Press and release with joystick input

[David McFarlane]

Erika,

Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
takes 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...

I have no experience with joysticks in E-Prime, so I am just talking 
off the top of my head.  And the error message that you specify looks 
like a design-time error rather than either a compile-time or 
run-time error, so you get it when you try to enter "{-}" into the 
Allowable field in the object's Property Pages E-Studio.

So what happens if you instead use "{-ANY}"?  Does it work then?

You see, {-} means a *press* of a *dash* character, and the SRBox 
cannot send a dash (it can send only the numbers 1-8).  (In fact, in 
this case the notation does not even indicate a release, if you 
wanted a relese of a dash character you would have to use {--}).  So 
to get a release response from a SRBox, you have to use the dash 
followed by which button you want to see released, e.g., {-1}, {-2}, 
{-ANY}, etc.

Just a reminder to anyone else who happens to tune in, you may find 
this general technique covered in the "{key} nomenclature" topic in 
the E-Basic Help facility.

-- David McFarlane, Professional Faultfinder


At 11/9/2011 04:31 PM Wednesday, you wrote:
>I have created an experiment where I need to record both press and
>release of responses.  It works when I use a keyboard as an input
>device but when I use a joystick as input device (as this is how
>EPrime recognizes our SRBox) I get the folllowing error: The allowable
>response was unrecognized: {-}.  Is it possible to use press and
>release with a joystick and if so, how do I specify the release?
>Erika

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