QT打开二进制文件（.bin）,串口定时发送

本例由《qt开发环境 - 简易二进制文件打开，串口自发自收》更改来。（由qt官方terminal demo 修改）

实现功能：打开.bin文件，显示文件内容

          通过串口按固定字节大小发送文件

          显示串口收到的内容

下面是源代码：

代码下载地址：http://download.csdn.net/download/zn2857/10194028

/****************************************************************************
**
** Copyright (C) 2012 Denis Shienkov 
** Copyright (C) 2012 Laszlo Papp 
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "mainwindow.h"
#include "ui_mainwindow.h"
//#include "console.h"
#include "settingsdialog.h"

#include 
#include 
#include 

#include 
#include 
#include 
#include 
#include 
#include 


#define APP_DISPLAY_SIZE 64

//! [0]
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
//! [0]
    ui->setupUi(this);
//    console = new Console;
//    console->setEnabled(false);
//    setCentralWidget(console);
//! [1]
    serial = new QSerialPort(this);
//! [1]
    settings = new SettingsDialog;

    ui->actionConnect->setEnabled(true);
    ui->actionDisconnect->setEnabled(false);
    ui->actionQuit->setEnabled(true);
    ui->actionConfigure->setEnabled(true);

    status = new QLabel;
    ui->statusBar->addWidget(status);

    initActionsConnections();

    connect(serial, static_cast(&QSerialPort::error),
            this, &MainWindow::handleError);

//! [2]
    connect(serial, &QSerialPort::readyRead, this, &MainWindow::readData);
//! [2]
//    connect(console, &Console::getData, this, &MainWindow::writeData);
//! [3]
    timer = new QTimer(this);
    connect(timer,SIGNAL(timeout()),this,SLOT(timerTransDate()));
    ulNum = 0;
//    timer->start(1000);
//    setCentralWidget(MainWindow);
}
//! [3]

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


//! [4]
void MainWindow::openSerialPort()
{
    SettingsDialog::Settings p = settings->settings();
    serial->setPortName(p.name);
    serial->setBaudRate(p.baudRate);
    serial->setDataBits(p.dataBits);
    serial->setParity(p.parity);
    serial->setStopBits(p.stopBits);
    serial->setFlowControl(p.flowControl);
    if (serial->open(QIODevice::ReadWrite)) {
//        console->setEnabled(true);
//        console->setLocalEchoEnabled(p.localEchoEnabled);
        ui->actionConnect->setEnabled(false);
        ui->actionDisconnect->setEnabled(true);
        ui->actionConfigure->setEnabled(false);
        showStatusMessage(tr("Connected to %1 : %2, %3, %4, %5, %6")
                          .arg(p.name).arg(p.stringBaudRate).arg(p.stringDataBits)
                          .arg(p.stringParity).arg(p.stringStopBits).arg(p.stringFlowControl));
    } else {
        QMessageBox::critical(this, tr("Error"), serial->errorString());

        showStatusMessage(tr("Open error"));
    }
}
//! [4]

//! [5]
void MainWindow::closeSerialPort()
{
    if (serial->isOpen())
        serial->close();
//    console->setEnabled(false);
    ui->actionConnect->setEnabled(true);
    ui->actionDisconnect->setEnabled(false);
    ui->actionConfigure->setEnabled(true);
    showStatusMessage(tr("Disconnected"));
}
//! [5]

void MainWindow::about()
{
    QMessageBox::about(this, tr("About Simple Terminal"),
                       tr("The Simple Terminal example demonstrates how to "
                          "use the Qt Serial Port module in modern GUI applications "
                          "using Qt, with a menu bar, toolbars, and a status bar."));
}

//! [6]
void MainWindow::writeData(const QByteArray &data)
{
    serial->write(data);
}
//! [6]

//! [7]
void MainWindow::readData()
{
//    QByteArray data = serial->readAll();

//    console->putData(data);
    QByteArray temp = serial->readAll();
    QString buf;

        if(!temp.isEmpty()){
            ui->textBrowser->setTextColor(Qt::black);
//                if(chrReceive->isChecked()){
//                    buf = temp;
//                }else if(hexReceive->isChecked()){
                    for(int i = 0; i < temp.count(); i++){
                        QString s;
                        s.sprintf("%02X ", (unsigned char)temp.at(i));
                        buf += s;
                    }
//                }
//            ui->textBrowser->setText(ui->textBrowser->document()->toPlainText() + buf);
            ui->textBrowser->append(buf);

            QTextCursor cursor = ui->textBrowser->textCursor();
            cursor.movePosition(QTextCursor::End);
            ui->textBrowser->setTextCursor(cursor);

            ui->receivebyteLcdNumber->display(ui->receivebyteLcdNumber->value() + temp.size());
//            ui->statusBar->showMessage(tr("成功读取%1字节数据").arg(temp.size()));

