Problem with subscribing to robot_pose_ekf/odom_combined
I am working with Turtlebot. I launched the following launch files containing openni, minimal.launch, depthimage_to_laserscan and robot_pose_ekf
On the workstation, When I run the command rostopic list I can see both /odom and /robot_pose_ekf/odom_combined in the list of topics.
Even when I run rostopic echo /robot_pose_ekf/odom_combined I can see the content of the that topic on the terminal.
Now, the problem when I subscribe to this topic in my C++ file like this
robot.OdomCombinedSubscriber = nh.subscribe<nav_msgs::odometry>("/robot_pose_ekf/odom_combined", 10, &TurtlebotRobot::OdometryCombinedCallback, &robot);
There is nothing received in the callback. When this instruction is executed, there is a error message in red in the Tutrlebot saying:
[ERROR] [1389688193.050254972]: Client [/testApp] wants topic /robot_pose_ekf/odom_combined to have datatype/md5sum [nav_msgs/Odometry/cd5e73d190d741a2f92e81eda573aca7], but our version has [geometry_msgs/PoseWithCovarianceStamped/953b798c0f514ff060a53a3498ce6246]. Dropping connection.
I got a similar error for the bumper message but this was when I was using Groovy on turtlebot and Hydro on workstation. Now, I put both to hydro but still I got the message above.
Any help will be appreciated.
