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 <denis.shienkov@gmail.com>
** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
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** information use the contact form at https://www.qt.io/contact-us.
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** as follows:
**
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** 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.
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**
****************************************************************************/#include "mainwindow.h"
#include "ui_mainwindow.h"
//#include "console.h"
#include "settingsdialog.h"#include <QMessageBox>
#include <QLabel>
#include <QtSerialPort/QSerialPort>#include <QFile>
#include <QFileDialog>
#include <QDir>
#include <QTextStream>
#include <QDataStream>
#include <QTimer>#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<void (QSerialPort::*)(QSerialPort::SerialPortError)>(&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 <b>Simple Terminal</b> 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 namefileName = 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;}