Re: Problem in Touch co-ordinates accuracy

Hi All,

Hope i have explained well about my present problem in the above
post...

Is there any mistake in my TSC2005 configuration?

am in crucial position as am running out of dead line in my project

Can you please let me know that where could be the problem?


Thanks in advance

-senthil

senthil...@xxxxxxxxx wrote:
Hi All,

Thanks for ur reply...
Am just getting only one co-ordinates per touch interrupt.

Let me explain my TSC2005 configuration in brief

1.once we touched the screen,controller takes x & y-cordinates and
does the conversion and updates X and Y data register then it gives
"interrupt"
2.after got the interrupt i will read the X and Y data register.
3.and i have configured TSC2005 for Preprocessing - Median Value
Filter and Averaging Value Filter (i.e i hope controller itself
averaging the samples)

I have tried as you suggested...If i read the co-ordinates more than
once after i got the interrupt am getting the same data from X and Y
data register....


can you please tell me where am doing the mistake?Is there any mistake
in my controller configuration?

If you people dont mind,if anybody worked on TSC2005,Can you please
share your TSC2005 configuration?so that i can able to cross check
with my configuration...


Regards

-Senthil



Bruce Eitman [eMVP] wrote:
Touch drivers can be a challenge. It isn't necessarily enough to just read
the data from the controller, you may need to average several samples to
minimize jitter.

--
Bruce Eitman (eMVP)
Senior Engineer
beitman AT applieddata DOT net

Applied Data Systems
www.applieddata.net
An ISO 9001:2000 Registered Company
Microsoft WEP Gold-level Member

<senthilv2k@xxxxxxxxx> wrote in message
news:e5f884bd-350a-4ae3-a821-8e775be2f2a2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi All,

Thanks for your reply...
Presently my setting is "MaxCalError"=dword:16

If i increase MaxCalError to 20...it finish the calibration in max of
3 times but after that my touch opertion is not fine(i.e if i am
clicking on the any icon it wont do the operation instead i need to
touch near by that icon then it works)...

Hope i have explained properly...


-senthil


Luca Calligaris wrote:
in the registry settings for your touch screen you should have a dword
entry
called 'MaxCalError'.
That value controls the sensitivity of the function which provides
information on the accuracy of the touch screen calibration.
Try to increase that setting

--

Luca Calligaris
www.eurotech.it

<senthilv2k@xxxxxxxxx> ha scritto nel messaggio
news:1f349229-b059-49f0-8e4e-87faed6c6d87@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello All,

Am working on touch driver in windows mobile 6.0
Am using TSC2005 controller.

My touch driver is working fine with pre calibrated value...
My problem while doing the calibration...

it is keep on asking to touch for the calibration....may be after 25
times only it is coming out the calibration window...afterthat i can
able to see the changes in registery editor(i.e remote registry
editor)

I felt that touch co-ordinates are not accuracy(i.e i touching the
same point more than 10 times to see the RAW data...it is not given
near by value...first time 34b,2c7 next time in the same point 323,2e5
like that...)

so i have done the x-axis,y-axis driver test which is available in
TSC2005.Both the test got FAILED (i.e x-axis and Y-axis of the touch
panel poorly connectd to respetive drivers)

my question is How the touch screen is working fine with the pre
calibrated value even though x-axis,y-axis driver got failed...

Is anything mistake in my side or touch screen gives the co-ordinates
even though x-axis,y-axis are not properly connected to respective
drivers?

I have done the above test with more than 5 touch panel for the
confirmation...
Is it problem in my touch panel?

please let me know how should over come from this problem??

Thanks in advance

-senthil



.

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