eGalax touchscreen calibration

[Markamc]

(15th Aug, 2013 09:46 AM)ph87 Wrote:  After spending some loooong nights I got it working!!! I had succesfull calibrated the Touchscreen using your install.sh but...

Today I wanted to test it, but it doesn't work anymore... The Calibration Data have changed! How can the calib data change from one day to another?

data Yesterday: calib_x_d=1220;calib_x_fact=-0.8;calib_y_d=710;calib_y_fact=-0.8;swap_axes=0;
data Today: calib_x_d=1180;calib_x_fact=-0.12;calib_y_d=740;calib_y_fact=-0.1;swap_axes=0;

What does it depend on?

An other problem is, that I've got a 1280x720 screen but ts_calibtrate recognizes it as a 1440x900 so I can't use his data - I've to calibrate it for my own!!!

Hope you can help me...

That calib file is used with Andrei's patch and doesn't change automatically....must be edited manually.

The calibration file generated with ts_calib is stored in /etc/pointercal and is only used when you are using uimapper, change the conf file as in tutorial, and check all is ok with evtest. Set your resolution/overscan the same in /boot/config.txt as in xbmc.

It's all in the tutorial, it explains it's an alternative method, in order to give easy framebuffer calibration, BTN_RIGHT and single press select.