Digital Input

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vre
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21 Apr 2025 14:07 - 21 Apr 2025 21:31 #326812 by vre

Digital Input was created by vre

If i have this in hal

#M66 Digital Inputs
net spindle-stoped motion.digital-in-03 mesa_input_pin

and this subroutine code

M66 P3 L3 Q4 ;Check for spindle stopped - wait up to 4 seconds for digital input 3 to turn on
o307 if [#5399 LT 0]
(abort, spindle not stopped)
o307 endif

How can change this code to check if spindle is stopped
if i have not set this pin

net spindle-stoped motion.digital-in-03 mesa_input_pin

In reality spindle is connected to mesa daughter card 7i33
and i want to check from subroutine code if it is stopped.

Last edit: 21 Apr 2025 21:31 by vre.

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andypugh
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21 Apr 2025 17:12 #326819 by andypugh

Replied by andypugh on topic Digital Input

is "mesa-input-pin" just a placeholder?

I don't really understand the question. Are you wanting to not have the HAL entry for some reason?

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vre
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21 Apr 2025 21:27 - 21 Apr 2025 21:29 #326840 by vre

Replied by vre on topic Digital Input

The code needs a digital input pin for stopped-spindle to work
because i do not have this stopped-spindle digital input how can check
in subroutine code if spindle is stopped ?

mesa_input_pin can be hm2_7i80.0.gpio.003.in

Last edit: 21 Apr 2025 21:29 by vre.

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rodw
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21 Apr 2025 22:47 #326847 by rodw

Replied by rodw on topic Digital Input

Probably what you need is spindle.0.at-speed but its true when running
Being a mesa card your pin probably has a matching .not signal otherwise, use the not component to invert the signal

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vre
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21 Apr 2025 23:11 #326852 by vre

Replied by vre on topic Digital Input

So this code does the same thing?
(pwmgen.00 is the spindle pwmgen)

	o307 if [#<_hal[[pwmgen.00.enable]> GT 0]
		(abort, spindle not stopped)
	o307 endif

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andypugh
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22 Apr 2025 14:55 #326895 by andypugh

Replied by andypugh on topic Digital Input

If you want to be sure that the spindle is actually stopped, then use something like a HAL "wcomp" to provide a "true" signal when the spindle encoder velocity is very close to zero.

linuxcnc.org/docs/stable/html/man/man9/wcomp.9.html

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