OSX Muse 2016 NotConnectedError during connection attempt with BLED112

Hi there, I am experiencing issues connecting my 2016 Muse headband to muse-LSL. When I attempt to stream with my device or find its MAC address I receive the following errors.

muselsl stream --name Muse-660F

Traceback (most recent call last):
  File "/usr/local/bin/muselsl", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/site-packages/muselsl/__main__.py", line 51, in main
    cli = CLI(args.command)
  File "/usr/local/lib/python2.7/site-packages/muselsl/cli.py", line 9, in __init__
    getattr(self, command)()
  File "/usr/local/lib/python2.7/site-packages/muselsl/cli.py", line 42, in stream
    args.interface, args.name)
  File "/usr/local/lib/python2.7/site-packages/muselsl/stream.py", line 61, in stream
    found_muse = find_muse(name)
  File "/usr/local/lib/python2.7/site-packages/muselsl/stream.py", line 47, in find_muse
    muses = list_muses()
  File "/usr/local/lib/python2.7/site-packages/muselsl/stream.py", line 25, in list_muses
    adapter.start()
  File "/Users/lukeguerdan/School/capstone/muse-lsl/src/pygatt-fork/pygatt/backends/bgapi/bgapi.py", line 188, in start
    self._open_serial_port(max_connection_attempts=1)
  File "/Users/lukeguerdan/School/capstone/muse-lsl/src/pygatt-fork/pygatt/backends/bgapi/bgapi.py", line 171, in _open_serial_port
    "No BGAPI compatible device detected")
pygatt.exceptions.NotConnectedError: No BGAPI compatible device detected

python scan_devices.py

Traceback (most recent call last):
  File "scan_devices.py", line 17, in <module>
    list_devices = adapter.scan(timeout=10.5)
  File "/Users/lukeguerdan/School/capstone/muse-lsl/src/pygatt-fork/pygatt/backends/bgapi/bgapi.py", line 315, in scan
    scan_interval, scan_window, parameters
  File "/Users/lukeguerdan/School/capstone/muse-lsl/src/pygatt-fork/pygatt/backends/bgapi/bgapi.py", line 262, in send_command
    raise NotConnectedError()
pygatt.exceptions.NotConnectedError

I have connected a BLED112 dongle to my USB port as I attempt to connect. The issue seems to be related either to the connection of the underlying bgapi or some configuration on my Mac.

• Running High Sierra 10.13.6.
• BLED112-V1 manufactured by Silicon Labs

There is a related issue for bgapi here. I added the same timeout to pygatt’s start() function, but this did not solve the issue. This makes me think the issue is related to device connection. When I run system_profiler SPUSBDataType, I do not see any dongle information (which I believe I should). Do I need to install an additional driver or configure anything on my device?

Any suggestions or debugging tips would be greatly appreciated.

[lguerdan]

@fireant and others, this issue was caused by a defective BLED 112 Dongle not recognized by my machine. After getting a replacement everything is working as expected. Thank you for the help!

[lguerdan]

Hey @royyannick thanks for the tip. I am not getting any resources busy messages beyond the “No BGAPI compatible device detected”, which may explain why addressing peplin/pygatt#159 didn’t help in my case.

After running a fresh pip install I am getting a new error, which during handling produces the old one (now running with python 3):

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/pygatt/backends/bgapi/bgapi.py", line 155, in _open_serial_port
    serial_port = self._serial_port or self._detect_device_port()
  File "/usr/local/lib/python3.7/site-packages/pygatt/backends/bgapi/bgapi.py", line 131, in _detect_device_port
    raise BGAPIError("Unable to auto-detect BLED112 serial port")
pygatt.backends.bgapi.exceptions.BGAPIError: Unable to auto-detect BLED112 serial port

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/muselsl", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/site-packages/muselsl/__main__.py", line 51, in main
    cli = CLI(args.command)
  File "/usr/local/lib/python3.7/site-packages/muselsl/cli.py", line 9, in __init__
    getattr(self, command)()
  File "/usr/local/lib/python3.7/site-packages/muselsl/cli.py", line 42, in stream
    args.interface, args.name)
  File "/usr/local/lib/python3.7/site-packages/muselsl/stream.py", line 61, in stream
    found_muse = find_muse(name)
  File "/usr/local/lib/python3.7/site-packages/muselsl/stream.py", line 47, in find_muse
    muses = list_muses()
  File "/usr/local/lib/python3.7/site-packages/muselsl/stream.py", line 25, in list_muses
    adapter.start()
  File "/usr/local/lib/python3.7/site-packages/pygatt/backends/bgapi/bgapi.py", line 187, in start
    self._open_serial_port(max_connection_attempts=1)
  File "/usr/local/lib/python3.7/site-packages/pygatt/backends/bgapi/bgapi.py", line 170, in _open_serial_port
    "No BGAPI compatible device detected")
pygatt.exceptions.NotConnectedError: No BGAPI compatible device detected

Not seeing any Muse info in the system profiler makes me think it may be a lower-level problem, may try an OS upgrade as well.

I haven’t had time to look at this deeply but will figure it out next week and let you know what I find out.