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Wandboard Elo Touchscreen resolution and calibration

Question asked by pedropl on Nov 29, 2014
Latest reply on Dec 6, 2014 by pedropl

Hello!

 

I'm quite new to ARM developemnt and I've run into some issues concerned with the Elo 1519L touchscreen.

 

The board is Wandboard Quad. Kernel version is 3.10.17, I have successfully compiled and loaded the driver found on the Elo website.

 

The screen is conneceted via HDMI-DSub converter. I hope it's not the source of problems. The screen runs in default on 1280x720 mode. How can i change it into 1366x768? I've tried changing the modes in drivers/video/mxc/mxc_edid.c and changing the kernel command line in U-Boot but got only worse - "no signal detected".

 

What's more the default 1280x720 resolution is not a nightmare, unless the touch would work properly. The touch cant cover the whole display image. How can I perform calibration? Is there some layer that I can add to the image or something?

 

Thanks in advance,

Pedro

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