104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
/*
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* Copyright (C) 2018,2020 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "GPSD.h"
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#if defined(USE_GPSD)
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#include <cstdio>
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#include <cassert>
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#include <cstring>
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#include <cmath>
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CGPSD::CGPSD(const std::string& address, const std::string& port, CDMRNetwork* network) :
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m_gpsdAddress(address),
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m_gpsdPort(port),
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m_network(network),
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m_gpsdData(),
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m_idTimer(1000U, 60U)
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{
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assert(!address.empty());
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assert(!port.empty());
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assert(network != NULL);
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}
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CGPSD::~CGPSD()
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{
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}
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bool CGPSD::open()
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{
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int ret = ::gps_open(m_gpsdAddress.c_str(), m_gpsdPort.c_str(), &m_gpsdData);
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if (ret != 0) {
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LogError("Error when opening access to gpsd - %d - %s", errno, ::gps_errstr(errno));
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return false;
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}
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::gps_stream(&m_gpsdData, WATCH_ENABLE | WATCH_JSON, NULL);
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LogMessage("Connected to GPSD");
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m_idTimer.start();
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return true;
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}
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void CGPSD::clock(unsigned int ms)
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{
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m_idTimer.clock(ms);
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if (m_idTimer.hasExpired()) {
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sendReport();
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m_idTimer.start();
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}
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}
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void CGPSD::close()
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{
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::gps_stream(&m_gpsdData, WATCH_DISABLE, NULL);
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::gps_close(&m_gpsdData);
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}
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void CGPSD::sendReport()
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{
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if (!::gps_waiting(&m_gpsdData, 0))
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return;
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#if GPSD_API_MAJOR_VERSION >= 7
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if (::gps_read(&m_gpsdData, NULL, 0) <= 0)
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return;
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#else
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if (::gps_read(&m_gpsdData) <= 0)
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return;
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#endif
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if (m_gpsdData.status != STATUS_FIX)
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return;
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bool latlonSet = (m_gpsdData.set & LATLON_SET) == LATLON_SET;
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if (!latlonSet)
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return;
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float latitude = float(m_gpsdData.fix.latitude);
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float longitude = float(m_gpsdData.fix.longitude);
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m_network->writeHomePosition(latitude, longitude);
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}
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#endif
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