esp32 链接打印机 esp32连接onenet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 另一种参数

 

 

 

#include <WiFi.h>
#include "DHT.h"
#include "PubSubClient.h"
#include "Ticker.h"
#define DHTPIN 21     
//`#define DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHT11);


int god=0;
const int led =15; //灯的接口
const char *ssid     = "yaoyao"; //wifi名称
const char *password = "love123456";//wifi密码
const char *mqtt_server = "183.230.40.96"; //onenet 的 IP地址
const int port = 6002;                     //端口号
#define mqtt_devid "1056007204" //设备ID
#define mqtt_pubid "578961"        //产品ID
//鉴权信息
#define mqtt_password "dada" //鉴权信息
//#define onenet_apiKey "tnTFSvTHqR0Zxt=CU7AtDZ4Zr60=" //产品API_KEY

WiFiClient espClient;           //创建一个WIFI连接客户端
PubSubClient client(espClient); // 创建一个PubSub客户端, 传入创建的WIFI客户端





Ticker tim1; //定时器,用来循环上传数据


 
void setupWifi(){
  WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print("正在连接中----\n");
        
    }
 
    Serial.print("WIFI已连接\n");
    Serial.println(WiFi.localIP());
}


 
/* 发布多个传感器信息
String sendmsg  打包数据
 
{"senseor1":1213,"senseor2":313.3,"senseor3":543.09,"senseor4":645.0}
注意  ” 转义字符串 \“
 
*/
void pubMQTTmsg_more_name_value(String sendmsg_in)
{


    long lastMsg = 0;
    int sendlen=800;//28 //数组大小
    char msg[sendlen+22]; //数组大小
    char tmp[sendlen];
    char d[3];
    String sendmsg=sendmsg_in;
    sendmsg.toCharArray(tmp, sendlen);
    //Serial.println(tmp);
   
    uint16_t streamLen= strlen(tmp);
    d[0]='\x03';
    d[1] = (streamLen >> 8);
    d[2] = (streamLen & 0xFF);
    snprintf(msg,sizeof(msg),"%c%c%c%s",d[0],d[1],d[2],tmp);
   
    client.publish("$dp", (uint8_t*)msg,streamLen+3,false);
 
    //发送数据到主题
    //delay(500);
    
  
}
 
//收到主题下发的回调, 注意这个回调要实现三个形参 1:topic 主题, 2: payload: 传递过来的信息 3: length: 长度
void callback(char *topic, byte *payload, unsigned int length)
{
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  //for (int i = 0; i < length; i++) {
    //Serial.print((char)payload[i]);
  //}
  Serial.println();
 
  if ((char)payload[0] == '0') {
    digitalWrite(led, LOW);   // 
    god=0;
  } 
  if ((char)payload[0] == '1') {
    digitalWrite(led, HIGH);  // 
    god=1;
  }
  else{}
 
}
 
void clientReconnect()
{
  while (!client.connected()) //再重连客户端
  {
    Serial.print("reconnect MQTT...");
   if (client.connect(mqtt_devid, mqtt_pubid, mqtt_password))
    {
      Serial.println("connected");
    }
    else
    {
      Serial.print("failed");
      Serial.print(client.state());
      Serial.print("try again in 5 sec");
     delay(5000);
    }
  }
}



void setup() {
 
 
  Serial.begin(115200);
  pinMode(led,OUTPUT);//输出
  setupWifi();   //调用函数连接WIFI
  Serial.println(F("DHT11 test!"));
  dht.begin();                                            
  client.setServer(mqtt_server, port);                   //设置客户端连接的服务器,连接Onenet服务器, 使用6002端口
  client.connect(mqtt_devid, mqtt_pubid, mqtt_password); //客户端连接到指定的产品的指定设备.同时输入鉴权信息
  if (client.connected())
  {
    Serial.println("OneNet is connected!");//判断以下是不是连好了.
  }
  //设置好客户端收到信息是的回调
  // client.setCallback(callback); //订阅命令下发主题
  // tim1.attach(5, sendTempAndHumi);  //定时每5秒调用一次发送数据函数sendTempAndHumi
}


void loop(){
    
//    int h = int(dht.readHumidity()); 
//    int t = int(dht.readTemperature()); 
//    if (isnan(h) || isnan(t) ) {
//    
//       h=0;
//       t=0;
//       Serial.println("error t h");
//       
//    }
    
    //Serial.println(h);
    
    if (!WiFi.isConnected()) //先看WIFI是否还在连接
    {
       setupWifi();
    }
    
    if (!client.connected()) //如果客户端没连接ONENET, 重新连接
    {
       clientReconnect();
       delay(100);
    }else{
 
    
       String msg=String("")+"{"     
                 +"\"空气质量\":"+String(21)+","
                 +"\"湿度\":"+String(21)+","
                 +"\"温度\":"+String(21)
                 +"}";
       pubMQTTmsg_more_name_value(msg);
       client.loop(); //客户端循环检测
             
       Serial.print("public the data:");
       Serial.println(msg);
       
       delay(3000);
    }
 
}

　　

 

综合例程

 

 

 

 

#include <WiFi.h>

#include "PubSubClient.h"
#include "Ticker.h"


int god=0;
const int led =15; //灯的接口

const int pin_mq=34;

