mirror of
https://github.com/google/bumble.git
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106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# Copyright 2021-2025 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# -----------------------------------------------------------------------------
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# Imports
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# -----------------------------------------------------------------------------
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from __future__ import annotations
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import argparse
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import asyncio
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import sys
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import bumble.logging
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from bumble import core, l2cap
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from bumble.device import Device
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from bumble.transport import open_transport
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# -----------------------------------------------------------------------------
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async def main(
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config_file: str, transport: str, mode: int, peer_address: str, psm: int
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) -> None:
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print('<<< connecting to HCI...')
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async with await open_transport(transport) as hci_transport:
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print('<<< connected')
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# Create a device
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device = Device.from_config_file_with_hci(
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config_file, hci_transport.source, hci_transport.sink
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)
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device.classic_enabled = True
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device.l2cap_channel_manager.extended_features.add(
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l2cap.L2CAP_Information_Request.ExtendedFeatures.ENHANCED_RETRANSMISSION_MODE
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)
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device.l2cap_channel_manager.extended_features.add(
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l2cap.L2CAP_Information_Request.ExtendedFeatures.FCS_OPTION
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)
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# Start the controller
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await device.power_on()
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# Start being discoverable and connectable
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await device.set_discoverable(True)
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await device.set_connectable(True)
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active_channel: l2cap.ClassicChannel | None = None
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def on_connection(channel: l2cap.ClassicChannel):
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def on_sdu(sdu: bytes):
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print(f'<<< {sdu.decode()}')
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channel.sink = on_sdu
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nonlocal active_channel
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active_channel = channel
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server = device.create_l2cap_server(
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spec=l2cap.ClassicChannelSpec(
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mode=l2cap.TransmissionMode(mode), psm=psm if psm else None
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),
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handler=on_connection,
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)
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print(f'Listen L2CAP on channel {server.psm}')
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if peer_address:
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connection = await device.connect(
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peer_address, transport=core.PhysicalTransport.BR_EDR
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)
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channel = await connection.create_l2cap_channel(
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spec=l2cap.ClassicChannelSpec(
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mode=l2cap.TransmissionMode(mode), psm=psm
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)
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)
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active_channel = channel
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while sdu := await asyncio.to_thread(lambda: input('>>> ')):
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if active_channel:
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active_channel.write(sdu.encode())
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await hci_transport.source.terminated
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# -----------------------------------------------------------------------------
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bumble.logging.setup_basic_logging('INFO')
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parser = argparse.ArgumentParser()
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parser.add_argument('config')
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parser.add_argument('transport')
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parser.add_argument('-p', '--peer_address', default='')
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parser.add_argument(
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'-m', '--mode', default=l2cap.TransmissionMode.ENHANCED_RETRANSMISSION
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)
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parser.add_argument('--psm', default=0)
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args = parser.parse_args(sys.argv[1:])
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asyncio.run(main(args.config, args.transport, args.mode, args.peer_address, args.psm))
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