A ROS message that contains no data, Signal only?
Hello all,
Newbie here with ROS, and I have to say I love it. Its a lot of fun and I can only imagine the possibilities. With that said.
I haven't had any luck finding anything of its kind, but does ROS (Python) have anything that resembles something like an empty argument pyqtSignal, signal-slot, but between Nodes. It seems that I could consider ROS Pub/Sub to be similar, however I would like to trigger a signal of sorts as I don't need to send any data to the node I'm communicating with.
The simple solution is what I'm currently doing which is to create a publisher using String. and don't bother defining the string. Sends an empty message and it triggers the event I want.
However, I can't imagine there isnt a simple signal that can be linked like pub/sub that doesn't require a data_class, unlike Publishers.
Does ROS have anything of this nature?