        }

}
//! [7]

//! [8]
void MainWindow::handleError(QSerialPort::SerialPortError error)
{
    if (error == QSerialPort::ResourceError) {
        QMessageBox::critical(this, tr("Critical Error"), serial->errorString());
        closeSerialPort();
    }
}
//! [8]

void MainWindow::initActionsConnections()
{
    connect(ui->actionConnect, &QAction::triggered, this, &MainWindow::openSerialPort);
    connect(ui->actionDisconnect, &QAction::triggered, this, &MainWindow::closeSerialPort);
    connect(ui->actionQuit, &QAction::triggered, this, &MainWindow::close);
    connect(ui->actionConfigure, &QAction::triggered, settings, &SettingsDialog::show);
    connect(ui->actionClear, &QAction::triggered, this, &MainWindow::clearTextBrowser);
    connect(ui->actionAbout, &QAction::triggered, this, &MainWindow::about);
    connect(ui->actionAboutQt, &QAction::triggered, qApp, &QApplication::aboutQt);
}

void MainWindow::showStatusMessage(const QString &message)
{
    status->setText(message);
}

void MainWindow::on_pushButton_clicked()
{
    timer->start(500);
}

void MainWindow::clearTextBrowser()
{
    ui->textBrowser->setText(NULL);
}

void MainWindow::on_openFileButton_clicked()
{
    //get file name
    fileName = QFileDialog::getOpenFileName(this,"Open File",QDir::currentPath());
//    qDebug()<< "fileName is" << fileName;
    ui->filePathLineEdit->setText (fileName);
    if(fileName.isEmpty())
    {
        QMessageBox::information(this,"Error Message", "Please Select a Text File");
        return;
    }
    QFileInfo *pcsfileInfo = new QFileInfo(fileName);
    binSize = pcsfileInfo->size ();

    QFile* file = new QFile;
    file->setFileName(fileName);
    bool ok = file->open(QIODevice::ReadOnly);
    if(ok)
    {
//        QTextStream in(file);
//        ui->textEdit->setText(in.readAll());//read all context from the file
    }
    else
    {
        QMessageBox::information(this,"Error Message", "File Open Error" + file->errorString());
        return;
    }
    QDataStream in(file);
    char * binByte = new char[binSize];
    in.setVersion (QDataStream::Qt_5_9);

    ui->statusBar->showMessage(tr("准备读取数据"));
    in.readRawData (binByte, binSize);      //读出文件到缓存
    ui->statusBar->showMessage(tr("读取数据完毕"));

    tempByte = new QByteArray(binByte, binSize);                //格式转换

    QString *tempStr = new QString(tempByte->toHex ().toUpper ());

    //显示文件内容
    qint8 cnt = 1;
    qint16 kcnt = 0;
    for(qint64 i = 2; i < tempStr->size ();)
    {
        tempStr->insert (i, ' ');//每个字节之间空一格
        i += 3;
        cnt++;
        if(cnt == 8)//每8个字节空2格
        {
            tempStr->insert (i, ' ');
            i += 1;
        }
        if(cnt == 16)//每16个字节空一格
        {
            cnt = 1;
            kcnt ++;
            if(kcnt == 64)//每64行，即1K数据，空一行
            {
                kcnt = 0;
                tempStr->insert (i, '\n');
                i++;
            }
            tempStr->insert (i, '\n');
            i += 3;         //避免换行后开头一个空格,换行相当于从新插入
        }

    }
    ui->statusBar->showMessage(tr("准备显示"));
    ui->fileViewPlainTextEdit->insertPlainText (*tempStr);
    ui->statusBar->showMessage(tr("显示完毕"));

//    timer->start(1000);
//    serial->write(binByte,25);
    delete tempByte;
    delete[] binByte;
    delete tempStr;

    file->close ();
    delete file;
}
void MainWindow::timerTransDate()
{
    qint16 temp = 0;            //剩余待传数据
    qint16 FileSendEndFg;


    QFile *binFile = new QFile(fileName);
    binFile->open (QIODevice::ReadOnly);
    binFile->seek (ulNum * 1024);

    QDataStream in(binFile);
    char * binByte = new char[binSize];
    in.setVersion (QDataStream::Qt_5_9);

    in.readRawData (binByte, binSize);      //读出文件到缓存

    char * binLitByte = new char[64];//bin缓存
    static int binfileseek = 0;

    if(binfileseek > binSize)
    {
        binfileseek = 0;
        timer->stop();
        return;
    }
    memcpy (binLitByte, binByte + binfileseek, 64);
    binfileseek += 64;

    temp = binSize - 1024*ulNum;

    serial->write(binLitByte,64);

    delete binByte;

}