[FieldTrip] Biosemi eventtype problem

Alexander Maye a.maye at uke.de
Wed Jan 21 09:09:32 CET 2015


Hi Vitoria,

with this minimal description it's hard to say what the problem is, but these 
are the things that come to my mind:
- Did you setup/modify a config file for the ftbuffer, and did you start the 
buffer with this config?
- Sometimes the higher bits of the parallel port are set, giving you event 
values >60.000. Maybe you could mask out the bits that you are interested in? 
Another possibility is that ftbuffer's event values are in two's-complement 
format. In any case you could check the output of the ftbuffer program - if 
your events aren't there, your program will not see them either.
- Transition from some value to zero are not detected as events as it seems.

Hope this helps,

		ALEX.

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