I’m trying to measure nozzle offsets (x+,x-,y+,y-,z) using a series of microswitches attached to the bed. I thought that this would be simple task but I have run into the issue of the variables being evaluated at the beginning of the macro execution. I have tried having multiple macros one for querying the switches and another for preforming the step logic but no luck, i have also tried writing to a variable using press_gcode: but this hasn’t worked either.
Other people seem to be able to do nozzle probing with macros. so what is the trick ?
for info I have a EBB42 board on my heat bed setup as a canbus [MCU] and all the microswitches all query correctly from the console.
ok I finally found the correct combination of spaces, tabs and carriage returns to get kipper to start without an error with this code
[gcode_macro SWITCH_TEST]
gcode:
{% for step in range(10) %}
QUERY_BUTTON BUTTON=zswitch
G4 P2000
{% if printer["gcode_button zswitch"].state == 'PRESSED' %}
M118 PRE SSED !!
{% else %}
M118 NOT PRES SED !!
{% endif %}
{% endfor %}
except that it seems to have stopped my loop from working correctly
I assume that this is because the whitespaces are resetting the step variable somehow
This is really strange. I’ve looked through the DynamicMacros code and all I can say is that DynamicMacros won’t home the printer unless there’s a G28 command in a macro it’s instructed to call.
I discovered that the behavior of the macro would vary depending on where in the dynamic.cfg the macro was pasted.
It turns out I had another example macro with a g28 command in it.
this macro had a space before the “[” so it was " [gcode_macro DYNAMIC_MOVE]" insted of “[gcode_macro DYNAMIC_MOVE]”
This was causing some weird behavior
The following code correctly choses its conditional statement depending on the switch’s physical state
Blockquote
[gcode_macro SWITCH_TEST]
gcode:
{% set num = params.NUM|default(1)|int %}
{% if num <= 10 %}
QUERY_BUTTON BUTTON=zswitch
G4 P2000
{% if printer[“gcode_button zswitch”].state == ‘PRESSED’ %}
M118 PRE SSED !!
{% else %}
M118 NOT PRES SED !!
{% endif %}
SWITCH_TEST NUM={num+1} # Count up 1
{% else %}
RESPOND MSG=“Done Counting”
{% endif %}
Im still getting used to the whitespace syntax. and getting the formatting in a suitable state to run without errors.
Ill come back and update this post with a more polished working example for the benefit of future googlers.
OK So i can sucessfully decend to the z limit switch and stop using the dynamic macro
Blockquote
[gcode_macro Z_DEC]
gcode:
G91
{% set num = params.NUM|default(1)|int %}
{% if num <= 100 %}
G4 P100
QUERY_BUTTON BUTTON=zswitch
{% if printer[“gcode_button zswitch”].state == ‘PRESSED’ %}
{% set num = 100 %}
{% else %}
G1 Z-0.05 #M118 {printer.toolhead.position.z}
Z_DEC NUM={num+1} # Count u
{% endif %}
{% else %}
RESPOND MSG=“Done Decrementing Z”
{% endif %}
G90
And that stops the Z axis at the correct location but im still having a heck of a time trying to get that Zposition back up to the macro that called it
I get
Error loading template ‘LOOP_TEST’: jinja2.exceptions.TemplateSyntaxError: Unexpected end of template. Jinja was looking for the following tags: ‘endfor’ or ‘else’. The innermost block that needs to be closed is ‘for’.
it seams that any time i put the three (ive allso tried adding just two incase the existing newline counts) inside a macro that has any jinja expressions it throws that error
I tried using get_macro_variables() and SET_DYNAMIC_VARIABLE but they allways seem to return blank data as dose update()
ive got no idea i just pushed the " button and pasted the code in… thats not the whole code snippit either theres suposed to be three caragige returns that form part of the code, honestly i have no idea what the deal is with jinja formatting.
?