040000 tree e541409e85c8c66d1d77b7b692894f20c075a0ca	libboard_sam3s-ek
040000 tree 18e7a2f692015e72bd9eb852717f30e63e9fb85c	libchip_sam3s
040000 tree e164f682bdba7668a6794fcd39b8fc21a00af519	usb