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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
/***************************************************************************
**
** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qlowenergycharacteristic.h"
#include "qlowenergyserviceprivate_p.h"
#include <QHash>
QT_BEGIN_NAMESPACE
/*!
\class QLowEnergyCharacteristic
\inmodule QtBluetooth
\brief The QLowEnergyCharacteristic class stores information about a Bluetooth
Low Energy service characteristic.
\since 5.4
QLowEnergyCharacteristic provides information about a Bluetooth Low Energy
service characteristic's name, UUID, value, permissions, handle and descriptors.
To get the full characteristic specification and information it is necessary to
connect to the service using QLowEnergyServiceInfo and QLowEnergyController classes.
Some characteristics can contain none, one or more descriptors.
*/
/*!
\enum QLowEnergyCharacteristic::PropertyType
This enum describes the properties of a characteristic.
\value Unknown The type is not known.
\value Broadcasting Allow for the broadcasting of Generic Attributes (GATT) characteristic values.
\value Read Allow the characteristic values to be read.
\value WriteNoResponse Allow characteristic values without responses to be written.
\value Write Allow for characteristic values to be written.
\value Notify Permits notification of characteristic values.
\value Indicate Permits indications of characteristic values.
\value WriteSigned Permits signed writes of the GATT characteristic values.
\value ExtendedProperty Additional characteristic properties are defined in the characteristic
extended properties descriptor.
\sa properties()
*/
struct QLowEnergyCharacteristicPrivate
{
QLowEnergyHandle handle;
};
/*!
Construct a new QLowEnergyCharacteristic.
*/
QLowEnergyCharacteristic::QLowEnergyCharacteristic():
d_ptr(0), data(0)
{
}
/*!
Construct a new QLowEnergyCharacteristic that is a copy of \a other.
The two copies continue to share the same underlying data which does not detach
upon write.
*/
QLowEnergyCharacteristic::QLowEnergyCharacteristic(const QLowEnergyCharacteristic &other):
d_ptr(other.d_ptr)
{
if (!other.data) {
if (data) {
delete data;
data = 0;
}
} else {
if (!data)
data = new QLowEnergyCharacteristicPrivate();
data->handle = other.data->handle;
}
}
/*!
\internal
*/
QLowEnergyCharacteristic::QLowEnergyCharacteristic(
QSharedPointer<QLowEnergyServicePrivate> p, QLowEnergyHandle handle):
d_ptr(p)
{
data = new QLowEnergyCharacteristicPrivate();
data->handle = handle;
}
/*!
Destroys the QLowEnergyCharacteristic object.
*/
QLowEnergyCharacteristic::~QLowEnergyCharacteristic()
{
delete data;
}
/*!
Returns the name of the gatt characteristic type.
*/
QString QLowEnergyCharacteristic::name() const
{
return QBluetoothUuid::characteristicToString(
static_cast<QBluetoothUuid::CharacteristicType>(uuid().toUInt16()));
}
/*!
Returns the UUID of the gatt characteristic.
*/
QBluetoothUuid QLowEnergyCharacteristic::uuid() const
{
if (d_ptr.isNull() || !data
|| !d_ptr->characteristicList.contains(data->handle))
return QBluetoothUuid();
return d_ptr->characteristicList[data->handle].uuid;
}
/*!
Returns the properties of the gatt characteristic.
*/
QLowEnergyCharacteristic::PropertyTypes QLowEnergyCharacteristic::properties() const
{
if (d_ptr.isNull() || !data
|| !d_ptr->characteristicList.contains(data->handle))
return QLowEnergyCharacteristic::Unknown;
return d_ptr->characteristicList[data->handle].properties;
}
/*!
Returns value of the gatt characteristic.
*/
QByteArray QLowEnergyCharacteristic::value() const
{
if (d_ptr.isNull() || !data
|| !d_ptr->characteristicList.contains(data->handle))
return QByteArray();
return d_ptr->characteristicList[data->handle].value;
}
/*!
Returns the handle of the GATT characteristic's value attribute;
otherwise returns \c 0.
*/
QLowEnergyHandle QLowEnergyCharacteristic::handle() const
{
if (d_ptr.isNull() || !data
|| !d_ptr->characteristicList.contains(data->handle))
return 0;
return d_ptr->characteristicList[data->handle].valueHandle;
}
/*!
Sets the value \a value of the characteristic. This only caches the value. To write
a value directly to the device QLowEnergyController class must be used.
\sa QLowEnergyController::writeCharacteristic()
*/
void QLowEnergyCharacteristic::setValue(const QByteArray &value)
{
//d_ptr->value = value;
}
/*!
Makes a copy of \a other and assigns it to this QLowEnergyCharacteristic object.
The two copies continue to share the same service and registration details.
*/
QLowEnergyCharacteristic &QLowEnergyCharacteristic::operator=(const QLowEnergyCharacteristic &other)
{
d_ptr = other.d_ptr;
if (!other.data) {
if (data) {
delete data;
data = 0;
}
} else {
if (!data)
data = new QLowEnergyCharacteristicPrivate();
data->handle = other.data->handle;
}
return *this;
}
/*!
Returns true if the QLowEnergyCharacteristic object is valid, otherwise returns false.
If it returns \c false, it means that this instance is not associated to any service
or the associated service is no longer valid.
*/
bool QLowEnergyCharacteristic::isValid() const
{
if (d_ptr.isNull() || !data)
return false;
if (d_ptr->state == QLowEnergyService::InvalidService)
return false;
return true;
}
/*!
Returns the list of characteristic descriptors.
*/
QList<QLowEnergyDescriptorInfo> QLowEnergyCharacteristic::descriptors() const
{
// TODO QLowEnergyCharacteristic::descriptors()
QList<QLowEnergyDescriptorInfo> result;
return result;
}
QT_END_NAMESPACE
|
