115 lines
4.0 KiB
Python
115 lines
4.0 KiB
Python
# 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 asyncio
|
|
import os
|
|
import logging
|
|
from colors import color
|
|
|
|
from bumble.core import ProtocolError
|
|
from bumble.controller import Controller
|
|
from bumble.device import Device, Peer
|
|
from bumble.host import Host
|
|
from bumble.link import LocalLink
|
|
from bumble.gatt import (
|
|
Service,
|
|
Characteristic,
|
|
Descriptor,
|
|
show_services,
|
|
GATT_CHARACTERISTIC_USER_DESCRIPTION_DESCRIPTOR,
|
|
GATT_MANUFACTURER_NAME_STRING_CHARACTERISTIC,
|
|
GATT_DEVICE_INFORMATION_SERVICE
|
|
)
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
class ServerListener(Device.Listener):
|
|
def on_connection(self, connection):
|
|
print(f'### Server: connected to {connection}')
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
async def main():
|
|
# Create a local link
|
|
link = LocalLink()
|
|
|
|
# Setup a stack for the client
|
|
client_controller = Controller("client controller", link = link)
|
|
client_host = Host()
|
|
client_host.controller = client_controller
|
|
client_device = Device("client", address = 'F0:F1:F2:F3:F4:F5', host = client_host)
|
|
await client_device.power_on()
|
|
|
|
# Setup a stack for the server
|
|
server_controller = Controller("server controller", link = link)
|
|
server_host = Host()
|
|
server_host.controller = server_controller
|
|
server_device = Device("server", address = 'F6:F7:F8:F9:FA:FB', host = server_host)
|
|
server_device.listener = ServerListener()
|
|
await server_device.power_on()
|
|
|
|
# Add a few entries to the device's GATT server
|
|
descriptor = Descriptor(GATT_CHARACTERISTIC_USER_DESCRIPTION_DESCRIPTOR, Descriptor.READABLE, 'My Description')
|
|
manufacturer_name_characteristic = Characteristic(
|
|
GATT_MANUFACTURER_NAME_STRING_CHARACTERISTIC,
|
|
Characteristic.READ,
|
|
Characteristic.READABLE,
|
|
"Fitbit",
|
|
[descriptor]
|
|
)
|
|
device_info_service = Service(GATT_DEVICE_INFORMATION_SERVICE, [
|
|
manufacturer_name_characteristic
|
|
])
|
|
server_device.add_service(device_info_service)
|
|
|
|
# Connect the client to the server
|
|
connection = await client_device.connect(server_device.random_address)
|
|
print(f'=== Client: connected to {connection}')
|
|
|
|
# Discover all services
|
|
print('=== Discovering services')
|
|
peer = Peer(connection)
|
|
await peer.discover_services()
|
|
for service in peer.services:
|
|
await service.discover_characteristics()
|
|
for characteristic in service.characteristics:
|
|
await characteristic.discover_descriptors()
|
|
|
|
print('=== Services discovered')
|
|
show_services(peer.services)
|
|
|
|
# Discover all attributes
|
|
print('=== Discovering attributes')
|
|
attributes = await peer.discover_attributes()
|
|
for attribute in attributes:
|
|
print(attribute)
|
|
print('=== Attributes discovered')
|
|
|
|
# Read all attributes
|
|
for attribute in attributes:
|
|
try:
|
|
value = await attribute.read_value()
|
|
print(color(f'0x{attribute.handle:04X} = {value.hex()}', 'green'))
|
|
except ProtocolError as error:
|
|
print(color(f'cannot read {attribute.handle:04X}:', 'red'), error)
|
|
|
|
await asyncio.get_running_loop().create_future()
|
|
|
|
# -----------------------------------------------------------------------------
|
|
logging.basicConfig(level = os.environ.get('BUMBLE_LOGLEVEL', 'DEBUG').upper())
|
|
asyncio.run(main())
|