feat(esp_event): add esp_event components from esp-idf

Commit ID: 463a9d8b

components/esp_event/event_send.c

@@ -0,0 +1,45 @@
+// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+#include "esp_event.h"
+#include "esp_event_legacy.h"
+
+esp_err_t esp_event_send_noop(system_event_t *event);
+
+extern esp_err_t esp_event_send_legacy(system_event_t *event) __attribute__((weak, alias("esp_event_send_noop")));
+extern esp_err_t esp_event_send_to_default_loop(system_event_t *event) __attribute((weak, alias("esp_event_send_noop")));
+
+
+esp_err_t esp_event_send_noop(system_event_t *event)
+{
+    return ESP_OK;
+}
+
+esp_err_t esp_event_send(system_event_t *event)
+{
+    // send the event to the new style event loop
+    esp_err_t err = esp_event_send_to_default_loop(event);
+    if (err != ESP_OK) {
+        return err;
+    }
+
+    // send the event to the legacy event loop
+    err = esp_event_send_legacy(event);
+    if (err != ESP_OK) {
+        return err;
+    }
+
+    return ESP_OK;
+}