[open] usb to parallel port

Comments

• sebastiaan

  December 2012 edited 1:55PM

  Hi Tas,

  My guess is that the USB-to-parallel port will not work any differently from a regular parallel port, in which case you could simply follow the instructions here: http://osdoc.cogsci.nl/miscellaneous/sending-triggers-eegerp

  Good luck!

  Cheers,
  Sebastiaan

  
  
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• miran

  December 2012 edited 1:55PM

  Dear Sebastiaan

  As also mentioned on the website of pyserial, I think the problem is the port io number the usb to LPT device. As it is a printer port emulator I can not find a port number as required in the given python script ( e.g. port = 0x378)

  Best

  Tas
• sebastiaan

  December 2012 edited 1:55PM

  Indeed, it states:

  The giveio driver must be installed as the module needs direct access to the hardware. This also means that USB parallel port adapters won’t be supported.

  But ... this refers to pyparallel / giveio, and perhaps the same restriction does not apply dlportio.dll and/ or inpout32.dll (although it may, of course). Unfortunately, I don't know of anyone who has tried to interface with a USB-to-parallel device, so you are more-or-less on your own here. Perhaps Google has something to say about USB + dlportio.dll or USB + inpout32.dll?

  If you manage to resolve this issue, I would love to know so we can add this to the documentation. I imagine more and more people will starting using USB-emulated ports. (Although I honestly don't understand why the parallel port is still used at all, emulated or no. It's nothing but trouble.)

  Good luck!

  
  
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• Johan_P

  April 2014 edited 1:55PM

  Hi,
  I'd like also to go through the USB. If you find a solution, please share !

  I manage to obtain a trigger using an old computer with a parallel port. I use the parallel_port_trigger plug-in.
  But I had a problem. Everything was running but I wasn't seeing the trig. After some extensive search, I found a small soft called LPTTestUtility. It allows to see the LPT and to try to reach it. I discovered that the address of the port was not good. Instead of 0x378, my port was at 0x3BC.
  Perhaps you have a similar problem.

  http://lpt-port-test-utility.software.informer.com/