Re: [buildcheapeeg] EDF and DDF file formats

From: Dave (dfisher_at_pophost.com)
Date: 2002-03-14 19:40:29


On Thu, 14 Mar 2002 12:22:58 +0000, Jim Peters wrote:

>For an example of a complex serial format, have a look at the ProComp
>format. From the notes in Dave's code, it seems that it sends data
>like this (reading left->right, then top->bottom -- I'm missing out a
>lot of detail here):
>
> Chan-A Chan-B Chan-C
> Chan-A Chan-B Chan-D
> Chan-A Chan-B Chan-E
> Chan-A Chan-B Chan-F
> Chan-A Chan-B Chan-G
> Chan-A Chan-B Chan-H
> Chan-A Chan-B (other data)
> Chan-A Chan-B (other data)

Gosh, I'm pleased. My internal documentation was actually clear. :-)

On that note, I was really hoping to work more on this before putting it out
for public consumption, but I am now at the end of the week and I am heading
out of town. When I get back I will re-write the two areas that are Linux-only
to make it Windows compatible. This program is of limited use, though, unless
you have a ProComp. Other devices can easily be added. Also, there is no GUI
output. I will be adding some real-time graphics displays later to continue
testing interface ideas. To me, this program is more of a "playground test
bed" to work out ideas and test assumptions. The fact that it actually does
something useful, like read data from the ProComp is a plus.

Anyway, for those curious, the code can be found here in tar, gzipped format:

http://www.psychosensory.com/biofeedback-library.html

The detail that Jim-P refer's to above regarding the ProComp's method of
transmitting data
here:

http://www.psychosensory.com/linuxeeg/sourcedocs/classProCompPacketTable.html#_d
etails

Dave.



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