Cannot find OpenBCI Ganglion Mac address

[Elisabeth-github]

Hello,
I am trying to print raw data from Ganglion on Linux by using the following script entitled "Ganglion_print_raw_data.py".

from pyOpenBCI import OpenBCIGanglion

def print_raw(sample):
print(sample.channels_data)

board = OpenBCIGanglion(mac=None)

board.start_stream(print_raw)

I am running it with:
$ sudo python Ganglion_print_raw_data.py

I receive this:
Traceback (most recent call last):
File "Ganglion_print_raw_data.py", line 6, in
board = OpenBCIGanglion(mac=None)
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 34, in init
self.mac_address = self.find_mac()
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 99, in find_mac
raise OSError('Cannot find OpenBCI Ganglion Mac address.')
OSError: Cannot find OpenBCI Ganglion Mac address.

---

I also run "ifconfig -a" and I take the MAC address found next to "HWaddr", that is "58:8a:5a:18:ee:ad" and I use it as a value for argument mac (mac='58:8a:5a:18:ee:ad'). I receive this:

Traceback (most recent call last):
File "Ganglion_print_raw_data.py", line 7, in
board=OpenBCIGanglion(mac='58:8a:5a:18:ee:ad')
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 43, in init
self.connect()
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 51, in connect
self.ganglion = Peripheral(self.mac_address, 'random')
File "/usr/local/lib/python2.7/dist-packages/bluepy/btle.py", line 391, in init
self._connect(deviceAddr, addrType, iface)
File "/usr/local/lib/python2.7/dist-packages/bluepy/btle.py", line 439, in _connect
raise BTLEDisconnectError("Failed to connect to peripheral %s, addr type: %s" % (addr, addrType), rsp)
bluepy.btle.BTLEDisconnectError: Failed to connect to peripheral 58:8a:5a:18:ee:ad, addr type: random
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 79, in disconnect
self.char_discon.write(b' ')
AttributeError: 'OpenBCIGanglion' object has no attribute 'char_discon'
Error in sys.exitfunc:
Traceback (most recent call last):
File "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)
File "/home/elisabeth/.local/lib/python2.7/site-packages/pyOpenBCI/ganglion.py", line 79, in disconnect
self.char_discon.write(b' ')
AttributeError: 'OpenBCIGanglion' object has no attribute 'char_discon'

---

I thought of trying the OpenBCICyton option. If I do ps -a to find the port and then use "board = OpenBCICyton(port='/dev/pts/19')" I get "Serial established" and nothing else.

Could I please ask for your help?

Thank you

Best wishes

Elisabeth

[Andrey1994]

I recommend you to try this SDK instead: https://brainflow.readthedocs.io/en/latest/Examples.html#python-sample you should be able to install it from pypi like:

pip install brainflow

and to use ganglion you need to run sample from this docs with options:

--board-id 1 --serial-port %enter ganglion dongle port here%

If it doesnt work - create an issue in brainflow project on github and I will fix it

[Andrey1994]

and I am not an expert in pyopenbci but I belive it expects Ganglion's Mac Address and you can not determine it using ifconfig on linux you need to use smth like hcitool and on windows there is free ble expoler app in microsoft store

[Andrey1994]

also I think '/dev/pts/19' is not a correct port for ganglion or cyton dongle more likely its a pseudoterminal