Yep, for the first time this will be (mostly) a code article :-) .
But if one day you want to make a Hi-Speed (480Mbit/s) USB composite device with CDC (communication) and MSD (mass storage) classes, this is the post you'll want to read.
Atsam3u + SDCard + USB cdc/msd + fat32 with at91lib & Chan's fat code
By limpkin on Tuesday, December 4 2012, 13:03 - My Projects