mirror of
https://github.com/google/bumble.git
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110 lines
3.7 KiB
Python
110 lines
3.7 KiB
Python
# Copyright 2023 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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import asyncio
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import functools
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from typing import Optional
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from typing_extensions import Self
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from bumble.controller import Controller
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from bumble.device import Connection, Device
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from bumble.hci import Address
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from bumble.host import Host
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from bumble.keys import PairingKeys
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from bumble.link import LocalLink
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from bumble.transport.common import AsyncPipeSink
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# -----------------------------------------------------------------------------
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class Devices:
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connections: list[Optional[Connection]]
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def __init__(self, num_devices: int) -> None:
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self.connections = [None for _ in range(num_devices)]
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self.link = LocalLink()
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addresses = [":".join([f"F{i}"] * 6) for i in range(num_devices)]
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self.controllers = [
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Controller(f'C{i + i}', link=self.link, public_address=addresses[i])
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for i in range(num_devices)
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]
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self.devices = [
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Device(
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address=Address(addresses[i]),
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host=Host(self.controllers[i], AsyncPipeSink(self.controllers[i])),
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)
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for i in range(num_devices)
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]
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for i in range(num_devices):
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self.devices[i].on(
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self.devices[i].EVENT_CONNECTION,
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functools.partial(self.on_connection, i),
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)
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self.paired = [
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asyncio.get_event_loop().create_future() for _ in range(num_devices)
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]
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def on_connection(self, which, connection):
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self.connections[which] = connection
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connection.on('disconnection', lambda code: self.on_disconnection(which))
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def on_disconnection(self, which):
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self.connections[which] = None
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def on_paired(self, which: int, keys: PairingKeys) -> None:
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self.paired[which].set_result(keys)
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async def setup_connection(self) -> None:
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# Start
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for dev in self.devices:
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await dev.power_on()
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# Connect devices
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for dev in self.devices[1:]:
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connection_future = asyncio.get_running_loop().create_future()
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dev.once(dev.EVENT_CONNECTION, connection_future.set_result)
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await dev.start_advertising(advertising_interval_min=1.0)
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await self.devices[0].connect(dev.random_address)
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await connection_future
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def __getitem__(self, index: int) -> Device:
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return self.devices[index]
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# -----------------------------------------------------------------------------
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class TwoDevices(Devices):
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def __init__(self) -> None:
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super().__init__(2)
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@classmethod
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async def create_with_connection(cls: type[Self]) -> Self:
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devices = cls()
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await devices.setup_connection()
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return devices
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# -----------------------------------------------------------------------------
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async def async_barrier():
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# TODO: Remove async barrier - this doesn't always mean what we want.
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for _ in range(3):
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ready = asyncio.get_running_loop().create_future()
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asyncio.get_running_loop().call_soon(ready.set_result, None)
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await ready
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