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qgsgpsdetector.cpp
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qgsgpsdetector.cpp
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/***************************************************************************
qgsgpsdetector.cpp - description
--------------------
begin : January 13th, 2009
copyright : (C) 2009 by Juergen E. Fischer
email : jef at norbit dot de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "qgsgpsdetector.h"
#include "qextserialenumerator.h"
#include "qgslogger.h"
#include "qgsgpsconnection.h"
#include "qgsnmeaconnection.h"
#include "qgsgpsdconnection.h"
#ifdef HAVE_QT_MOBILITY_LOCATION
#include "qgsqtlocationconnection.h"
#endif
#include <QStringList>
#include <QFileInfo>
#include <QTimer>
QList< QPair<QString, QString> > QgsGPSDetector::availablePorts()
{
QList< QPair<QString, QString> > devs;
// try local QtLocation first
#ifdef HAVE_QT_MOBILITY_LOCATION
devs << QPair<QString, QString>( "internalGPS", tr( "internal GPS" ) );
#endif
// try local gpsd first
devs << QPair<QString, QString>( "localhost:2947:", tr( "local gpsd" ) );
#ifdef linux
// look for linux serial devices
foreach( QString linuxDev, QStringList() << "/dev/ttyS%1" << "/dev/ttyUSB%1" << "/dev/rfcomm%1" << "/dev/ttyACM%1" )
{
for ( int i = 0; i < 10; ++i )
{
if ( QFileInfo( linuxDev.arg( i ) ).exists() )
{
devs << QPair<QString, QString>( linuxDev.arg( i ), linuxDev.arg( i ) );
}
}
}
#endif
#ifdef __FreeBSD__ // freebsd
// and freebsd devices (untested)
foreach( QString freebsdDev, QStringList() << "/dev/cuaa%1" << "/dev/ucom%1" )
{
for ( int i = 0; i < 10; ++i )
{
if ( QFileInfo( freebsdDev.arg( i ) ).exists() )
{
devs << QPair<QString, QString>( freebsdDev.arg( i ), freebsdDev.arg( i ) );
}
}
}
#endif
#ifdef sparc
// and solaris devices (also untested)
QString solarisDev( "/dev/cua/%1" );
for ( char i = 'a'; i < 'k'; ++i )
{
if ( QFileInfo( solarisDev.arg( i ) ).exists() )
{
devs << QPair<QString, QString>( solarisDev.arg( i ), solarisDev.arg( i ) );
}
}
#endif
#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
QList<QextPortInfo> ports = QextSerialEnumerator::getPorts();
foreach( QextPortInfo port, ports )
{
devs << QPair<QString, QString>( port.portName, port.friendName );
}
#endif
// OpenBSD, NetBSD etc? Anyone?
return devs;
}
QgsGPSDetector::QgsGPSDetector( QString portName )
{
mConn = 0;
mBaudList << BAUD4800 << BAUD9600 << BAUD38400 << BAUD57600 << BAUD115200; //add 57600 for SXBlueII GPS unit
if ( portName.isEmpty() )
{
mPortList = availablePorts();
}
else
{
mPortList << QPair<QString, QString>( portName, portName );
}
mPortIndex = 0;
mBaudIndex = -1;
}
QgsGPSDetector::~QgsGPSDetector()
{
if ( mConn )
delete mConn;
}
void QgsGPSDetector::advance()
{
if ( mConn )
{
delete mConn;
}
mConn = 0;
while ( !mConn )
{
mBaudIndex++;
if ( mBaudIndex == mBaudList.size() )
{
mBaudIndex = 0;
mPortIndex++;
}
if ( mPortIndex == mPortList.size() )
{
emit detectionFailed();
deleteLater();
return;
}
if ( mPortList[ mPortIndex ].first.contains( ":" ) )
{
mBaudIndex = mBaudList.size() - 1;
QStringList gpsParams = mPortList[ mPortIndex ].first.split( ":" );
Q_ASSERT( gpsParams.size() >= 3 );
mConn = new QgsGpsdConnection( gpsParams[0], gpsParams[1].toShort(), gpsParams[2] );
}
else if ( mPortList[ mPortIndex ].first.contains( "internalGPS" ) )
{
#ifdef HAVE_QT_MOBILITY_LOCATION
mConn = new QgsQtLocationConnection();
#else
qWarning( "QT_MOBILITY_LOCATION not found and mPortList matches internalGPS, this should never happen" );
#endif
}
else
{
QextSerialPort *serial = new QextSerialPort( mPortList[ mPortIndex ].first, QextSerialPort::EventDriven );
serial->setBaudRate( mBaudList[ mBaudIndex ] );
serial->setFlowControl( FLOW_OFF );
serial->setParity( PAR_NONE );
serial->setDataBits( DATA_8 );
serial->setStopBits( STOP_1 );
if ( serial->open( QIODevice::ReadOnly | QIODevice::Unbuffered ) )
{
mConn = new QgsNMEAConnection( serial );
}
else
{
delete serial;
}
}
}
connect( mConn, SIGNAL( stateChanged( const QgsGPSInformation & ) ), this, SLOT( detected( const QgsGPSInformation & ) ) );
connect( mConn, SIGNAL( destroyed( QObject * ) ), this, SLOT( connDestroyed( QObject * ) ) );
// leave 2s to pickup a valid string
QTimer::singleShot( 2000, this, SLOT( advance() ) );
}
void QgsGPSDetector::detected( const QgsGPSInformation& info )
{
Q_UNUSED( info );
if ( !mConn )
{
// advance if connection was destroyed
advance();
}
else if ( mConn->status() == QgsGPSConnection::GPSDataReceived )
{
// signal detection
QgsGPSConnection *conn = mConn;
mConn = 0;
emit detected( conn );
deleteLater();
}
}
void QgsGPSDetector::connDestroyed( QObject *obj )
{
if ( obj == mConn )
{
mConn = 0;
}
}