Automon

Installing TSLib and Calibrating it

From previous blogs, I successfully cross-compiled TSLib. It installed it in /usr/local/linux-arm. So on my board I created a similar path. Since I am doing a secure copy up, I need to give /usr/local/linux-arm a new owner (eclipse).

$ mkdir /usr/local/linux-arm
$ chown -R eclipse:eclipse /usr/local/linux-arm

In VMWare:
$ cd /usr/local
$ scp -r linux-arm/ eclipse@192.168.0.50:/usr/local/

Now TSLib requires environment variables set up. Edit /root/.bashrc and add these lines:

export TSLIB_TSEVENTTYPE=H3600
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_TSDEVICE=/dev/input/event0
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/usr/local/linux-arm/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/local/linux-arm/lib/ts

Do a switch user to load these
$ su

Now open /usr/local/linux-arm/etc/ts.conf file and delete all lines and add this:

module_raw input
module pthres pmin=1
module variance delta=30
module dejitter delta=100
module linear

(Make sure that there are no empty lines above or below)

Now to calibrate the device navgiate to the bin directory and run the program. It will display on screen points to tip. Once it is calibrated it will create a file /etc/pointercal. Don’t touch this file. If it fails to create it, ensure neccessary permissions on /etc to allow it. DO NOT CREATE a blank file before hand or you will get a segmentation fault.

$ cd /usr/local/linux-arm/bin
$ ./ts_calibrate

And that is all to installing and configuring TSLib.