實驗內容與要求：
在物聯網實驗箱上實現一個溫溼度顯示系統，系統上電啟動後自動啟動此程式。每隔2秒自動重新整理溫溼度資料。溫溼度資料從物聯網試驗箱自帶的溫溼度感測器獲取。溫溼度顯示介面採用QT程式設計技術實現。

//formtemp.cpp
#include "formtemp.h"
#include "ui_formtemp.h"

FormTemp::FormTemp(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FormTemp)
{
    ui->setupUi(this);
    this->init();

}
FormTemp::~FormTemp()
{
    delete ui;
}
void
 
 FormTemp::init()
{
    ui->lcd_temp->setNumDigits(3);
    ui->lcd_temp->setStyleSheet("QLCDNumber{background: transparent;}");
    ui->lcd_hum->setNumDigits(3);
    ui->lcd_hum->setStyleSheet("QLCDNumber{background: transparent;}");
    serial_server = new SerialService();
    serial_server->openCom();
    timer = new
 
 QTimer;
    connect(timer, SIGNAL(timeout()), this, SLOT(displayTempAndHum()));
    timer -> start(2000);
    temphum = new TempHum();
}

void FormTemp::displayTempAndHum()
{
    serial_server->readFromSerial(buff);
    temphum ->setValue(buff);
    if(temphum->getTemperature()&&temphum->getHumidity()){
    ui->lcd_temp->display(temphum->getTemperature());
    ui->lcd_hum->display(temphum->getHumidity());
    }
}
//temphum.cpp
 

#include "temphum.h"

TempHum::TempHum()
{
    temperature = 0;
    humidity = 0;
}
void TempHum::setValue(QByteArray& byte)
{
    temperature = (byte[5] << 8) + byte[6];
    humidity = (byte[7] << 8) + byte[8];
}
int TempHum::getTemperature()
{
    return temperature;
}

int TempHum::getHumidity()
{
    return humidity;
}
//temphum.h
#ifndef TEMPHUM_H
#define TEMPHUM_H

#include <QObject>

class TempHum :public QObject
{
    Q_OBJECT
public:
    explicit TempHum();
    void setValue(QByteArray&);
    int getTemperature();
    int getHumidity();

private :
    int temperature;
    int humidity;
    float light;
};

#endif // TEMPHUM_H