search

hbldh / bleak

A cross platform Bluetooth Low Energy Client for Python using asyncio
MIT License
1.79k stars 296 forks source link

Custom service not found #1079

Open profff opened 2 years ago

profff commented 2 years ago

bleak version: bleak 0.18.1 bleak-winrt 1.2.0 Python version: Python 3.10.6 Operating System: Windows 10 Professionnal x64

Description

when listing service to found the one I need it don get listed but service exists anyway as it's well seen by any android thrd party BLE tool (NRFconnect)

What I Did

here's the source code we assume dev is device object returned by bleakscanner

print("connecting to : ",dev)
async def main(dev):
    async with BleakClient(dev.address) as client:
        print("Services:")
        for service in client.services:
            print(service)
            for char in service.characteristics:
                print("  ",char)
asyncio.run(main(dev))

here the result 

C:\src\btserial> python .\btserial.py
connecting to :  58:BF:09:30:2F:FE: INF-BS
Services:
00001800-0000-1000-8000-00805f9b34fb (Handle: 1): Generic Access Profile
   00002a00-0000-1000-8000-00805f9b34fb (Handle: 2): Device Name
   00002a01-0000-1000-8000-00805f9b34fb (Handle: 4): Appearance
   00002a04-0000-1000-8000-00805f9b34fb (Handle: 6): Peripheral Preferred Connection Parameters
   00002aa6-0000-1000-8000-00805f9b34fb (Handle: 8): Central Address Resolution
   00002ac9-0000-1000-8000-00805f9b34fb (Handle: 10): Resolvable Private Address Only
00001801-0000-1000-8000-00805f9b34fb (Handle: 12): Generic Attribute Profile
0000180a-0000-1000-8000-00805f9b34fb (Handle: 13): Device Information
   00002a23-0000-1000-8000-00805f9b34fb (Handle: 14): System ID
   00002a24-0000-1000-8000-00805f9b34fb (Handle: 16): Model Number String
   00002a25-0000-1000-8000-00805f9b34fb (Handle: 18): Serial Number String
   00002a26-0000-1000-8000-00805f9b34fb (Handle: 20): Firmware Revision String
   00002a27-0000-1000-8000-00805f9b34fb (Handle: 22): Hardware Revision String
   00002a28-0000-1000-8000-00805f9b34fb (Handle: 24): Software Revision String
   00002a29-0000-1000-8000-00805f9b34fb (Handle: 26): Manufacturer Name String
   00002a2a-0000-1000-8000-00805f9b34fb (Handle: 28): IEEE 11073-20601 Regulatory Cert. Data List
   00002a50-0000-1000-8000-00805f9b34fb (Handle: 30): PnP ID
00001809-0000-1000-8000-00805f9b34fb (Handle: 32): Health Thermometer
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 33): PCB Temperature probe
   00002b18-0000-1000-8000-00805f9b34fb (Handle: 36): Ref Voltage
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 39): Sensor Raw OUT
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 42): Sensor int temp
0000180f-0000-1000-8000-00805f9b34fb (Handle: 45): Battery Service
   00002a19-0000-1000-8000-00805f9b34fb (Handle: 46): state of chargeCurrent draw
   00002b18-0000-1000-8000-00805f9b34fb (Handle: 49): Voltage
   00002aee-0000-1000-8000-00805f9b34fb (Handle: 52): Current draw
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 55): Temperature
00000001-0000-1000-8000-00805f9b34fb (Handle: 58): SDP
   00000002-0000-1000-8000-00805f9b34fb (Handle: 59): Vendor specific
   00000003-0000-1000-8000-00805f9b34fb (Handle: 62): RFCOMM

and here you can see screen shot of NRF Connect to same dev

Screenshot_20221013-163908

Screenshot_20221013-163915

as you can see at python script name I try to do something similar to Nordic UART Service and I whant to use bleek to make a small terminal app on pc

