More comments about BOGS and audiostix redesign. Another key component of any LCD interface
is the +/- supply bias generator and any some kind of backlight. I see Maxim has a bias generator/RS232 converter
combo chip which may be nice. The Sharp pseudo-standard LCD fine pitch connector would be nice also. For backlight
control I used the PWM1 from PXA255. Support for some or all of this would be great.
> Just as an FYI. I was able to get the ucb1400 from the audiostix to
> function as both the sound controller and a touch screen driver under
> Windows CE. I added another small connector to the audiostix and wired
> up the AC97 and power pins then brought it to my breakout-gs AC97
> interface. The breakout board also has the LCD display interface.
> The audiostix was outboarded and not part of the Gumstix/netMMC/
> breakout-gs stack.
> This was rather kludge and fragile but it worked.
> I added the other small connector on audiostix for the touch (x-y)
> I still have problems with the calibration but I don't think it has
> anything to do with basic hardware setup.
> Wouldn't it be great if someone would build a LCD interface board!
> It would be pretty
> much a audiostix with added LCD and other breakouts.
We're in the midst of redesigning the audiostix to add breakout-gs style pads for all the signals which the ucb1400 doesn't use, so that it'll be pretty easy to hook up an LCD panel to an audiostix to have audio + touchscreen + LCD (due to popular demand). By "easy to hook up" I mean, as easy as it is to hook up to a breakout-gs. Gordon's also planning on doing what he calls "BOGS" sub-boards which are basically little boards with feet on them designed to slot into the holes on the BreakOutGS (hence BOGS) and then just basically have a connector on them for particular panels. We could make those pretty easily for any panels which turn out to be popular -- they'd basically just slot in perpendicularly to the breakout-gs board (or new audiostix). We're also redoing the thumbstix to basically be breakout-gs + USB male connector, and these would fit there too.