eGalax touchscreen calibration
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7th Jun, 2013, 02:36 AM
Post: #76
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RE: eGalax touchscreen calibration
Correct
Code: calib_x_d=1280;calib_x_fact= -0.66667;calib_y_d=720;calib_y_fact=-0.666667;swap_axes=1; XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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7th Jun, 2013, 03:47 AM
Post: #77
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RE: eGalax touchscreen calibration
Ok, so you cannot see the pointer when using the touchscreen, and it has no effect on the reported pointer value when touching the screen.
So at max x-pos., the equation gives: 1280 - (-0.666 * 1280) - 1280 = 852.48 and at min x-pos, , the equation gives: 1280 - (-0.666 * 0) - 1280 = 0 can you find the corresponding evtest values for top left and bot right, it might help |
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7th Jun, 2013, 05:20 PM
Post: #78
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RE: eGalax touchscreen calibration
(7th Jun, 2013 03:47 AM)Markamc Wrote: Ok, so you cannot see the pointer when using the touchscreen, and it has no effect on the reported pointer value when touching the screen.With current config i see the pointer in xbmc, but its only moving in the wrong direction. XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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7th Jun, 2013, 06:37 PM
Post: #79
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RE: eGalax touchscreen calibration
Ok, by changing the sign of the scale factor will reverse the direction of the axis, try it in a spread sheet.
max x = 1280 -(0.666 * 1280) - 1280 = -852.48 minx x = 0 -(0.666 * 1280) - 0 = 0 so, range is 0 < x < -852.2, which is the opposite of the other range result, 0 < x < 852.4 Not sure why you can't see any difference? check the syntax of the calib file for errors maybe? |
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8th Jun, 2013, 09:49 PM
Post: #80
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RE: eGalax touchscreen calibration
Without the - sign where ever i touch, the mouse jumps to 1280,720.
Quote:The simplest way to swap axes is to switch the four wires cable plug's orientation which comes from the touchscreen to the touch controller.Maybe i can do this? Do i need to swap this cable? looks a lot like the one coming from the touchscreen in the blog post. XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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10th Jun, 2013, 08:51 PM
Post: #81
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RE: eGalax touchscreen calibration
I swapped the cable and now its working!
Now only thing left to do is the calibration. But its driving me crazy, the formula mentioned in the blog isn't accurate. Is there another way to find those values? XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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11th Jun, 2013, 01:54 PM
Post: #82
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RE: eGalax touchscreen calibration
(##Disclaimer .....works with 1a5 and beta1 for me)
Ok, this is a long process atm, but does work, for me at least. I was originally looking into changing the xbmc patch, but not had the time yet. Method : TS_CALIBRATE Enter the following, line by line and obviously follow the instructions: Terminal sudo su stop xbmc apt-get install libtool automake build-essential git git clone git://github.com/kergoth/tslib.git cd tslib ./autogen.sh ./configure make make install edit the ts.conf file and remove the '# ' from '# module-raw input' on line:2 using: Terminal nano /usr/local/etc/ts.conf Close and save the ts.conf file Next enter the following at the prompt...... Terminal ls -l /dev/input/by-id The output shows the input event that your touchscreen is linked to, My egalax TS is on /dev/input/event2 Terminal root@xbian:/home/xbian/tslib# ls -l /dev/input/by-id total 0 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-Riitek_Micro_Keyboard-event-kbd -> ../event0 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-Riitek_Micro_Keyboard-event-mouse -> ../event1 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-Riitek_Micro_Keyboard-if01-event-mouse -> ../event1 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-Riitek_Micro_Keyboard-if01-mouse -> ../mouse0 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-Riitek_Micro_Keyboard-mouse -> ../mouse0 lrwxrwxrwx 1 root root 9 Jan 1 1970 usb-eGalax_Inc._Touch-event-if00 -> ../event2 root@xbian:/home/xbian/tslib# Paste the following lines at the prompt...... *** NB. change export TSLIB_TSDEVICE=/dev/input/eventX to suit your device event no. where 'X' is your value. Terminal export LD_LIBRARY_PATH=/usr/local/lib export TSLIB_CONSOLEDEVICE=none export TSLIB_FBDEVICE=/dev/fb0 export TSLIB_TSDEVICE=/dev/input/event2 <----*** export TSLIB_CALIBFILE=/etc/pointercal export TSLIB_CONFFILE=/usr/local/etc/ts.conf export TSLIB_PLUGINDIR=/usr/local/lib/ts and then Terminal ts_calibrate Terminal root@xbian:/home/xbian/tslib# ts_calibrate xres = 1280, yres = 720 Took 16 samples... Top left : X = 317 Y = 108 Took 34 samples... Top right : X = 324 Y = 1937 Took 16 samples... Bot right : X = 1863 Y = 1933 Took 19 samples... Bot left : X = 1856 Y = 113 Took 11 samples... Center : X = 1067 Y = 1028 -21.938232 -0.000184 0.646745 -75.615356 0.402788 -0.001534 Calibration constants: -1437744 -12 42385 -4955528 26397 -100 65536 root@xbian:/home/xbian/tslib# The information you want is from the end of the output Terminal Center : X = 1067 Y = 1028 -21.938232 -0.000184 0.646745 -75.615356 0.402788 -0.001534 Top line is X, bottom Y x offest is -21.938232 , x scale factor is 0.646745 y offest is -75.615356 , y scale factor is 0.402788 so for our calib file we need this: Code: calib_x_d=1302;calib_x_fact=-0.647;calib_y_d=796;calib_y_fact=-0.402;swap_axes=1; Create the calib file and enter the above calibration into the editor with: Terminal mkdir /usr/share/eGalaxCalibration nano /usr/share/eGalaxCalibration/touchscreen_axes_calib As you can see, I needed to change the direction of both axes by changing the sign on the scale factor and I also needed to swap the axes too, swap_axes=1. ThHe offset values need to be "subtracted" from those already "programmed" into xbmc patch, hence (1280 -) -22 = 1302 (approx) and (720 -) -76 = 796 Hope it helps bye y'all (##Disclaimer .....works with 1a5 and beta1 for me) |
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11th Jun, 2013, 05:30 PM
Post: #83
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RE: eGalax touchscreen calibration
Works almost here...
