USB port TMS

[David McFarlane]

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., from 
> http://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

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