by ober » Mon Mar 22, 2010 9:37 am
In that case, the program on your microcontroller play the important part, not the KC-21. Because once the KC-21 Bluetooth is connected, it becomes a wireless serial port.
Never develop program to receive such a big file before using microcontroller, cannot give much advise on this. You will need to save those files according to their special format, might also require big size of external storage. Are you plan to store it in removable drive like SD? If that is so, it gets more complex where you have to deal with file system, FAT.
I am wondering, why do you transfer those kind of file to microcontroller?