Owl Positioning System: a Wi-Fi-based, infrastructure-centred indoor positioning system. http://owlps.pu-pm.univ-fcomte.fr/
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/*
* This file is part of the Owl Positioning System (OwlPS) project.
* It is subject to the copyright notice and license terms in the
* COPYRIGHT.t2t file found in the top-level directory of this
* distribution and at
* https://code.lm7.fr/mcy/owlps/src/master/COPYRIGHT.t2t
* No part of the OwlPS Project, including this file, may be copied,
* modified, propagated, or distributed except according to the terms
* contained in the COPYRIGHT.t2t file; the COPYRIGHT.t2t file must be
* distributed along with this file, either separately or by replacing
* this notice by the COPYRIGHT.t2t file's contents.
*
***********************************************************************
*
* This is the main source file of OwlPS ResultReader-UDP, a simple
* program demonstrating the use of libowlps-resultreader-udp.
* The received results are printed on the standard output.
*
* This program must be linked against libowlps-resultreader and
* libowlps.
*/
#include "owlps-resultreader.h"
#include <owlps.h>
#include <signal.h>
#include <unistd.h>
int main(void)
{
struct sigaction action ; // Signal handler structure
owl_result *result ;
int sockfd ;
/* Set up signal handlers */
action.sa_flags = 0 ;
sigemptyset(&action.sa_mask) ;
action.sa_handler = owl_sigint_handler ;
sigaction(SIGINT, &action, NULL) ;
action.sa_handler = owl_sigterm_handler ;
sigaction(SIGTERM, &action, NULL) ;
/* Open the socket */
sockfd = owl_create_udp_listening_socket(OWL_DEFAULT_RESULT_PORT) ;
if (sockfd < 0)
return 1 ;
/* Read loop */
owl_run = true ;
while (owl_run)
{
if (! (result = owl_receive_position(sockfd)))
return 1 ;
owl_print_result(result) ;
owl_free_result(result) ;
printf("--------------\n") ;
}
/* Cleaning */
close(sockfd) ;
return 0 ;
}