Does anyone here knows about any free FAT or FAT32 (preferably) for SD memory card implementation that works well inside FreeRTOS _and_ compiles and runs in PIC24 or dsPIC? I tried to do an EFSL backend to PIC30 architecture, but I have no time to spend on it (if anyone is interessed in, I can share the code, if it is not already included in EFSL project). So… I would be very thankfull for any help.

I have an old copy of a SAM7 FreeRTOS.org WEB server project that uses EFSL to read HTML from an SD card.  I can send it to you if you like (you will have to send me a private email to r _dot_ barry [at] freertos.org). You might also like to check out http://elm-chan.org/fsw/ff/00index_e.html. Regards.

Thanks for the interest, but I think it is not what I really need. ARM7 sample code is really abundant over the net, and some are good enough. The PIC-30 arena (dsPIC and PIC24) however, is not that fertile. I have no EFSL backend working for PIC-24, and, in spite of the fact that FatFS (elm link you sent) tells me it should work with PICs, I couldn’t find the exact implementation I need for PIC-30. I think my task is somewhat daunting…