(author: Chris P)
(version: 0.2)
(date: 06/27/24)

(Probe valley in x, find X zero valley center position)
(Start probe position is centered between valley walls)
(ensure all settings have been set properly according to help diagrams)

o<probe_valley_x_center_start> sub

  (uses NGCGUI style arg spec)
  (number after "=" in comment is default value)
  #<probe_tool_number> = #3014    (=99)
  #<probe_slow_fr> = #3015        (=0)
  #<probe_fast_fr> = #3016        (=10.0)
  #<probe_traverse_fr> = #3017    (=50)
  #<max_xy_distance> = #3018      (=0.5000)
  #<xy_clearance> = #3019         (=0.1000)
  #<max_z_distance> = #3020       (=0.5000)
  #<z_clearance> = #3021          (=0.1000)
  #<extra_probe_depth> = #3022    (=0.0000)  
  #<step_off_width> = #3023       (=0.5000)
  #<edge_width> = #3024           (=0.5000)
  #<x_hint_ridge_valley> = #3028  (=0)
  #<y_hint_ridge_valley> = #3029  (=0)
  #<probe_mode> = #3030           (=0)
  #<calibration_offset> = #3032   (=0)

  (Cancel G92 offsets)
  G92.1

  (Cancel Feedrate Override)
  M50 P0

  #<workspace_x> = #[5201 + [20 * #5220]]

  (Probe Tool Safety Check)
  o100 if [#5400 NE #<probe_tool_number>]
      (DEBUG, Specified probe tool %d#<probe_tool_number> not in spindle, aborting)
      M50 P1
      o<probe_valley_x_center_start> return
  o100 endif

  (Probe Diameter)
  #<probe_diameter> = #5410

  (remove probe tip diam and cal offset from probed width calculations)
  #<probe_diameter_offset> = [#<probe_diameter> - [#<calibration_offset> * 2]]

  (Call sub "probe_x_minus" to Probe x- side of Workpiece)
  o<probe_x_minus> call [#3014][#3015][#3016][3017][#3018 + #3028 / 2][#3019][#3032]

  #<x_minus_probed> = #5061

  (Call sub "probe_x_plus" to Probe x+ side of Workpiece)
  o<probe_x_plus> call [#3014][#3015][#3016][3017][#3018 + #3028][#3019][#3032]

  #<x_plus_probed> = #5061

  (probed center calculation)
  #<x_center_probed> = [[#<x_plus_probed> + #<x_minus_probed>] / 2]

  (calculate X Width Probed)
  #<raw_width> = [#<x_plus_probed> - #<x_minus_probed>]

  (Completed probed width calculations)
  #<x_probed_width> = [#<raw_width> + #<probe_diameter_offset>]

  #1001 = #<x_probed_width>
  (DEBUG, EVAL[vcp.getWidget{"x_probed_width"}.setValue{#1001}])

  #1002 = #<x_center_probed>
  (DEBUG, EVAL[vcp.getWidget{"x_center_probed"}.setValue{#1002}])

  (Probe Completion Move to X Zero)
  G90
  F[#<probe_traverse_fr>]
  G38.3 X[#<x_center_probed>]

  (probe mode rules for WCO or probe position measuring only)
  o110 if [#<probe_mode> EQ 0]
      (Record X Zero in selected WCO)
      G10 L2 P#5220 X[#<x_center_probed> + #<workspace_x>]
  o110 endif

  (Reinstate Feedrate Override)
  M50 P1

o<probe_valley_x_center_start> endsub

M2 (end program)