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1 | initial version |
Does your camera_driver publish or subscribe to the same topic? But with another message type?
Then the topic's message type is fixed to that type, and any new node cannot use that topic but with another type (might be the correct or not).
2 | No.2 Revision |
Does your camera_driver publish or subscribe to the same topic? But with another message type?
Then the topic's message type is fixed to that type, and any new node cannot use that topic but with another type (might be the correct or not).
Another guess: Be means of "only once", I assume you mean you only publish one message. Do you latch them?
When you start the publisher first, and then the subscriber, the latter might not receive that message when the publisher does not latch. It's not even a real race condition, but a simple sequence.