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RE: [lpc2000] Re: Cheap SD Flash File System

2005-11-10 by Bill Knight

On Thu, 10 Nov 2005 15:44:54 -0000, Paul Curtis wrote:

>Hi Bill, 

>> A pretty good, open-source, no-pay FAT layer is available at 
>> <http://alumnus.caltech.edu/~pje/rdcf2.txt>.  The 
>> implementation there is limited to FAT16 but can be extended 
>> and has a lot of nice features.

>FAT12 is more complex than FAT16 when dealing with FAT 12-bit FAT
>entries that span a sector.  A lot of SD cards are formatted FAT12 by
>default, so FAT16 is no good...  Its requirements are also pretty high,
>requiring a 1K static buffer.  The PRLLC implementation (and mine for
>that matter) can run with a 512-byte static or dynamic buffer.

>I'll take a look at this.  It's something that I didn't find using
>Google, which is why I wrote my own implementation that is now part of
>NetBASIC.

>Regards,

>--
>Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
>CrossWorks for MSP430, ARM, AVR and now MAXQ processors


Paul
  I may be off on which FATxxx it supports.  It has been a while since
I last used it.  It was written quite a while ago and lacked support
for larger drives.  Best check the docs and code to determine exactly
what it does support.

-- 
Bill

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