Lpc2000

Carsten Gr\ufffdn wrote:

>Hello,
>I have some code running now on a Embedded Artists 2148 board that 
>accesses a SD card (based on the philips code). So I can read/write 
>individual sectors....
>My plan is to use a SD card as a "circular" buffer for data, so I 
>won't be using a real "file system" like FAT16 etc.
>What I need now is a simple program (or some ideas for it) that can 
>access a SD card when connected to a PC using "raw" sector access....
>That way I will be able to read the data from the card when it is 
>inserted in a card reader in a PC.
>
>Any ideas/pointers ?
>
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>
Linux (maybe Cygwin as well?): use dd command to suck in the drive 
contents: dd if=/dev/sda of=mySDcard.img

If you don't want the whole drive image, limit dd: dd if=/dev/sda 
of=mySDcard.img bs=512 count=100

That will read the first 100 sectors off the SD card.

Assuming, of course, you used an media reader of some kind and inserting 
the card mounted it as /dev/sda

TomW



>Regards,
>Carsten
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>Yahoo! Groups Links
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-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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