[Angstrom-devel] at91sam9263-ek touchscreen

[Maxim Podbereznyi]

Hi Koen!

Is it possible that the problem appears because of 800x480 resolution since
it is not supported by xserver-kdrive? I am not sure that simple averaging
can help. I think the problem is somewhere deeper

Regards,
Max

2010/2/10 Koen Kooi <k.kooi at student.utwente.nl>

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> On 10-02-10 12:18, Maxim Podbereznyi wrote:
> > Hi guys!
> >
> > I have own board based on AT91SAM9263-EK design and connect 7" LCD with
> > touchscreen. The LCD resolution is 800x480px. When Angstrom starts it
> asks
> > me to calibrate the TS, I do it. Then I can't point to anything on the
> > screen because the cursor shivers when I press and I can't put in a right
> > position.
> >
> > I want to fix this issue but don't know where exactly I should be looking
> > for. Is it in tslib or 7843 driver?
>
> The answer to that is a bit complicated :) The kernel people say that
> any postprocessing should be done in userspace (in your case sample
> averaging and binning) and userspace people say that's too slow and
> wastefull.
>
> Try using some tslib filters in tslib.conf first to see if that helps,
> and when that is too slow try hacking the kernel driver.
>
> regards,
>
> Koen
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