Re: Openeeg-list Digest, Vol 78, Issue 4

I've tried searching for such a document myself without much luck but...

 

For the OpenEEG it is 17 byte packets as follows:

 

First two bytes 0xA5 and 0x5A (sync bytes)

Third byte 0x02 (version of the firmware)

Fourth is packet counter incrementing by 1 each packet

Then 6 pairs of bytes (2 bytes for each of 6 channel in 10-bit resolution)

17th byte is 0x0f

 

I would assume that this would be the same for the USB-EEG, as BrainBay etc
are recommended as software.

It appears that the USB-EEG uses a virtual COM port in order to be
compatible with the software (just as I now use a Serial-USB converter +
Virtual com port).

 

Hope this helps.

 

Paddy

 

 

 

From: Gregory Perry [mailto:[email protected]] 
Sent: 16 November 2012 19:13
To: Discussion of EEG hardware, software, training protocols, NFB theory -
for developers and users.
Subject: Re: [Openeeg-list] Openeeg-list Digest, Vol 78, Issue 4

 

Is there a document that describes the raw data output from an openEEG
device such as the EEG-SMT (framing etc)?  How is that information presented
to the host computer via USB?  Is it just a serial interface on the PC side?


 

  _____  

From: Stefan Jung [[email protected]]
Sent: Tuesday, November 13, 2012 12:09 AM
To: [email protected]
Subject: Re: [Openeeg-list] Openeeg-list Digest, Vol 78, Issue 4

Mike

 

An EEG amplifier's sole purpose is to sample data and send this (raw) data
to the PC host.  If your PC app can connect and sync on that data, the work
is done.

 

"Functions" are the reserve of the software app.

 

It would also help to be more specific as to which functions you are talking
about.

 

Stefan

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