使用QT来制作串口终端

为什么要使用QT,因为它是跨平台的。

我现在使用的环境是Win7 64bit,使用VS的编译器来编译QT工程。

安装这套环境简单说一下:先到QT官网下载qt-windows-opensource-5.1.1-msvc2012_opengl-x86_64-offline,然后安装它

(BUT,最近我把QtCreator改成使用Mingw编译了,直接下载带有Mingw32的版本就可以了,这样可以编译出同时在64和32下运行的程序!!)

再自己安装一个VS,我这里安装的是VS2012的

这样就可以在QT Creator中找到编译器了

 

我现在是打算使用QT来做一个串口收发工具,网上找了找相关的资料,发现有两种:qextserialport和QtSerialPort,前者在sourceforge里可以下载得到,后者嘛是QT自带的。我这里选择使用后者,可以参考下面网页上的资料:

http://qt-project.org/doc/qt-5.1/qtserialport/examples.html(已经失效)

http://qt-project.org/doc/qt-5/qtserialport-examples.html

由于我对QT也不太熟悉,所以我先弄一个最简单的控制台程序来开始串口编程。这里的例子就是cenumerator

新建一个QT控制台程序,很简单,选择了控制台程序之后都下一步就可以了。

把里面的源码下载下来,覆盖掉main.cpp

 1 /****************************************************************************
 2 **
 3 ** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
 4 ** Contact: http://www.qt-project.org/legal
 5 **
 6 ** This file is part of the QtSerialPort module of the Qt Toolkit.
 7 **
 8 ** $QT_BEGIN_LICENSE:LGPL$
 9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.  For licensing terms and
14 ** conditions see http://qt.digia.com/licensing.  For further information
15 ** use the contact form at http://qt.digia.com/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL included in the
21 ** packaging of this file.  Please review the following information to
22 ** ensure the GNU Lesser General Public License version 2.1 requirements
23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24 **
25 ** In addition, as a special exception, Digia gives you certain additional
26 ** rights.  These rights are described in the Digia Qt LGPL Exception
27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
28 **
29 ** GNU General Public License Usage
30 ** Alternatively, this file may be used under the terms of the GNU
31 ** General Public License version 3.0 as published by the Free Software
32 ** Foundation and appearing in the file LICENSE.GPL included in the
33 ** packaging of this file.  Please review the following information to
34 ** ensure the GNU General Public License version 3.0 requirements will be
35 ** met: http://www.gnu.org/copyleft/gpl.html.
36 **
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 
42 #include <QTextStream>
43 #include <QCoreApplication>
44 #include <QtSerialPort/QSerialPortInfo>
45 
46 QT_USE_NAMESPACE
47 
48 int main(int argc, char *argv[])
49 {
50     QCoreApplication a(argc, argv);
51     QTextStream out(stdout);
52     QList<QSerialPortInfo> serialPortInfoList = QSerialPortInfo::availablePorts();
53 
54     out << QObject::tr("Total number of ports available: ") << serialPortInfoList.count() << endl;
55 
56     foreach (const QSerialPortInfo &serialPortInfo, serialPortInfoList) {
57         out << endl
58             << QObject::tr("Port: ") << serialPortInfo.portName() << endl
59             << QObject::tr("Location: ") << serialPortInfo.systemLocation() << endl
60             << QObject::tr("Description: ") << serialPortInfo.description() << endl
61             << QObject::tr("Manufacturer: ") << serialPortInfo.manufacturer() << endl
62             << QObject::tr("Vendor Identifier: ") << (serialPortInfo.hasVendorIdentifier() ? QByteArray::number(serialPortInfo.vendorIdentifier(), 16) : QByteArray()) << endl
63             << QObject::tr("Product Identifier: ") << (serialPortInfo.hasProductIdentifier() ? QByteArray::number(serialPortInfo.productIdentifier(), 16) : QByteArray()) << endl
64             << QObject::tr("Busy: ") << (serialPortInfo.isBusy() ? QObject::tr("Yes") : QObject::tr("No")) << endl;
65     }
66 
67     return 0;
68 }

再把cenumerator.pro文件下载下来覆盖新建工程的pro文件,如果嫌烦那只要在我们的QT += core后面加上serialport即可(与core空格隔开)。

 1 #-------------------------------------------------
 2 #
 3 # Project created by QtCreator 2013-12-12T09:17:54
 4 #
 5 #-------------------------------------------------
 6 
 7 QT       += core serialport
 8 
 9 QT       -= gui
10 
11 TARGET = cenumerator
12 CONFIG   += console
13 CONFIG   -= app_bundle
14 
15 TEMPLATE = app
16 
17 SOURCES += main.cpp

编译运行即可了。编译目录会在工程的上一级菜单中!这样的结构容易会把工程弄乱。

这会我把构建和运行中的默认构建目录改成当前文件,在删除了所有makefile文件之后,QT Creator可以正确地编译出exe文件来,但会提示“警告:Qmake不支持源文件目录下的构建目录”什么的云云。

 

虽然我们现在编译是没有问题,但这终究是一个隐患。

 

所以,最后我还是决定不去修改默认构建目录了,让它恢复成../build-%{CurrentProject:Name}-%{CurrentKit:FileSystemName}-%{CurrentBuild:Name},这样默认情况下它还是在上级目录中生成中间文件及最终应用程序。但我对工程本身进行一些设置,使得QT会把编译得的中间文件保存到工程目录下面:

打开项目 -> 构建和运行 -> 概要,不再选中Shadow build,这样工程的编译就会在工程目录下面进行了,也不会再提示“警告:Qmake不支持源文件目录下的构建目录”的错误了。

 喏,看现在所有文件都平躺着了,更清晰一些。

 来运行一看看情况吧,枚举串口:

 

posted @ 2013-12-12 10:24  Merlin-magic  阅读(2169)  评论(0编辑  收藏  举报