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实验内容与要求： 在物联网实验箱上实现一个温湿度显示系统，系统上电启动后自动启动此程序。每隔2秒自动刷新温湿度数据。温湿度数据从物联网试验箱自带的温湿度传感器获取。温湿度显示界面采用QT编程技术实现。
//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] |