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分类: 嵌入式

2014-03-29 21:47:28

1.设置LED测试程序的UI界面

复制上篇文章说做的Helloworld.ui,改名leds.ui并修改其caption为My leds,同时删除掉原来界面上所有的控件。

点击check Box,在窗体上放置4个check Box控件,其name属性为m_ledx(x=1,2,3,4),caption为LEDx(x=1,2,3,4)。保存后退出。

2.编写代码,还是需要3个文件:main.cpp, main_form.cpp, main_form.h

main.cpp

#include "main_form.h"
#include 
QTOPIA_ADD_APPLICATION("leds",TMainForm)
QTOPIA_MAIN
main_form.cpp

#include "main_form.h"
//#include 
#include 
#include  
#include  
#include 
#include  
#include 
#include  

TMainForm::TMainForm(QWidget * parent, const char * name, WFlags f) 
    : TMainFormBase(parent, name, f) 
{ 
    //::system("insmod /lib/modules/ok6410_leds.ko");
    //因为我的LED驱动是做成模块,所以需要先加载模块,
   //但在此处加载后点击QT界面却没法控制板上的LED亮灭,
   //据说是system这个方法会导致阻塞??希望您能帮我解答!
   //所以我把led模块的加载放到了启动led的脚本上了
    m_fd = ::open("/dev/leds0", O_RDONLY); 
    if (m_fd < 0) { 
        m_fd = ::open("/dev/leds", O_RDONLY); 
    } 
 
    connect(m_led1, SIGNAL(clicked()), this, SLOT(checkBoxClicked()) );
    connect(m_led2, SIGNAL(clicked()), this, SLOT(checkBoxClicked()) );
    connect(m_led3, SIGNAL(clicked()), this, SLOT(checkBoxClicked()) );
    connect(m_led4, SIGNAL(clicked()), this, SLOT(checkBoxClicked()) );
 
    checkBoxClicked(); 
    
} 
 
TMainForm::~TMainForm() 
{ 
    ::close(m_fd); 
    ::system("rmmod ok6410_leds");//这里移除掉led模块
} 

void TMainForm::checkBoxClicked() 
{ 
    ioctl(m_fd, int(!m_led1->isChecked()), 0); 
    ioctl(m_fd, int(!m_led2->isChecked()), 1); 
    ioctl(m_fd, int(!m_led3->isChecked()), 2); 
    ioctl(m_fd, int(!m_led4->isChecked()), 3); 
}
main_form.h

#if !defined (__MAIN_FORM_H__) 
# define __MAIN_FORM_H__ 
#include "leds.h" 
//#include 
class TMainForm: public TMainFormBase { 
     Q_OBJECT 
public: 
     TMainForm(QWidget * parent = 0, const char * name = 0, WFlags f = WType_TopLevel) ;
     virtual ~TMainForm(); 
 
//public slots: 
//      void closeButtonClicked(); 
private slots: 
    void checkBoxClicked();
private: 
    int m_fd; 
}; 
#endif
3.还需要一个leds.pro文件,内容如下:

CONFIG += qtopiaapp
CONFIG -= buildQuicklaunch
HEADERS = main_form.h
SOURCES = main_form.cpp main.cpp
INTERFACES = leds.ui
TARGET = leds

4.编写交叉编译的脚本buildarm.sh

#!/bin/bash 
source /home/my/qtopia2.2.0/arm-qtopia2.2.0/qtopia-free-2.2.0/setQpeEnv
qmake -spec qws/linux-arm-g++ -o Makefile.target *.pro 
make -f Makefile.target clean 
make -f Makefile.target
运行buildarm.sh生成leds的可执行文件,拷贝到开发板根目录下/opt/Qtopia/bin目录下

5.编写启动led测试程序的脚本,放在开发板根目录下/bin/里面

如下:

#!/bin/sh
export TSLIB_ROOT=/usr/local/tslib
export TSLIB_TSDEVICE=/dev/event0
export TSLIB_TSEVENTTYPE=H3600
export TSLIB_CONFFILE=/usr/local/tslib/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/local/tslib/lib/ts
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0

export QWS_MOUSE_PROTO=Tslib:/dev/event0
#export QWS_MOUSE_PROTO=TPanel:/dev/input/event1
#export QWS_MOUSE_PROTO="Tslib:/dev/input/event1 MouseMan:/dev/input/mice"
#export QWS_MOUSE_PROTO=MouseMan:/dev/input/mice
export QWS_KEYBOARD="TTY:/dev/tty1"
export KDEDIR=/opt/konqueror

if [ -c /dev/event0 ]; then

        echo "touch..."
        export QWS_MOUSE_PROTO='TPanel:/dev/event0'
     
        if [ ! -e /etc/pointercal ]; then
             /bin/calibrate
        fi
       
        if [ -e /etc/pointercal -a ! -s /etc/pointercal ] ; then
                rm /mnt/disk/pointercal
                /bin/calibrate
        fi
else
        echo "mouse..."
        export QWS_MOUSE_PROTO="MouseMan:/dev/mice"
        >/etc/pointercal
fi

export QTDIR=/opt/Qtopia
export QPEDIR=/opt/Qtopia
export PATH=$QTDIR/bin:$PATH
export QT_PLUGIN_PATH=$QTDIR/plugins:$QTDIR/qt_plugins/
export QT_QWS_FONTDIR=$QPEDIR/lib/fonts/
export LD_LIBRARY_PATH=$QTDIR/plugins/qtopialmigrate/:$QTDIR/qt_plugins/imageformats/:$QTDIR/lib:/usr/local/tslib/lib:$LD_LIBRARY_PATH

FB_SIZE=$(cat /sys/class/graphics/fb0/virtual_size)


#export QWS_DISPLAY="LinuxFb:mmWidth76:mmHeight44:1"
case "$FB_SIZE" in
800,480)
export QWS_DISPLAY="LinuxFb:mmWidth91:mmHeight53:1"
;;
480,272)
export QWS_DISPLAY="LinuxFb:mmWidth76:mmHeight44:1"
;;
*)
export QWS_DISPLAY="LinuxFb:mmWidth91:mmHeight53:1"
;;
esac


export HOME=/root/QtopiaHome

if [ ! -e $HOME ]; then mkdir -p $HOME; fi
if [ ! -e /usr/share ]; then mkdir /usr/share; fi
if [ ! -e $HOME/Settings/Trolltech/qpe.conf ]; then
    mkdir -p $HOME/Settings/Trolltech/
    cp $QPEDIR/etc/default/qpe.conf $HOME/Settings/Trolltech/qpe.conf -f
fi

export LANG="en_US"


#temp
if [ ! -e $HOME/Documents ]; then 
   mkdir -p $HOME/Documents; 
fi

# make link file for Documents of Qtopia
#if [ ! -h  $HOME/Documents/grassland.jpg -o  ! -h $HOME/Documents/panda.mpg  -o  ! -h $HOME/Documents/青花瓷.mp3 ]; then
#             ln -s  /root/QtopiaHome/Documents/grassland.jpg     $HOME/Documents
#             ln -s  /root/QtopiaHome/Documents/青花瓷.mp3         $HOME/Documents
#             ln -s  /root/QtopiaHome/Documents/panda.mpg         $HOME/Documents            
#fi
#
insmod /lib/modules/ok6410_leds.ko
#注意这里需要先加载led驱动模块,因为我编译linux的时候并没有把led驱动编译到内核里
exec $QPEDIR/bin/leds
启动开发板,进入系统后输入# leds & 即可看到led测试界面,点击上面的LED可以控制板上LED的亮灭。


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