040000 tree e541409e85c8c66d1d77b7b692894f20c075a0ca	libboard_sam3s-ek
040000 tree 1d70b8e6f8f61859eb44df5feb3a7e297d45f31e	libchip_sam3s
040000 tree e164f682bdba7668a6794fcd39b8fc21a00af519	usb