Tracking Hub Administrator Guide
Version 1.4 | Published October 30, 2020 ©
Description of the FreeD protocol
The following shows a complete description of the FreeD protocol.
With the use of the XML Protocol Description, it is much easier and faster to react to new tracking protocols of new manufacturers:
<?xml version="1.0" encoding="utf-8"?> <viz_xml_tracking title="xml_freed"> <interface type="serial" baud ="38400" size="8" parity="odd" stop="1"> </interface> <!--option for type "udp" "tcp" ? <!--option for parity "none", "odd", "even", "mark", "space" ? <!--option for stop 1, 2 ? <!--option for interface Type "udp" or "tcp" <ip>10.10.10.10</ip> <port>6000</port> ? <!--option for checksum calculation 1,2,3,4,... we'll use predefined functions> ? <!--option for value UINT32 INT32 UINT16 INT16 ? <!--option for order bigendian littleendian ? <!--option for calc + - * / and one value ? <!--do not use hex values, 0x80000 = 524288 --> <checksum pkglen="29" calculation="1"> </checksum> <extraction count="9"> <axis name="rotx" start="5" len="3" order="bigendian" value="INT32" calc="/ 32768"></axis> <axis name="roty" start="2" len="3" order="bigendian" value="INT32" calc="/ 32768"></axis> <axis name="rotz" start="8" len="3" order="bigendian" value="INT32" calc="/ 32768"></axis> <axis name="posx" start="11" len="3" order="bigendian" value="INT32" calc="/ 640"></axis> <axis name="posy" start="14" len="3" order="bigendian" value="INT32" calc="/ 640"></axis> <axis name="posz" start="17" len="3" order="bigendian" value="INT32" calc="/ 640"></axis> <axis name="zoom" start="20" len="3" order="bigendian" value="INT32" calc="- 524288"></axis> <axis name="focus" start="23" len="3" order="bigendian" value="INT32" calc="- 524288"></axis> <!--example for not define axis ? <axis name="iris" calc="!"></axis> </extraction> </viz_xml_tracking>