feat: use stepper_z's rotation distance (#5)

macros/z_tramming.cfg

@@ -13,9 +13,6 @@ gcode:
   {% if config is undefined %}
     {action_raise_error("Missing _Z_TRAMMING_SETTINGS macro")}
   {% endif %}
-  {% if config.screw_lead is undefined %}
-    {action_raise_error("Missing screw_lead in _Z_TRAMMING_SETTINGS macro")}
-  {% endif %}
 
   {% set speed = config.speed | default(printer.configfile.settings.bed_mesh.speed) * 60 %}
 
@@ -61,7 +58,7 @@ gcode:
   {% set config = printer["gcode_macro _Z_TRAMMING_SETTINGS"] %}
   {% set probe = printer.configfile.settings.probe %}
   {% set tolerance = config.tolerance | default(probe.samples_tolerance * 2)%}
-  {% set screw_lead = config.screw_lead %}
+  {% set screw_lead = printer.configfile.settings.stepper_z.rotation_distance | float %}
   {% set lift_direction = config.lift_direction | default("CW") | upper %}
 
   {% if not lift_direction in ["CW", "CCW"] %}

macros/z_tramming_settings.cfg

@@ -1,6 +1,5 @@
 # This macro contains the configuration variables for the Z Tramming macro
 [gcode_macro _Z_TRAMMING_SETTINGS]
-# variable_screw_lead: 4 # Required! The lead of Z lead screws in mm. This is the distance the Z axis moves for one full rotation of the lead screw. It is calculated by measuring the pitch and counting the number of starts/threads.
 # variable_tolerance: 0.04 # Defaults to double the probe.samples_tolerance
 # variable_y_position: 51 # Defaults to probe at the center of bed
 # variable_left: 0 # Defaults to minmum position accounting for probe offset
@@ -9,12 +8,3 @@
 # variable_lift_direction: 'CW' # The direction to turn a lead screw to lift the bed. Defaults to CW. Either CW or CCW
 gcode:
 
-# This is an example for a Sovol SV06
-# [gcode_macro _Z_TRAMMING_SETTINGS]
-# variable_screw_lead: 4
-# gcode:
-
-# This is an example for a Sovol SV06 Plus
-# [gcode_macro _Z_TRAMMING_SETTINGS]
-# variable_screw_lead: 4
-# gcode: