ECE4180
You need to plugin the USB, and read the doc and code.
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USBHostMSD_HelloWorld
by 
Samuel Mokrani
History
Use latest USBHost lib
2013-03-14, by samux [Thu, 14 Mar 2013 14:23:42 +0000] rev 8
Use latest USBHost lib
Use latest USBHost lib
2013-03-14, by samux [Thu, 14 Mar 2013 11:53:20 +0000] rev 7
Use latest USBHost lib
Use latest USBHost lib
2013-03-13, by samux [Wed, 13 Mar 2013 17:34:04 +0000] rev 6
Use latest USBHost lib
Use latest USBHost lib
2013-03-13, by samux [Wed, 13 Mar 2013 15:50:06 +0000] rev 5
Use latest USBHost lib
add comments
2013-03-13, by samux [Wed, 13 Mar 2013 10:30:25 +0000] rev 4
add comments
Use latest USBHost
2013-03-13, by samux [Wed, 13 Mar 2013 10:28:43 +0000] rev 3
Use latest USBHost
reduce stack size
2013-03-12, by samux [Tue, 12 Mar 2013 17:35:32 +0000] rev 2
reduce stack size
use latest USBHost
2013-03-12, by samux [Tue, 12 Mar 2013 17:30:04 +0000] rev 1
use latest USBHost
USBHostMSD Hello World
2013-03-06, by samux [Wed, 06 Mar 2013 17:06:56 +0000] rev 0
USBHostMSD Hello World