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问题背景：使用ROS的dynamic_reconfigure动态调参，在dynamic_reconfig节点的参数服务回调函数中发布自定义消息/pidconfig,在另一功能包的pidctrl节点中订阅该话题，在回调函数中打印消息内容。 现象：无法订阅到该topic，使用rostopic list能够显示/pidconfig，使用rostopic echo /pidconfig能够正常显示该消息内容。使用rqt_graph只能显示两个节点，不能显示dynamic_reconfig节点向pidctrl节点发送的/pidconfig话题
/pidconfig