dpptuExample.cpp

Shows how to control the Directed Perception pan-tilt unit using ArDPPTU class directly. This program lets you use the keyboard to control the DPPTU. It uses the same acceleration and slew rates for the pan and tilt axes.

It is also possible to specify the type of PTU in program configuration (in the ARIA robot parameter files or program command-line arguments) instead. For an example of that, see cameraPTZExample.cpp instead.

Commands:

---

UP,DOWN – tilt up/down by one positional increment LEFT,RIGHT – pan left/right by one positional increment SPACE – perform reset calibration I – initialize PTU to default settings <,> – increase/decrease the posIncrement by 0.5 degree +,- – increase/decrease the speed by 1 degree/sec A – awaits the completion of last issued positional command R – change pan/tilt movements to relative or absolute movements Z – move pan and tilt axes to zero 1 – move to stored position 1 (-90, 0) 2 – move to stored position 2 (90, 0) 3 – move to stored position 3 (0, -45) 4 – move to stored position 4 (0, 30) M – Enter or Exit monitor (continuous scan) mode H – Halt all motion S – print current variable values ESC – quit

/*
Adept MobileRobots Robotics Interface for Applications (ARIA)
Copyright (C) 2004, 2005 ActivMedia Robotics LLC
Copyright (C) 2006, 2007, 2008, 2009, 2010 MobileRobots Inc.
Copyright (C) 2011, 2012, 2013 Adept Technology

     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

If you wish to redistribute ARIA under different terms, contact 
Adept MobileRobots for information about a commercial version of ARIA at 
robots@mobilerobots.com or 
Adept MobileRobots, 10 Columbia Drive, Amherst, NH 03031; +1-603-881-7960
*/
#include "Aria.h"

// If defined, use this computer serial port. If not defined, use first robot
// aux. serial port.  Most robots have the DPPTU on COM2 if on Linux and COM4 on
// Windows, if not equipped with other accessories which might require those
// ports (e.g. GPS or Laser).
#define SERIAL_PORT ArUtil::COM4


// Determines type of DPPTU to set internal conversion factors. See enum of
// types in ArDPPTU class for possible values.
//#define PTU_TYPE ArDPPTU::PANTILT_PTUD46

// by how much the < and >  keys change the position command increment in this
// example
#define POS_INC_ADJUSTMENT 1

/*
  This class is the core of this demo, it adds itself to the robot given
  as a user task, and contains key handler callbacks to control the PTU.
*/
class KeyPTU
{
public:
  // constructor
  KeyPTU(ArRobot *robot);
  ~KeyPTU(void);
  
  void up(void);
  void down(void);
  void left(void);
  void right(void);
  void space(void);
  void i(void);
  void plus(void);
  void minus(void);
  void greater(void);
  void less(void);
  void question(void);
  void status(void);
  void a(void);
  void m(void);
  void h(void);
  void r(void);
  void gotoPos(double p, double t);

  // the callback function
  void drive(void);

protected:
  int myPanValPTU;
  int myTiltValPTU;

  int myDesiredPanPos;
  int myDesiredTiltPos;
  int mySlew;
  int myPosIncrement;
  int mySlewIncrement;

  int POS_INCREMENT_ADJUSTMENT;

  bool myMonitor;
  bool myReset;
  bool myInit;
  bool myAbsolute;

  ArFunctorC<KeyPTU> myUpCB;
  ArFunctorC<KeyPTU> myDownCB;
  ArFunctorC<KeyPTU> myLeftCB;
  ArFunctorC<KeyPTU> myRightCB;
  ArFunctorC<KeyPTU> mySpaceCB;
  ArFunctorC<KeyPTU> myICB;
  ArFunctorC<KeyPTU> myPlusCB;
  ArFunctorC<KeyPTU> myMinusCB;
  ArFunctorC<KeyPTU> myGreaterCB;
  ArFunctorC<KeyPTU> myLessCB;
  ArFunctorC<KeyPTU> myQuestionCB;
  ArFunctorC<KeyPTU> mySCB;
  ArFunctorC<KeyPTU> myACB;
  ArFunctorC<KeyPTU> myMCB;
  ArFunctorC<KeyPTU> myHCB;
  ArFunctorC<KeyPTU> myRCB;
  ArFunctor2C<KeyPTU, double, double> myPos0CB;
  ArFunctor2C<KeyPTU, double, double> myPos1CB;
  ArFunctor2C<KeyPTU, double, double> myPos2CB;
  ArFunctor2C<KeyPTU, double, double> myPos3CB;
  ArFunctor2C<KeyPTU, double, double> myPos4CB;


