040000 tree e541409e85c8c66d1d77b7b692894f20c075a0ca	libboard_sam3s-ek
040000 tree 1d70b8e6f8f61859eb44df5feb3a7e297d45f31e	libchip_sam3s
040000 tree 25cfc3bb8ee1c370875d6c38fb1417333371688d	usb