[Resolved]PiScreen RaspberriPi2 Touchscreen Calibration

[jawood]

Hi I have downloaded and installed the pi screen image https://ozzmaker.com/piscreen/PiScreenImage-SDCard-1.8.zip and after doing the apt-get update and apt-get upgrade the calibration of the touchscreen is out. I have tried deleting calibration data and re-calibrating but get same result touching the top left of screen I see cursor, touching anywhere else I don’t see the cursor.
I tried doing the sudo TSLIB_FBDEVICE=/dev/fb1 TSLIB_TSDEVICE=/dev/input/event3 ts_calibrate but still same result. Tried adding rotate=90 in boot/config.txt and re-calibrating still same result.
Any ideas would be appreciated.

[jawood]

So I did a fresh install of above image
Did raspi-config and expanded file system, changed time timezone keyboard layout, reboot.
raspi-config and changed host name, update raspi-config, reboot.
rpi-update after reboot touchscreen is not calibrated correctly only a little out of alignment.
Run touch screen calibration from preferences menu.
now touch screen is way out will only see cursor if touch far left side of screen.

[jawood]

after above I did apt-get update, apt-get upgrade reboot
After reboot touch screen is out of calibration still but only a little bit as before.
Ran sudo rm /etc/pointercal.xinput reboot
calibration wizard runs on boot when tapping screen on last tap get miss tap detected restarting does this 3 times then goes to desktop and calibration is out completely again only see cursor if tap far left side of screen.

[jawood]

Images of how touch screen responds

Attachments:

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   2015-05-12-22-34-33.616.jpg
   

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   2015-05-12-22-34-40.196.jpg
   

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   2015-05-12-22-34-44.907.jpg
   

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   2015-05-12-22-34-48.281.jpg
   

5. 

   2015-05-12-22-34-51.678.jpg
   

[Mark Williams]

I think that running calibration from the preference menu within X may be breaking it for you.

Rather than images, are you able to upload a small video?

And.. maybe you can make a backup of your SD Card, compress it and upload it somewhere so I can have look.

Mark --OzzMaker.com --

[jawood]

attached is a short video of touch screen behaviour.

Attachments:

1. 2015-05-13-08-57-42.243.wmv

[Mark Williams]

thanks for that… I see what is happening now… your X and Y axis are swapped.

look in /etc/X11/xinit/xinitrc and see if you have any lines similar to below;

DISPLAY=:0 xinput --set-prop 'ADS7846 Touchscreen' 'Evdev Axes Swap' 1
DISPLAY=:0 xinput --set-prop 'ADS7846 Touchscreen' 'Evdev Axis Inversion' 1 1

if you do, delete the lines.. and delete /etc/pointercal.xinput and then reboot.

dont rung xinput from the preference menu as i think it breaks the calibration.

Mark --OzzMaker.com --

[jawood]

Thankyou kindly good sir the touch screen is all good now.

Now just have to get me BerryIMU all working.

[Author]

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