add ha ok.

components/Communication/CMakeLists.txt

@@ -1,5 +1,5 @@
 idf_component_register(SRCS 
     MqttClient.h MqttClient.cpp 
     INCLUDE_DIRS .
-    REQUIRES mqtt
+    REQUIRES mqtt json LedController
 )

components/Communication/MqttClient.cpp

@@ -1,35 +1,69 @@
 #include "MqttClient.h"
+#include "LedController.h"
+#include <cJSON.h>
 #include <esp_log.h>
 #include <iostream>
-#include <mqtt_client.h>
+#include <string_view>
 
 static const char *TAG = "mqtt";
 
+void MqttClient::onConnected(struct esp_mqtt_client *client) {
+    ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
+
+    cJSON *root = cJSON_CreateObject();
+    cJSON_AddStringToObject(root, "~", "homeassistant/light/bedroom");
+    cJSON_AddStringToObject(root, "name", "Bedroom");
+    cJSON_AddStringToObject(root, "uniq_id", "bedroom_light");
+    cJSON_AddStringToObject(root, "cmd_t", "~/set");
+    cJSON_AddStringToObject(root, "stat_t", "~/state");
+    cJSON_AddStringToObject(root, "schema", "json");
+    cJSON_AddNumberToObject(root, "brightness_scale", 100);
+
+    const char *modes[] = {
+        "color_temp",
+    };
+    cJSON *supported_color_modes = cJSON_CreateStringArray(modes, sizeof(modes) / sizeof(modes[0]));
+    cJSON_AddItemToObject(root, "supported_color_modes", supported_color_modes);
+
+    cJSON_AddTrueToObject(root, "brightness");
+    auto json = cJSON_PrintUnformatted(root);
+    int msg_id = esp_mqtt_client_publish(client, "homeassistant/light/bedroom/config", json, strlen(json), 1, 0);
+    cJSON_free(json);
+    cJSON_Delete(root);
+    ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
+
+    m_setStatusTopic = "homeassistant/light/bedroom/set";
+    msg_id = esp_mqtt_client_subscribe(client, m_setStatusTopic.c_str(), 0);
+    ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
+}
+
+void MqttClient::onSetStatus(const char *data, int size) {
+    ESP_LOGI(TAG, "set: %s", data);
+    cJSON *root = cJSON_Parse(data);
+    cJSON *brightness = cJSON_GetObjectItem(root, "brightness");
+    if (brightness != nullptr) {
+        ESP_LOGI(TAG, "brightness: %d", brightness->valueint);
+        LedController::instance()->setDuty(1, brightness->valueint);
+    }
+
+    cJSON_Delete(root);
+}
+
 static void log_error_if_nonzero(const char *message, int error_code) {
     if (error_code != 0) {
         ESP_LOGE(TAG, "Last error %s: 0x%x", message, error_code);
     }
 }
 
-static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data) {
+void MqttClient::eventHandler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data) {
+    auto self = reinterpret_cast<MqttClient *>(handler_args);
     ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32 "", base, event_id);
     auto event = reinterpret_cast<esp_mqtt_event_handle_t>(event_data);
     esp_mqtt_client_handle_t client = event->client;
     int msg_id;
     switch ((esp_mqtt_event_id_t)event_id) {
     case MQTT_EVENT_CONNECTED:
-        ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
+        self->onConnected(client);
-        msg_id = esp_mqtt_client_publish(client, "/topic/qos1", "data_3", 0, 1, 0);
-        ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
-
-        msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
-        ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
-
-        msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
-        ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
-
-        msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
-        ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
         break;
     case MQTT_EVENT_DISCONNECTED:
         ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
@@ -47,9 +81,13 @@ static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_
         ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
         break;
     case MQTT_EVENT_DATA:
-        ESP_LOGI(TAG, "MQTT_EVENT_DATA");
+        ESP_LOGI(TAG, "MQTT_EVENT_DATA %s", self->m_setStatusTopic.c_str());
+        if (self->m_setStatusTopic == std::string_view(event->topic, event->topic_len)) {
+            self->onSetStatus(event->data, event->data_len);
+        } else {
             printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
             printf("DATA=%.*s\r\n", event->data_len, event->data);
+        }
         break;
     case MQTT_EVENT_ERROR:
         ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
@@ -74,8 +112,8 @@ bool MqttClient::initialize(const std::string &username, const std::string &pass
     config.credentials.authentication.password = password.c_str();
 
     esp_mqtt_client_handle_t client = esp_mqtt_client_init(&config);
-    esp_mqtt_client_register_event(client, static_cast<esp_mqtt_event_id_t>(ESP_EVENT_ANY_ID), mqtt_event_handler,
+    esp_mqtt_client_register_event(client, static_cast<esp_mqtt_event_id_t>(ESP_EVENT_ANY_ID),
-                                   NULL);
+                                   &MqttClient::eventHandler, this);
     esp_mqtt_client_start(client);
     ESP_LOGI(TAG, "connect to %s, username: %s, password: %s", config.broker.address.uri, config.credentials.username,
              config.credentials.authentication.password);

components/Communication/MqttClient.h

@@ -1,6 +1,7 @@
 #ifndef __MQTTCLIENT_H__
 #define __MQTTCLIENT_H__
 
+#include <mqtt_client.h>
 #include <string>
 
 class MqttClient {
@@ -9,6 +10,12 @@ public:
     bool initialize(const std::string &username, const std::string &password);
 
 protected:
+    static void eventHandler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data);
+    void onConnected(struct esp_mqtt_client *client);
+    void onSetStatus(const char *data, int size);
     MqttClient() = default;
+
+private:
+    std::string m_setStatusTopic;
 };
 #endif // __MQTTCLIENT_H__