// WiFiconstchar*ssid ="xxxxx";// Enter your WiFi nameconstchar*password ="xxxxx";// Enter WiFi password// MQTT Brokerconstchar*mqtt_broker ="broker.emqx.io";constchar*topic ="emqx/esp32";constchar*mqtt_username ="emqx";constchar*mqtt_password ="public";constintmqtt_port =1883; 建立...
嵌入式C 客户端:https://os.mbed.com/teams/mqtt/code/MQTTPacket/ ESP8266/ESP32的客户端:https://github.com/tuanpmt/esp_mqtt 基于elang的客户端:https://github.com/emqx/emqtt 基于go的客户端:https://github.com/eclipse/paho.mqtt.golang 6、调试工具 MQTT.fx:http://mqttfx.jensd.de/index.php...
const char* mqtt_server = "xxxxxxxxx"; // 替换为您本地电脑的IP地址 const int mqtt_port = 1883; const char* mqtt_user = "xxxx"; // 可选,如果MQTT服务器需要认证 const char* mqtt_password = "zzzz"; // 可选,如果MQTT服务器需要认证 WiFiClient espClient; PubSubClient client(espClient);...
const char* mqttServer = "华为云MQTT接入地址"; const int mqttPort = 1883; //以下3个参数可以由HMACSHA256算法生成,为硬件通过MQTT协议接入华为云IoT平台的鉴权依据 const char* clientId = ""; const char* mqttUser = ""; const char* mqttPassword = ""; WiFiClient espClient; //ESP32WiFi模型...
使用PubSubClient 连接到公共 MQTT Broker。 c client.setServer(mqtt_broker, mqtt_port); client.setCallback(callback); while (!client.connected()) { String client_id = "esp32-client-"; client_id += String(WiFi.macAddress()); Serial.printf("The client %s connects to the public mqtt brok...
voidsetup() {Serial.begin(115200);connectToWiFi();// Set Root CA certificateesp_client.setCACert(ca_cert);mqtt_client.setServer(mqtt_broker, mqtt_port);mqtt_client.setKeepAlive(60);mqtt_client.setCallback(mqttCallback);connectToMQTT();}voidconnectToWiFi() {WiFi.begin(ssid, password);Seri...
ESP32 mqtt设置服务器IP 搞定蓝牙——第四章(GATT协议) 原理介绍 层次结构 server和client端 Attribute ESP32部分 结构 初始化 两个回调函数 属性表 文章下面用的英文表示: server和client:服务端和客户端 char.:characteristic缩写,特征 Attribute:属性 ATT:Attribute Protocol缩写...
定义一个连接MQTT服务器和订阅主题的函数 def connect_and_subscribe(): global client_id, mqtt_server, topic_sub,mqtt_user,mqtt_pwd client = MQTTClient(client_id, mqtt_server,user=mqtt_user, password=mqtt_pwd, keepalive=60) client.set_callback(sub_cb) client.connect() client.subscribe(topic...
Pin(4)) connectWifi(SSID,PASSWORD) client = MQTTClient(CLIENT_ID, SERVER,0,username,password,60) #create a mqtt client print(client) client.set_callback(sub_cb) #set callback client.connect() #connect mqtt client.subscribe(subscribe_TOPIC) #client subscribes to a topic mytimer=Timer(0)...
实验目的:通过自己制作的手机APP,连接MQTT服务器,获取ESP32单片机的温湿度信息,控制ESP32单片机上的LED开关。 实验准备: 1、硬件:ESP32开发板(型号不限,esp01s也可以)、LED灯、DH11温湿度传感器、面包板等 2、软件: (1)arduino软件,可以到官网https://www.arduino.cc/en/Main/Software下载。