kbrtny/PX4Firmware — pull request #1 by davids5 (2014-12-20 17:59:26+00:00)
Title: This has working USB CDC/ACM with NSH

The major issues was the clock and the driver (in my master of P4Nuttx)

Please check the derived clocks you depend on.

The CPU should be running at 48Mhz now as well as all the clocks