Basic ESP8266 MQTT example This sketch demonstrates the capabilities of the pubsub library in combination with the ESP8266 board/library. It connects to an MQTT server then: - publishes "hello world" to the topic "outTopic" every two seconds - subscribes to the topic "inTopic", printing out...
bool connected = connectAliyunMQTT(mqttClient, PRODUCT_KEY, DEVICE_NAME, DEVICE_SECRET); if (connected) { Serial.println("MQTT connect succeed!"); mqttClient.subscribe(ALINK_TOPIC_PROP_SET); // 订阅属性设置Topic Serial.println("subscribe done"); } } /** * 上报数据 */ void mqttIntervalP...
* @example subscribeTopic("1111",0,SuccessFun,FailureFun); ** 代码语言:javascript 代码运行次数:0 运行 AI代码解释 varMQTT=require("../../utils/mqtt.js");varTimeNumber;//循环订阅设备主题定时器//订阅设备发布的主题try{clearInterval(TimeNumber);}catch(e){}TimeNumber=setInterval(function(){/*...
* @example subscribeTopic("1111",0,SuccessFun,FailureFun); ** varMQTT = require("../../utils/mqtt.js");varTimeNumber;//循环订阅设备主题定时器//订阅设备发布的主题try{ clearInterval(TimeNumber); }catch(e) { } TimeNumber=setInterval( function () {/**订阅主题*/MQTT.subscribeTopic("1111...
之所以叫MQTT是因为是外国人做的这种TCP服务器,外国人呢,为实现这种功能的TCP服务器取了个名字叫 Message Queuing Telemetry Transport 然后取每个首字母 就叫 MQTT了 其实有很多家做MQTT软件,但是呢,我比较喜欢用emqtt 来聊一下具体的MQTT协议了 一,首先咱知道就是个TCP服务器,所以呢,需要先用TCP连接上他们的服务...
ESP8266 MQTT example in an IoT Application The following sections explain a basic programenabling the ESP8266 to connect securely against the Pro Mosquitto to publish and subscribe to topics. The sample application will showcase simple functionality. Essentially,every time a publisher sends a MQTT me...
* @example **/voidMqttReceive(constchar* topic, uint32_t topic_len,constchar*data, uint32_t lengh) { }voidMqttConnect(void);//Á¬½ÓÉÏMQTT»Øµ÷voidMqttDisConnect(void);//MQTT¶Ï¿ªÁ¬½Ó»Øµ÷voidsubscribedCb(intpdata);//¶©Ôij...
/* main.c -- MQTT client example */ #include "ets_sys.h" #include "driver/uart.h" #include "osapi.h" #include "mqtt.h" #include "wifi.h" #include "config.h" #include "debug.h" #include "gpio.h" #include "user_interface.h" ...
Connecting ESP8266 to an MQTT Broker Full Code Connection and Testing Conclusion Resources Introduction MQTT (Message Queuing Telemetry Transport) is a lightweight, publish/subscribe messaging protocol ideal for device communication in bandwidth-constrained and unreliable networks. In IoT applications, MQTT...
MQTT works with SSL/TLS MQTT works with one-way anthentication MQTT works with two-way anthentication 2. 阿里云平台准备 根据阿里官方文档,在阿里云平台创建产品,创建设备,同时自动产生 product key, product secert, device name, device secret。