USB port TMS

[Vera]

Hi Sarah,

we had the same problem, and as David already proposed, we used 3 pins
of the parallel port for incoming triggers and the other five for
outgoing triggers (from E-Prime to another computer). Could you do the
same maybe?
We needed to build some kind of splitter (the cable is kind of
splitted), in order to make this work (as we had incoming and outgoing
stuff on the same port), but if you want to send out to the same
device, it would also work without splitting. You just have to define
different pins on the parallel port (which leaves you with 38 (??)
options.

Just as an example, we would send different information over different
pin combinations (thereby discerning the infos). In the example below
we use, 3 different pin combinations (8, 16 and 24 - we only have
multiplications of 8 as the first 8 bits (pins  1, 2, 4) are used for
incoming triggers).

If NewTriggerValue > 0 AND NewTriggerValue < 7 AND TargetPresAbs = 1
Then
	If SetSize = 9 Then
		HyperEventValue = 8
	ElseIf SetSize = 16 Then
		HyperEventValue = 16
	ElseIf SetSize = 25 Then
		HyperEventValue = 24
	End If
End If

I hope this helps. I maybe don't explain it very well (I am not a
technician myself, sorry for that), but maybe it gives you some ideas.
And don't hesitate if you have any more questions.

Greetings, Vera


On Jun 1, 12:18 am, Peter Quain <pqu... at une.edu.au> wrote:
> what about timing issues David - anything to be aware of?
>
> At 08:20 AM 1/06/2010, you wrote:
>
> >Sara,
>
> >Come to think of it, there is a way to send & receive data through
> >USB using E-Prime, in fact I am doing that for a project now.  First
> >go to Measurement Computing (referred to earlier) and get whatever
> >I/O board suits your fancy, e.g., their USB-1024 ($100).  When that
> >arrives, install the Universal Libray software that comes with
> >it.  Then add the appropriate Declare statements in the User Script
> >area of your EP program (see instructions that come with the MCC
> >UL).  Now you can use MCC UL function calls from EP inline code to
> >send & receive data through the USB port.
>
> >Recognizing that the MCC UL essentially just adds a DLL to provide
> >the USB support, with enough ingenuity you could take this even
> >further by writing your own DLL to use from EP.  For that, you might
> >want to take a look at "USB Complete" by Jan Axelson.
>
> >Mind you, I am not advising you do any of this.  Just being an
> >academic and pointing out the full range of possibilities.
>
> >-- David McFarlane, Professional Faultfinder
>
> >David McFarlane wrote:
> >>Sara,
> >>Stock reminder:  1) I do not work for PST.  2) PST's trained staff
> >>really does like to take any and all questions at
> >>http://support.pstnet.com/e%2Dprime/support/login.asp, and they
> >>strive to respond to all requests in 24-48 hours -- this is pretty
> >>much their substitute for proper documentation, so make full use of
> >>it.  3) If you do get an answer from PST Web Support, please extend
> >>the courtesy of posting their reply back here for the sake of others.
> >>That said, here is my take ...
> >>Unless PST has added something new to the latest release of EP2,
> >>E-Prime simply has no facility for sending or receiving data
> >>through a USB port, so you are just out of luck there.  But do not
> >>take my word for this, please contact PST Web Support yourself and
> >>then report back here.
> >>Say, why not just install another parallel port?  Or, does your
> >>other device need all 8 outputs from the parallel port?  If not,
> >>why not just build a cable to send different wires to your
> >>different devices?  Just take a look at the book "Parallel Port
> >>Complete" by Jan Axelson to get some idea of how to make full use
> >>of the parallel port.  Or, skip the parallel port and just install
> >>a real digital I/O card (e.g., fromhttp://www.mccdaq.com).
> >>-- David McFarlane, Professional Faultfinder
>
> >>>does anyone knows the scropt to open the USB port in order to trigger
> >>>a TMS?
>
> >>>please, let me know
> >>>I have to send a trigger though the USB port, because the parallel
> >>>port is used to trigger another device.
>
> >>>thank you very much
> >>>Sara
>
> >--
> >You received this message because you are subscribed to the Google
> >Groups "E-Prime" group.
> >To post to this group, send email to e-prime at googlegroups.com.
> >To unsubscribe from this group, send email to
> >e-prime+unsubscribe at googlegroups.com.
> >For more options, visit this group at
> >http://groups.google.com/group/e-prime?hl=en.

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.