[嵌入式]ESP8266获取传感器数值，上传阿里云

#include <DHT.h>
#include<ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Wire.h>
#include "Adafruit_SGP30.h"
#include <ArduinoJson.h>

const char* ssid     = "Redmi";       // 连接 WiFi名 ，修改为自己的WiFi名                                      
const char* password = "12345678";          // 连接 WiFi密码，修改为自己的WiFi密码

/******************产品/设备配置(每个人需要根据自己的产品设备信息去动态更换)**********************/
 
#define PRODUCT_KEY "********"  //产品key  从产品详情获取
#define DEVICE_NAME "phone"  //设备deviceName  从设备详情获取
// 服务端相关
#define MQTT_SERVER   PRODUCT_KEY ".iot-as-mqtt.cn-shanghai.aliyuncs.com" //阿里云MQTT服务地址
#define MQTT_PORT     1883                                               //MQTT服务端口
// 校验三元组
#define MQTT_CLIENT_ID  DEVICE_NAME "|securemode=3,signmethod=hmacsha1|" //mqtt clientid
#define MQTT_USERNAME   DEVICE_NAME "&" PRODUCT_KEY                      //mqtt username
#define MQTT_PASSWORD   "BC22B700B31E6452BE3BF495D35B531921CAAAC9"       //mqtt password 通过生成工具获得
// 相关主题 自定义一个主题
#define SUB_TOPIC "/" PRODUCT_KEY "/" DEVICE_NAME "/user/get"      //订阅主题
#define PUB_TOPIC0 "/" PRODUCT_KEY "/" DEVICE_NAME "/user/update"   //发布主题
#define PUB_TOPIC "/sys/" PRODUCT_KEY "/" DEVICE_NAME "/thing/event/property/post"   //发布主题
 
/*************************************************************************************************/

/******************配置ESP8266的引脚**********************/

//温度传感器的引脚和类型配置
#define DHTPIN D5
#define DHTTYPE DHT11

const int humanSensor = D0;  //人体红外传感器引脚
const int fireSensor  = D4;  //火焰传感器引脚
const int ultravioletSensor = A0; //紫外线引脚

/*******************************************************/

/******************传感器的存储变量**********************/

int humanState;      //检测人体的状态，有人为1，无人为0
int fireState;       //检测火焰的状态，有火为1，无火为0
float hum;           //湿度值
float temp;          //温度值

uint16_t tvoc;            //总挥发性有机物
uint16_t co2;             //CO2浓度
uint16_t illumination;     //光照强度
uint16_t ultraviolet;    //紫外线数值

/*****************************************************/

int BH1750address = 0x23;   //光照强度传感器地址端接地
byte buff[2];          //光照强度缓存
 

DHT dht(DHTPIN,DHTTYPE);
Adafruit_SGP30 sgp;

WiFiClient espClient;               //创建wifi客户端
PubSubClient client(espClient);     //创建MQTT客户端

void setup() {
  Serial.begin(115200);
  pinMode(humanSensor,INPUT);  //设置人体红外传感器引脚为输入模式
  pinMode(fireSensor,INPUT);   //设置火焰传感器引脚为输入模式
  dht.begin();   //开启温湿度传感器DHT11
  sgp.begin();   //开启CO2浓度检测

  Wire.begin();
  BH1750_Init(BH1750address);

  setup_wifi();
  client.setServer(MQTT_SERVER,MQTT_PORT); //设置阿里云MQTT服务器地址和端口
  client.setCallback(callback);

}

 
void loop() {
  getHumanState();   //获取人体传感器的状态
  getFireState();    //获取火焰的状态
  getUltraviolet();
  getTempHum();   //获取温度和湿度值
  getVOTC();      //获取总挥发性有机物和二氧化碳的浓度
  getIllumination(); //获取光照强度的数值
  
  if (!client.connected()){
    reconnect();
  }
  client.loop();

  jsonAndPublish();//把获取的数据转变为json格式,并且上传阿里云
  delay(5000);
  
}

void jsonAndPublish(){
  StaticJsonDocument<256> doc;

  doc["id"] = "1";
  doc["version"] = "1.0";
  
  JsonObject params = doc.createNestedObject("params");
  
  params["humanState"] = humanState;
  params["fireState"] = fireState;
  params["hum"] = hum;
  params["temp"] = temp;
  params["tvoc"] = tvoc;
  params["co2"] = co2;
  params["illumination"] = illumination;
  params["ultraviolet"] = ultraviolet;
  doc["method"] = "thing.event.property.post";
  
  char output[256];
  serializeJson(doc, output);
  client.publish(PUB_TOPIC, output);
  
  Serial.println();
  Serial.println(output);
  Serial.println();
}

void getIllumination(){
  if (2 == BH1750_Read(BH1750address))
  {
    illumination = ((buff[0] << 8) | buff[1]) / 1.2;
    Serial.print("光照强度：");
    Serial.print(illumination, DEC);
    Serial.println("[lx]");
  }
}

void getVOTC(){
  if (! sgp.IAQmeasure()) {
      Serial.println("sgp measurement failed");
      return;
  }
  tvoc = sgp.TVOC;
  co2 = sgp.eCO2;
  Serial.print("TVOC "); Serial.print(sgp.TVOC); Serial.println(" ppb\t");
  Serial.print("eCO2 "); Serial.print(sgp.eCO2); Serial.println(" ppm");
}

void getUltraviolet(){
  ultraviolet = analogRead(ultravioletSensor);
  Serial.print("紫外线: ");
  Serial.print(ultraviolet);
  Serial.println();
}

void getTempHum(){
  hum=dht.readHumidity();
  temp=dht.readTemperature();
  Serial.print("hum: ");
  Serial.print(hum);
  Serial.println("%");
 
  Serial.print("temp: ");
  Serial.print(temp);
  Serial.println("C");
}

void getFireState(){
  fireState = digitalRead(fireSensor);
  Serial.print("火焰状态： ");
  if(fireState==1){
    Serial.println("有火");
  }else{
    Serial.println("无火");
  }
}

void getHumanState(){
  humanState= digitalRead(humanSensor);
  Serial.print("人体状态： ");
  if(humanState==1){
    Serial.println("有人");
  }else{
    Serial.println("无人");
  }
}

int BH1750_Read(int address) //
{
  int i = 0;
  Wire.beginTransmission(address);
  Wire.requestFrom(address, 2);
  while (Wire.available()) //
  {
    buff[i] = Wire.read();  // receive one byte
    i++;
  }
  Wire.endTransmission();
  return i;
}
 
void BH1750_Init(int address)
{
  Wire.beginTransmission(address);
  Wire.write(0x10);//1lx reolution 120ms
  Wire.endTransmission();
}

void setup_wifi()
{
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED){
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

//收到订阅Topic信息的回调处理
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();
  // 平台发来命令“1”时开灯
  if ((char)payload[0] == '1'){
    digitalWrite(BUILTIN_LED, HIGH);
  }
  else{
    digitalWrite(BUILTIN_LED, LOW);
  }
}
 
void reconnect()
{
  // Loop until we're reconnected
  while (!client.connected()){
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect(MQTT_CLIENT_ID, MQTT_USERNAME, MQTT_PASSWORD)){ 
      Serial.println("MQTT server connected");
      // 订阅主题
      client.subscribe(SUB_TOPIC);
    }
    else{
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}