I just finished some C18 code that talks to MMC/SD cards. I'm reading and
writing text files using FAT16. It can also format cards from 128M to 1G.
I use an SPI interface to the card. I'm running the PIC at 5V and using a
Maxim level translator to get to the 3 or 3.3V (I'm at home and don't
remember the exact voltage). The MMC/SD is pretty easy to talk to. Digging
thru the details of FAT16 was fun. If needed, I may be able to send you
some code.

Harold


> I am developing a PIC based project that will play MP3 sound effects and
> music.
>   I have decided to use the STA013 MP3 decoder.
>   To simplify development, I want to store all of my MP3 files on an SD
> card or CF card.
>   This would allow me to simply add and remove files with a PC and Card
> reader.
>   When the card is plugged into my PIC circuit, the PIC will need to read
> data from FAT encoded data files out of the SD or CF card. I would
> prefer to use the SD card since they are smaller and lighter (important
> in my application). I am not sure if its tougher to interface a CF vs.
> SD card to a PIC18 series. I found the pinouts for the SD card, however
> its not 100% clear how to interface to a PIC (additional interface
> circuity, pull up resistors, etc.). Another help would be to find some
> PIC drivers to read data from FAT files on these cards. Any direction
> would be helpfull.
>   Thanks
>
>
>
>
> ---------------------------------
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