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Hardware > Using Libfat with MicroSD

#167906 - Nitto - Fri Apr 03, 2009 1:52 am

Is it possible to directly use Libfat with a MicroSD with a chip from DigiKey(122-1448-ND)? Or would I have to have some other chip that will preform operations and then call it with the main chip?

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=122-1448-ND
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#167911 - Dwedit - Fri Apr 03, 2009 4:52 am

There's never anything stopping you from making a DLDI driver if you know how to talk to something that will read or write from any type of memory.
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#167912 - Nitto - Fri Apr 03, 2009 5:53 am

Dwedit wrote:
There's never anything stopping you from making a DLDI driver if you know how to talk to something that will read or write from any type of memory.


Touche, But that was a chip that is simmaler to one used in PassMe and do I need to use all of the 32 I/O for the rom or Do I have a lot free or two so could I get another chip, make a program to read/write for my SD and then use I/O on the main chip if I only have 2 free?

Also do you know any resources talking about programming a read/write for an sd with SPI?

Edit: I am also looking into: http://www.xilinx.com/publications/xcellonline/xcell_55/xc_pdf/xc_spi55.pdf

Edit Two: Thats fail ^

Edit Three: I am looking into: MMC with SPI by: Ed Waugh 2004, www.edwaugh.co.uk
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~Simplicity is what counts but so does design