TinkerNode NB-IoT使用WIFI订阅、发布Easy Iot主题

为了让你的开发板能够在 Arduino IDE中跑起来，首先请参考下文：
https://mc.dfrobot.com.cn/thread-303693-1-1.html

配置：


演示：


代码：
[mw_shl_code=java,false]/*!
* @file Publish_Topic.ino
*
* @brief After the program download is complete.
* @brief You can use the BC20 module to connect to DFRobot Easy IOT cloud platform,
* @brief and publish data to your Topic
*
* @N Easy-IoT - the simplest solution of IoT cloud platform
* @n Website(CN):https://iot.dfrobot.com.cn
* @n Website(EN):http://iot.dfrobot.com
*
* @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
* @licence     The MIT License (MIT)
* @author      [Wuxiao](xiao.wu@dfrobot.com)
* @version  V1.0
* @date  2019-10-29
* @get from https://www.dfrobot.com
*/
#include <WiFi.h>
#include "DFRobot_Iot.h"
#include <PubSubClient.h>
const char* WIFI_SSID       = "******";
const char* WIFI_PASSWORD   = "******";

/*Configure device certificate information*/
String Iot_id = "******";
String Client_ID  = "******";//自定义
String Iot_pwd    = "******";


/*Configure the domain name and port number*/
String EasyIot_SERVER = "182.254.130.180";
uint16_t PORT = 1883;

/*Set the Topic you need to publish to*/
const char * pubTopic = "******";
const char * subTopic = "******";


DFRobot_Iot myIot;
WiFiClient espClient;
PubSubClient client(espClient);
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);
  }
  Serial.println();
}
void ConnectCloud(){
  while(!client.connected()){
    Serial.print("Attempting MQTT connection...");
    /*A device connected to the cloud platform based on an automatically calculated username and password*/
    if(client.connect(myIot._clientId, myIot._username, myIot._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);
        delay(10);

     connectWiFi();
  
  /*Initialize the configuration of OneNet*/
  myIot.init(EasyIot_SERVER, Iot_id, Client_ID, Iot_pwd);
  
  client.setServer(myIot._mqttServer,PORT);
  
  /*Set the callback function to execute the callback function when receiving the subscription information*/
  client.setCallback(callback);
  
  /*Connect to the cloud platform*/
  ConnectCloud();


}

void loop(){
  if(!client.connected()){
    ConnectCloud();
  }
  client.loop();

}[/mw_shl_code]

发布数据：


[mw_shl_code=java,false]/*!
* @file Publish_Topic.ino
*
* @brief After the program download is complete.
* @brief You can use the BC20 module to connect to DFRobot Easy IOT cloud platform,
* @brief and publish data to your Topic
*
* @n Easy-IoT - the simplest solution of IoT cloud platform
* @n Website(CN):https://iot.dfrobot.com.cn
* @n Website(EN):http://iot.dfrobot.com
*
* @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
* @licence     The MIT License (MIT)
* @author      [Wuxiao](xiao.wu@dfrobot.com)
* @version  V1.0
* @date  2019-10-29
* @get from https://www.dfrobot.com
*/
#include "WiFi.h"
#include "DFRobot_Iot.h"
#include <PubSubClient.h>
const char* WIFI_SSID       = "sxs";
const char* WIFI_PASSWORD   = "**************";

/*Configure device certificate information*/
String Iot_id = "RNZYsQIWg";
String Client_ID  = "sxs12345678";
String Iot_pwd    = "gHWLswIWgz";


/*Configure the domain name and port number*/
String EasyIot_SERVER = "182.254.130.180";
uint16_t PORT = 1883;

/*Set the Topic you need to publish to*/
const char * pubTopic = "12IZ3JpWR";
const char * subTopic = "E1RcL1tZg";


DFRobot_Iot myIot;
WiFiClient espClient;
PubSubClient client(espClient);
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);
  }
  Serial.println();
}
void ConnectCloud(){
  while(!client.connected()){
    Serial.print("Attempting MQTT connection...");
    /*A device connected to the cloud platform based on an automatically calculated username and password*/
    if(client.connect(myIot._clientId, myIot._username, myIot._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);
        delay(10);

     connectWiFi();
  
  /*Initialize the configuration of OneNet*/
  myIot.init(EasyIot_SERVER, Iot_id, Client_ID, Iot_pwd);
  
  client.setServer(myIot._mqttServer,PORT);
  
  /*Set the callback function to execute the callback function when receiving the subscription information*/
  client.setCallback(callback);
  
  /*Connect to the cloud platform*/
  ConnectCloud();


}

void loop(){
  if(!client.connected()){
    ConnectCloud();
  }
  client.loop();
  client.publish(pubTopic,"data");
  delay(5000);
  
}[/mw_shl_code]