The ROS Wiki is for ROS 1. Are you using ROS 2 (Humble, Iron, or Rolling)? Check out the ROS 2 Project DocumentationPackage specific documentation can be found on index.ros.org
rosserial overview:
NodeHandles and Initialization
Messages
Publishers and Subscribers
Time
Logging
Limitations
Protocol
Parameters
Wiki: rosserial/Overview (last edited 2018-06-21 08:48:10 by Darby Lim)