Blue Tooth Connection

[JaeYoungLee79]

Dear Sir

---

(base) C:\Users\eojin>C:/Users/eojin/anaconda3/python.exe e:/pylgbst-master/examples/demo.py
44 INFO root Trying get_connection_bluepy
48 INFO root Trying get_connection_bluegiga
120 INFO pygatt.backends.bgapi.bgapi Initialized new BGAPI backend
121 INFO pygatt.backends.bgapi.bgapi Auto-detecting serial port for BLED112
146 INFO root Trying get_connection_gatt
185 INFO root Trying get_connection_bleak
270 INFO comms-bleak Discovering devices... Press green button on Hub
C:\Users\eojin\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py:142: FutureWarning: The discover function will removed in
a future version, use BleakScanner.discover instead.
devices = await discover(timeout=1)
11019 WARNING hub Got only these devices: (None, None, None, None, None, None, None)
Exception in thread Thread-1:
Traceback (most recent call last):
File "C:\Users\eojin\anaconda3\lib\threading.py", line 973, in _bootstrap_inner
self.run()
File "C:\Users\eojin\anaconda3\lib\threading.py", line 910, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\eojin\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 50, in
self._connection_thread = threading.Thread(target=lambda: asyncio.run(self._bleak_thread()))
File "C:\Users\eojin\anaconda3\lib\asyncio\runners.py", line 44, in run
return loop.run_until_complete(main)
File "C:\Users\eojin\anaconda3\lib\asyncio\base_events.py", line 647, in run_until_complete
return future.result()
File "C:\Users\eojin\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 60, in _bleak_thread
await bleak.connect(self.hub_mac, self.hub_name)
File "C:\Users\eojin\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 157, in connect
raise ConnectionError('Device not found.')
ConnectionError: Device not found.

How do I do?
Or before starting your example.
How to check connection?

Thanks
Best Regards

[JaeYoungLee79]

Windows User must have a "[Bluegiga BLED112 Bluetooth Smart Dongle]"?
I'm already use Scratch 3.0 with Lego boost.

[undera]

To check the connection possibility, you can just use

import logging
import time

from pylgbst import get_connection_auto

logging.basicConfig(level=logging.DEBUG)
conn = get_connection_auto()
conn.enable_notifications()

time.sleep(60) # wait 1 minute to gather info

That would give some more debugging information, might help understanding what does not work.

The requirement for BLED112 requirement is written for "the Windows version of pygatt".

On Windows, different types of BLE hardware and different versions of libraries are known to have problems. It requires some experimentation and troubleshooting sometimes. I don't have any better solution for now.

[JaeYoungLee79]

Refer to https://github.com/rphuang/IotDevicesPy
There is the explanation with Install at windows
It works. & I try to check deeply for my thinking.
Anyway, Robot moving.

I will compare your code.

Thanks
Best Regards

[HotDog702]

Have got the same issue ((

`runfile('D:/Python/LEGO/pylgbst-master/examples/demo.py', wdir='D:/Python/LEGO/pylgbst-master/examples')
17636	INFO	root	Trying get_connection_bleak
17702	INFO	comms-bleak	Discovering devices... Press green button on Hub
C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py:150: FutureWarning: The discover function will removed in a future version, use BleakScanner.discover instead.
  devices = await bleak.discover(timeout=1, **kwargs)
28317	WARNING	hub	Got only these devices: (None, None, None, None, None, None, None)
Exception in thread Thread-6:
Traceback (most recent call last):
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 980, in _bootstrap_inner
    self.run()
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 917, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 51, in 
    self._connection_thread = threading.Thread(target=lambda: asyncio.run(self._bleak_thread()))
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\base_events.py", line 647, in run_until_complete
    return future.result()
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 65, in _bleak_thread
    await bleak.connect(self.hub_mac, self.hub_name, **kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 165, in connect
    raise ConnectionError('Device not found.')
ConnectionError: Device not found.`

[HotDog702]

Tried to do this:

`from pylgbst.hub import MoveHub
from pylgbst import get_connection_bleak

conn = get_connection_bleak(hub_name='Move Hub')

hub = MoveHub(conn)

for device in hub.peripherals:
    print(device)`

The connection looks to established (blue constant LED on MoveHub), but MoveHub very quickly switched off.

