How do I trigger my parallel port?

Hello community I need to use the 25 pin parallel port (that one for the printer, to make it easy) to trigger some custom made devices (very simple led attached via cable to a parallel port to be plugged to the computer) I did it many time with older machines, now I have a Matlab 2018a, with a 64bit computer. I alsways uysed "digitalio" function and realted to switch the leds on
dio = digitalio('parallel','lpt1');
addline(dio,0:7,'out') %pin 8
putvalue(dio.line,[0 1 0 0 0 0 0 0]);
WaitSecs(.005);
putvalue(dio.line,[0 0 0 0 0 0 0 0]);
Now those functions are not working, and I'm trying to figure out how use the daq commands. The principal problem is that the computer doesn't allow me to see the parallel port
When i type
daq.getDevices
ans =
No data acquisition devices available.
Click here for a list of known vendors.
Click here for troubleshooting tips.
I obtain this error. I tried to update all the driver, i installed the National instrument support package for matlab but i'm still unable to solve my problem.,
Thank you!

3 Kommentare

Guillaume
Guillaume am 26 Sep. 2018
Does your OS sees the parallel port? If on Windows, is it visible in Device Manager?
For that matter, does your computer even has a parallel port? Modern computers don't tend to have one. Even serial ports are starting to disappear now.
Daniele Migliorati
Daniele Migliorati am 27 Sep. 2018
Verschoben: Walter Roberson am 8 Sep. 2024
Yes, I can see the device since Ii updated the dirvers for it, via control pannel. And yes... Of course I have a parallel port... Otherwise this topic would be very strange... I'm a researcher, so we build the computer on our own because we need the parallel port (at least me)
Giulia Orioli
Giulia Orioli am 28 Jun. 2019
Verschoben: Walter Roberson am 8 Sep. 2024
Hi Daniele!
Did you by any chance find a solution for this? Having the same problem here!
Thanks,
Giulia

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Version

R2018a

Gefragt:

am 25 Sep. 2018

Verschoben:

am 8 Sep. 2024

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