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Hi,

I have created a pyvcp with a led which should become green when machine reaches the X reference point.

The HALpins are as follows:
- LED: pyvcp.xref
- X ref switch: parport.0.pin-10-in

When I try to modify the custom_postgui halfile the software would not start anymore. I must have made mistakes when connecting the two halpins. How do you do it?

Regards,
Adam

I would assume you made some spelling error. It would help if you posted what you added.

Even though this board has little traffic I went ahead and split your question into a new topic just to see if the button worked...

John

Hi John,

As for the custom_postgui.hal I added the following line which does not seem to work well:

net parport.0.pin-10-in => pyvcp.x_ref_led

Regards,
Adam

Ok, what is the code in your .xml file that you used to make the led?

Here is an example that would match your halpin:
<led>
<halpin>"x_ref_led"</halpin>
<size>50</size>
<on_color>"green"</on_color>
<off_color>"red"</off_color>
</led>

If you comment out the net line with # does the led show up? If not then we need to back up to the code that creates the led....

John

pleezwrite wrote:
That's almost correct, but you're missing the signal name.
The syntax for net is:
So you'll have to use:
Regards,
Alex

John and Alex,

I think this is exactly what I did but I copied below the XML and HAL files again that I used.

John, when I add the # symbol the led still shows up on the screen and EMC starts. when I delete the symbol EMC would not start anymore and comes up with that usual long error massage with some kernel information at the end.

Panel.xml:

<led>
<halpin>"xref"</halpin>
<size>50</size>
<on_color>"green"</on_color>
<off_color>"red"</off_color>
</led>

Custom_postgui.hal:

net X_reference_led pyvcp.xref <= parport.0.pin-10-in

Regards,
Adam

pleezwrite wrote:
Can you use an online pasting facility (like pastebin.ca/) to put that information there? (and give us the resulting link).
The important part is in there

Regards,
Alex

Here it is, hope its readable.

Adam

now? This attachment is hidden for guests. Please log in or register to see it.

The error is this:
custom_postgui.hal:14: pin 'parport.0.pin-10-in' was already linked

That means you probably connected the pin 10 for something else using stepconf.
If you're sure you're not using, just put an "unlinkp parport.0.pin-10-in" before you do the 'net' to connect the parport pin to the pyvcp pin.

Regards,
Alex