Logs

I still have isue with BTP :(

profff commented 2 years ago

same issue with a 128 bit UUID

profff commented 2 years ago 
connecting to :  58:BF:09:30:2F:FE: INF-BS
2022-10-13 17:09:55,187 bleak.backends.winrt.scanner DEBUG: Received 0F:80:B9:43:DD:3D: Unknown.
2022-10-13 17:09:55,200 bleak.backends.winrt.scanner DEBUG: Received 58:BF:09:30:2F:FE: INF-BS.
2022-10-13 17:09:55,202 bleak.backends.winrt.scanner DEBUG: 2 devices found. Watcher status: 3.
2022-10-13 17:09:55,202 bleak.backends.winrt.client DEBUG: Connecting to BLE device @ 58:BF:09:30:2F:FE
2022-10-13 17:09:56,149 bleak.backends.winrt.client DEBUG: session_status_changed_event_handler: id: <_bleak_winrt_Windows_Devices_Bluetooth.BluetoothDeviceId object at 0x0000023FB3B469B0>, error: BluetoothError.SUCCESS, status: GattSessionStatus.ACTIVE
2022-10-13 17:09:56,149 bleak.backends.winrt.client DEBUG: Get Services...
2022-10-13 17:09:56,352 bleak.backends.winrt.client INFO: Services resolved for BleakClientWinRT (58:BF:09:30:2F:FE)
Services:
00001800-0000-1000-8000-00805f9b34fb (Handle: 1): Generic Access Profile
   00002a00-0000-1000-8000-00805f9b34fb (Handle: 2): Device Name
   00002a01-0000-1000-8000-00805f9b34fb (Handle: 4): Appearance
   00002a04-0000-1000-8000-00805f9b34fb (Handle: 6): Peripheral Preferred Connection Parameters
   00002aa6-0000-1000-8000-00805f9b34fb (Handle: 8): Central Address Resolution
   00002ac9-0000-1000-8000-00805f9b34fb (Handle: 10): Resolvable Private Address Only
00001801-0000-1000-8000-00805f9b34fb (Handle: 12): Generic Attribute Profile
0000180a-0000-1000-8000-00805f9b34fb (Handle: 13): Device Information
   00002a23-0000-1000-8000-00805f9b34fb (Handle: 14): System ID
   00002a24-0000-1000-8000-00805f9b34fb (Handle: 16): Model Number String
   00002a25-0000-1000-8000-00805f9b34fb (Handle: 18): Serial Number String
   00002a26-0000-1000-8000-00805f9b34fb (Handle: 20): Firmware Revision String
   00002a27-0000-1000-8000-00805f9b34fb (Handle: 22): Hardware Revision String
   00002a28-0000-1000-8000-00805f9b34fb (Handle: 24): Software Revision String
   00002a29-0000-1000-8000-00805f9b34fb (Handle: 26): Manufacturer Name String
   00002a2a-0000-1000-8000-00805f9b34fb (Handle: 28): IEEE 11073-20601 Regulatory Cert. Data List
   00002a50-0000-1000-8000-00805f9b34fb (Handle: 30): PnP ID
00001809-0000-1000-8000-00805f9b34fb (Handle: 32): Health Thermometer
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 33): PCB Temperature probe
   00002b18-0000-1000-8000-00805f9b34fb (Handle: 36): Ref Voltage
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 39): Sensor Raw OUT
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 42): Sensor int temp
0000180f-0000-1000-8000-00805f9b34fb (Handle: 45): Battery Service
   00002a19-0000-1000-8000-00805f9b34fb (Handle: 46): state of chargeCurrent draw
   00002b18-0000-1000-8000-00805f9b34fb (Handle: 49): Voltage
   00002aee-0000-1000-8000-00805f9b34fb (Handle: 52): Current draw
   00002a6e-0000-1000-8000-00805f9b34fb (Handle: 55): Temperature
00000001-0000-1000-8000-00805f9b34fb (Handle: 58): SDP
   00000002-0000-1000-8000-00805f9b34fb (Handle: 59): Vendor specific
   00000003-0000-1000-8000-00805f9b34fb (Handle: 62): RFCOMM
2022-10-13 17:09:56,352 bleak.backends.winrt.client DEBUG: Disconnecting from BLE device...
2022-10-13 17:09:56,505 bleak.backends.winrt.client DEBUG: session_status_changed_event_handler: id: <_bleak_winrt_Windows_Devices_Bluetooth.BluetoothDeviceId object at 0x0000023FB3B47410>, error: BluetoothError.SUCCESS, status: GattSessionStatus.CLOSED

