example_moveit_node.cpp

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#include "ros/ros.h"
#include "sensor_msgs/JointState.h"
#include "hebiros/AddGroupFromURDFSrv.h"

using namespace hebiros;


//Global variable and callback function used to store feedback data
sensor_msgs::JointState feedback;

void feedback_callback(sensor_msgs::JointState data) {
  feedback = data;
}


int main(int argc, char **argv) {

  //Initialize ROS node
  ros::init(argc, argv, "example_moveit_node");
  ros::NodeHandle n;
  ros::Rate loop_rate(200);

  std::string group_name = "x_demo";

  //Create a client which uses the service to create a group
  //The urdf for x_demo must have already been set in the robot_description parameter
  ros::ServiceClient add_group_client = n.serviceClient<AddGroupFromURDFSrv>(
    "/hebiros/add_group_from_urdf");

  //Create a subscriber to receive feedback from moveit
  //Register feedback_callback as a callback which runs when feedback is received
  ros::Subscriber feedback_subscriber = n.subscribe(
    "/joint_states", 100, feedback_callback);

  //Create a publisher to send desired commands to a group
  ros::Publisher command_publisher = n.advertise<sensor_msgs::JointState>(
    "/hebiros/"+group_name+"/command/joint_state", 100);

  AddGroupFromURDFSrv add_group_srv;

  //Construct a group using a urdf
  add_group_srv.request.group_name = group_name;
  //Call the add_group_from_urdf service to create a group until it succeeds
  //Specific topics and services will now be available under this group's namespace
  while(!add_group_client.call(add_group_srv)) {}

  while(ros::ok()) {

    //Publish the feedback from moveit as a command
    command_publisher.publish(feedback);

    ros::spinOnce();
    loop_rate.sleep();
  }

  return 0;
}