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

[Pearless]

Hi,

I have found some code that works for a CD and MMC card, but it needs some
work to fix it up.

I have a general question. I assume it would be possible to extend Nut/OS so
that the MMC and CF cards can be used like any other block device (fopen,
fflush, fread. Fwrite, fclose), and included in the configurator, but I am
unsure how to extend the NutOS to do this, any pointers or ideas here?

I do not have unlimited time, and my first priority is my customer project
so currently I am using a fopen_mmc (etc) that I have created.

Douglas

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Ole Reinhardt
Sent: Saturday, 2 October 2004 7:36 p.m.
To: Ethernut User Chat (English)
Subject: RE: [En-Nut-Discussion] MMC Card interface to Ethernut

Hi,

> What tools did you use to do that?

I've connected an sd / mmc cardreader to my linux box. On Linux the card
is shown as scsi interface (emulation). You can now use fdisk to create
a partition table and mkdosfs to create a filesystem in one of your
partitions. I also have a card with an ext2 filesystem created in the
same way.

Btw: If you'd like to implement fat16 why not directly fat32. I'll
search if i have some code you could use. Would be great to have a block
device i/o and file system functionality also for bigger devices on
NutOS (we could use the same code on a CF card too.)

-- 
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