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Last Post 22 Jul 2004 05:39 PM by  pmains@aquameasure.com
WinCE 4.2 MMC Driver Support
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fbergmaier
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20 Jul 2004 02:51 PM
    Hi, I am trying to bring up the Microsoft provided SD/MMC Storage Block Driver to use a MMC card with the Logic LH7A400 card engine. I have added the driver and updated the project.reg, but WinCE does not recognize that the card is present.

    Additionally, I have experimented with the sdconfig.h settings as documented in the SanDisk Windows CE MMC SDK Porting doc available on their website.

    Has anyone managed to get this driver to work with the card engine?

    Thanks,
    Frank
    pmains@aquameasure.com
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    22 Jul 2004 05:39 PM
    LogicPD provides a Compact Flash driver, and I've used that successfully. If you've already bought the MMC/SD card, though, that may be of little solace.

    The fact that LogicPD has provided so many of its own drivers leads me to believe that a Microsoft provided WinCE driver may not be the solution. Their software may work on, say, a PocketPC, but I don't think that's a guarantee that it will work on an LH7A400. Hardware drivers normally are, by definition, hardware specific.

    I'm new to this embedded programming thing myself, so I could be wrong. After all, I thought the benefit of having a common OS was that one program would work on multiple machines. Part of me says it shouldn't matter what sort of chip you're running as long as the port type and card type is the same.

    I don't happen to have an MMC card on hand, so I can't play around with one to find out.

    Hope that helps,
    Pete
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