[quote:97a876ca7b]In that case how do I read a MMC card and copy its files on my resident AVR-DOS mmc card ? [/quote:97a876ca7b]
Depending on the amount of data you want to copy you could read through config xram for xmega (there are some boards out there which already have the external memory already on it)
http://avrhelp.mcselec.com/index.html?configxram.htm
So you can copy the data to XRAM and then write it back to the new SD Card.
MAK3
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