Visual Servoing Platform  version 3.2.0 under development (2018-08-18)
parallelPort.cpp

Send a data to the parallel port.

/****************************************************************************
*
* This file is part of the ViSP software.
* Copyright (C) 2005 - 2017 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 http://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:
* Example of keybord management.
*
* Author:
* Fabien Spindler
*
*****************************************************************************/
#include <visp3/core/vpConfig.h>
#include <visp3/core/vpDebug.h>
#if defined VISP_HAVE_PARPORT
#include <iostream>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <visp3/io/vpParallelPort.h>
#include <visp3/io/vpParseArgv.h>
// List of allowed command line options
#define GETOPTARGS "d:h"
void usage(const char *name, const char *badparam, unsigned char &data)
{
fprintf(stdout, "\n\
Send a data to the parallel port.\n\
\n\
SYNOPSIS\n\
%s [-d <data>] [-h]\n\
", name);
fprintf(stdout, "\n\
OPTIONS: Default\n\
-d <data> %d\n\
Data to send to the parallel port.\n\
Value should be in [0:255].\n\
\n\
-h\n\
Print the help.\n\n", data);
if (badparam) {
fprintf(stderr, "ERROR: \n");
fprintf(stderr, "\nBad parameter [%s]\n", badparam);
}
}
bool getOptions(int argc, const char **argv, unsigned char &data)
{
const char *optarg;
int c;
int value;
while ((c = vpParseArgv::parse(argc, argv, GETOPTARGS, &optarg)) > 1) {
switch (c) {
case 'd': {
value = atoi(optarg);
if ((value < 0) || (value > 255)) {
usage(argv[0], optarg, data);
std::cerr << "ERROR: " << std::endl;
std::cerr << " Bad value \"-d " << optarg << "\"" << std::endl << std::endl;
return false;
} else {
data = (unsigned char)value;
}
break;
}
case 'h':
usage(argv[0], NULL, data);
return false;
break;
default:
usage(argv[0], optarg, data);
return false;
break;
}
}
if ((c == 1) || (c == -1)) {
// standalone param or error
usage(argv[0], NULL, data);
std::cerr << "ERROR: " << std::endl;
std::cerr << " Bad argument " << optarg << std::endl << std::endl;
return false;
}
return true;
}
int main(int argc, const char **argv)
{
// data to send to the parallel port
unsigned char data = 0;
// Read the command line options
if (getOptions(argc, argv, data) == false) {
exit(-1);
}
try {
vpParallelPort parport;
printf("Send data \"%d\" to the parallel port\n", data);
parport.sendData(data);
} catch (vpParallelPortException &e) {
switch (e.getCode()) {
printf("Can't open the parallel port\n");
break;
printf("Can't close the parallel port\n");
break;
}
} catch (const vpException &e) {
std::cout << "An error occurs: " << e.getMessage() << std::endl;
}
return EXIT_SUCCESS;
}
#else
int main()
{
std::cout << "vpParallelPort class works only on unix..." << std::endl;
return EXIT_SUCCESS;
}
#endif