Transport bled112 intermittent failure to stop scan

[ekkizogloy]

Every so often when using multiple BLED112 dongles, there is an intermittent issue that shows up when connecting. It is unknown what causes this.

[POD1MFullProcessorActor-6] Device found and connectable: d--0000-0000-0000-0a4a
[POD1MFullProcessorActor-6] Using BLED112 adapter at /dev/cu.usbmodem11
[POD1MFullProcessorActor-6] BLED112 adapter supports 3 connections
[EventLoopThread] Stopping adapter wrapper
[EventLoopThread] Error running finalizer for task LegacyAdapter (BLED112Adapter)
Traceback (most recent call last):
  File "/Users/lukee/arch/env/py38/lib/python3.8/site-packages/iotile/core/utilities/async_tools/event_loop.py", line 195, in stop
    await result
  File "/Users/lukee/arch/env/py38/lib/python3.8/site-packages/iotile/core/hw/transport/adapter/async_wrapper.py", line 106, in _stop_internal
    await self._execute(self._adapter.stop_sync)
  File "/usr/local/Cellar/[email protected]/3.8.1/Frameworks/Python.framework/Versions/3.8/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/Users/lukee/arch/env/py38/lib/python3.8/site-packages/iotile_transport_bled112/bled112.py", line 195, in stop_sync
    self.stop_scan()
  File "/Users/lukee/arch/env/py38/lib/python3.8/site-packages/iotile_transport_bled112/bled112.py", line 211, in stop_scan
    self._command_task.sync_command(['_stop_scan'])
  File "/Users/lukee/arch/env/py38/lib/python3.8/site-packages/iotile_transport_bled112/bled112_cmd.py", line 806, in sync_command
    raise HardwareError("Error executing synchronous command", command=cmd, return_value=retval)
iotile.core.exceptions.HardwareError: HardwareError: Error executing synchronous command
Additional Information:
command: ['_stop_scan']
return_value: {'reason': 'Could not stop scan for ble devices'}
[EventLoopThread] Stopping adapter wrapper