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
|
# Copyright 2021-2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# -----------------------------------------------------------------------------
# Imports
# -----------------------------------------------------------------------------
import logging
import struct
from bumble.gatt import (
GATT_APPEARANCE_CHARACTERISTIC,
GATT_DEVICE_NAME_CHARACTERISTIC,
GATT_GENERIC_ACCESS_SERVICE,
Characteristic,
Service,
)
# -----------------------------------------------------------------------------
# Logging
# -----------------------------------------------------------------------------
logger = logging.getLogger(__name__)
# -----------------------------------------------------------------------------
# Classes
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
class GenericAccessService(Service):
def __init__(self, device_name, appearance=(0, 0)):
device_name_characteristic = Characteristic(
GATT_DEVICE_NAME_CHARACTERISTIC,
Characteristic.Properties.READ,
Characteristic.READABLE,
device_name.encode('utf-8')[:248],
)
appearance_characteristic = Characteristic(
GATT_APPEARANCE_CHARACTERISTIC,
Characteristic.Properties.READ,
Characteristic.READABLE,
struct.pack('<H', (appearance[0] << 6) | appearance[1]),
)
super().__init__(
GATT_GENERIC_ACCESS_SERVICE,
[device_name_characteristic, appearance_characteristic],
)
|
