[Build] Touch Panels

[nils at shkoo.com]

Yeah, I noticed that and swapped it over to the rs232 port.  I still 
couldn't get anything from it.

-nils

On Sun, 27 Sep 2009, Zedd Epstein wrote:

> The IBM one is hooked up via USB, not serial. I meant to send you an email,
> but forgot.
>
> Zedd
>
> On Sun, Sep 27, 2009 at 8:43 PM, <nils at shkoo.com> wrote:
>
>> I got the netboot image working to automatically start X windows and enable
>> the touch screen.
>>
>> Of the three laptops set up on the table, here is the status of each:
>>
>> Left one, IBM laptop:
>>
>> Display seems to work OK.  Touchscreen does not supply any serial data.
>> Unknown reason.  Suspect problem with touchscreen.
>>
>> Middle one, dell laptop:
>>
>> When external VGA cable is plugged in, it doesn't seem to display anything
>> on the internal LCD nor on the external touchscreen.  When the external VGA
>> cable is unplugged, displays X windows on internal LCD but allows external
>> touchscreen for navigation.
>>
>> Right one, toshiba laptop:
>>
>> Display works ok, touch functionality works ok.  A little jittery; seems to
>> like to return to the upper left corner upon touch release.
>>
>> -nils
>>
>>
>> On Sat, 26 Sep 2009 nils at shkoo.com wrote:
>>
>>  On Sat, 26 Sep 2009, Zedd Epstein wrote:
>>>
>>>> I have 4 laptops net booting, with touch screens connected to them. Video
>>>> works, net boot works, touching them doesn't work. I'm using the usb to
>>>> serial adapters that nils bought. Any guesses?
>>>>
>>>
>>> Hi,
>>>
>>> They do not work automatically upon bootup yet.  Manual intervention is
>>> still required to get them to work after bootup.  I'll be at 2169 tomorrow
>>> and I'll work on polishing.
>>>
>>> If you have a spare windows box we could reverse engineer the driver on
>>> that would be super helpful, or if you want to do it yourself by going to
>>> the www.inexio.co.uk website.  It would be nice to upgrade the firmware
>>> if
>>> there's some way to do that, since I think it was a firmware problem that
>>> was causing the glitchy cursor.  But it would be nice to compare and
>>> contrast how well the windows driver works.
>>>
>>> There are two methods of setting up the drivers for the touchscreen. I've
>>> gotten movement to work with both methods.  Producing a button-down event
>>> from touching the screen works under some conditions with the 1st method
>>> ("evtouch" with the kernel module), but I haven't gotten it to work at all
>>> with the second ("xf86-input-inexio").
>>>
>>> On the "s1" server, /netboot/config contains the debian live config tree
>>> for building netboot images.  Running /netboot/build.sh builds and
>>> installs a debian live image based on that config tree.  Subsequent to
>>> running build.sh, anything netbooting off of s1 will get the new image.
>>> (And anything currently netbooted off of s1 will likely get confused).
>>>
>>> /netboot/config is managed with mercurial, so if you change it please
>>> commit oyur changes with an appropriate email address and comment so
>>> anyone who's working on it knows what's going on.
>>>
>>> You can use "lh_config" and friends to add/change /netboot/config, but I
>>> find it easier to just edit the files manually.
>>>
>>> Anyways, there are two touchscreen drivers that get included in the image:
>>>
>>> 1) "evtouch", which takes input from the linux "inexio" kernel driver.
>>>   Here are the steps to use this driver after booting up:
>>>
>>> a. Copy s1:/srv/debian-live/inexio-module onto the netboot client (I
>>> forget where it's mounted) and build "inexio.ko" and the custom version of
>>> "inputattach".
>>>
>>> b. insmod inexio.ko
>>>
>>> c. use the custom inputattach to "inputattach --inexio /dev/ttyUSB0" to
>>> point the kernel driver at the right serial device
>>>
>>> d. Use /etc/X11/xorg.conf.new (which may require some hacking; I'm not
>>> sure I've gotten everything right there) to start
>>> x-windows
>>>
>>> 2) "xf86-input-inexio", which is a X-windows input driver that reads
>>> directly from serial. Here are the steps to use this driver:
>>>
>>> a. The xf86-input-inexio package should be already installed; if not, copy
>>> s1:/srv/debian-live/xf86-input-inexio and build it on the netboot client.
>>>
>>> b. Edit the x11 config as shown in "man 4 inexio". You will want to use
>>> /dev/ttyUSB0 to use the rs232 to usb adapter.
>>>
>>> Otherwise I'll be in tomorrow to attempt to get the netbooting to
>>> automatically touchscreenize seamlessly.
>>>
>>> -nils
>>> _______________________________________________
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>>>
>>>
>