nanogui: Assabet (SA-1110) touchscreen doesn't work!
Subject:
Re: Assabet (SA-1110) touchscreen doesn't work!
From:
Supriyo ####@####.####
Date:
12 Jan 2001 12:32:30 -0000
Message-Id: <20010112123623.28142.qmail@web4406.mail.yahoo.com>
Great news for all those trying to get their
touchscreens to work on the Assabet!
With some help from Roman Jordan (from the
handhelds.org mailing list, I think) my touchscreen is
finally working! Well I wouldn't say it's perfect but
it sure is close!
It's quite a minor change actually.
1. Open the file drivers/char/ucb1200_ts.c
2. You'll find x_rev = 0 (If I remember correctly it's
in line 190...just search for it in case I'm wrong)
3. Change x_rev AND y_rev both to 1.
4. Recompile the kernel...and enjoy the Microwindows
minesweeper game!
Ok...now to point out some of the minor hiccups.
1. The area close around the centre of the screen
works perfectly.
2. However, if you press a point close to the left and
right edges of the touchscreen (I'm referring to the
landscape format), the point activated is around 0.5cm
away (towards the centre of the screen) from the point
where the pressure is applied.
Hope all this is useful for those trying to get their
Assabet touchscreens running.
Have fun!
Supriyo
--- Supriyo Chatterjea
####@####.#### wrote: > Ok...looks
like I'm in the same boat as some of the
> other people in this mailing list!
>
> I've managed to get the Assabet touchscreen to work
> but there's one problem (as usual!!). The screen
> doesn't seem to be calibrated.
>
> I've noticed that when I press say the top left hand
> corner of the screen, the bottom right hand corner
> is
> activated instead. So it's 180 degrees off where it
> should be.
>
> Here are some details which I think might be
> important:
> (Hopefully this will come in handy, Greg. :) )
>
> 1. Kernel version:
> - linux-2.4.0-test11
>
> 2. Also used the following patches:
> - patch-2.4.0-test11-rmk1
> - diff-2.4.0-test11-rmk1-np3
>
> 3. Settings in the Microwindows config file:
>
> IPAQMOUSE = Y
> All the rest = N
>
> So that would mean that I was using mou_ipaq.c
> driver
> (found in microwin/src/drivers/). After "make" the
> mou_ipaq.o file was created.
>
> 4. Major/minor #s
> mknod /dev/h3600_ts c 11 0
> (Major/minor #s were not mentioned in the mou_ipaq.c
> file. An earlier posting mentioned 11 & 0 but then
> again that was for the ADS driver...but I just tried
> my luck!)
>
>
> - Could someone please tell me how I could calibrate
> the screen? I mean do I need to modify some part of
> mou_ipaq.c so that I can rotate the activated points
> by 180 degrees?
>
> - Some people here have mentioned getting the ADS
> driver to work on the Assabet. I tried with the
> following settings but encountered errors:
>
> 1. Same kernel configuration as above.
>
> 2. ADSMOUSE = Y
> All the rest = N
>
> 3. Used the following driver found in
> microwin/src/drivers:
> mou_ads.c
>
> 4. . Major/minor #s
> mknod /dev/ts c 190 34
> (Got 190 and 34 from the mou_ads.c file.)
>
> This is the error message I got when I tried running
> the Microwindows "mine" demo:
>
> Error 19 opening touch panel
> Cannot initialise mouse.
>
> Also, cat /dev/ts gave me the following error
> message:
> No such device
>
> - Does the ADS driver REALLY work on the Assabet?
> From
> what I see it seems that it doesn't! But everyone
> here
> keeps on mentioning the ADS driver. So what am I
> missing out??
>
> I'm keen on trying out the ADS driver cause I'm
> hoping
> that it might work properly and I wouldn't have to
> calibrate the screen.
>
> Thanks,
> Supriyo
>
>
>
> --- Greg Haerr ####@####.#### wrote: > Well,
> since
> nobody can ever remember all this, I
> > have previously
> > fixed this. When you're wondering about what the
> > heck the
> > device driver number is for any
> > Microwindows-supported touch
> > screen, first, set the config file e.g.
> XXXMOUSE=Y,
> > then
> > goto the driver file src/drivers/mou_xxx.c, in
> this
> > case mou_ads.c,
> > and you will see that I have documented both the
> > driver hardware
> > board that is supported, the /dev/xxx driver name,
> > AND the
> > major/minor number, which in this case is 190,34.
> >
> > BTW, PLEASE when someone gets the Assabet touch
> > screen driver
> > working (I know someone has, but I don't have a
> > board), then
> > send me the driver used and kernel version number,
> > and I'll make
> > sure that the information makes it into one of the
> > mou_xxx.c
> > touch screen driver files so that we don't all
> > wonder about this
> > every month!
> >
> > If we don't back-contribute our accomplishments,
> > then the project
> > moves along more slowly, and we duplicate each
> > other's efforts ;-)
> >
> > Regards,
> >
> > Greg
> >
> > : As always, the best way is to read the source
> code
> > for the driver. That
> > : way you can be sure that you are completely up
> to
> > date (it shouldn't
> > : change from version to version, but it doesn't
> > hurt to make sure).
> > :
> > : Of course, there are those crazy people who will
> > say that you should
> > : read the product documentation, but those people
> > obviously haven't had
> > : the pleasure of reading Linux device drivers...
> :)
> > :
> > : Jordan
> > :
> > : Supriyo Chatterjea wrote:
> > : >
> > : > How do I find out the right device node for
> the
> > touch
> > : > screen?
> >
> >
> >
> >
>
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