with debug lines nothing looks bad ... :(

dlech commented 2 years ago

It's hard to say what is going on without seeing a Bluetooth packet log. Maybe a GATT service cache issue (i.e. try use_cached_services=False)?

profff commented 2 years ago

like that ?

async with BleakClient(dev.address,use_cached_services=False) as client:

it doesn't fix issue but with un binding and rebinding the device under windows it looks to work

dlech commented 2 years ago

like that ?

No, like this:

async with BleakClient(dev.address,winrt=dict(use_cached_services=False)) as client:

it doesn't fix issue but with un binding and rebinding the device under windows it looks to work

Yes, this would have the same effect.

profff commented 2 years ago

ok thanks

profff commented 2 years ago

heres what 've done 

        print("connecting to : ",TexDev)
        #async with BleakClient(TexDev.address) as client :
        async with BleakClient(TexDev.address,winrt=dict(use_cached_services=False)) as client:
            for service in client.services:
                if get16bitsUUID(service.uuid)==NUS_SERV_UUID :
                    for ch in service.characteristics :
                        print(ch)

and here's the result (without use_cached_services it works but if something change in caracteristics since bind it's not refreshed ) 

PS C:\src\btserial> python.exe .\btserial.py
connecting to :  5A:0F:E6:F0:F6:65: INF-BS
Traceback (most recent call last):
  File "C:\src\btserial\btserial.py", line 98, in <module>
    searchDeviceByName(DEVICE_NAME)
  File "C:\src\btserial\btserial.py", line 97, in searchDeviceByName
    asyncio.run(run())
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\asyncio\base_events.py", line 646, in run_until_complete
    return future.result()
  File "C:\src\btserial\btserial.py", line 63, in run
    async with BleakClient(TexDev.address,winrt=dict(use_cached_services=False)) as client:
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\__init__.py", line 354, in __aenter__
    await self.connect()
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\__init__.py", line 392, in connect
    return await self._backend.connect(**kwargs)
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\backends\winrt\client.py", line 339, in connect
    await self.get_services()
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\backends\winrt\client.py", line 531, in get_services
    await self._requester.get_gatt_services_async(*args),
OSError: [WinError -2147418113] Défaillance irrémédiable
dlech commented 2 years ago

but if something change in characteristics since bind it's not refreshed

If the attribute database changes, then the device needs to implement the GATT Database Hash characteristic or Services Changed characteristic to notify Windows that the services have changed.

You could also try logging Bluetooth packets with Wireshark to try to figure out why it is not working with use_cached_services=False.

profff commented 2 years ago

ok I finaly get wireshark working with Ble here's what happens when setting use_cached_service=False heres the code : 

print("connecting to : ",TexDev)
        #async with BleakClient(TexDev.address) as client :
        async with BleakClient(TexDev.address,winrt=dict(use_cached_services=False)) as client:
            for service in client.services:
                print(service)
                for ch in service.characteristics :
                    if 'notify' in ch.properties:
                        print("  ",ch,ch.properties)

