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Last Post 16 Nov 2006 02:05 PM by  mwaddel
LCD Display on new M5329EVB revision
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mwaddel
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15 Nov 2006 01:19 PM
    I'm testing our frame buffer software with the 1003987 Rev D
    baseboard and all I see is a white screen on the display. (It's
    a 12.1 in display 80000175 Rev H.) The same code works with
    the older boards 1004544 Rev1.

    I saw a PCN related to the backlight on the new boards and we
    tried to implement those changes. It changed the display, but
    it's still not right. Do you know if there is something else
    with the new boards and LCDs that I should look at? Any hints
    would be appreciated.
    Anonymous
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    --
    15 Nov 2006 01:30 PM
    Hello,

    Have you verified that you can do a 'video-open 2 16' in LogicLoader and then do a 'draw-test'?

    Thanks,
    mwaddel
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    15 Nov 2006 01:59 PM
    Posted By aaronlpd on 15 Nov 2006 1:30 PM

    Have you verified that you can do a ''video-open 2 16'' in LogicLoader and then do a ''draw-test''?




    These boards have dBUG as the bootloader. This is for the Linux BSP.

    But that does bring up a question, did you need to modify LogicLoader when
    you rev'd this board? If you did, could you tell me what you changed for the
    video demo?

    Thanks
    mwaddel
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    16 Nov 2006 02:05 PM
    I believe I found the problem in our device driver.

    The values that came up in the LCD registers by default were good enough
    to see an output with the old wiring, but now that that's changed the default
    values don't work. After setting up the MCF_LCDC_LPCCR and
    MCF_LCDC_LPCR registers I can see an output on the display.
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