Is there a way to touch-off purely in HAL?
- chowderhead
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07 Mar 2024 18:32 #295423
by chowderhead
Is there a way to touch-off purely in HAL? was created by chowderhead
I'm writing a python HAL component that includes touching off and want to avoid importing linuxcnc and firing an mdi command if possible. Is there any way to do it using only HAL?
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07 Mar 2024 20:12 - 07 Mar 2024 20:15 #295426
by Mecanix
Replied by Mecanix on topic Is there a way to touch-off purely in HAL?
Mind you I have no idea what you're trying to achieve. Until we've figured that part out, try that just for fun:
1. Create a new file, call it "whatever.py"
2. Copy below code in it. Save it into your ~/chowderhead/
3. Start Axis, Un-stop & En it, home all.
4. Start terminal and type $ python3 ~/chowderhead/whatever.py
1. Create a new file, call it "whatever.py"
2. Copy below code in it. Save it into your ~/chowderhead/
3. Start Axis, Un-stop & En it, home all.
4. Start terminal and type $ python3 ~/chowderhead/whatever.py
#!/usr/bin/env python
feed = 300
from subprocess import call
call(['axis-remote','-m', 'G38.3 Z-10 F{}'.format(feed)])
Last edit: 07 Mar 2024 20:15 by Mecanix.
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07 Mar 2024 20:28 #295428
by Mecanix
Replied by Mecanix on topic Is there a way to touch-off purely in HAL?
Above method given being under the assumption you ain't fond of the unreliable c.mdi() that rarely wait. And I don't blame you. A way around that issue that I had luck with (sort of, still bugged) is with INTERP_IDLE. If you ever manage to write something up for rtai_api and achieve what you are trying to do (halrun/halcmd?), please share!
import linuxcnc
s = linuxcnc.stat()
c = linuxcnc.command()
def moveAxis(ax, pos, f):
try:
c.mode(linuxcnc.MODE_MDI)
c.wait_complete()
c.mdi('G1 {}{} F{}'.format(ax, pos, f))
s.poll()
while (s.interp_state != linuxcnc.INTERP_IDLE):
time.sleep(.01)
s.poll()
c.mode(linuxcnc.MODE_MANUAL)
except Exception as ex:
print('Error:', ex)
### call with
moveAxis(Z, -10, 300)
The following user(s) said Thank You: chowderhead
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24 Apr 2024 22:13 #299033
by bondglen
Replied by bondglen on topic Is there a way to touch-off purely in HAL?
I am also looking for a way to touch-off without using the keyboard.
I'm trying to build a remote pendant and want a button for touch-off.
I'm not using a USB/keyboard interface for my pendant, so I need to go thru HAL (I think).
I have looked at the previous reply, and don't really understand it. I am unfamiliar with python. I'm hoping to find a way to work with halcmd.
I'm trying to build a remote pendant and want a button for touch-off.
I'm not using a USB/keyboard interface for my pendant, so I need to go thru HAL (I think).
I have looked at the previous reply, and don't really understand it. I am unfamiliar with python. I'm hoping to find a way to work with halcmd.
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25 Apr 2024 07:33 - 25 Apr 2024 07:49 #299048
by Aciera
Replied by Aciera on topic Is there a way to touch-off purely in HAL?
Why not use an MDI_COMMAND:
forum.linuxcnc.org/38-general-linuxcnc-q...parallel-port#292850
Note: you can use any mdi command, it does not have to be an m-code. ie you could also define:
[HALUI]
MDI_COMMAND = G38.3 Z-20 F100
and then connect it to your button in hal:
net run-probe <= your_pin_here => halui.mdi-command-00
forum.linuxcnc.org/38-general-linuxcnc-q...parallel-port#292850
Note: you can use any mdi command, it does not have to be an m-code. ie you could also define:
[HALUI]
MDI_COMMAND = G38.3 Z-20 F100
and then connect it to your button in hal:
net run-probe <= your_pin_here => halui.mdi-command-00
Last edit: 25 Apr 2024 07:49 by Aciera.
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26 Apr 2024 01:17 #299090
by bondglen
Replied by bondglen on topic Is there a way to touch-off purely in HAL?
Thanks, I think a MDI command may work well for me.
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- chowderhead
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29 Apr 2024 17:00 #299328
by chowderhead
Replied by chowderhead on topic Is there a way to touch-off purely in HAL?
Sorry for the very late reply. Death in the family put all sideline projects on hold.
INTERP_IDLE has proven to be a mixed bag with other US components of mine. I'm looking at switching to C++ and getting a little lower level. If I have the chops.
INTERP_IDLE has proven to be a mixed bag with other US components of mine. I'm looking at switching to C++ and getting a little lower level. If I have the chops.
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- tommylight
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29 Apr 2024 18:52 #299334
by tommylight
Replied by tommylight on topic Is there a way to touch-off purely in HAL?
My condolences.
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