Hi, I want to use a FAT filesystem like Chan's FatFS or EFSL to PIC18, I
have already got low level routines for accessing an SD card, but:

What files of FatFS package do I need to modify?
Which ones do I NOT have to modify?
How do I link FatFS to my low level routines, so that it can access the
SD card through the SPI lines?

I have low level routines for SPI and MMC/SD card, if anybody is
interested drop me an email and I will send to you.

hi,
look at Microchip website.
There is a file system available for PIC18 series.

http://www.microchip.com/stellent/idcplg?IdcServic...