tslib Error & Solution

Task: Build Qt 4.7.1 for board armsys-6410.

Toolchain: supplier provided toolchain (4.2.2-eabi-arm)

Error: When start a Qt example, the following error message show

QWSTslibMouseHandlerPrivate: ts_config() failed with error: 'No such file or directory'

Please check your tslib installation!

The problem is solved by following:

Download & build the latest tslib again from http://tslib.berlios.de/

> tar xzvf tslib-1.4.gz
> cd tslib
>./autogen.sh
>./configure -host=arm-linux -prefix=/usr/local/tslib

>make
>make install

Qt was successfully build with the toolchain:

./configure -prefix /usr/local/qt-4.7.1-armsys-6410 -embedded arm -xplatform qws/linux-arm-g++ -depths 16 -qt-mouse-tslib -I/usr/local/tslib/include -L/usr/local/tslib/lib -R /usr/local/tslib/lib -xmlpatterns -exceptions

make
make install

Copy the installed Qt into root file system, which will be nfs mounted by board

sudo cp -rf /usr/local/qt-4.7.1-armsys-6410 /home/max/work/arena/rootf/armsys6410/root/usr/local/

Start the board by nfs mounting  /home/max/work/arena/rootf/armsys6410/root/
I use minicom here, the parameters are

setenv bootargs "root=/dev/nfs nfsroot=192.168.2.118:/home/max/work/arena/rootf/armsys6410/root/ ip=192.168.2.10:192.168.2.118:192.168.2.1:255.255.255.0:armsys.hzlitai.com:eth0:off console=ttySAC0,115200" 

Check the device file of touchscreen. Assume the device of board is /dev/input/event1

cat /dev/input/event1| hexdump

Now when you move the mouse in the touchscreen, the similar texts will be displayed on the console. It means that /dev/input/event1 is the correct device file of touchscreen on board.

...

0000300 7cc6 3a50 bb73 000b 0003 0001 1f94 0000                                

0000310 7cc6 3a50 bb7d 000b 0000 0000 0000 0000                                
0000320 7cc6 3a50 cee6 000b 0003 0000 0fbb 0000                                
0000330 7cc6 3a50 cefa 000b 0003 0001 1fff 0000                                
0000340 7cc6 3a50 cf03 000b 0000 0000 0000 0000                                
0000350 7cc6 3a50 e269 000b 0001 014a 0000 0000                                
0000360 7cc6 3a50 e27c 000b 0003 0018 0000 0000                                
0000370 7cc6 3a50 e281 000b 0000 0000 0000 0000
....

Add following enviromental variables into /etc/profile

export TSLIB_ROOT=/usr/local/tslib
export TSLIB_TSDEVICE=/dev/input/event1
export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf
export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts
export TSLIB_CALIBFILE=/etc/pointercal
export TSTS_INFO_FILE=/sys/devices/virtual/input/input0/uevent
export QWS_MOUSE_PROTO=tslib:/dev/input/event1
export QWS_KEYBOARD=TTY:/dev/tty1
export HOME=/root
export QTDIR=/usr/local/qt-4.7.1-armsys-6410
export QPEDIR=/usr/local/qt-4.7.1-armsys-6410
export PATH=$PATH:/usr/local/tslib/lib:$QTDIR/bin
export LD_LIBRARY_PATH=$QTDIR/lib:/usr/local/tslib/lib:/usr/local/lib:$LD_LIBRARY_PATH






Run calibration again.

/usr/local/tslib/bin/ts_calibrate

Try a Qt example,

/usr/local/qt-4.7.1-armsys-6410/examples/widgets/calculator/calculator -qws

The error messages didn't show again.

References

Nice man doc of tslib
http://www.blogger.com/post-edit.g?blogID=5974839100591333846&postID=6336916594199395808

About QWS_MOUSE_PROTO
http://doc.qt.nokia.com/4.7-snapshot/qt-embedded-pointer.html

homepage of tslib
http://tslib.berlios.de/

minicom nfs copy kernel to board
http://www.armsystem.com.cn/bbs/redirect.php?fid=29&tid=12260&goto=nextnewset

http://www.qtcentre.org/threads/23353-Qt-Embedded-4.5-TsLib-and-TSC-10-touch-screen-(Solved)