`C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py:150: FutureWarning: The discover function will removed in a future version, use BleakScanner.discover instead.
  devices = await bleak.discover(timeout=1, **kwargs)
Got only these devices: (None, None, None, None, None, None, None)
Exception in thread Thread-6:
Traceback (most recent call last):
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 980, in _bootstrap_inner
    self.run()
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 917, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 51, in 
    self._connection_thread = threading.Thread(target=lambda: asyncio.run(self._bleak_thread()))
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\base_events.py", line 647, in run_until_complete
    return future.result()
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 66, in _bleak_thread
    await bleak.set_notify_handler((self._safe_handler, self.resp_queue))
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 215, in set_notify_handler
    await self._client.start_notify(MOVE_HUB_HW_UUID_CHAR, c)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\bleak\__init__.py", line 649, in start_notify
    await self._backend.start_notify(characteristic, wrapped_callback, **kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\bleak\backends\winrt\client.py", line 890, in start_notify
    await winrt_char.write_client_characteristic_configuration_descriptor_async(
OSError: [WinError -2147467260] Operation aborted`

After that I have to restart python kernel as it hangs ((

[HotDog702]

The result of

import logging
import time

from pylgbst import get_connection_auto

logging.basicConfig(level=logging.DEBUG)
conn = get_connection_auto()
conn.enable_notifications()

time.sleep(60) # wait 1 minute to gather info

Connection seems to established:

INFO:root:Trying get_connection_bleak
DEBUG:asyncio:Using selector: SelectSelector
INFO:comms-bleak:Discovering devices... Press green button on Hub
C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py:150: FutureWarning: The discover function will removed in a future version, use BleakScanner.discover instead.
  devices = await bleak.discover(timeout=1, **kwargs)
DEBUG:bleak.backends.winrt.scanner:Received 00:00:00:00:00:00: Move Hub.
DEBUG:bleak.backends.winrt.scanner:skipping callback, waiting for scan response
DEBUG:bleak.backends.winrt.scanner:Received 00:00:00:00:00:00: Move Hub.
DEBUG:bleak.backends.winrt.scanner:skipping callback, waiting for scan response
DEBUG:bleak.backends.winrt.scanner:Received 00:00:00:00:00:00: Move Hub.
DEBUG:bleak.backends.winrt.scanner:skipping callback, waiting for scan response
DEBUG:bleak.backends.winrt.scanner:Received 6F:F7:DE:81:9E:77: .
DEBUG:bleak.backends.winrt.scanner:skipping callback, waiting for scan response
DEBUG:bleak.backends.winrt.scanner:Received 00:16:53:AF:A1:FF: .
DEBUG:bleak.backends.winrt.scanner:skipping callback, waiting for scan response
DEBUG:bleak.backends.winrt.scanner:Received 00:16:53:AF:A1:FF: Move Hub.
DEBUG:bleak.backends.winrt.scanner:Received 00:16:53:AF:A1:FF: .
DEBUG:bleak.backends.winrt.scanner:Received 00:16:53:AF:A1:FF: Move Hub.
DEBUG:bleak.backends.winrt.scanner:1 devices found. Watcher status: 3.
DEBUG:comms-bleak:Devices: [BLEDevice(00:16:53:AF:A1:FF, Move Hub)]
DEBUG:comms-bleak:00:16:53:AF:A1:FF: Move Hub
DEBUG:comms:Checking device: Move Hub, MAC: 00:16:53:AF:A1:FF
INFO:comms:Found Move Hub at 00:16:53:AF:A1:FF
INFO:comms-bleak:Device matched: BLEDevice(00:16:53:AF:A1:FF, Move Hub)
DEBUG:bleak.backends.winrt.client:Connecting to BLE device @ 00:16:53:AF:A1:FF
DEBUG:bleak.backends.winrt.client:getting services (service_cache_mode=None, cache_mode=None)...
DEBUG:bleak.backends.winrt.client:session_status_changed_event_handler: id: <_bleak_winrt_Windows_Devices_Bluetooth.BluetoothDeviceId object at 0x000001EF8E932F90>, error: BluetoothError.SUCCESS, status: GattSessionStatus.ACTIVE

DEBUG:comms-bleak:Connection status: True

DEBUG:bleak.backends.winrt.client:session_status_changed_event_handler: id: <_bleak_winrt_Windows_Devices_Bluetooth.BluetoothDeviceId object at 0x000001EF8E932F10>, error: BluetoothError.SUCCESS, status: GattSessionStatus.CLOSED
DEBUG:bleak.backends.winrt.client:closing requester
DEBUG:bleak.backends.winrt.client:closing session
Exception in thread Thread-6:
Traceback (most recent call last):
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 980, in _bootstrap_inner
    self.run()
  File "C:\Users\HUAWEI\anaconda3\lib\threading.py", line 917, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 51, in <lambda>
    self._connection_thread = threading.Thread(target=lambda: asyncio.run(self._bleak_thread()))
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Users\HUAWEI\anaconda3\lib\asyncio\base_events.py", line 647, in run_until_complete
    return future.result()
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 66, in _bleak_thread
    await bleak.set_notify_handler((self._safe_handler, self.resp_queue))
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\pylgbst\comms\cbleak.py", line 215, in set_notify_handler
    await self._client.start_notify(MOVE_HUB_HW_UUID_CHAR, c)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\bleak\__init__.py", line 649, in start_notify
    await self._backend.start_notify(characteristic, wrapped_callback, **kwargs)
  File "C:\Users\HUAWEI\anaconda3\lib\site-packages\bleak\backends\winrt\client.py", line 890, in start_notify
    await winrt_char.write_client_characteristic_configuration_descriptor_async(
OSError: [WinError -2147467260] Operation aborted