C++ PowerCubeCtrl::getPC_Status方法代码示例

  /*!
   * \brief Publishes the state of the powercube_chain as ros messages.
   *
   * Published to "/joint_states" as "sensor_msgs/JointState"
   * Published to "state" as "pr2_controllers_msgs/JointTrajectoryState"
   */
  void publishState(bool update=true)
  {
	  if (initialized_)
	  {
		  ROS_DEBUG("publish state");

		  if(update)
			{pc_ctrl_->updateStates();}

		  sensor_msgs::JointState joint_state_msg;
		  joint_state_msg.header.stamp = ros::Time::now();
		  joint_state_msg.name = pc_params_->GetJointNames();
		  joint_state_msg.position = pc_ctrl_->getPositions();
		  joint_state_msg.velocity = pc_ctrl_->getVelocities();
		  joint_state_msg.effort.resize(pc_params_->GetDOF());

		  pr2_controllers_msgs::JointTrajectoryControllerState controller_state_msg;
		  controller_state_msg.header.stamp = joint_state_msg.header.stamp;
		  controller_state_msg.joint_names = pc_params_->GetJointNames();
		  controller_state_msg.actual.positions = pc_ctrl_->getPositions();
		  controller_state_msg.actual.velocities = pc_ctrl_->getVelocities();
		  controller_state_msg.actual.accelerations = pc_ctrl_->getAccelerations();

		  std_msgs::String opmode_msg;
		  opmode_msg.data = "velocity";

		  /// publishing joint and controller states on topic
		  topicPub_JointState_.publish(joint_state_msg);
		  topicPub_ControllerState_.publish(controller_state_msg);
		  topicPub_OperationMode_.publish(opmode_msg);

		  last_publish_time_ = joint_state_msg.header.stamp;

	  }

	// check status of PowerCube chain
	if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK) { error_ = true; }
	
		// check status of PowerCube chain 
		if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK) 
		{ 	
			error_ = true;
		} 
		else 
		{
			error_ = false;
		} 

    // publishing diagnotic messages
    diagnostic_msgs::DiagnosticArray diagnostics;
    diagnostics.status.resize(1);

    // set data to diagnostics
    if(error_)
    {
      diagnostics.status[0].level = 2;
      diagnostics.status[0].name = n_.getNamespace();;
      diagnostics.status[0].message =  pc_ctrl_->getErrorMessage();
    }
    else
    {
      if (initialized_)
      {
        diagnostics.status[0].level = 0;
        diagnostics.status[0].name = n_.getNamespace(); //"schunk_powercube_chain";
        diagnostics.status[0].message = "powercubechain initialized and running";
      }
      else
      {
        diagnostics.status[0].level = 1;
        diagnostics.status[0].name = n_.getNamespace(); //"schunk_powercube_chain";
        diagnostics.status[0].message = "powercubechain not initialized";
      }
    }
    // publish diagnostic message
    topicPub_Diagnostic_.publish(diagnostics);
  }

  /*!
   * \brief Executes the callback from the command_vel topic.
   *
   * Set the current velocity target.
   * \param msg JointVelocities
   */
  void topicCallback_CommandVel(const brics_actuator::JointVelocities::ConstPtr& msg)
  {
	  ROS_DEBUG("Received new velocity command");
	  if (!initialized_)
	  {	
			ROS_WARN("Skipping command: powercubes not initialized");
			publishState(false);
			return; 
		}
		
		if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK)
		{
			publishState(false);
			return; 
		}

 
	  PowerCubeCtrl::PC_CTRL_STATUS status;
	  std::vector<std::string> errorMessages;
	  pc_ctrl_->getStatus(status, errorMessages);

	  /// ToDo: don't rely on position of joint names, but merge them (check between msg.joint_uri and member variable JointStates)

	  unsigned int DOF = pc_params_->GetDOF();
	  std::vector<std::string> jointNames = pc_params_->GetJointNames();
	  std::vector<double> cmd_vel(DOF);
	  std::string unit = "rad";

	  /// check dimensions
	  if (msg->velocities.size() != DOF)
	  {
		  ROS_ERROR("Skipping command: Commanded velocities and DOF are not same dimension.");
		  return;
	  }

	  /// parse velocities
	  for (unsigned int i = 0; i < DOF; i++)
	  {
		  /// check joint name
		  if (msg->velocities[i].joint_uri != jointNames[i])
		  {
			  ROS_ERROR("Skipping command: Received joint name %s doesn't match expected joint name %s for joint %d.",msg->velocities[i].joint_uri.c_str(),jointNames[i].c_str(),i);
			  return;
		  }

		  /// check unit
		  if (msg->velocities[i].unit != unit)
		  {
			  ROS_ERROR("Skipping command: Received unit %s doesn't match expected unit %s.",msg->velocities[i].unit.c_str(),unit.c_str());
			  return;
		  }

		  /// if all checks are successful, parse the velocity value for this joint
		  ROS_DEBUG("Parsing velocity %f for joint %s",msg->velocities[i].value,jointNames[i].c_str());
		  cmd_vel[i] = msg->velocities[i].value;
	  }
		
	  /// command velocities to powercubes
	  if (!pc_ctrl_->MoveVel(cmd_vel))
	  {
     	error_ = true;
			error_msg_ = pc_ctrl_->getErrorMessage();
		  ROS_ERROR("Skipping command: %s",pc_ctrl_->getErrorMessage().c_str());
		  return;
	  }

	  ROS_DEBUG("Executed velocity command");
	 
	  publishState(false);
  }