🚸 Fix, extend X Axis Twist Compensation (#23745)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/gcode/calibrate/G33.cpp

@@ -98,8 +98,7 @@ void ac_cleanup(TERN_(HAS_MULTI_HOTEND, const uint8_t old_tool_index)) {
 void print_signed_float(FSTR_P const prefix, const_float_t f) {
   SERIAL_ECHOPGM("  ");
   SERIAL_ECHOF(prefix, AS_CHAR(':'));
-  if (f >= 0) SERIAL_CHAR('+');
-  SERIAL_ECHO_F(f, 2);
+  serial_offset(f);
 }
 
 /**

Marlin/src/gcode/gcode.h

@@ -1195,6 +1195,11 @@ private:
     static void M1000();
   #endif
 
+  #if ENABLED(X_AXIS_TWIST_COMPENSATION)
+    static void M423();
+    static void M423_report(const bool forReplay=true);
+  #endif
+
   #if ENABLED(SDSUPPORT)
     static void M1001();
   #endif

Marlin/src/gcode/probe/M423.cpp

@@ -0,0 +1,99 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * M423.cpp - X-Axis Twist Compensation
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(X_AXIS_TWIST_COMPENSATION)
+
+#include "../gcode.h"
+#include "../../feature/x_twist.h"
+#include "../../module/probe.h"
+
+/**
+ * M423: Set a Z offset for X-Twist (added to the mesh on future G29).
+ *  M423 [R] [A<startx>] [I<interval>] [X<index> Z<offset>]
+ *
+ *    R         - Reset the twist compensation data
+ *    A<linear> - Set the X twist starting X position
+ *    E<linear> - Set the X twist ending X position
+ *    I<linear> - Set the X twist X-spacing directly
+ *    X<index>  - Index of a Z value in the list
+ *    Z<linear> - A Z value to set
+ */
+void GcodeSuite::M423() {
+
+  bool do_report = true;
+  float new_spacing = 0;
+
+  if (parser.seen_test('R')) {
+    do_report = false;
+    xatc.reset();
+  }
+  if (parser.seenval('A')) {
+    do_report = false;
+    xatc.start = parser.value_float();
+    new_spacing = (probe.max_x() - xatc.start) / (XATC_MAX_POINTS - 1);
+  }
+  if (parser.seenval('E')) {
+    do_report = false;
+    new_spacing = (parser.value_float() - xatc.start) / (XATC_MAX_POINTS - 1);
+  }
+  else if (parser.seenval('I')) {
+    do_report = false;
+    new_spacing = parser.value_float();
+  }
+
+  if (new_spacing) xatc.spacing = new_spacing;
+
+  if (parser.seenval('X')) {
+    do_report = false;
+    const int8_t x = parser.value_int();
+    if (!WITHIN(x, 0, XATC_MAX_POINTS - 1))
+      SERIAL_ECHOLNPGM("?(X) out of range (0..", XATC_MAX_POINTS - 1, ").");
+    else {
+      if (parser.seenval('Z'))
+        xatc.z_offset[x] = parser.value_linear_units();
+      else
+        SERIAL_ECHOLNPGM("?(Z) required.");
+    }
+  }
+
+  if (do_report) M423_report();
+
+}
+
+void GcodeSuite::M423_report(const bool forReplay/*=true*/) {
+  report_heading(forReplay, F("X-Twist Correction"));
+  SERIAL_ECHOLNPGM("  M423 A", xatc.start, " I", xatc.spacing);
+  LOOP_L_N(x, XATC_MAX_POINTS) {
+    const float z = xatc.z_offset[x];
+    SERIAL_ECHOPGM("  M423 X", x, " Z");
+    serial_offset(isnan(z) ? 0 : z);
+    SERIAL_EOL();
+  }
+}
+
+#endif // X_AXIS_TWIST_COMPENSATION