Ugesh's profile - activity

hector_sensors_description package for neotic Hi, I am getting below errors when tried to follow some tutorial and tried

@kscottz could please kindly support me here

Hi, Some where you're using the sudo in your system. Can you restart and check once again

I am looking for an example and wanted to see through the logs how the discovery of the service works looks for some tut

Have you found the solution, if yes, could you please kindly share the solution?

DDS Tutorial with ROS2 Hi, I am trying to find the DDS Tutorial with ROS2 but there are many documents which leads to co

Hi, I am trying to implement the simple listener and talker as explained in ROS tutorial link http://wiki.ros.org/ROS/Tutorials/Wri... but I have done a small modification, the publishing to the topic will happen, whenever the listener node connects to the talker, otherwise the message will not be published.

Please check the below talker node implementation but some how the callback is not triggered whenever the listener is subscribed to the topic.

void Publisher::CreateTopic(const std::string &topicname, const std::size_t &queue)
{
    const ros::SubscriberStatusCallback callback_conn = std::bind(&Publisher::SubscriberStatusCallback_connect, this, std::placeholders::_1);
    const ros::SubscriberStatusCallback callback_discon = std::bind(&Publisher::SubscriberStatusCallback_Disconnect, this, std::placeholders::_1);
    chatter_pb = handle.advertise<std_msgs::String>(topicname, queue, callback_conn, callback_discon);
}

I have found the reason, I have used the ros::spinOnce(); instead of ros::spin() so no callbacks are processed incase of

SubscriberStatusCallback not called in listner node Hi, I am trying to implement the simple listener and talker as expla