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Many ROS nodes use the clock (simulated or wall time) to timestamp messages, synchronize different data streams, and coordinate actions. Therefore, having nodes that use simulated time talk to nodes using the wall clock is not a good idea and therefore it is not supported.
If you explain why you want to do this, perhaps the community can suggest a better solution to your actual problem (see: http://xyproblem.info/ )
| | 2 | No.2 Revision |
Many ROS nodes use the clock (simulated or wall time) to timestamp messages, synchronize different data streams, and coordinate actions. Therefore, having nodes that use simulated time talk to nodes using the wall clock is not a good idea and therefore it is not supported.
If you explain why you want to do this, perhaps the community can suggest a better solution to your actual problem (see: http://xyproblem.info/ )
EDIT
Setting up an NTP server is not hard and it does not require any additional hardware. The ROS NetworkSetup recommends using Chrony as the NTP server and client software.
I strongly recommend that you run the NTP server on the same machine as your ROS master, since it will be reachable from all of the other computers.
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