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Setting output to default to DVI ver a cold boot

James Chambers
Prodigy 20 points
Other Parts Discussed in Thread: OMAP3530

Hi,

I need some help setting the default display output to DVI on my Mistral TI OMAP 3530 Rev G ARM board running Windows CE 6.0 on the Adeneo BSP.  I've tried speaking directly to TI's technical support on this issue and they are, to put it as politely as I can, as much use a chocolate teapot and have given me the run-around for ~17 days straight now without any progress being made on this whatsoever.

My problem is that I need to have the board output on the DVI port by default; I can get it to temporarily output to the DVI, but whatever I try I cannot get this setting to persist over a cold boot and the board reverts back to LCD output. 

If I connect to the board via putty on UART 3 and get to the eboot display menu and set the output to be DVI, save the settings, and boot the system then the DVI output works fine.  If I then use the WARM_RST or OMAP_RST buttons the DVI output is still enabled over the reboot; but if I completely switch off the board by SW2 or at the wall and switch it back on again then the display will be set back to the small LCD display.

I’ve tried setting the environment variables BSP_DVI_ENABLE = 1 and BSP_DVI_1280W_720H = 1 in my PB solution but it appears to have no effect.  

I am at a loss as for things to try, does anyone have any suggestions?  I’m finding it hard to believe I’m the only person to have experienced this issue!

Thanks in advance for any help/advice!

  • 0
    TI__Expert 5320 points

    Hi James

    I am surprised that the cold reboot is resetting the saved eboot settings. Can you tell me which BSP version are you using and are you using SD boot or NAND boot? Are you using TI delivered BSP as is or have you done any changes to the eboot?

    Another way to default always to DVI mode is to change the eboot code. Change the following in PLATFORM\EVM_OMAP3530\SRC|BOOTLOADER\Eboot\main.c, function OEMPreDownload():

    g_bootCfg.displayRes = OMAP_LCD_DEFAULT;

    to

    g_bootCfg.displayRes = OMAP_DVI_1280W_720H.

    Make sure you don't have any previous eboot config stored in NAND.

    -Madhvi

  • 0 in reply to Madhvi
    Prodigy 20 points

    Thanks Madhvi! Changing the default in the source code worked a treat, it now boots into DVI mode exactly like I wanted.  FYI I was using SD boot and hadn't made any changes to the eboot source code.  Thanks again for your help!

     

    James C