Posted on May 17, 2011 at 13:09To accomplish this, one can simply use DosFS and instead of remapping the ''DosFS_Read/Write'' to ''SDIO_Read/SDWrite'', just use any function you have to interface to your external memory (FSMC?).
You probably understand that the only advantage of FAT(16/32) is portability to Windows machines? If you want to read or write data to ram, in an organised way, why not use a simple table like:
[FileNumber, PartNumber, AdressStart, AdressStop]
Where you can write to a large buffer, update the file end. If you are writting to an older file, then you can use the part number to implement a fragmentation management.
Hope this helps.
-Relaxe