  // the PTU
  ArDPPTU myPTU;
  

  // whether the PTU has been inited or not
  bool myPTUInited;
  // pointer to the robot
  ArRobot *myRobot;
  // callback for the drive function
  ArFunctorC<KeyPTU> myDriveCB;

  ArSerialConnection *mySerialConnection;
};

/*
  Constructor, sets the robot pointer, and some initial values, also note the
  use of constructor chaining on myPTU and myDriveCB.
*/
KeyPTU::KeyPTU(ArRobot *robot) :
  myUpCB(this, &KeyPTU::up),
  myDownCB(this, &KeyPTU::down),
  myLeftCB(this, &KeyPTU::left),
  myRightCB(this, &KeyPTU::right),
  mySpaceCB(this, &KeyPTU::space),
  myICB(this, &KeyPTU::i),
  myPlusCB(this, &KeyPTU::plus),
  myMinusCB(this, &KeyPTU::minus),
  myGreaterCB(this, &KeyPTU::greater),
  myLessCB(this, &KeyPTU::less),
  myQuestionCB(this, &KeyPTU::question),
  mySCB(this, &KeyPTU::status),
  myACB(this, &KeyPTU::a),
  myMCB(this, &KeyPTU::m),
  myHCB(this, &KeyPTU::h),
  myRCB(this, &KeyPTU::r),
  myPos0CB(this, &KeyPTU::gotoPos, 0, 0),
  myPos1CB(this, &KeyPTU::gotoPos, -90.0, 0.0),
  myPos2CB(this, &KeyPTU::gotoPos, 90.0, 0.0),
  myPos3CB(this, &KeyPTU::gotoPos, 0.0, -45.0),
  myPos4CB(this, &KeyPTU::gotoPos, 0.0, 30.0),
  myPTU(robot),
  myDriveCB(this, &KeyPTU::drive),
  mySerialConnection(NULL)
{
#ifdef SERIAL_PORT
  mySerialConnection = new ArSerialConnection;
  ArLog::log(ArLog::Normal, "dpptuExample: connecting to DPPTU over computer serial port %s.", SERIAL_PORT);
  if(mySerialConnection->open(SERIAL_PORT) != 0)
  {
    ArLog::log(ArLog::Terse, "dpptuExample: Error: Could not open computer serial port %s for DPPTU!", SERIAL_PORT);
    Aria::exit(5);
  }
  myPTU.setDeviceConnection(mySerialConnection);
#endif

  // set the robot pointer and add the KeyPTU as user task
  ArKeyHandler *keyHandler;
  myRobot = robot;
  myRobot->addSensorInterpTask("KeyPTU", 50, &myDriveCB);

  if ((keyHandler = Aria::getKeyHandler()) == NULL)
  {
    keyHandler = new ArKeyHandler;
    Aria::setKeyHandler(keyHandler);
    myRobot->attachKeyHandler(keyHandler);
  }

  if (!keyHandler->addKeyHandler(ArKeyHandler::UP, &myUpCB))
    ArLog::log(ArLog::Terse, "The key handler already has a key for up, keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler(ArKeyHandler::DOWN, &myDownCB))
    ArLog::log(ArLog::Terse, "The key handler already has a key for down, keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler(ArKeyHandler::LEFT, &myLeftCB))
    ArLog::log(ArLog::Terse,  
"The key handler already has a key for left, keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler(ArKeyHandler::RIGHT, &myRightCB))
    ArLog::log(ArLog::Terse,  
"The key handler already has a key for right, keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler(ArKeyHandler::SPACE, &mySpaceCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for space, keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('i', &myICB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'i', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('+', &myPlusCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for '+', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('-', &myMinusCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for '-', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('>', &myGreaterCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for '>', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('<', &myLessCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for '<', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('?', &myQuestionCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for '?', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('s', &mySCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'S', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('a', &myACB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'A', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('z', &myPos0CB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'Z', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('m', &myMCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'M', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('h', &myHCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'H', keydrive will not work correctly.");
  if (!keyHandler->addKeyHandler('r', &myRCB))
    ArLog::log(ArLog::Terse,
"The key handler already has a key for 'R', keydrive will not work correctly.");


