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[求助] 大神帮忙看下气象站代码串口无数据

麻烦群里的大神帮忙看下小弟下面的气站站代码，传感器由DHT11，BMP180，PM2.5组成的
问题：
1接好传感器串口输出的数据显示传感器检测的温度气压都是零，请问大神代码哪里有问题
2我想上传乐联网，但是怎么也上传不到乐联上。
麻烦群里大神帮忙修正下代码,感谢。

#include <LeweiClient.h>
#include <SPI.h>
#include <Ethernet.h>
#include <dht11.h>
#include <SFE_BMP180.h>
#include <Wire.h>

//dht11
dht11 DHT11;
#define DHT11PIN 2//DTH11的引脚
//GP2Y1010AU0F
#define dustPin A0//Sharp Pin 5夏普传感器5号脚
#define ledPower 3//Sharp pin 3夏普传感器3号脚
int dustVal=0,lastDustVal=0;
const int Time280=280, Time40=40, offTime=9680;
float voltage=0, dustDensity = 0,Clow,Chigh;
int Ilow,Ihigh,AQI;
//BMP180
//SCL-A5,SDA-A4
SFE_BMP180 pressure;
double baseline;

//put your api key here,find it in lewei50.com->my account->account setting
#define LW_USERKEY "YOUR_API_KEY_HERE"
//put your gateway number here,01 as default
#define LW_GATEWAY "01"

//数据发送间隔
#define POST_INTERVAL (30*1000)

//IPAddress ip(192,168,1, 15);
//IPAddress mydns(8,8,8,8);
//IPAddress gw(192,168,1,1);
//IPAddress subnet(255,255,255,0);

LeWeiClient *lwc;

//Sharp
int getDustVal(void){
  int Val;
  // ledPower is any digital pin on the Arduino connected to Pin 3 on the sensor
  digitalWrite(ledPower,LOW); // power on the LED
  delayMicroseconds(Time280);
  Val=analogRead(dustPin); // read the dust value via pin 5 on the sensor
  delayMicroseconds(Time40);
  digitalWrite(ledPower,HIGH); // turn the LED off
  delayMicroseconds(offTime);

  return Val;
}
//BMP180
double getP()
{
  char status;
  double T,P,p0,a;
  // You must first get a temperature measurement to perform a pressure reading.
  // Start a temperature measurement:
  // If request is successful, the number of ms to wait is returned.
  // If request is unsuccessful, 0 is returned.
  status = pressure.startTemperature();
  if (status != 0)
  {
// Wait for the measurement to complete:
delay(status);
// Retrieve the completed temperature measurement:
// Note that the measurement is stored in the variable T.
// Use '&T' to provide the address of T to the function.
// Function returns 1 if successful, 0 if failure.

status = pressure.getTemperature(T);
if (status != 0)
{
   // Start a pressure measurement:
   // The parameter is the oversampling setting, from 0 to 3 (highest res, longest wait).
   // If request is successful, the number of ms to wait is returned.
   // If request is unsuccessful, 0 is returned.
   status = pressure.startPressure(3);
   if (status != 0)
   {
      // Wait for the measurement to complete:
      delay(status);
      // Retrieve the completed pressure measurement:
      // Note that the measurement is stored in the variable P.
      // Use '&P' to provide the address of P.
      // Note also that the function requires the previous temperature measurement (T).
      // (If temperature is stable, you can do one temperature measurement for a number of pressure measurements.)
      // Function returns 1 if successful, 0 if failure.
      status = pressure.getPressure(P,T);
      if (status != 0)
      {
      return P;
      }
      else Serial.println("error retrieving pressure measurement\n");
   }
   else Serial.println("error starting pressure measurement\n");
}
else Serial.println("error retrieving temperature measurement\n");
  }
  else Serial.println("error starting temperature measurement\n");
}

void setup() {
// start serial port:
Serial.begin(9600);
//Sharp
pinMode(ledPower,OUTPUT);
//BMP180
  /* pressure.begin();
Serial.println("BMP180 init success");
//else
{
   // 糟糕，气压计出问题了，多半是连线有问题
   Serial.println("BMP180 init fail (disconnected?)\n\n");
   while(1); // 暂停
}
baseline = getP();

lwc = new LeWeiClient(LW_USERKEY, LW_GATEWAY);*/
}
void loop()
{
  if (lwc)
  {
Serial.println("read data ");

float temp_c;
float humidity;
double a,p;

// Read values from the sensor
temp_c = DHT11.temperature;
humidity = DHT11.humidity;

//BMP180
p = getP();
a = pressure.altitude(p,baseline);

//dht11
dustVal = int(lastDustVal*0.8 + getDustVal()*0.2);
lastDustVal = dustVal;
voltage = dustVal*(5.0/1023);
dustDensity = 0.17*voltage-0.1; //
dustDensity = constrain(dustDensity, 0, 0.5004);
//Serial.print(dustVal); Serial.print("\t");
//Serial.print(voltage,4);  Serial.print("\t");//Serial.print( "V");
//Serial.print(dustDensity,4);Serial.print("\t");//Serial.print("mg/m^3");
if(dustDensity >=0 && dustDensity <=0.0154)          { Clow=0;    Chigh =0.0154;Ilow=0;  Ihigh=50; }
else if(dustDensity >=0.0155 && dustDensity <=0.0404) { Clow=0.0155;Chigh =0.0404;Ilow=51; Ihigh=100;}
else if(dustDensity >=0.0405 && dustDensity <=0.0654) { Clow=0.0405;Chigh =0.0654;Ilow=101;Ihigh=150;}
else if(dustDensity >=0.0655 && dustDensity <=0.1504) { Clow=0.0655;Chigh =0.1504;Ilow=151;Ihigh=200;}
else if(dustDensity >=0.1505 && dustDensity <=0.2504) { Clow=0.1505;Chigh =0.2504;Ilow=201;Ihigh=300;}
else if(dustDensity >=0.2505 && dustDensity <=0.5004) { Clow=0.2505;Chigh =0.5004;Ilow=301;Ihigh=500;}
AQI = (dustDensity-Clow)*(Ihigh-Ilow)/(Chigh-Clow) + Ilow;

//t1,t2.. must using the same name setting on web server.
lwc->append("temp", temp_c);
lwc->append("hum", humidity);
lwc->append("aqi", AQI);
lwc->append("high",a);
//Serial.print("*** data send ***");
lwc->send();
//Grammar changed by Wei&Anonymous ;)
Serial.println("*** send completed ***");

delay(POST_INTERVAL);
}
}

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