Terminal make[1]: Leaving directory `/home/xbian/tslib' root@xbian:/home/xbian/tslib# nano /usr/local/etc/ts.conf root@xbian:/home/xbian/tslib# export LD_LIBRARY_PATH=/usr/local/lib root@xbian:/home/xbian/tslib# export TSLIB_CONSOLEDEVICE=none root@xbian:/home/xbian/tslib# export TSLIB_FBDEVICE=/dev/fb0 root@xbian:/home/xbian/tslib# export TSLIB_TSDEVICE=/dev/input/event2 root@xbian:/home/xbian/tslib# export TSLIB_CALIBFILE=/etc/pointercal root@xbian:/home/xbian/tslib# export TSLIB_CONFFILE=/usr/local/etc/ts.conf root@xbian:/home/xbian/tslib# export TSLIB_PLUGINDIR=/usr/local/lib/ts root@xbian:/home/xbian/tslib# ts_calibrate ts_open: No such file or directory And if i run it directly (on pi not ssh): ts_calibrate: error while loading shared libraries: libts-1.9.so.0: cannot open shared object file: No Such file or directory XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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11th Jun, 2013, 07:49 PM
Post: #84
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RE: eGalax touchscreen calibration
Sorry my fault, just edited post above,
Change the line export TSLIB_TSDEVICE=/dev/input/event2 to suit your event device I'll have a look later, I had that error at some point, and manage to fix it Think it will work SSH, if you set the paths, if you run it locally, you need to set paths too. |
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11th Jun, 2013, 10:06 PM
Post: #85
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RE: eGalax touchscreen calibration
Terminal xbian@xbian /dev/input $ ls by-id by-path event0 event1 mice mouse0 mouse1 ts_calibrate: error while loading shared libraries: libts-1.0.so.0: cannot open shared object file: No such file or directory do i have to paste the export things in the file or execute them? Because i executed them. XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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11th Jun, 2013, 11:14 PM
Post: #86
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RE: eGalax touchscreen calibration
you can paste them for now, it's fine
I'll check later, I thought I'd prevented this error: ts_calibrate: error while loading shared libraries: libts-1.0.so.0: cannot open shared object file: No such file or directory Just tested on mine, if I set the path export LD_LIBRARY_PATH= then i get the error when I set it as export LD_LIBRARY_PATH=/usr/local/lib Entering, find / -name libts-1.0.so.0 the file is located in /usr/local/lib I have no error, I am testing on beta1, i will check a5 |
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11th Jun, 2013, 11:40 PM
Post: #87
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RE: eGalax touchscreen calibration
Entering the lines in the file does not work, same error.
xbian@xbian / $ sudo find / -name libts-1.0.so.0 /usr/local/lib/libts-1.0.so.0 So it does exists :/ Also on Beta 1 here XBian Skin Beta Testing Clock Screensaver If you liked my help, click on "Thanks" to show your appreciation. |
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12th Jun, 2013, 12:03 AM
Post: #88
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RE: eGalax touchscreen calibration
Ok, will test later and update instructions if I find a problem....and be a bit clearer with the instructions, for now just paste the "export path=" section to prompt, not into the ts.conf file.
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12th Jun, 2013, 04:40 AM
Post: #89
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RE: eGalax touchscreen calibration
Will try again with a fresh beta 1 image.
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12th Jun, 2013, 04:42 AM
Post: #90
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RE: eGalax touchscreen calibration
I've modified the instructions slightly to avoid confusion and then tried it out on a fresh beta1 installation with no errors.
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