  if(!keyHandler->addKeyHandler('Z', &myPos0CB))
    ArLog::log(ArLog::Terse, 
"The key handler already has a key for 'Z', keydrive will not work correctly.");

  if(!keyHandler->addKeyHandler('1', &myPos1CB))
    ArLog::log(ArLog::Terse, 
"The key handler already has a key for '1', keydrive will not work correctly.");

  if(!keyHandler->addKeyHandler('2', &myPos2CB))
    ArLog::log(ArLog::Terse, 
"The key handler already has a key for '2', keydrive will not work correctly.");

  if(!keyHandler->addKeyHandler('3', &myPos3CB))
    ArLog::log(ArLog::Terse, 
"The key handler already has a key for '3', keydrive will not work correctly.");

  if(!keyHandler->addKeyHandler('4', &myPos4CB))
    ArLog::log(ArLog::Terse, 
"The key handler already has a key for '4', keydrive will not work correctly.");

  // initialize some variables
  myReset = false;
  myInit = true;
  myDesiredPanPos = 0;
  myDesiredTiltPos = 0;
  myPosIncrement = 1;
  mySlewIncrement = 1;
  myPTUInited = false;
  myMonitor = false;

}

KeyPTU::~KeyPTU() 
{
  if(mySerialConnection)
  {
    myPTU.setDeviceConnection(NULL);
    delete mySerialConnection;
  }
}



void KeyPTU::left(void)
{
  myDesiredPanPos += myPosIncrement;

  if (myDesiredPanPos > myPTU.getMaxPosPan())
    myDesiredPanPos = myPTU.getMaxPosPan();
}

void KeyPTU::right(void)
{
  myDesiredPanPos -= myPosIncrement;

  if (myDesiredPanPos < myPTU.getMaxNegPan())
    myDesiredPanPos = myPTU.getMaxNegPan();
}

void KeyPTU::up(void)
{
  myDesiredTiltPos += myPosIncrement;
 
  if (myDesiredTiltPos > myPTU.getMaxPosTilt())
    myDesiredTiltPos = myPTU.getMaxPosTilt();
}

void KeyPTU::down(void)
{
  myDesiredTiltPos -= myPosIncrement;

  if (myDesiredTiltPos < myPTU.getMaxNegTilt())
    myDesiredTiltPos = myPTU.getMaxNegTilt();
}

void KeyPTU::space(void)
{
  myReset = true;
}

void KeyPTU::i(void)
{
  myInit = true;
}

void KeyPTU::plus(void)
{
  mySlew += mySlewIncrement;

  if (mySlew > myPTU.getMaxPanSlew())
    mySlew = myPTU.getMaxPanSlew();

  status();
}

void KeyPTU::minus(void)
{
  mySlew -= mySlewIncrement;

  if (mySlew < myPTU.getMinPanSlew())
    mySlew = myPTU.getMinPanSlew();

  status();
}

void KeyPTU::greater(void)
{
  myPosIncrement += POS_INCREMENT_ADJUSTMENT;
  
  if (myPosIncrement > myPTU.getMaxPosPan())
    myPosIncrement = myPTU.getMaxPosPan();

  status();
}

void KeyPTU::less(void)
{
  myPosIncrement -= POS_INCREMENT_ADJUSTMENT;

  if (myPosIncrement < 0)
    myPosIncrement = 0;

  status();
}

void KeyPTU::a(void)
{
  myPTU.awaitExec();   
  ArLog::log(ArLog::Normal, "AwaitExecution command sent");
}

void KeyPTU::gotoPos(double p, double t)
{
  myDesiredPanPos = p;
  myDesiredTiltPos = t;
  status();
}

