[visionegg] Re: parallel code update: works fine...but
- From: Andrew Straw <andrew.straw@xxxxxxxxxxxxxxx>
- To: visionegg@xxxxxxxxxxxxx
- Date: Mon, 24 Feb 2003 11:41:57 +1030
Hi Christoph,
Christoph Lehmann wrote:
Thanks, Andrew
silly question, but: how can I run LPTTriggerInController as "main",
means standalone app?
I'm not sure I understand your question exactly. To running "python
DaqLPT.py". DaqLPT.py is a Python script when run standalone in
addition to being a VisionEgg module. Here's a bit of background on how
this trick works -- because Python modules are valid code, they can be
run as scripts. In most cases, however, modules merely define classes
as so forth, so when run as a script, the interpreter starts, runs the
script, and then quits, usually without doing much other than having a
few classes defined. If you want a module to do something only when
run directly as a script, put those standalone-specific instructions
behind an if __name__ == "__main__" conditional. (See the python docs
at http://www.python.org/doc/current/lib/module-main.html )
by the way: my load_picture app now seems to work fine: pictures change
at the time, the pin12 goes from 0 to 5V. After I read in your code,
that only SPP is supported, I changed back from EPP to SPP.
I'm glad to hear it works! On the computers I've tested, I didn't have
make any changes to the BIOS settings for SPP parallel port mode. I
just updated the DaqLPT docs, though.
no there are "only" 3 things left to do
1) I will update the latest MESA drivers, as soon as I backuped my
system
2) change the code to include fixation cross between stimuli (is there
a
demo, which I can use for orientation)
I'm not sure exactly what you want to do... Is your script
continuously in a go loop? If so, you'll need to create an instance of
a Target2D class or FixationSpot class (they're very similar) and
control the "on" parameter. I don't think there are any demos that do
exactly this, but it is straightforward.
...finally it would be good, to verify timing...inclusive, whether the
mouse-button reaction-times are measured correctly
I agree that calibrating this is a good idea. I'm just not sure how
you could click the mouse button at a calibrated time so that you can
measure latency and, more importantly, variability in the latency. But
depending on the resolution you need for your timing information, it
may be easy.
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