User input / dialog box in EMC2
22 Jul 2014 07:11 #49005
by andypugh
This seems like it should be easier than it is. Here is one way that I think will work. It takes advantage of the fact that it is possible to set the state of mist-cooling (and other things, but mist seemed likely to be spare) from Python, and it is possible to read back the mist status in G-code (but only in version 2.6+, you will need to upgrade, packages are available from buildbot.linuxcnc.org)
Create a file called M101 (capital M) and place it in nc_files, it needs to be set to executable (right-click, properties, "allow execution") The contents should be
A sample usage g-code file:
I haven't actually tested it
, the VM I have on this machine is 2.5.4. However it very nearly worked using linuxcnc.command().mdi("#<retval> = 1") and I only abandoned that much neater approach when I realised that would be in "AUTO" mode when running G-code so command().mdi wouldn't be valid.
The docs on the three things used here are:
www.linuxcnc.org/docs/html/gcode/m-code.html#sec:M100-to-M199
www.linuxcnc.org/docs/2.6/html/gcode/ove...ub:system-parameters
linuxcnc.org/docs/html/common/python-int..._linuxcnc_command_tt
Replied by andypugh on topic User input / dialog box in EMC2
I'm new to EMC2 and want to know if it is possible to use keyboard input to change the execution of a gcode program. E.g. I want to ask the user if a desired position is reached. Depending on the answer (yes/no) the program will continue with different subroutines.
This seems like it should be easier than it is. Here is one way that I think will work. It takes advantage of the fact that it is possible to set the state of mist-cooling (and other things, but mist seemed likely to be spare) from Python, and it is possible to read back the mist status in G-code (but only in version 2.6+, you will need to upgrade, packages are available from buildbot.linuxcnc.org)
Create a file called M101 (capital M) and place it in nc_files, it needs to be set to executable (right-click, properties, "allow execution") The contents should be
#!/usr/bin/python
import Tkinter
import tkMessageBox
import linuxcnc
if tkMessageBox.askyesno("Finished", "Are we nearly there yet?"):
linuxcnc.command().mist(1)
exit(0)
linuxcnc.command()mist(0)
exit(0)A sample usage g-code file:
M101
O100 if [#<_mist> GT 0.5]
G0 X1
O100 else
G0 X0
O100 endif
M2I haven't actually tested it
, the VM I have on this machine is 2.5.4. However it very nearly worked using linuxcnc.command().mdi("#<retval> = 1") and I only abandoned that much neater approach when I realised that would be in "AUTO" mode when running G-code so command().mdi wouldn't be valid.The docs on the three things used here are:
www.linuxcnc.org/docs/html/gcode/m-code.html#sec:M100-to-M199
www.linuxcnc.org/docs/2.6/html/gcode/ove...ub:system-parameters
linuxcnc.org/docs/html/common/python-int..._linuxcnc_command_tt
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22 Jul 2014 15:49 #49007
by mp@cnc
Replied by mp@cnc on topic User input / dialog box in EMC2
Wow, that is exactly what I was looking for.
Thanks!
Thanks!
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24 Jul 2014 02:19 #49062
by andypugh
Does it work?
I just realised that I have already written a python routine that creates params on the fly, but I can't figure out where it imported the capability from...
I think it might be the emccanon library, that is not necessarily available in 2.5.4. (But is in 2.6)
Replied by andypugh on topic User input / dialog box in EMC2
Wow, that is exactly what I was looking for.
Does it work?
I just realised that I have already written a python routine that creates params on the fly, but I can't figure out where it imported the capability from...
I think it might be the emccanon library, that is not necessarily available in 2.5.4. (But is in 2.6)
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