void KeyPTU::question(void)
{
  ArLog::log(ArLog::Normal, "\r\nCommands:\r\n_________________\r\n");
  ArLog::log(ArLog::Normal, "UP,DOWN    -- tilt up/down by one positional increment");
  ArLog::log(ArLog::Normal, "LEFT,RIGHT -- pan left/right by one positional increment");
  ArLog::log(ArLog::Normal, "SPACE      -- perform reset calibration");
  ArLog::log(ArLog::Normal, "I          -- initialize PTU to default settings");
  ArLog::log(ArLog::Normal, "<,>        -- increase/decrease the posIncrement by %f degree(s)", POS_INC_ADJUSTMENT);
  ArLog::log(ArLog::Normal, "+,-        -- increase/decrease the speed by 1 degree/sec");
  ArLog::log(ArLog::Normal, "A          -- awaits the completion of last issued positional command");
  ArLog::log(ArLog::Normal, "R          -- change pan/tilt movements to relative or absolute movements");
  ArLog::log(ArLog::Normal, "Z          -- move pan and tilt axes to zero");
  ArLog::log(ArLog::Normal, "1          -- move to stored position 1 (-90, 0)");
  ArLog::log(ArLog::Normal, "2          -- move to stored position 2 (90, 0)");
  ArLog::log(ArLog::Normal, "3          -- move to stored position 3 (0, -45)");
  ArLog::log(ArLog::Normal, "4          -- move to stored position 4 (0, 30)");
  ArLog::log(ArLog::Normal, "M          -- Enter or Exit monitor (continuous scan) mode");
  ArLog::log(ArLog::Normal, "H          -- Halt all motion");
  ArLog::log(ArLog::Normal, "S          -- print current variable values");
  ArLog::log(ArLog::Normal, "ESC        -- exit program");
  ArLog::log(ArLog::Normal, "\r\n");
}

void KeyPTU::status(void)
{
  ArLog::log(ArLog::Normal, "\r\nStatus:\r\n_________________\r\n");
  ArLog::log(ArLog::Normal, "Last Pan Command      = %.1f deg", myPTU.getLastPanRequest());
  ArLog::log(ArLog::Normal, "Last Tilt Command      = %.1f deg", myPTU.getLastTiltRequest());
  ArLog::log(ArLog::Normal, "Current Pan Position  = %.1f deg", myPTU.getPan());
  ArLog::log(ArLog::Normal, "Current Tilt Position = %.1f deg", myPTU.getTilt());
  ArLog::log(ArLog::Normal, "Pan Slew Rate         = %d deg/sec", myPTU.getPanSlew());
  ArLog::log(ArLog::Normal, "Tilt Slew Rate        = %d deg/sec", myPTU.getTiltSlew());
  ArLog::log(ArLog::Normal, "Position Increment    = %d deg", myPosIncrement);
  if (myAbsolute)
    ArLog::log(ArLog::Normal, "Positional-movements using absolute commands");
  else
    ArLog::log(ArLog::Normal, "Positional-movements using relative commands");
  ArLog::log(ArLog::Normal, "\r\n");
}

void KeyPTU::m(void)
{
  if (!myMonitor)
  {
    ArLog::log(ArLog::Normal, "Entering Monitor mode - hit 'M' to disable");
    myMonitor = true;
    myPTU.initMon(-60,60,30,-30);
  }
  else
  {
    myPTU.blank();  //Blank packet exits monitor mode
    myMonitor = false;
  }
}

void KeyPTU::h(void)
{
  myPTU.haltAll();
}

void KeyPTU::r(void)
{
  if (!myAbsolute)
  {
    myAbsolute = true;
  }
  else
  {
    myAbsolute = false;
  }
  status();
}


