Messages in this thread | | | Subject | Touchscreen hardware hacking/driver hacking. | Date | Tue, 17 Oct 2006 15:30:43 -0500 | From | <> |
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I'm working on a prototype Hitachi tablet, it uses a Fujitsu 4-wire resistive touchscreen. {10.4" I think} I've found that windows-xp embedded uses a generic ps/2 driver for the device.
I've ripped this thing to pieces on several occasions looking for chips to help the porting, my problem is that I can not find the analog-digital converter for this thing. The connector goes to a surface mount header on an 8 layer board. I loose the traces almost instantly. Given that I can't find the converter anywhere what should I do next?
I've done my homework and found that this HAS to be either serial or usb attached according to Fujitsu. Aparently it's neither. There are no unknown USB devices {or known matching}, and there is no activity on the single serial port on the system. Since the windows driver uses PS/2 as the interface I have a horrible feeling this thing has an interpretation layer that makes it a PS/2 mouse, and that may or may not royally be a nightmare.
I would have posted this to a different group but there is no "input" mailing list.
Help?
I'll give a reward to anyone willing to actually help me get this hacked out. Reward defined: Permanent shell access to my personal development envirnoment for testing kernel code. Equipment in the environment: ARM, Alpha, x86-32, MIPS/Origin, HPPA, SPARC, PPC
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