Add reporting to M290 (#15376)

Marlin/src/feature/babystep.cpp

 Babystep babystep;
 
 volatile int16_t Babystep::steps[BS_TODO_AXIS(Z_AXIS) + 1];
-
-#if HAS_LCD_MENU || ENABLED(EXTENSIBLE_UI)
-  int16_t Babystep::accum;
-  #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
-    int16_t Babystep::axis_total[BS_TOTAL_AXIS(Z_AXIS) + 1];
-  #endif
+#if ENABLED(BABYSTEP_DISPLAY_TOTAL)
+  int16_t Babystep::axis_total[BS_TOTAL_AXIS(Z_AXIS) + 1];
 #endif
+int16_t Babystep::accum;
 
 void Babystep::step_axis(const AxisEnum axis) {
   const int16_t curTodo = steps[BS_TODO_AXIS(axis)]; // get rid of volatile for performance
 
   if (!CAN_BABYSTEP(axis)) return;
 
-  #if HAS_LCD_MENU || ENABLED(EXTENSIBLE_UI)
-    accum += distance; // Count up babysteps for the UI
-    #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
-      axis_total[BS_TOTAL_AXIS(axis)] += distance;
-    #endif
+  accum += distance; // Count up babysteps for the UI
+  #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
+    axis_total[BS_TOTAL_AXIS(axis)] += distance;
   #endif
 
   #if ENABLED(BABYSTEP_ALWAYS_AVAILABLE)

Marlin/src/feature/babystep.h

   #define BS_TODO_AXIS(A) 0
 #endif
 
-#if (HAS_LCD_MENU || ENABLED(EXTENSIBLE_UI)) && ENABLED(BABYSTEP_DISPLAY_TOTAL)
+#if ENABLED(BABYSTEP_DISPLAY_TOTAL)
   #if ENABLED(BABYSTEP_XY)
     #define BS_TOTAL_AXIS(A) A
   #else
 class Babystep {
 public:
   static volatile int16_t steps[BS_TODO_AXIS(Z_AXIS) + 1];
-
-  #if HAS_LCD_MENU || ENABLED(EXTENSIBLE_UI)
-
-    static int16_t accum;                                     // Total babysteps in current edit
-
-    #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
-      static int16_t axis_total[BS_TOTAL_AXIS(Z_AXIS) + 1];   // Total babysteps since G28
-      static inline void reset_total(const AxisEnum axis) {
-        if (true
-          #if ENABLED(BABYSTEP_XY)
-            && axis == Z_AXIS
-          #endif
-        ) axis_total[BS_TOTAL_AXIS(axis)] = 0;
-      }
-    #endif
-
+  static int16_t accum;                                     // Total babysteps in current edit
+
+  #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
+    static int16_t axis_total[BS_TOTAL_AXIS(Z_AXIS) + 1];   // Total babysteps since G28
+    static inline void reset_total(const AxisEnum axis) {
+      if (true
+        #if ENABLED(BABYSTEP_XY)
+          && axis == Z_AXIS
+        #endif
+      ) axis_total[BS_TOTAL_AXIS(axis)] = 0;
+    }
   #endif
 
   static void add_steps(const AxisEnum axis, const int16_t distance);

Marlin/src/gcode/motion/M290.cpp

   #include "../../core/serial.h"
 #endif
 
+#if ENABLED(MESH_BED_LEVELING)
+  #include "../../feature/bedlevel/bedlevel.h"
+#endif
+
 #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
 
   FORCE_INLINE void mod_zprobe_zoffset(const float &offs) {
 /**
  * M290: Babystepping
  *
+ * Send 'R' or no parameters for a report.
+ *
  *  X<linear> - Distance to step X
  *  Y<linear> - Distance to step Y
  *  Z<linear> - Distance to step Z
  *  S<linear> - Distance to step Z (alias for Z)
  *
  * With BABYSTEP_ZPROBE_OFFSET:
- *         P0 - Don't adjust the Z probe offset.
+ *  P0 - Don't adjust the Z probe offset
  */
 void GcodeSuite::M290() {
   #if ENABLED(BABYSTEP_XY)
       #endif
     }
   #endif
+
+  if (!parser.seen("XYZ") || parser.seen('R')) {
+    SERIAL_ECHO_START();
+
+    #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
+      SERIAL_ECHOLNPAIR(MSG_PROBE_OFFSET " " MSG_Z, probe_offset[Z_AXIS]);
+    #endif
+
+    #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
+    {
+      SERIAL_ECHOLNPAIR("Hotend ", int(active_extruder), "Offset"
+        #if ENABLED(BABYSTEP_XY)
+          " X", hotend_offset[X_AXIS][active_extruder],
+          " Y", hotend_offset[Y_AXIS][active_extruder],
+        #endif
+        " Z", hotend_offset[Z_AXIS][active_extruder]
+      );
+    }
+    #endif
+
+    #if ENABLED(MESH_BED_LEVELING)
+      SERIAL_ECHOLNPAIR("MBL Adjust Z", mbl.z_offset);
+    #endif
+
+    #if ENABLED(BABYSTEP_DISPLAY_TOTAL)
+    {
+      SERIAL_ECHOLNPAIR("Babystep"
+        #if ENABLED(BABYSTEP_XY)
+          " X", babystep.axis_total[X_AXIS],
+          " Y", babystep.axis_total[Y_AXIS],
+        #endif
+        " Z", babystep.axis_total[Z_AXIS]
+      );
+    }
+    #endif
+  }
 }
 
 #endif // BABYSTEPPING