USB port TMS

[Peter Quain]

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., 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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