p2osnode.cc

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/*
 *  P2OS for ROS
 *  Copyright (C) 2009
 *     David Feil-Seifer, Brian Gerkey, Kasper Stoy,
 *      Richard Vaughan, & Andrew Howard
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <iostream>

#include <ros/ros.h>
#include <geometry_msgs/Pose.h>
#include <geometry_msgs/PoseStamped.h>
#include <p2os_driver/p2os.h>
#include <p2os_msgs/MotorState.h>
#include <tf/transform_datatypes.h>

int main( int argc, char** argv )
{
  ros::init(argc,argv, "p2os");
  ros::NodeHandle n;

  P2OSNode *p = new P2OSNode(n);

  if( p->Setup() != 0 )
  {
    ROS_ERROR( "p2os setup failed..." );
    return -1;
  }

  p->ResetRawPositions();

  ros::Time lastTime;
  
  while( ros::ok() )
  {
    p->check_and_set_vel();
    p->check_and_set_motor_state();
    p->check_and_set_gripper_state();

    if( p->get_pulse() > 0 )
    {
      ros::Time currentTime = ros::Time::now();
      ros::Duration pulseInterval = currentTime - lastTime;
      if( pulseInterval.toSec() > p->get_pulse() )
      { 
                                ROS_DEBUG ("sending pulse" );
        p->SendPulse();
        lastTime = currentTime;
      }
    }

    // Hack fix to get around the fact that if no commands are sent to the
    // robot via SendReceive, the driver will never read SIP packets and so
    // never send data back to clients. We need a better way of doing regular
    // checks of the serial port - peek in sendreceive, maybe? Because if there
    // is no data waiting this will sit around waiting until one comes
    p->SendReceive(NULL,true);
    p->updateDiagnostics();
    ros::spinOnce();
  }

  if( p->Shutdown() != 0 )
  {
    ROS_WARN( "p2os shutdown failed... your robot might be heading for the wall?" );
  }
  delete p; //delete pointer

  ROS_INFO( "Quitting... " );
  return 0;
}