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!

댓글 수: 3

Guillaume
Guillaume 2018년 9월 26일
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 2018년 9월 27일
이동: Walter Roberson 2024년 9월 8일
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 2019년 6월 28일
이동: Walter Roberson 2024년 9월 8일
Hi Daniele!
Did you by any chance find a solution for this? Having the same problem here!
Thanks,
Giulia

댓글을 달려면 로그인하십시오.

답변 (0개)

카테고리

도움말 센터File Exchange에서 Instrument Control Toolbox Supported Hardware에 대해 자세히 알아보기

제품

릴리스

R2018a

질문:

2018년 9월 25일

이동:

2024년 9월 8일

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by