nanogui: Microwindows, Touch Screen & calibration
Subject:
Re: Microwindows, Touch Screen & calibration
From:
brad ####@####.####
Date:
8 Sep 2000 18:09:06 -0000
Message-Id: <Pine.LNX.4.10.10009081409070.4388-100000@localhost.localdomain>
tpcal produces transformation coefficients for mou_tp. mou_tp uses the
coefficients to transform raw touch panel data to (x,y) screen data. This
has nothing to do with ts_ioctls.
Regards,
Brad
On Thu, 7 Sep 2000, S A McConnell wrote:
> Greg Haerr wrote:
>
> > There's a working touch panel calibrator for the linux-vr
> > style touch screen driver in the Microwindows source that
> > Brad LaRonde wrote. It's GPL, so it's in
> > microwin/src/contrib/GPL/tpcal
>
> Ok I have done that cross compiled it and stuffed it into my RAM Disk.
>
> When I run tpcal it hands back seven parameters. With the MIPS code
> those values
> were placed into /etc/pointercal. Which mou_tp.c would read and use to
> adjust the
> values being returned from the touch screen device. (calibration occured
> on the application side.)
>
> I notice that the ts_ioctl supports seven commands. So do those seven
> values represent (raw_max_x, raw_max_y, res_x, res_y, raw_min_x,
> raw_min_y, xyswp)?
>
> Not knowing what they are I do not know what to do with them. Nor can I
> tell if the values I am getting are reasonable.
> tpcal results: (-273605, -633, 174383829, -700, 278166, -4003337, 65536)
>
>
> Should I send them to ts_ioctl cmd's 3-12?
>
> Thanks,
> Scott
>
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