event loop not initialized");
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return ESP_ERR_INVALID_STATE;
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}
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esp_err_t err = esp_event_handler_unregister(SYSTEM_EVENT, ESP_EVENT_ANY_ID, esp_event_post_to_user);
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if (err != ESP_OK) {
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return err;
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}
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err = esp_event_loop_delete_default();
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if (err != ESP_OK && err != ESP_ERR_INVALID_STATE) {
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return err;
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}
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s_initialized = false;
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s_event_handler_cb = NULL;
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s_event_ctx = NULL;
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return ESP_OK;
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}
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