blob: 2b6b3ce6e31b7a29ce340b3bf2fd512e9ab501d8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtPositioning module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qgeopositioninfosourcefactory_serialnmea.h"
#include <QtPositioning/qnmeapositioninfosource.h>
#include <QtSerialPort/qserialport.h>
#include <QtSerialPort/qserialportinfo.h>
#include <QtCore/qloggingcategory.h>
Q_LOGGING_CATEGORY(lcSerial, "qt.positioning.serialnmea")
class NmeaSource : public QNmeaPositionInfoSource
{
public:
NmeaSource(QObject *parent);
bool isValid() const { return !m_port.isNull(); }
private:
QScopedPointer<QSerialPort> m_port;
};
NmeaSource::NmeaSource(QObject *parent)
: QNmeaPositionInfoSource(RealTimeMode, parent),
m_port(new QSerialPort)
{
QByteArray requestedPort = qgetenv("QT_NMEA_SERIAL_PORT");
if (requestedPort.isEmpty()) {
const QList<QSerialPortInfo> ports = QSerialPortInfo::availablePorts();
qCDebug(lcSerial) << "Found" << ports.count() << "serial ports";
if (ports.isEmpty()) {
qWarning("serialnmea: No serial ports found");
m_port.reset();
return;
}
// Try to find a well-known device.
QString portName;
for (int i = 0; i < ports.count(); ++i) {
const QString candidatePortName = ports[i].portName();
bool acceptThis = false;
// GlobalSat (BU-353S4 and probably others)
acceptThis |= ports[i].hasVendorIdentifier() && ports[i].vendorIdentifier() == 0x67b;
if (acceptThis) {
portName = candidatePortName;
break;
}
}
if (portName.isEmpty()) {
qWarning("serialnmea: No known GPS device found. Specify the COM port via QT_NMEA_SERIAL_PORT.");
m_port.reset();
return;
}
m_port->setPortName(portName);
} else {
m_port->setPortName(QString::fromUtf8(requestedPort));
}
m_port->setBaudRate(4800);
qCDebug(lcSerial) << "Opening serial port" << m_port->portName();
if (!m_port->open(QIODevice::ReadOnly)) {
qWarning("serialnmea: Failed to open %s", qPrintable(m_port->portName()));
m_port.reset();
return;
}
setDevice(m_port.data());
qCDebug(lcSerial) << "Opened successfully";
}
QGeoPositionInfoSource *QGeoPositionInfoSourceFactorySerialNmea::positionInfoSource(QObject *parent)
{
QScopedPointer<NmeaSource> src(new NmeaSource(parent));
return src->isValid() ? src.take() : Q_NULLPTR;
}
QGeoSatelliteInfoSource *QGeoPositionInfoSourceFactorySerialNmea::satelliteInfoSource(QObject *parent)
{
Q_UNUSED(parent);
return Q_NULLPTR;
}
QGeoAreaMonitorSource *QGeoPositionInfoSourceFactorySerialNmea::areaMonitor(QObject *parent)
{
Q_UNUSED(parent);
return Q_NULLPTR;
}
|