heres shell result 

PS C:\src\btserial> python.exe .\btserial.py
connecting to :  6D:AF:BF:A2:0C:F0: INF-BS
Traceback (most recent call last):
  File "C:\src\btserial\btserial.py", line 155, in <module>
    searchDeviceByName(DEVICE_NAME_PREFIX)
  File "C:\src\btserial\btserial.py", line 154, in searchDeviceByName
    asyncio.run(run())
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\asyncio\base_events.py", line 646, in run_until_complete
    return future.result()
  File "C:\src\btserial\btserial.py", line 127, in run
    async with BleakClient(TexDev.address,winrt=dict(use_cached_services=False)) as client:
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\__init__.py", line 354, in __aenter__
    await self.connect()
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\__init__.py", line 392, in connect
    return await self._backend.connect(**kwargs)
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\backends\winrt\client.py", line 339, in connect
    await self.get_services()
  File "C:\Users\o.gaste\AppData\Local\Programs\Python\Python310\lib\site-packages\bleak\backends\winrt\client.py", line 531, in get_services
    await self._requester.get_gatt_services_async(*args),
OSError: [WinError -2147418113] Défaillance irrémédiable

and I'm attaching the wireshark capture noncached bleak error.zip

dlech commented 2 years ago

It looks like the Bluetooth chip is still scanning after connecting to the remote device and the remote device is still advertising during this time, neither of which should be happening.

Telling your device to stop advertising after connecting could be a good first step.

JohnsonChouCrestDiving commented 1 year ago

Hi @dlech, I have same issue here, when I upgrade to bleak-0.19.4, [WinError -2147024874] start to occur. In bleak-0.17.0, I got occasionally success, about 3 times out of 10, the other fail will be timeout. In bleak-0.19.4, fail case Red mark ATT command start to different from success case.

I need help

Error

bleak version: bleak 0.19.4 bleak-winrt 1.2.0 Python version: Python 3.9.6 Operating System: Windows 10 Home, Version 10.0.19044 Build 19044

DEBUG:bleak.backends.winrt.client:Connecting to BLE device @ C2:5E:51:CF:C5:2E 
DEBUG:bleak.backends.winrt.client:Get Services...
DEBUG:bleak.backends.winrt.client:session_status_changed_event_handler: id: <_bleak_winrt_Windows_Devices_Bluetooth.BluetoothDeviceId object at 0x00000146E5CB8270>, error: BluetoothError.SUCCESS, status: GattSessionStatus.ACTIVE
DEBUG:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: services changed
WARNING:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: unhandled services changed event
DEBUG:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: services changed
WARNING:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: unhandled services changed event
DEBUG:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: services changed
WARNING:bleak.backends.winrt.client:C2:5E:51:CF:C5:2E: unhandled services changed event
ERROR:asyncio:Task exception was never retrieved
future: <Task finished name='Task-1' coro=<run() done, defined at d:\Git\python\debug_tool\crest_debugger\interface\ble.py:144> exception=PermissionError(13, 'The device does not recognize the command', None, -2147024874, None)>
Traceback (most recent call last):
  File "d:\Git\python\debug_tool\crest_debugger\interface\ble.py", line 155, in run
    async with BleakClient(address,winrt=dict(use_cached_services=False)) as client:
  File "C:\Users\.pyenv\pyenv-win\versions\3.9.6\lib\site-packages\bleak\__init__.py", line 433, in __aenter__
    await self.connect()
  File "C:\Users\.pyenv\pyenv-win\versions\3.9.6\lib\site-packages\bleak\__init__.py", line 471, in connect
    return await self._backend.connect(**kwargs)
  File "C:\Users\.pyenv\pyenv-win\versions\3.9.6\lib\site-packages\bleak\backends\winrt\client.py", line 380, in connect
    await asyncio.gather(wait_connect_task, wait_get_services_task)
  File "C:\Users\.pyenv\pyenv-win\versions\3.9.6\lib\site-packages\bleak\backends\winrt\client.py", line 627, in get_services
    await service.get_characteristics_async(*args),
PermissionError: [WinError -2147024874] The device does not recognize the command

image

Success

bleak version: bleak 0.17.0 bleak-winrt 1.2.0 Python version: Python 3.9.6 Operating System: Windows 10 Home, Version 10.0.19044 Build 19044 image

dlech commented 1 year ago

I have same issue here, when I upgrade to bleak-0.19.4, [WinError -2147024874] start to occur.

This is not the same error as this issue, so I started a new issue for this in https://github.com/hbldh/bleak/issues/1123