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:
2013-03-13
Revision:
5:fc580cab6a61
Parent:
3:17ca010bda2e
Child:
6:a801dcc9ff68

File content as of revision 5:fc580cab6a61:

https://mbed.org/users/mbed_official/code/USBHost/#1571e517a91b