On Wed, 1 Jun 2011 11:34:52 -0400, you wrote: >On Wed, Jun 1, 2011 at 11:22 AM, William Couture wrot= e: >> Hi all, >> >> We need to save/restore setup data for a product, and it would be nice >> to be able >> to do this via thumbdrive. =A0However, it seems that most 8-bit micros >> (we are using >> an ATMega, but code for a PIC could be used as a template) aren't up to = being a >> USB master. >> >> Is there any code out there that does this? =A0Or do we have to resort t= o using a >> Vinculum chip? =A0Or go with a SD / SDHC card (many examples out there)? >> >> Thanks, >> =A0 Bill > >SD will be an order of magnitude easier than being a USB master. >I'd recommend trying to do SD unless you can't get away from USB. You need to consider where /by whom the data needs to be accessible - if it= ;s always going to be one PC, SD isn;t a big deal, but if it could be anywhere, the fact that all PCs= have USB ports but most don't have SD readers could be a significant issue. Similarly if the media = is only plugged in when needed, USB sticks are probably more immediately available than SD cards.=20 If the media is always there, there are soem SD cards that fold into a USB = stick, avoiding the need for a reader : http://www.dpreview.com/news/0501/05010606sandisksdflip.asp I've had one in my camera for years and they are surprisingly robust. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .