arm版qt opencv程序自启动 触摸屏可以用但不能初始化摄像头

我用qt opencv在开发板实现帧间差分法的时候 ,设置程序自启动,触摸屏可以用但是摄像头初始化一直不能识别

搞了好久发现了错误

现在记录下来

自启动首先

1 在/bin cp  qt4  setqt4env 将最后的路径与执行文件改为自己的路径与执行文件名

保存退出

2

修改/etc/.init.d/rcS

#vi /etc/init.d/rcS

把文件中/bin/qtopia & 改成/bin/setqt4env &

这个时候是可以自启动的但是摄像头没有用

打开setqt4env文件对比下开始的那个qtopia文件找到不同 一一修改就好了。这里我复制下原来的setqt4env和修改后的

3.修改前

#!/bin/sh

if [ -e /etc/friendlyarm-ts-input.conf ] ; then
        . /etc/friendlyarm-ts-input.conf
fi
true    ${TSLIB_TSDEVICE:=/dev/touchscreen}

TSLIB_CONFFILE=/etc/ts.conf

export TSLIB_TSDEVICE
export TSLIB_CONFFILE

export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_CALIBFILE=/etc/pointercal

export QWS_DISPLAY=:1
export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
export PATH=/bin:/sbin:/usr/bin/:/usr/sbin:/usr/local/bin

if [ -c ${TSLIB_TSDEVICE} ]; then
        export QWS_MOUSE_PROTO="Tslib MouseMan:/dev/input/mice"
        if [ ! -s /etc/pointercal ] ; then
                rm /etc/pointercal
                /usr/bin/ts_calibrate
        fi
else
        export QWS_MOUSE_PROTO="MouseMan:/dev/input/mice"
fi

export QWS_KEYBOARD=TTY:/dev/tty1

export HOME=/root

cd /usr/local/Trolltech/QtEmbedded-4.7.0-arm/demos/embedded/fluidlauncher
./fluidlauncher -qws
hotplug
~~
4 修改后

#!/bin/sh

if [ -e /etc/friendlyarm-ts-input.conf ] ; then
        . /etc/friendlyarm-ts-input.conf
fi
true    ${TSLIB_TSDEVICE:=/dev/touchscreen}

TSLIB_CONFFILE=/etc/ts.conf

export TSLIB_TSDEVICE
export TSLIB_CONFFILE
export CAMERA_DEVICE=/dev/video2
export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_CALIBFILE=/etc/pointercal

export QTDIR=/opt/Qtopia
export QPEDIR=/opt/Qtopia

export QWS_DISPLAY=:1
export LD_LIBRARY_PATH=$QTDIR/lib:/usr/local/lib:$LD_LIBRARY_PATH
export PATH=$QTDIR/bin:/bin:/sbin:/usr/bin/:/usr/sbin:/usr/local/bin

if [ -c ${TSLIB_TSDEVICE} ]; then
        export QWS_MOUSE_PROTO="Tslib MouseMan:/dev/input/mice"
        if [ ! -s /etc/pointercal ] ; then
                rm /etc/pointercal
                /usr/bin/ts_calibrate
        fi
else
        export QWS_MOUSE_PROTO="MouseMan:/dev/input/mice"
fi

export QWS_KEYBOARD=TTY:/dev/tty1

export HOME=/root

cd /home/plg/
./yundong -qws
hotplug
~

5 你会发现添加了不少东西,特别是

export CAMERA_DEVICE=/dev/video2
。重启就可以使用触摸屏并且有摄像头初始化

 

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