[visionegg] Re: parallel code update: works fine...but

Thanks, Andrew
silly question, but: how can I run LPTTriggerInController as "main",
means standalone app?

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. 

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)
3) start with the first picture also only after a trigger is received

...finally it would be good, to verify timing...inclusive, whether the
mouse-button reaction-times are measured correctly 

thanks

christoph


On Wed, 2003-02-19 at 08:55, Andrew Straw wrote:
> Hi Christoph,
> 
> I'm glad to hear you're having (some) success.
> 
> On my computer (tested under Win2K, but should be the same in linux as 
> this is probably a hardware issue), LPT pins 12 and 13 float high.  In 
> other words, without a grounding input, they signal +5V.  Perhaps this 
> explains your behavior.
> 
> By the way, I forgot to mention yesterday that I added a bit of code to 
> the DaqLPT module so that you can run it as a standalone python 
> application.  In this case, it enters an endless loop which changes the 
> output of the parallel port and reports the input.  This may help you 
> understand the behavior of your parallel port.
> 
> Cheers!
> Andrew
> 
> On Tuesday, February 18, 2003, at 08:13  PM, Christoph Lehmann wrote:
> 
> > the trigger_in.py now shows the gratings independent of the parallel
> > port input on pin12.
> >
> > and I still cannot explain, why I measure a +5V on pin12 in rest (no
> > input on pin 12, ground on pin18).
> 
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-- 
Christoph Lehmann 
Department of Psychiatric Neurophysiology 
University Hospital of Clinical Psychiatry 
Waldau 
CH-3000 Bern 60 
Switzerland 

Phone:  ++41 31 930 93 83 
Mobile: ++41 31 570 28 00
Fax:    ++41 31 930 99 61 
Email:  lehmann@xxxxxxxxxxxx 
Web:    http://www.puk.unibe.ch/cl/pn_ni_cv_cl.html

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