Add custom types for position (#15204)

Marlin/src/module/stepper.h

@@ -278,9 +278,9 @@ class Stepper {
     #endif
 
     // Delta error variables for the Bresenham line tracer
-    static int32_t delta_error[XYZE];
-    static uint32_t advance_dividend[XYZE],
-                    advance_divisor,
+    static xyze_long_t delta_error;
+    static xyze_ulong_t advance_dividend;
+    static uint32_t advance_divisor,
                     step_events_completed,  // The number of step events executed in the current block
                     accelerate_until,       // The point from where we need to stop acceleration
                     decelerate_after,       // The point from where we need to start decelerating
@@ -320,17 +320,17 @@ class Stepper {
     //
     // Exact steps at which an endstop was triggered
     //
-    static volatile int32_t endstops_trigsteps[XYZ];
+    static xyz_long_t endstops_trigsteps;
 
     //
     // Positions of stepper motors, in step units
     //
-    static volatile int32_t count_position[NUM_AXIS];
+    static xyze_long_t count_position;
 
     //
     // Current direction of stepper motors (+1 or -1)
     //
-    static int8_t count_direction[NUM_AXIS];
+    static xyze_int8_t count_direction;
 
   public:
 
@@ -382,13 +382,11 @@ class Stepper {
 
     // The extruder associated to the last movement
     FORCE_INLINE static uint8_t movement_extruder() {
-      return
-        #if ENABLED(MIXING_EXTRUDER) || EXTRUDERS < 2
-          0
-        #else
-          last_moved_extruder
+      return (0
+        #if EXTRUDERS > 1 && DISABLED(MIXING_EXTRUDER)
+          + last_moved_extruder
         #endif
-      ;
+      );
     }
 
     // Handle a triggered endstop
@@ -443,8 +441,9 @@ class Stepper {
       _set_position(a, b, c, e);
       if (was_enabled) ENABLE_STEPPER_DRIVER_INTERRUPT();
     }
+    static inline void set_position(const xyze_long_t &abce) { set_position(abce.a, abce.b, abce.c, abce.e); }
 
-    static inline void set_position(const AxisEnum a, const int32_t &v) {
+    static inline void set_axis_position(const AxisEnum a, const int32_t &v) {
       planner.synchronize();
 
       #ifdef __AVR__
@@ -469,6 +468,7 @@ class Stepper {
 
     // Set the current position in steps
     static void _set_position(const int32_t &a, const int32_t &b, const int32_t &c, const int32_t &e);
+    FORCE_INLINE static void _set_position(const abce_long_t &spos) { _set_position(spos.a, spos.b, spos.c, spos.e); }
 
     FORCE_INLINE static uint32_t calc_timer_interval(uint32_t step_rate, uint8_t scale, uint8_t* loops) {
       uint32_t timer;