ESP32无法连接阿里云,MQTT通讯失败
小白一枚,最近在学习物联网,不曾想倒在门槛上。
找了个ESP32控制小灯的教程,根据教程一步一步做的,可最后就是无法激活阿里云设备,云端运行日志不停刷460代码,MQTT消息和设备信息对不上,找不到原因。
恳请大佬帮忙解惑。
代码:
#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>
#include "DFRobot_Aliyun.h"
#define BEDROOD_LIGHT D2
/*配置WIFI名和密码*/
const char * WIFI_SSID = "kakadong";
const char * WIFI_PASSWORD = "130503495";
/*配置设备证书信息*/
String ProductKey = "a1zPNyXbroY";
String ClientId = "12345";/*自定义ID*/
String DeviceName = "device1";
String DeviceSecret = "b8eaa444a600c9eaafa9a64313d43dfb";
/*配置域名和端口号*/
String ALIYUN_SERVER = "iot-as-mqtt.cn-shanghai.aliyuncs.com";
uint16_t PORT = 1883;
/*需要操作的产品标识符*/
String Identifier = "status";
/*需要上报和订阅的两个TOPIC*/
const char * subTopic = "/sys/a1zPNyXbroY/device1/thing/service/property/set";//****set
const char * pubTopic = "/sys/a1zPNyXbroY/device1/thing/event/property/post";//******post
DFRobot_Aliyun myAliyun;
WiFiClient espClient;
PubSubClient client(espClient);
static void openLight(){
digitalWrite(BEDROOD_LIGHT, HIGH);
}
static void closeLight(){
digitalWrite(BEDROOD_LIGHT, LOW);
}
void connectWiFi(){
Serial.print("Connecting to ");
Serial.println(WIFI_SSID);
WiFi.begin(WIFI_SSID,WIFI_PASSWORD);
while(WiFi.status() != WL_CONNECTED){
delay(500);
Serial.print(".");
}
Serial.println();
Serial.println("WiFi connected");
Serial.print("IP Adderss: ");
Serial.println(WiFi.localIP());
}
void callback(char * topic, byte * payload, unsigned int len){
Serial.print("Recevice [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < len; i++){
Serial.print((char)payload[i]);
}
Serial.println();
StaticJsonBuffer<300> jsonBuffer;
JsonObject& root = jsonBuffer.parseObject((const char *)payload);
if(!root.success()){
Serial.println("parseObject() failed");
return;
}
const uint16_t LightStatus = root["params"][Identifier];
if(LightStatus == 1){
openLight();
}else{
closeLight();
}
String tempMseg = "{"id":"+ClientId+","params":{""+Identifier+"":"+(String)LightStatus+"},"method":"thing.event.property.post"}";
char sendMseg[tempMseg.length()];
strcpy(sendMseg,tempMseg.c_str());
client.publish(pubTopic,sendMseg);
}
void ConnectAliyun(){
while(!client.connected()){
Serial.print("Attempting MQTT connection...");
/*根据自动计算的用户名和密码连接到Alinyun的设备,不需要更改*/
if(client.connect(myAliyun.client_id,myAliyun.username,myAliyun.password)){
Serial.println("connected");
client.subscribe(subTopic);
}else{
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
delay(5000);
}
}
}
void setup(){
Serial.begin(115200);
pinMode(BEDROOD_LIGHT,OUTPUT);
/*连接WIFI*/
connectWiFi();
/*初始化Alinyun的配置,可自动计算用户名和密码*/
myAliyun.init(ALIYUN_SERVER,ProductKey,ClientId,DeviceName,DeviceSecret);
client.setServer(myAliyun.mqtt_server,PORT);
/*设置回调函数,当收到订阅信息时会执行回调函数*/
client.setCallback(callback);
/*连接到Aliyun*/
ConnectAliyun();
/*开机先关灯*/
closeLight();
/*上报关灯信息*/
client.publish(pubTopic,("{"id":"+ClientId+","params":{""+Identifier+"":0},"method":"thing.event.property.post"}").c_str());
}
void loop(){
if(!client.connected()){
ConnectAliyun();
}
client.loop();
}