How to use digital inputs as a start, home keys

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05 Apr 2011 06:39 #8537 by dzarek
hello
How to use the LPT port inputs as the keys to start, home, etc.
That are configured as digital inputs.
I have free pins and I do not want to attach additional adapted keyboard.

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05 Apr 2011 11:21 #8547 by Rick G
You should be able to use hal to take the input signal from the lpt to perform a task.
You should also be able to use hal with the pin to preform a MDI command.
www.linuxcnc.org/docs/HAL_User_Manual.pdf

Rick G

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05 Apr 2011 11:48 #8551 by BigJohnT
You might want to take a look at halui (hal user interface).

www.linuxcnc.org/docview/html/gui_halui.html

John

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05 Apr 2011 14:33 - 05 Apr 2011 15:31 #8568 by dzarek
ok, I add

in the file. ini
HALUI = halui

in the file. hal
net din-00 => motion.digital-in-00
net din-00 <= parport.0.pin-15-al

Now I want to connect motion.digital-in-00, together with halui.program.step (bit, in) and it is black magic for me:)
I think I need to do it in a file custom.hal, but each time the program does not start

this is my first approach to HALL so please forgiving with us


edit
it`s work :)
Last edit: 05 Apr 2011 15:31 by dzarek.

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05 Apr 2011 15:29 #8581 by andypugh
dzarek wrote:

net din-00 => motion.digital-in-00
net din-00 <= parport.0.pin-15-al


This might not be what you want. That sends a digital input to a "place" where G-code can see it.

If you want to, for example, link it to program-start then you would use

net startbutton parport.0.pin-15-in => halui.program.run

(or, you can split it onto two lines like you did above, if you like)
I have a feeling that there is more to running a program now than setting program.run to high, you might need

net startbutton parport.0.pin-15-in => halui.mode.auto halui.program.run

To set both auto-mode and program-run from the same button.

There are many other halui pins that might be useful to you.

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05 Apr 2011 19:33 - 05 Apr 2011 19:39 #8616 by dzarek
Thank you very much for your help
I have one more question, how to change the status of the pin NO <-> NC?
Last edit: 05 Apr 2011 19:39 by dzarek.

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05 Apr 2011 19:44 #8617 by BigJohnT
Which pin?

John

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05 Apr 2011 19:50 #8618 by andypugh
If it is a parallel port input pin, use the in-not version of the pin.

eg parport.0.pin-15-in-not

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