[En-Nut-Discussion] MMC Card interface to Ethernut

Peter Kunst S.calar at inter.nl.net
Fri Oct 1 18:10:16 CEST 2004


Check this!

http://www.ulrichradig.de

Under AVR projecte -> mmc-sd

Cheers,
Peter


> -----Oorspronkelijk bericht-----
> Van: en-nut-discussion-bounces at egnite.de
> [mailto:en-nut-discussion-bounces at egnite.de]Namens Simon Clarke
> Verzonden: vrijdag 1 oktober 2004 18:03
> Aan: Ethernut User Chat (English)
> Onderwerp: Re: [En-Nut-Discussion] MMC Card interface to Ethernut
>
>
> Pearless wrote:
>
> > Hi people,
> >
> >
> >
> > I now have a MMC card (32MB) attached to an Ethernut 1.3g (v2.1 only
> > just arrived today) via SPI (total cost of hardware excluding the card
> > is about USD$5).
> >
> >
> >
> > I can interrogate the card and all of its internal registers,
> > parameters and read sectors.
> >
> >
> >
> > I am now working out how to access the FAT16 file system (one of four
> > possible file systems under the MMCA specs, te other being ‘universal’
> > and ‘unknown’).
> >
> >
> >
> > I note that there is also an option for up to 4 partitions under the
> > ‘hard disk like’ file system.
> >
> > Has anyone **ever** come across the ‘Hard disk like file system’ being
> > used on a MMC card as my research seems to indicate this is more
> > common with compact flash cards???
> >
> >
> >
> > When it all seems to work, I intend to release it as a Ethernut
> > project, unless there is more immediate interest then I will share the
> > pre-alpha code.
> >
> >
> >
> > Douglas
> >
> >
> >
> >
> >
> >
> > ---
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> >
> >------------------------------------------------------------------------
> >
> >_______________________________________________
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> >En-Nut-Discussion at egnite.de
> >http://www.egnite.de/mailman/listinfo.cgi/en-nut-discussion
> >
> >
> this may be of some help or guidance , although it's in german , and
> looks as if only read is implemented fat 16
>
> http://www.ulrichradig.de/index.html
>
> Simon
>
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