Touchscreen input driver for Debian/Raspbian

Hello, do you all make the source code available for your 7" raspberry pi touchscreen? I and others are am having issues getting it to work with JavaFX. The driver work inside of X11 applications, but JavaFX is very light, and uses the devices directly, and I am getting this issue:

SEVERE: 746 udevInput.c:1596 lens_input_pointerEvents_handleSync: malformed multi touch event - ignoring

If I cannot solve this I will need to return the device.

-Pete.

0 clem57 over 9 years ago

You do not say what you are using but this may work as touch input: https://kivy.org/docs/contribute.html
Clem
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0 element14support over 9 years ago

Hello ziupe
Welcome to the element14 Community, we hope you enjoy it! I will move this over to the Raspberry Pi Accessories area as it is a better fit.

Thank you,

Jamie
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0 Former Member over 9 years ago in reply to element14support
[sorry if this double posts...]

Cleam,

Thanks for the quick response; my apologies for the lack of details. Here is what I am using:

Raspberry Pi 7” touch display packaged under the name “element14”
Raspberry Pi B running Raspbian Nov. 2015 with updates
Oracle Java 8u65, NetBeans, running the default "Hello World" JavaFX example app you get from creating a new JavaFX project.

I thought I would try to investigate why JavaFX is seeing the driver data as invalid, and perhaps change the driver to add an option to output in a fashion JavaFX can understand. Either that or switch to the OpenJDK and see if behavior is different. I am guessing the place to look is the default driver packaged with Raspbian/Debian? I found some interesting info on the below sites using cat on the /dev/input/. I will take a closer look:

https://www.raspberrypi.org/forums/viewtopic.php?f=108&t=121268
http://www.jensd.de/wordpress/?p=845

Also, thanks for the info at kivy, this might prove very handy if failing to find a solution to the issue.

-Pete.
(GMT -5)
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0 Former Member over 9 years ago in reply to Former Member
Looks like the way to go is OpenJFX:
https://www.linkedin.com/pulse/oracle-just-removed-javafx-support-arm-jan-snelders
https://www.raspberrypi.org/forums/viewtopic.php?f=81&t=97367&p=678791#p678791
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0 Former Member over 9 years ago in reply to clem57

Cleam,

Thanks for the quick response; my apologies for the lack of details. I will connect and move the thread to Paul Regan <http://www.element14.com/community/people/psr>. For the record, here is what I am using:

     Raspberry Pi 7” touch display packaged under the name “element14”
     Raspberry Pi B running Raspbian Nov. 2015 with updates
     Oracle Java 8u65, NetBeans, running the default "Hello World" JavaFX example app you get from creating a new JavaFX project.

I thought I would try to investigate why JavaFX is seeing the driver data as invalid, and perhaps change the driver to add an option to output in a fashion JavaFX can understand. Either that or switch to the OpenJDK and see if behavior is different. I am guessing the place to look is the default driver packaged with Raspbian/Debian? I found some interesting info on the below sites using cat on the /dev/input/. I will take a closer look:

     https://www.raspberrypi.org/forums/viewtopic.php?f=108&t=121268 <https://www.raspberrypi.org/forums/viewtopic.php?f=108&t=121268>
     http://www.jensd.de/wordpress/?p=845 <http://www.jensd.de/wordpress/?p=845>

Also, thanks for the info at kivy, this might prove very handy if failing to find a solution to the issue.

-Pete.
(GMT -5)
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