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

[Pearless]

Hi,

The code there is interesting, and is read only and doesnot appear to handle
directories, etc, but it may well help.

I am looking at the MS Specs for FAT and I will probably just attempt FAT16,
but may do FAT12 and FAT32, depends on the time available.

Thanks, Douglas 

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Simon Clarke
Sent: Saturday, 2 October 2004 4:03 a.m.
To: Ethernut User Chat (English)
Subject: 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
>
>  
>
>  
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.771 / Virus Database: 518 - Release Date: 28/09/2004
>
>-----------------------------------------------------------------------
>-
>
>_______________________________________________
>En-Nut-Discussion mailing list
>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

_______________________________________________
En-Nut-Discussion mailing list
En-Nut-Discussion at egnite.de
http://www.egnite.de/mailman/listinfo.cgi/en-nut-discussion

---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.771 / Virus Database: 518 - Release Date: 28/09/2004
 

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.771 / Virus Database: 518 - Release Date: 28/09/2004