Linux/PROCESSOR-SDK-AM335X: touchscreen problem in Matrix

user4926528

Tool/software: Linux

I'm using the latest processor-sdk. The touchscreen can't work in the Matrix menu and my QT programe while the mouse can work. But when I run the example applications in Matrix, the touchscreen works well. I wonder how can I use touchscreen in the Matrix menu and my applications?

over 6 years ago

0 dzhou over 6 years ago

TI__Genius 9065 points

Hello Yan,

Due to the US holidays, on this particular E2E thread, our response may get delayed until the week of Jan 2, 2019.

While waiting for our experts coming back to office, I just want to point it out that on 12/23 we just release 5.2 SDK version, please try it.
e2e.ti.com/.../757988

Warmest Wishes for Happy Holidays and a Happy New Year!

best regards,
David Zhou

0 user4926528 over 6 years ago in reply to dzhou

Intellectual 450 points

dear zhou，
Thanks for you recommendation. I have updated my SDK to the latest version.
Have a nice holiday!

Yan

0 Manisha Agrawal over 6 years ago in reply to user4926528

TI__Mastermind 22946 points

Hi Yan,

Which HW board are you using - AM335x EVM? The touch screen will work only if there is a good Weston calibration including Matrix Gui. Please try touchscreen calibration procedure.

These links might be useful -

0 user4926528 over 6 years ago in reply to Manisha Agrawal

Intellectual 450 points

Dear MANISHA,
Thanks for your replay.
I have calibrated my am335x evm touchscreen, and it works in the example touch applications. But in the Matrix menu it still can't work. So I don;t know if it need other settings...

0 Manisha Agrawal over 6 years ago in reply to user4926528

TI__Mastermind 22946 points

Is the touch screen for Matrix GUI not working on out of the box Processor SDK Linux 5.2 on AM335x GP EVM?

0 user4926528 over 6 years ago in reply to Manisha Agrawal

Intellectual 450 points

Thanks for your advice before, I have solved my problem. My touchscreen is too sensitive that my celibration was always wrong. So I changed my parameters in the device tree and it finally work!

0 Manisha Agrawal over 6 years ago in reply to user4926528

TI__Mastermind 22946 points

Thanks for the update. Glad to know that you were able to resolve the problem.

Processors

Processors forum

Linux/PROCESSOR-SDK-AM335X: touchscreen problem in Matrix