You need to plugin the USB, and read the doc and code.

Dependencies:   USBHost mbed

Fork of USBHostMSD_HelloWorld by Samuel Mokrani

USBHost.lib

Committer:
samux
Date:
2013-03-06
Revision:
0:0d68fe822228
Child:
1:473f339c54c1

File content as of revision 0:0d68fe822228:

https://mbed.org/users/mbed_official/code/USBHost/#a554658735bf