AssertionError about emokit

[cminus]

Hi, I am a newby in python so I'm not sure of what I've really done but I succeeded to make it run by changing the code this way :

def setupWin(self, headsetId):
filter = hid.HidDeviceFilter(vendor_id=0x21a1, product_name='EPOC BCI')
devices = []
devices = filter.get_devices()
assert len(devices) > headsetId
self.device = devices[headsetId]
self.device.open()
feature = self.device.find_feature_reports()
self.setupCrypto(self.device.serial_number, feature

Ask me if it still doesn't work I may have changed a few other things, but it shall work this way.

[UWjuan]

Thanks for the help!!

I still get the same error though.

Do you think this is a problem with the code not seeing the headset?
The devices array is empty when filter.get_devices is called.

[cminus]

Is your USB stick for emotiv on your computer? Try to launch the read.py file and let me know.

[cminus]

You can also try to rigth this in your main (I just added a few prints). It will allow you to see if the headset is detected (actually, it is just the stick here that is detected, no need to light your headset up)

if device.product_name == 'Brain Waves':
devices.append(device)
device.open()
device.set_raw_data_handler(sample_handler)
print ('Brain Waves found')
print(sample_handler)
elif device.product_name == 'EPOC BCI':
devices.append(device)
device.open()
device.set_raw_data_handler(bci_handler)
print ('EOPC BCI found')
print (bci_handler )
print('\n')
print (device)
#at this point, if the code returns informations about your headset, you can try to write:
#from emotiv import Emotiv
#e=Emotiv()

[cminus]

Sorry, it's in read.py's main that you wil find these lines.

[UWjuan]

Nothing happens. On the read.py script it just goes into the while loop without printing anything.

Where did you get the pywinusb stack?
I had to pretty much manually build it from source code I found online (http://pydoc.net/pywinusb/0.2.7/pywinusb) since the links aren't working for the google code.
Since this is pretty much what talks to the usb device I think there can be an error there.

Once again thanks for the quick help!!

-- Juan

[UWjuan]

Nevermind!!
I found the new version of pywinusb.

Still no luck though.

[cminus]

Are you working on linux or on windows? For me, it is windows 7.

You can write the following linne in your code, it will allow to stop the script and gives you access to the console in your IDLE. You can then type anything you want and check the values of some variables such as the value of your headset. But type the line at the right place or you won't be able to access the variables.

Sorry, I don't know much about your problem...

[UWjuan]

Sorry but what line of code?

[cminus]

Sorry, I forgot :)

import code; code.interact(local=locals())

[cminus]

Hi, sorry, I've seen your message only today. Actually, I've rewritten
something else to make the code run, using some parts of the code that I
understood. For me, it works but it can be improved.

you will find my code as attachement.

run extract to get the raw datas from the headset and extract 14 to get
the signal from the electrode. As you will see, pygame is very very
slow. Maybe you will find how to fix it. I am not on the project anymore
for a month bur I will still be glad to help if you need.

Cheers

On 11/07/2012 23:32, UWjuan wrote:

Sorry but what line of code?

---

Reply to this email directly or view it on GitHub:
https://github.com/qdot/emokit/issues/21#issuecomment-6920429

Hi, I am having the same problem. UWJuan were you able to fix this? cminus where is the attachment?

Thanks,
Urvish

[qdot]

Closing as dupe of #37, where we'll hopefully just overhaul things completely.

[cminus]

On 23/09/2012 07:56, urvishparikh wrote:

Hi, I am having the same problem. UWJuan were you able to fix this?
cminus where is the attachment?

Thanks,
Urvish

—
Reply to this email directly or view it on GitHub
https://github.com/qdot/emokit/issues/21#issuecomment-8795684.

Hi, I have finally chosen to use an other way to extract the datas, here
is the code I used, but I still have a few problems of connexion. It
only works when I launch the code before I put the headset on my head.
The rigth code is extract14.

Rémy.