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Thread: Linux Drivers for Lilliput Touchscreen

  1. #1
    Low Bitrate
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    Sep 2003
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    Seattle
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    Linux Drivers for Lilliput Touchscreen

    Hello all,

    I was hacking a bit on my lilliput touchscreen last night, and managed to get screen coordinated from a userspace application. Incase anyone wants to look at the code, its here:

    http://ciagon.dnsalias.com/touchkit.c

    This helps to show how the thing works, but what we really need is a kernel driver. I have added this to my "to do" list, but it might take me a while. If anyone wants to take a shot at it, the usb interface is trivial. You aquire an interface, and read interrupt in requests (from the only endpoint) into an 8 byte buffer. Byte one tells you when the user lifted his/her finger. X coord = byte[2]*128 + byte[3]. Y coord = byte[4]*128 + byte[5]. There is a little extra work that needs to be done for calibration and deciding what is a click or a drag, but this should be easy.

    If anyone would like to help, please drop me a note:

    tomh at yourmom dot com

    --Tom
    ME-6000, Lilliput 7" vga + touch, generic GPS, RedHat 9, custom mapping software.

  2. #2
    Constant Bitrate
    Join Date
    Jun 2002
    Posts
    185
    I just started programming my own frontend in Linux the other day. I have the Lilliput but I'm using Gentoo so none of the drivers work for me. I don't know how much help I'd be, but once I'm done with the frontend, I'd be willing to lend a hand.

    Tom
    1993 Probe GT
    Rio Car w/20gb

  3. #3
    Top Ramen lgbr's Avatar
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    Feb 2004
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    Spokane, WA, US
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    That script just initalizes the touchscreen? Can it be used with X?
    Audio Rockford Fosgate: 900 Watt 4-channel amp, 501bd Mono amp
    Computer AMD 2400+ XP, 1 GB DDR RAM, Orbit Micro 250W DC-DC PSU

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  4. #4
    Newbie
    Join Date
    Apr 2004
    Posts
    1

    redhat linux driver

    there is a touchscreen driver availible for download from cartft.com for redhat and some others
    [URL=http://www.cartft.com/shop/workshop/TFT/workshop/TFT/tftdrivers/Linux_1.0.2.0626.zip]

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