90 lines
3.7 KiB
Python
90 lines
3.7 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 logging
|
|
import asyncio
|
|
import os
|
|
import sys
|
|
|
|
from bumble import hci, transport
|
|
from bumble.bridge import HCI_Bridge
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# Logging
|
|
# -----------------------------------------------------------------------------
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# Main
|
|
# -----------------------------------------------------------------------------
|
|
async def async_main():
|
|
if len(sys.argv) < 3:
|
|
print('Usage: hci_bridge.py <host-transport-spec> <controller-transport-spec> [command-short-circuit-list]')
|
|
print('example: python hci_bridge.py udp:0.0.0.0:9000,127.0.0.1:9001 serial:/dev/tty.usbmodem0006839912171,1000000 0x3f:0x0070,0x3f:0x0074,0x3f:0x0077,0x3f:0x0078')
|
|
return
|
|
|
|
print('>>> connecting to HCI...')
|
|
async with await transport.open_transport_or_link(sys.argv[1]) as (hci_host_source, hci_host_sink):
|
|
print('>>> connected')
|
|
|
|
print('>>> connecting to HCI...')
|
|
async with await transport.open_transport_or_link(sys.argv[2]) as (hci_controller_source, hci_controller_sink):
|
|
print('>>> connected')
|
|
|
|
command_short_circuits = []
|
|
if len(sys.argv) >= 4:
|
|
for op_code_str in sys.argv[3].split(','):
|
|
if ':' in op_code_str:
|
|
ogf, ocf = op_code_str.split(':')
|
|
command_short_circuits.append(hci.hci_command_op_code(int(ogf, 16), int(ocf, 16)))
|
|
else:
|
|
command_short_circuits.append(int(op_code_str, 16))
|
|
|
|
def host_to_controller_filter(hci_packet):
|
|
if hci_packet.hci_packet_type == hci.HCI_COMMAND_PACKET and hci_packet.op_code in command_short_circuits:
|
|
# Respond with a success response
|
|
logger.debug('short-circuiting packet')
|
|
response = hci.HCI_Command_Complete_Event(
|
|
num_hci_command_packets = 1,
|
|
command_opcode = hci_packet.op_code,
|
|
return_parameters = bytes([hci.HCI_SUCCESS])
|
|
)
|
|
# Return a packet with 'respond to sender' set to True
|
|
return (response.to_bytes(), True)
|
|
|
|
_ = HCI_Bridge(
|
|
hci_host_source,
|
|
hci_host_sink,
|
|
hci_controller_source,
|
|
hci_controller_sink,
|
|
host_to_controller_filter,
|
|
None
|
|
)
|
|
await asyncio.get_running_loop().create_future()
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
def main():
|
|
logging.basicConfig(level = os.environ.get('BUMBLE_LOGLEVEL', 'INFO').upper())
|
|
asyncio.run(async_main())
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
if __name__ == '__main__':
|
|
main()
|