#include "DHT.h"
#define DHTPIN 16     
//`#define DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHT11);





const char *ssid     = "yaoyao"; //wifi名称
const char *password = "love123456";//wifi密码
const char *mqtt_server = "183.230.40.96"; //onenet 的 IP地址
const int port = 6002;                     //端口号
#define mqtt_devid "1056007204" //设备ID
#define mqtt_pubid "578961"        //产品ID
//鉴权信息
#define mqtt_password "dada" //鉴权信息
//#define onenet_apiKey "tnTFSvTHqR0Zxt=CU7AtDZ4Zr60=" //产品API_KEY

WiFiClient espClient;           //创建一个WIFI连接客户端
PubSubClient client(espClient); // 创建一个PubSub客户端, 传入创建的WIFI客户端





Ticker tim1; //定时器,用来循环上传数据


 
void setupWifi(){
  WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print("正在连接中----\n");
        
    }
 
    Serial.print("WIFI已连接\n");
    Serial.println(WiFi.localIP());
}


 
/* 发布多个传感器信息
String sendmsg  打包数据
 
{"senseor1":1213,"senseor2":313.3,"senseor3":543.09,"senseor4":645.0}
注意  ” 转义字符串 \“
 
*/
void pubMQTTmsg_more_name_value(String sendmsg_in)
{


    long lastMsg = 0;
    int sendlen=800;//28 //数组大小
    char msg[sendlen+22]; //数组大小
    char tmp[sendlen];
    char d[3];
    String sendmsg=sendmsg_in;
    sendmsg.toCharArray(tmp, sendlen);
    //Serial.println(tmp);
   
    uint16_t streamLen= strlen(tmp);
    d[0]='\x03';
    d[1] = (streamLen >> 8);
    d[2] = (streamLen & 0xFF);
    snprintf(msg,sizeof(msg),"%c%c%c%s",d[0],d[1],d[2],tmp);
   
    client.publish("$dp", (uint8_t*)msg,streamLen+3,false);
 
    //发送数据到主题
    //delay(500);
    
  
}
 
//收到主题下发的回调, 注意这个回调要实现三个形参 1:topic 主题, 2: payload: 传递过来的信息 3: length: 长度
void callback(char *topic, byte *payload, unsigned int length)
{
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  //for (int i = 0; i < length; i++) {
    //Serial.print((char)payload[i]);
  //}
  Serial.println();
 
  if ((char)payload[0] == '0') {
    digitalWrite(led, LOW);   // 
    god=0;
  } 
  if ((char)payload[0] == '1') {
    digitalWrite(led, HIGH);  // 
    god=1;
  }
  else{}
 
}
 
void clientReconnect()
{
  while (!client.connected()) //再重连客户端
  {
    Serial.print("reconnect MQTT...");
   if (client.connect(mqtt_devid, mqtt_pubid, mqtt_password))
    {
      Serial.println("connected");
    }
    else
    {
      Serial.print("failed");
      Serial.print(client.state());
      Serial.print("try again in 5 sec");
     delay(5000);
    }
  }
}



void setup() {
 
 
  Serial.begin(115200);
  pinMode(led,OUTPUT);//输出

  //pinMode(pin_mq,INPUT);//输出
  //set the resolution to 12 bits (0-4096)
  analogReadResolution(12);


  
  setupWifi();   //调用函数连接WIFI
  
  Serial.println(F("DHT11 test!"));
  dht.begin();                  
                            
  client.setServer(mqtt_server, port);                   //设置客户端连接的服务器,连接Onenet服务器, 使用6002端口
  client.connect(mqtt_devid, mqtt_pubid, mqtt_password); //客户端连接到指定的产品的指定设备.同时输入鉴权信息
  if (client.connected())
  {
    Serial.println("OneNet is connected!");//判断以下是不是连好了.
  }
  //设置好客户端收到信息是的回调
  // client.setCallback(callback); //订阅命令下发主题
  // tim1.attach(5, sendTempAndHumi);  //定时每5秒调用一次发送数据函数sendTempAndHumi
}


void loop(){
    // 读取温湿度
    float h = float(dht.readHumidity()); 
    float t = float(dht.readTemperature()); 
    if (isnan(h) || isnan(t) ) {
    
       h=0;
       t=0;
       Serial.println("error t h");
       
    }
    //String showms=String(h)+"  "+String(t);
    //Serial.println(showms);
    //读取气体
    int mq_value= analogRead(pin_mq);

    
    
    if (!WiFi.isConnected()) //先看WIFI是否还在连接
    {
       setupWifi();
    }
    
    if (!client.connected()) //如果客户端没连接ONENET, 重新连接
    {
       clientReconnect();
       delay(100);
    }else{
 
    
       String msg=String("")+"{"     
                 +"\"空气质量\":"+String(mq_value)+","
                 +"\"湿度\":"+String(h)+","
                 +"\"温度\":"+String(t)
                 +"}";
       pubMQTTmsg_more_name_value(msg);
       client.loop(); //客户端循环检测
             
       Serial.print("public the data:");
       Serial.println(msg);
       
       delay(3000);
    }
 
}