Re: [Qemu-devel] [PATCH] Elo touchpad 10 bytes emulator

[Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>]

Hello Paul

Hmmm, you are right, it should be part of the calibration (userland).
As Dmtry says, the output from the chip should be from 96-4000. I have
fixed the max values to that.

The previous code was done to emulate an old privative app that uses
an elo touchscreen. I managed to reverse engineer the code and found
the 10 bytes protocol it was using. It also uses a privative library
to talk with the touchscreen.

Digging in the kernel, I found more of the protocol specification, and
digging a little bit more in the internet I have found even more
information.

Please take a look to the last patch and tell me what do you think



       Best regards and thanks for your comments.

On Mon, Mar 29, 2010 at 17:57, Paul Brook <paul@codesourcery.com> wrote:
>> New char device emulating an Elo serial touchpad.
>>
>> TODO: The output of the touchpad should be in the range of the
>> resolution. But I don't know a clean way to get the screen resolution.
>> Any help will be very wellcomed
>
> Are you sure? I don't see how real hardware would be able to do that.
>
> Paul
>



-- 
Ricardo Ribalda
http://www.eps.uam.es/~rribalda/