Move axis_homed, axis_known_position to motion.*

Marlin/src/module/delta.cpp

@@ -73,7 +73,7 @@ void recalc_delta_settings() {
   delta_diagonal_rod_2_tower[B_AXIS] = sq(delta_diagonal_rod + drt[B_AXIS]);
   delta_diagonal_rod_2_tower[C_AXIS] = sq(delta_diagonal_rod + drt[C_AXIS]);
   update_software_endstops(Z_AXIS);
-  axis_homed = 0;
+  set_all_unhomed();
 }
 
 /**

Marlin/src/module/motion.cpp

@@ -68,6 +68,17 @@ XYZ_CONSTS(float, max_length,     MAX_LENGTH);
 XYZ_CONSTS(float, home_bump_mm,   HOME_BUMP_MM);
 XYZ_CONSTS(signed char, home_dir, HOME_DIR);
 
+/**
+ * axis_homed
+ *   Flags that each linear axis was homed.
+ *   XYZ on cartesian, ABC on delta, ABZ on SCARA.
+ *
+ * axis_known_position
+ *   Flags that the position is known in each linear axis. Set when homed.
+ *   Cleared whenever a stepper powers off, potentially losing its position.
+ */
+uint8_t axis_homed, axis_known_position; // = 0
+
 // Relative Mode. Enable with G91, disable with G90.
 bool relative_mode; // = false;
 

Marlin/src/module/motion.h

@@ -26,9 +26,7 @@
  * High-level motion commands to feed the planner
  * Some of these methods may migrate to the planner class.
  */
-
-#ifndef MOTION_H
-#define MOTION_H
+#pragma once
 
 #include "../inc/MarlinConfig.h"
 
@@ -36,6 +34,14 @@
   #include "../module/scara.h"
 #endif
 
+// Axis homed and known-position states
+extern uint8_t axis_homed, axis_known_position;
+constexpr uint8_t xyz_bits = _BV(X_AXIS) | _BV(Y_AXIS) | _BV(Z_AXIS);
+FORCE_INLINE bool all_axes_homed() { return (axis_homed & xyz_bits) == xyz_bits; }
+FORCE_INLINE bool all_axes_known() { return (axis_known_position & xyz_bits) == xyz_bits; }
+FORCE_INLINE void set_all_unhomed() { axis_homed = 0; }
+FORCE_INLINE void set_all_unknown() { axis_known_position = 0; }
+
 // Error margin to work around float imprecision
 constexpr float slop = 0.0001;
 
@@ -359,5 +365,3 @@ void homeaxis(const AxisEnum axis);
 #if HAS_M206_COMMAND
   void set_home_offset(const AxisEnum axis, const float v);
 #endif
-
-#endif // MOTION_H