How to set a Bit in HAL
31 Jan 2024 00:09 #292032
by wisao
How to set a Bit in HAL was created by wisao
Hey guys,
I'm using the LIMIT3 component linuxcnc.org/docs/html/man/man9/limit3.9.html
how do I activate limit3.0.enable ?
I need to activate it with one parallel port button and deactivate it with the another.
# Limit 3 Enable Set / Clr
net limit3-0-set <= parport.0.pin-12-in-not
net limit3-0-clr <= parport.0.pin-13-in-not
# net limit3-0-set => setp limit3.0.enable 1
# net limit3-0-clr => setp limit3.0.enable 0
The last two commented lines are giving me an error.
What I want to do is when I turn on pin 12, Enable is 1 and when I turn on pin 13, Enable is 0
I'm using the LIMIT3 component linuxcnc.org/docs/html/man/man9/limit3.9.html
how do I activate limit3.0.enable ?
I need to activate it with one parallel port button and deactivate it with the another.
# Limit 3 Enable Set / Clr
net limit3-0-set <= parport.0.pin-12-in-not
net limit3-0-clr <= parport.0.pin-13-in-not
# net limit3-0-set => setp limit3.0.enable 1
# net limit3-0-clr => setp limit3.0.enable 0
The last two commented lines are giving me an error.
What I want to do is when I turn on pin 12, Enable is 1 and when I turn on pin 13, Enable is 0
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31 Jan 2024 04:55 #292043
by zz912
Replied by zz912 on topic How to set a Bit in HAL
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31 Jan 2024 19:43 #292098
by wisao
Replied by wisao on topic How to set a Bit in HAL
Can you please show me a pratical example ? please
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31 Jan 2024 20:13 - 31 Jan 2024 20:24 #292100
by Aciera
Replied by Aciera on topic How to set a Bit in HAL
I think 'toggle2nist' is for a single momentary button to change the states of two complementary output signals. What is needed here is the opposite, two input signals to change the state of one output signal.
Are your input signals on the parallel port momentary signals (ie signal goes high when you press the button)?
[edit]
Maybe an sr latch would do the job (using two 'and2' and two 'not' components):
www.educative.io/answers/the-sr-latch
There may be a ready made component for this but I cannot find one.
Are your input signals on the parallel port momentary signals (ie signal goes high when you press the button)?
[edit]
Maybe an sr latch would do the job (using two 'and2' and two 'not' components):
www.educative.io/answers/the-sr-latch
There may be a ready made component for this but I cannot find one.
Last edit: 31 Jan 2024 20:24 by Aciera.
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31 Jan 2024 20:30 #292101
by tommylight
Replied by tommylight on topic How to set a Bit in HAL
Flip-flop?
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31 Jan 2024 22:31 #292109
by PCW
Replied by PCW on topic How to set a Bit in HAL
Yes, the flipflop component will work for this
since it has set and reset inputs:
loadrt flipflop
addf flipflop.0 servo-thread
loadrt limit3
addf limit3.0 servo-thread
net limit3-0-set <= parport.0.pin-12-in-not flipflop.0.set
net limit3-0-clr <= parport.0.pin-13-in-not flipflop.0.reset
net limit3-enable flipflop.0.out limit3.0.enable
since it has set and reset inputs:
loadrt flipflop
addf flipflop.0 servo-thread
loadrt limit3
addf limit3.0 servo-thread
net limit3-0-set <= parport.0.pin-12-in-not flipflop.0.set
net limit3-0-clr <= parport.0.pin-13-in-not flipflop.0.reset
net limit3-enable flipflop.0.out limit3.0.enable
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31 Jan 2024 23:14 #292110
by wisao
Replied by wisao on topic How to set a Bit in HAL
Thanks, it works very well, i really appreciate your help
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