Qtopia 2.2.0在OK6410平臺的移植（四）LED測試

1.設置LED測試程序的UI界面

複製上篇文章說做的Helloworld.ui,改名leds.ui並修改其caption爲My leds,同時刪除掉原來界面上所有的控件。

點擊check Box，在窗體上放置4個check Box控件，其name屬性爲m_ledx(x=1,2,3,4),caption爲LEDx(x=1,2,3,4)。保存後退出。

2.編寫代碼，還是需要3個文件：main.cpp, main_form.cpp, main_form.h

main.cpp

#include "main_form.h"
#include <qtopia/qpeapplication.h>
QTOPIA_ADD_APPLICATION("leds",TMainForm)
QTOPIA_MAIN

main_form.cpp

#include "main_form.h"
//#include <qlineedit.h>
#include <qcheckbox.h>
#include <unistd.h> 
#include <stdlib.h> 
#include <sys/types.h>
#include <sys/stat.h> 
#include <sys/ioctl.h>
#include <fcntl.h> 

TMainForm::TMainForm(QWidget * parent, const char * name, WFlags f) 
    : TMainFormBase(parent, name, f) 
{ 
    //::system("insmod /lib/modules/ok6410_leds.ko");
    //因爲我的LED驅動是做成模塊，所以需要先加載模塊，
   //但在此處加載後點擊QT界面卻沒法控制板上的LED亮滅，
   //據說是system這個方法會導致阻塞？？希望您能幫我解答！
   //所以我把led模塊的加載放到了啓動led的腳本上了
    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");//這裏移除掉led模塊
} 

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 <qsocketnotifier.h>
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.還需要一個leds.pro文件，內容如下：

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

4.編寫交叉編譯的腳本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

運行buildarm.sh生成leds的可執行文件，拷貝到開發板根目錄下/opt/Qtopia/bin目錄下

5.編寫啓動led測試程序的腳本，放在開發板根目錄下/bin/裏面

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
#注意這裏需要先加載led驅動模塊，因爲我編譯linux的時候並沒有把led驅動編譯到內核裏
exec $QPEDIR/bin/leds

啓動開發板，進入系統後輸入# leds & 即可看到led測試界面，點擊上面的LED可以控制板上LED的亮滅。

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