040000 tree e541409e85c8c66d1d77b7b692894f20c075a0ca	libboard_sam3s-ek
040000 tree b3de46abefe63862d90fb810e89467facf12b719	libchip_sam3s
040000 tree 04d10088023738476a678a4b0b17fcc5abe059cb	usb