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1 | /* |
2 | * Copyright 2008, 2010 Niels Kummerfeldt <niels.kummerfeldt@tu-harburg.de> |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by |
6 | * the Free Software Foundation; either version 2 of the License, or |
7 | * (at your option) any later version. |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 | * Boston, MA 02110-1301 USA |
18 | */ |
19 | |
20 | #include "gpsclient.h" |
21 | |
22 | #include <QtCore/QDebug> |
23 | #include <QtCore/QStringList> |
24 | #include <QtCore/QTimer> |
25 | |
26 | GpsClient::GpsClient(QObject *parent) : QObject(parent), |
27 | m_socket(new QTcpSocket(this)) |
28 | { |
29 | connect(m_socket, SIGNAL(connected()), this, SIGNAL(connected())); |
30 | connect(m_socket, SIGNAL(connected()), this, SLOT(conn())); |
31 | connect(m_socket, SIGNAL(disconnected()), this, SIGNAL(disconnected())); |
32 | connect(m_socket, SIGNAL(readyRead()), this, SLOT(readData())); |
33 | } |
34 | |
35 | void GpsClient::connectGps() |
36 | { |
37 | m_socket->connectToHost("127.0.0.1", 2947); |
38 | } |
39 | |
40 | void GpsClient::disconnectGps() |
41 | { |
42 | QTextStream out(m_socket); |
43 | out << "?WATCH={\"enable\":false}\n"; |
44 | m_socket->disconnectFromHost(); |
45 | } |
46 | |
47 | void GpsClient::readData() |
48 | { |
49 | QTextStream in(m_socket); |
50 | QString reply = in.readLine(); |
51 | if (reply.contains("TPV")) { |
52 | reply.remove("{"); |
53 | reply.remove("}"); |
54 | qreal lat = 0; |
55 | qreal lon = 0; |
56 | int mode = 0; |
57 | QStringList entries = reply.split(","); |
58 | foreach (const QString &entry, entries) { |
59 | if (entry.contains("lat")) { |
60 | lat = entry.section(":", 1, 1).toDouble(); |
61 | } else if (entry.contains("lon")) { |
62 | lon = entry.section(":", 1, 1).toDouble(); |
63 | } else if (entry.contains("alt")) { |
64 | qreal alt = entry.section(":", 1, 1).toDouble(); |
65 | emit altitude(alt); |
66 | } else if (entry.contains("track")) { |
67 | qreal track = entry.section(":", 1, 1).toDouble(); |
68 | emit direction(track); |
69 | } else if (entry.contains("speed")) { |
70 | qreal currentSpeed = entry.section(":", 1, 1).toDouble(); |
71 | emit speed(currentSpeed); |
72 | } else if (entry.contains("mode")) { |
73 | // 0: no mode value yet seen |
74 | // 1: no fix |
75 | // 2: 2D |
76 | // 3: 3D |
77 | mode = entry.section(":", 1, 1).toInt(); |
78 | } |
79 | } |
80 | if (mode > 1) { |
81 | emit fixed(true); |
82 | emit position(QPointF(lon, lat)); |
83 | } else { |
84 | emit fixed(false); |
85 | } |
86 | } |
87 | } |
88 | |
89 | void GpsClient::conn() |
90 | { |
91 | QTextStream out(m_socket); |
92 | out << "?WATCH={\"enable\":true,\"json\":true}\n"; |
93 | } |
94 | |
95 |
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