James,

This has been released for some time, but I haven't gone through the detail
of it yet...  but I think it might be helpful to you.

http://www.microchip.com.tw/modules/mydownloads/visit.php?cid=1&lid=69

It's a link to get a zip file, which contains some material + code for CF
and SD card. If I recall correctly, the file system is FAT16.


Best regards,

WH Tan





> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
> Of James Newtons Massmind
> Sent: 31 March 2007 00:43
> To: 'Microcontroller discussion list - Public.'
> Subject: [BUY] Help with microSD or SD card interfacing
>
>
> Is there anyone in the So Cal (e.g. from San Diego to L.A.) who has direct
> experience with any of the following:
>
> - Hooking an SD card to a micro.
> - Hooking a microSD card to a micro
> - Using SPI mode on a SD or microSD card.
> - Using SD 1 bit mode on a SD or microSD card.
> - Using SD nibble mode on a SD or microSD card.
> - Verifying SPI mode communications.
> - SPI comms on the MSP430.
>
> I'm quite a few hours into attempting to connect a microSD (aka
> TransFLASH)
> card to an MSP430F1611 and I'll be damned if I can get any response back
> from the card.
>
> I've read the datasheets, I've read the many available web pages on the
> subject, I've checked, re-checked, double checked and had others check the
> connections, and I'm looking at the signals I'm putting out on a logic
> analyzer and they are dead on exactly what is called for. And there is NO
> response from x4 cards.
>
> I've verified that  all the cards we have are working via an SD
> card adapter
> to a reader in a USB hub, but I doubt that is using SPI mode. We purchased
> microSD cards from Transcend with datasheets that specify that they DO
> support SPI mode (which is optional on microSD).
>
> Nothing.
>
> It's time to put pride aside and call for help. We can pay a
> reasonable fee
> for anyone who has done this before, especially if you have a working unit
> that uses SPI that we can verify our cards in and watch the signals on.
>
> If you are not in the area, but could possibly post a screen shot of the
> actual signals you are putting out, that would also be worthwhile.
>
> Thanks in advance.
>
> ---
> James Newton: PICList webmaster/Admin
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