esp32中esp_mqtt_client_publish函数 esp32 matter matter协议学习笔记--以乐鑫方案为例 0. 写在前边的话 1. matter 协议基本概念 2. 设备间的本地自动化交互 2.1 同步控制的实例: 2.2 异步通知(订阅、报告) 3. 桥接设备 4. thread 边界路由器 5. 专业名词 0. 写在前边的话 以
mqtt_client: esp_mqtt_handle_transport_read_error: transport_read() error: errno=128 ESP_Project: MQTT_EVENT_ERROR ESP_Project: Error type: 1 ESP_Project: Last error code reported from esp-tls: 0x0 ESP_Project: Last tls stack error number: 0x4c ESP_Project: Last captured errno : 0 mq...
mqttClient.onSubscribe(onMqttSubscribe); // 设置 当MQTT订阅主题时的回调函数 mqttClient.onUnsubscribe(onMqttUnsubscribe); // 设置 当MQTT取消订阅主题时的回调函数 mqttClient.onMessage(onMqttMessage); // 设置 当MQTT订阅主题时的回调函数 mqttClient.onPublish(onMqttPublish); // 设置 当取消MQTT订阅主题...
client.setServer(MQTT_SERVER, MQTT_SERVER_PORT);//连接MQTT服务器 client.setCallback(callback);//绑定回调函数 WiFi.begin(WIFISSID, WIFIPSW);//连接WIFI } void loop() { /*检查WIFI连接*/ if (WiFi.status() != WL_CONNECTED)WIFI_reconnect(); /*若WIFI已经连接,则检查MQTT连接*/ else if (...
WiFiClient espClient; PubSubClient client(espClient); // 创建 MQTT 客户端 // 回调函数:处理接收到的消息 void callback(char* topic, byte* payload, unsigned int length) { Serial.print("Message received on ["); Serial.print(topic); Serial.print("]: "); for (int i = 0; i < length...
Hi all, is esp_mqtt_client_publish an blocking function ? It happens that sometimes my app stucks in esp_mqtt_client_publish(...)Die_32_ Posts: 58 Joined: Wed May 05, 2021 2:42 pm Re: esp_mqtt_client_publish - blocksQuote
msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0); MQTT订阅主题"/topic/qos0" msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0); 电脑控制ESP32点灯 case MQTT_EVENT_DATA://接收到已定阅主题数据 ...
PubSubClient 库 PubSubClient.h库是Arduino中用于实现物联网(IoT)功能的一个库,它支持 publish 和 subscribe 操作,使得Arduino开发板能够与各种物联网平台(如MQTT、CoAP等)进行通信。这个库的主要功能是将Arduino与云平台连接,实现远程控制、数据传输和自动化处理等。 PubSubClient.h库的主要特点如下: ...
MQTT 服务器连接成功后,ESP32 将向 MQTT 服务器发布消息和订阅esp32/test主题消息。 c // publish and subscribemqtt_client.subscribe(mqtt_topic);mqtt_client.publish(mqtt_topic,"Hi EMQX I'm ESP32 ^^");// Publish message upon successful connection ...
PubSubClientmqttClient(espClient);//CAMERA_MODEL_AI_THINKER类型摄像头的引脚定义#definePWDN_GPIO_NUM 32#defineRESET_GPIO_NUM -1#defineXCLK_GPIO_NUM 0#defineSIOD_GPIO_NUM 26#defineSIOC_GPIO_NUM 27#defineY9_GPIO_NUM 35#defineY8_GPIO_NUM 34#defineY7_GPIO_NUM 39#defineY6_GPIO_NUM 36#define...