// the important function
void KeyPTU::drive(void)
{

  // if the PTU isn't initialized, initialize it here... it has to be 
  // done here instead of above because it needs to be done when the 
  // robot is connected
  if (!myPTUInited && myRobot->isConnected())
  {
    ArLog::log(ArLog::Normal, "Initializing ArDPPTU...");
    myPTU.init();
    ArLog::log(ArLog::Normal, "Resetting PTU and performing self-calibration...");
    myPTU.resetCalib();
    myPTU.awaitExec(); // DPPTU will wait for self-calibration to end before executing the following commands (though they will still be sent)
    mySlew = myPTU.getPanSlew(); //uses only pan slew rate
    myPTU.awaitExec();
    myPTUInited = true;
    myInit = false;
    myAbsolute = true;
  }

  if (myInit == true)  // User hit initialization key
  {
    ArLog::log(ArLog::Normal, "Initializing PTU...");
    myPTU.init();
    myInit = false;
    myDesiredPanPos = myPTU.getPan();
    myDesiredTiltPos = myPTU.getTilt();
    mySlew = myPTU.getPanSlew(); //uses only pan slew rate
    myReset = false;
  }

  if (myReset == true) // User hit reset key
  {
    ArLog::log(ArLog::Normal, "Resetting PTU and performing self-calibration...");
    myPTU.resetCalib();
    myPTU.awaitExec();
    myDesiredPanPos = myPTU.getPan();
    myDesiredTiltPos = myPTU.getTilt();
    myReset = false;
  }
  else   // User did nothing, or hit a key that changed myDesiredPanPos, myDesiredTiltPos, or mySlew (so request PTU to move if those changed since last request)
  {

    // Some PTUs can determine their current position (with encoders, etc) and return that.
    // canGetRealPanTilt() will return true in this case, and getPan() and
    // getTilt() will return those received values.  Otherwise, getPan() and
    // getTilt() return the last commanded values.  getLastPanRequest() and
    // getLastTiltRequest() will always return the last commanded values sent by
    // ArDPPTU (so in the case that canGetRealPanTilt() is false, getPan() and
    // getTilt() return the same pair of values as getLastPanRequest() and
    // getLastTiltRequest().  ArDPPTU::canGetRealPanTilt() is initialally false,
    // but once the first set of pan and tilt positions is read back from the
    // PTU device, it becomes true.  
    if(myPTU.canGetRealPanTilt())
      printf("Position (%.1f deg, %.1f deg)     [Incr. %d deg]     Press ? for help  \r", myPTU.getPan(), myPTU.getTilt(), myPosIncrement);
    else
      printf("Requested (%.1f deg, %.1f deg)     [Incr. %d deg]     Press ? for help  \r", myPTU.getPan(), myPTU.getTilt(), myPosIncrement);

    if (myDesiredPanPos != myPTU.getLastPanRequest())
    {
      if (myAbsolute)
        myPTU.pan(myDesiredPanPos);
      else
        myPTU.panRel(myDesiredPanPos - myPTU.getPan());
    }

    if (myDesiredTiltPos != myPTU.getLastTiltRequest())
    {
      if (myAbsolute)
        myPTU.tilt(myDesiredTiltPos);
      else
        myPTU.tiltRel(myDesiredTiltPos - myPTU.getTilt());
    }

    if (mySlew != myPTU.getPanSlew())
    {
      myPTU.panSlew(mySlew);
      myPTU.tiltSlew(mySlew);
    }

  }

}

int main(int argc, char **argv) 
{
    Aria::init();
    ArArgumentParser parser(&argc, argv);
    parser.loadDefaultArguments();
    ArRobot robot;
    ArRobotConnector robotConnector(&parser, &robot);
    if(!robotConnector.connectRobot())
    {
      ArLog::log(ArLog::Terse, "dpptuExample: Could not connect to the robot.");
      if(parser.checkHelpAndWarnUnparsed())
      {
          Aria::logOptions();
          Aria::exit(1);
      }
    }
    if (!Aria::parseArgs() || !parser.checkHelpAndWarnUnparsed())
    {
      Aria::logOptions();
      Aria::exit(1);
    }
    ArLog::log(ArLog::Normal, "dpptuExample: Connected to robot.");

  robot.runAsync(true);

  // an object for keyboard control, class defined above, this also adds itself as a user task
  KeyPTU ptu(&robot);


  // turn off the sonar
  robot.comInt(ArCommands::SONAR, 0);

  printf("Press '?' for available commands\r\n");

  // run, if we lose connection to the robot, exit
  robot.waitForRunExit();

  Aria::exit(0);
}