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# 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
import time
import click
from bumble.company_ids import COMPANY_IDENTIFIERS
from bumble.colors import color
from bumble.core import name_or_number
from bumble.hci import (
map_null_terminated_utf8_string,
LeFeatureMask,
HCI_SUCCESS,
HCI_VERSION_NAMES,
LMP_VERSION_NAMES,
HCI_Command,
HCI_Command_Complete_Event,
HCI_Command_Status_Event,
HCI_READ_BUFFER_SIZE_COMMAND,
HCI_Read_Buffer_Size_Command,
HCI_READ_BD_ADDR_COMMAND,
HCI_Read_BD_ADDR_Command,
HCI_READ_LOCAL_NAME_COMMAND,
HCI_Read_Local_Name_Command,
HCI_LE_READ_BUFFER_SIZE_COMMAND,
HCI_LE_Read_Buffer_Size_Command,
HCI_LE_READ_MAXIMUM_DATA_LENGTH_COMMAND,
HCI_LE_Read_Maximum_Data_Length_Command,
HCI_LE_READ_NUMBER_OF_SUPPORTED_ADVERTISING_SETS_COMMAND,
HCI_LE_Read_Number_Of_Supported_Advertising_Sets_Command,
HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH_COMMAND,
HCI_LE_Read_Maximum_Advertising_Data_Length_Command,
HCI_LE_READ_SUGGESTED_DEFAULT_DATA_LENGTH_COMMAND,
HCI_LE_Read_Suggested_Default_Data_Length_Command,
HCI_Read_Local_Version_Information_Command,
)
from bumble.host import Host
from bumble.transport import open_transport_or_link
# -----------------------------------------------------------------------------
def command_succeeded(response):
if isinstance(response, HCI_Command_Status_Event):
return response.status == HCI_SUCCESS
if isinstance(response, HCI_Command_Complete_Event):
return response.return_parameters.status == HCI_SUCCESS
return False
# -----------------------------------------------------------------------------
async def get_classic_info(host: Host) -> None:
if host.supports_command(HCI_READ_BD_ADDR_COMMAND):
response = await host.send_command(HCI_Read_BD_ADDR_Command())
if command_succeeded(response):
print()
print(
color('Classic Address:', 'yellow'),
response.return_parameters.bd_addr.to_string(False),
)
if host.supports_command(HCI_READ_LOCAL_NAME_COMMAND):
response = await host.send_command(HCI_Read_Local_Name_Command())
if command_succeeded(response):
print()
print(
color('Local Name:', 'yellow'),
map_null_terminated_utf8_string(response.return_parameters.local_name),
)
# -----------------------------------------------------------------------------
async def get_le_info(host: Host) -> None:
print()
if host.supports_command(HCI_LE_READ_NUMBER_OF_SUPPORTED_ADVERTISING_SETS_COMMAND):
response = await host.send_command(
HCI_LE_Read_Number_Of_Supported_Advertising_Sets_Command()
)
if command_succeeded(response):
print(
color('LE Number Of Supported Advertising Sets:', 'yellow'),
response.return_parameters.num_supported_advertising_sets,
'\n',
)
if host.supports_command(HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH_COMMAND):
response = await host.send_command(
HCI_LE_Read_Maximum_Advertising_Data_Length_Command()
)
if command_succeeded(response):
print(
color('LE Maximum Advertising Data Length:', 'yellow'),
response.return_parameters.max_advertising_data_length,
'\n',
)
if host.supports_command(HCI_LE_READ_MAXIMUM_DATA_LENGTH_COMMAND):
response = await host.send_command(HCI_LE_Read_Maximum_Data_Length_Command())
if command_succeeded(response):
print(
color('Maximum Data Length:', 'yellow'),
(
f'tx:{response.return_parameters.supported_max_tx_octets}/'
f'{response.return_parameters.supported_max_tx_time}, '
f'rx:{response.return_parameters.supported_max_rx_octets}/'
f'{response.return_parameters.supported_max_rx_time}'
),
'\n',
)
if host.supports_command(HCI_LE_READ_SUGGESTED_DEFAULT_DATA_LENGTH_COMMAND):
response = await host.send_command(
HCI_LE_Read_Suggested_Default_Data_Length_Command()
)
if command_succeeded(response):
print(
color('Suggested Default Data Length:', 'yellow'),
f'{response.return_parameters.suggested_max_tx_octets}/'
f'{response.return_parameters.suggested_max_tx_time}',
'\n',
)
print(color('LE Features:', 'yellow'))
for feature in host.supported_le_features:
print(LeFeatureMask(feature).name)
# -----------------------------------------------------------------------------
async def get_acl_flow_control_info(host: Host) -> None:
print()
if host.supports_command(HCI_READ_BUFFER_SIZE_COMMAND):
response = await host.send_command(
HCI_Read_Buffer_Size_Command(), check_result=True
)
print(
color('ACL Flow Control:', 'yellow'),
f'{response.return_parameters.hc_total_num_acl_data_packets} '
f'packets of size {response.return_parameters.hc_acl_data_packet_length}',
)
if host.supports_command(HCI_LE_READ_BUFFER_SIZE_COMMAND):
response = await host.send_command(
HCI_LE_Read_Buffer_Size_Command(), check_result=True
)
print(
color('LE ACL Flow Control:', 'yellow'),
f'{response.return_parameters.hc_total_num_le_acl_data_packets} '
f'packets of size {response.return_parameters.hc_le_acl_data_packet_length}',
)
# -----------------------------------------------------------------------------
async def async_main(latency_probes, transport):
print('<<< connecting to HCI...')
async with await open_transport_or_link(transport) as (hci_source, hci_sink):
print('<<< connected')
host = Host(hci_source, hci_sink)
await host.reset()
# Measure the latency if requested
latencies = []
if latency_probes:
for _ in range(latency_probes):
start = time.time()
await host.send_command(HCI_Read_Local_Version_Information_Command())
latencies.append(1000 * (time.time() - start))
print(
color('HCI Command Latency:', 'yellow'),
(
f'min={min(latencies):.2f}, '
f'max={max(latencies):.2f}, '
f'average={sum(latencies)/len(latencies):.2f}'
),
'\n',
)
# Print version
print(color('Version:', 'yellow'))
print(
color(' Manufacturer: ', 'green'),
name_or_number(COMPANY_IDENTIFIERS, host.local_version.company_identifier),
)
print(
color(' HCI Version: ', 'green'),
name_or_number(HCI_VERSION_NAMES, host.local_version.hci_version),
)
print(color(' HCI Subversion:', 'green'), host.local_version.hci_subversion)
print(
color(' LMP Version: ', 'green'),
name_or_number(LMP_VERSION_NAMES, host.local_version.lmp_version),
)
print(color(' LMP Subversion:', 'green'), host.local_version.lmp_subversion)
# Get the Classic info
await get_classic_info(host)
# Get the LE info
await get_le_info(host)
# Print the ACL flow control info
await get_acl_flow_control_info(host)
# Print the list of commands supported by the controller
print()
print(color('Supported Commands:', 'yellow'))
for command in host.supported_commands:
print(' ', HCI_Command.command_name(command))
# -----------------------------------------------------------------------------
@click.command()
@click.option(
'--latency-probes',
metavar='N',
type=int,
help='Send N commands to measure HCI transport latency statistics',
)
@click.argument('transport')
def main(latency_probes, transport):
logging.basicConfig(level=os.environ.get('BUMBLE_LOGLEVEL', 'WARNING').upper())
asyncio.run(async_main(latency_probes, transport))
# -----------------------------------------------------------------------------
if __name__ == '__main__':
main()
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