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[讨论交流] IoT套件测评：【二】温湿度传感器模块测试

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本帖最后由 DFSyBK4KmYN 于 2019-5-13 00:56 编辑

温湿度传感器测试：

按照示例教程进行配置，温湿度传感器按照教程配置也很顺利，产品创建步骤可以用之前led模块测评是创建的产品上添加属性来代替。

这边做了一点小偷懒，把灯光操作和温湿度传感器配置在同一个产品和app中进行控制。另外代码中的传感器上报是半分钟一次，我将其改为了5s一次。

本来希望能将两段代码合并一下，做个根据温湿度数据进行报警的小示例，但是在连接温湿度传感器之后，灯的控制似乎也出现了问题；串口没法进行输出的情况下也不是很好进行调试，因此暂时还未成功。

（在没有上云的情况下本地调试，灯也没能亮起。由于开发经验较少，暂时还没能搞懂是哪里出了问题….）

代码如下：

[mw_shl_code=cpp,true]#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>
#include "DFRobot_Aliyun.h"
#include "DFRobot_DHT11.h"

#define DHT11_PIN  D2
#define BEDROOD_LIGHT  D7

/*配置WIFI名和密码*/
const char * WIFI_SSID    = "11111111";
const char * WIFI_PASSWORD = "11111111";

/*配置设备证书信息*/
String ProductKey = "a168bbrZwdr";
String ClientId = "12345";/*自定义ID*/
String DeviceName = "nnEZ5evyhV39V6TnnfxF";
String DeviceSecret = "sIlZ7d0fSqK3XrLDdpF3ffgC44Wvlu39";

/*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(温度和湿度两个标识符)*/
String TempIdentifier = "IndoorTemperature";
String HumiIdentifier = "Humidity";
String LightIdentifier = "light_stat";

/*需要上报和订阅的两个TOPIC*/
const char * subTopic = "/sys/a168bbrZwdr/nnEZ5evyhV39V6TnnfxF/thing/service/property/set";//****set
const char * pubTopic = "/sys/a168bbrZwdr/nnEZ5evyhV39V6TnnfxF/thing/event/property/post";//******post

DFRobot_Aliyun myAliyun;
WiFiClient espClient;
PubSubClient client(espClient);
DFRobot_DHT11 DHT;

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);
  }
  Serial.println();
}

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);

  /*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\":{\""+LightIdentifier+"\":0},\"method\":\"thing.event.property.post\"}").c_str());
}

uint8_t tempTime = 0;
void loop(){
  if(!client.connected()){
ConnectAliyun();
  }
  if(tempTime > 3){
tempTime = 0;
DHT.read(DHT11_PIN);
Serial.print("DHT.temperature=");
Serial.println(DHT.temperature);
Serial.print("DHT.humidity");
Serial.println(DHT.humidity);
client.publish(pubTopic,("{\"id\":"+ClientId+",\"params\":{\""+TempIdentifier+"\":"+DHT.temperature+",\""+HumiIdentifier+"\":"+DHT.humidity+"},\"method\":\"thing.event.property.post\"}").c_str());
  }else{
//digitalWrite(LED_BUILTIN, HIGH);
if(DHT.humidity>50 || DHT.temperature>30){
   int i=0;
   for(i=0;i<2;++i){
   openLight();
   delay(400);
   closeLight();
   delay(400);
   }
}
   else{
   openLight();
delay(1000);
//digitalWrite(LED_BUILTIN, LOW);
   closeLight();
delay(1000);
  }
  tempTime++;
  client.loop();
  }
}
[/mw_shl_code]