OK335xS tmp75 Qt 温度读取

/*******************************************************************
 *                    OK335xS tmp75 Qt 温度读取
 * 说明：
 *     简单的Qt显示tmp75温度值，其驱动已经在Linux驱动中存在，只需要
 * 注册一下I2C设备就行了。
 *
 *                                2016-3-26 深圳 南山平山村 曾剑锋
 ******************************************************************/

                    \\\\\\\\\\\-*- 目录 -*-///////////
                    |  一、cat main.c
                    |  二、cat mainwindow.h
                    |  三、cat mainwindow.cpp
                    |  四、cat temperaturethread.h
                    |  五、cat temperaturethread.cpp
                    ||||||||||||||||||||||||||||||||||  

一、cat main.c
    #include "mainwindow.h"
    #include <QApplication>

    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        MainWindow w;
        w.setWindowFlags(w.windowFlags()& ~Qt::WindowMaximizeButtonHint& ~Qt::WindowMinimizeButtonHint);
        w.show();

        return a.exec();
    }

二、cat mainwindow.h
    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include <QMainWindow>
    #include <temperaturethread.h>
    #include <QString>

    namespace Ui {
    class MainWindow;
    }

    class MainWindow : public QMainWindow
    {
        Q_OBJECT

    public:
        explicit MainWindow(QWidget *parent = );
        ~MainWindow();
        TemperatureThread tempThread;

    public slots:
        void dealWithData(QString);

    protected:
        void moveEvent(QMoveEvent *);
        void resizeEvent(QResizeEvent *);
        void closeEvent(QCloseEvent *);

    private:
        Ui::MainWindow *ui;
    };

    #endif // MAINWINDOW_H

三、cat mainwindow.cpp
    #include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QMessageBox>

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

        connect(&tempThread, SIGNAL(msg(QString)),this, SLOT(dealWithData(QString)));

        tempThread.threadRunning = true;
        tempThread.start();
    }

    void MainWindow::dealWithData(QString data) {

        if( data.trimmed().length() ==  ) {
            QMessageBox::about(this, "About", "Please check your temperature modle.");
            exit(-);
        }

        ui->temp->setText(QString("Temperature: ").append(QString::number(data.toFloat()/)).append(" C"));
    }

    MainWindow::~MainWindow()
    {
        delete ui;
    }

    void MainWindow::moveEvent(QMoveEvent *)
    {
        this->move(QPoint(,));
    }

    void MainWindow::resizeEvent(QResizeEvent *)
    {
        this->showMaximized();
    }

    void MainWindow::closeEvent(QCloseEvent *)
    {
        exit();
    }

四、cat temperaturethread.h
    #ifndef TEMPERATURETHREAD_H
    #define TEMPERATURETHREAD_H

    #include <QThread>
    #include <sys/ioctl.h>
    #include <unistd.h>
    #include <fcntl.h>
    #include <QFileInfo>
    #include <QMessageBox>
    #include <QTreeView>
    #include <QDir>
    #include <QFile>
    #include <QDebug>
    #include <QMessageBox>

    class TemperatureThread : public QThread
    {
        Q_OBJECT
    public:
        explicit TemperatureThread(QObject *parent = );
        QString readTempFile(void);

        bool threadRunning;

    signals:
        void msg(QString str);

    public slots:
        void run();

    };

    #endif // TEMPERATURETHREAD_H

五、cat temperaturethread.cpp
    #include "temperaturethread.h"

    #define tmp75Path "/sys/bus/i2c/devices/3-004c/temp1_input"

    TemperatureThread::TemperatureThread(QObject *parent) :
        QThread(parent)
    {
    }

    void TemperatureThread::run(){

        while(threadRunning) {

            emit msg(readTempFile());

            msleep();

        }

    }

    QString TemperatureThread::readTempFile(){

        QFile *file=new QFile(tmp75Path);

        if ( file->exists() ) {
            file->open(QIODevice::ReadOnly|QIODevice::Text);
            QString data = QString(file->readAll());
            file->close();
            return data;
        } else {
            return "";
        }
    }