/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2023 by Inria. All rights reserved.
 *
 * This software 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.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See https://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Parallel port management.
 */

#ifndef vpParallelPort_h
#define vpParallelPort_h

/*!
  \file vpParallelPort.h
  \brief Parallel port management under unix.
*/

#include <visp3/core/vpConfig.h>

#ifdef VISP_HAVE_PARPORT

#include <errno.h>
#include <iostream>
#include <linux/parport.h>
#include <linux/ppdev.h>
#include <stdio.h>
#include <string>

#include <visp3/io/vpParallelPortException.h>

/*!

  \class vpParallelPort
  \ingroup group_io_parallel_port
  \brief Parallel port management under unix.

  The code below shows how to send a data over the parallel port.
  \code
#include <visp3/io/vpParallelPort.h>

int main()
{
#ifdef VISP_HAVE_PARPORT
  vpParallelPort parport;

  unsigned char data = 5; // 0x00000101 = 5 in decimal
  parport.sendData(data); // D0 and D2 are set to logical level 1
#endif
}
  \endcode

*/
class VISP_EXPORT vpParallelPort
{

public:
  vpParallelPort();
  virtual ~vpParallelPort();

  void sendData(unsigned char &data);
  unsigned char getData();

private:
  void open();
  void close();

private:
  int fd; // parallel port descriptor
  std::string device;
};

#endif

#endif
