MQTT笔记

mosquitto官网： http://mosquitto.org/man/mqtt-7.html

在macOS安装mosquitto: https://www.jianshu.com/p/4b545332b495

安装MQTT.Fx:http://www.jensd.de/apps/mqttfx/1.7.1/

MQTT.fx的安装和使用:https://blog.csdn.net/tiantang_1986/article/details/85101366

Arduino Client for MQTT pubsubclient

Arduino Client for MQTTAPI Documentation https://pubsubclient.knolleary.net/api

代码参考: https://gist.github.com/boverby/d391b689ce787f1713d4a409fb43a0a4

arduino, Wemos D1测试订阅topic代码：

 
#include 
#include  

const char* ssid = "xxx";  // wifi名称
const char* password = "xxxxxx"; // wifi密码
const char* mqtt_server = "192.168.0.3";  // mqtt服务器地址

int status = WL_IDLE_STATUS;     // the starting Wifi radio's status

WiFiClient wifiClient;
PubSubClient client(wifiClient);
 
const byte ledPin = D8; // 需要控制的led灯
 
void callback(char* topic, byte* payload, unsigned int length) 
{
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  
  for (int i=0;i