--- /dev/null
+Bottom: 8e7c9dfe8f9c1b267a41ef831eba608dc172e6a5
+Top: 451054c63dfecb31617488c7273ffe5e83319126
+Author: Ian Jackson <ijackson@chiark.greenend.org.uk>
+Date: 2012-08-08 18:43:41 +0100
+
+Refresh of homeaxis-function
+
+---
+
+diff --git a/Marlin/Marlin.pde b/Marlin/Marlin.pde
+index 1dec2b8..50abc18 100644
+--- a/Marlin/Marlin.pde
++++ b/Marlin/Marlin.pde
+@@ -551,40 +551,55 @@ bool code_seen(char code)
+ return (strchr_pointer != NULL); //Return True if a character was found
+ }
+
+-static const float base_min_pos[3] = { X_MIN_POS, Y_MIN_POS, Z_MIN_POS };
+-static const float base_home_pos[3] = { X_HOME_POS, Y_HOME_POS, Z_HOME_POS };
++#define XYZ_CONSTS_FROM_CONFIG(type, array, CONFIG) \
++static const type array[3] = { X_##CONFIG, Y_##CONFIG, Z_##CONFIG };
++
++XYZ_CONSTS_FROM_CONFIG(float, base_min_pos, MIN_POS);
++XYZ_CONSTS_FROM_CONFIG(float, base_home_pos, HOME_POS);
++XYZ_CONSTS_FROM_CONFIG(float, max_length, MAX_LENGTH);
++XYZ_CONSTS_FROM_CONFIG(float, home_retract_mm, HOME_RETRACT_MM);
++XYZ_CONSTS_FROM_CONFIG(signed char, home_dir, HOME_DIR);
+
+ static void axis_is_at_home(int axis) {
+ current_position[axis] = base_home_pos[axis] + add_homeing[axis];
+ min_pos[axis] = base_min_pos[axis] + add_homeing[axis];
+ }
+
+-#define HOMEAXIS(LETTER) \
+- if ((LETTER##_MIN_PIN > -1 && LETTER##_HOME_DIR==-1) || (LETTER##_MAX_PIN > -1 && LETTER##_HOME_DIR==1))\
+- { \
+- current_position[LETTER##_AXIS] = 0; \
+- plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]); \
+- destination[LETTER##_AXIS] = 1.5 * LETTER##_MAX_LENGTH * LETTER##_HOME_DIR; \
+- feedrate = homing_feedrate[LETTER##_AXIS]; \
+- plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder); \
+- st_synchronize();\
+- \
+- current_position[LETTER##_AXIS] = 0;\
+- plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);\
+- destination[LETTER##_AXIS] = -LETTER##_HOME_RETRACT_MM * LETTER##_HOME_DIR;\
+- plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder); \
+- st_synchronize();\
+- \
+- destination[LETTER##_AXIS] = 2*LETTER##_HOME_RETRACT_MM * LETTER##_HOME_DIR;\
+- feedrate = homing_feedrate[LETTER##_AXIS]/2 ; \
+- plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder); \
+- st_synchronize();\
+- \
+- axis_is_at_home(LETTER##_AXIS); \
+- destination[LETTER##_AXIS] = current_position[LETTER##_AXIS]; \
+- feedrate = 0.0;\
+- endstops_hit_on_purpose();\
++static void homeaxis(int axis) {
++#define HOMEAXIS_DO_BIT(LETTER) \
++ ((LETTER##_MIN_PIN > -1 && LETTER##_HOME_DIR==-1) || (LETTER##_MAX_PIN > -1 && LETTER##_HOME_DIR==1) ? 1 << LETTER##_AXIS : 0)
++
++ static const unsigned char doaxis =
++ HOMEAXIS_DO_BIT(X) |
++ HOMEAXIS_DO_BIT(Y) |
++ HOMEAXIS_DO_BIT(Z);
++
++ if (doaxis & (1<<axis)) {
++ current_position[axis] = 0;
++ plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
++ destination[axis] = 1.5 * max_length[axis] * home_dir[axis];
++ feedrate = homing_feedrate[axis];
++ plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
++ st_synchronize();
++
++ current_position[axis] = 0;
++ plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
++ destination[axis] = -home_retract_mm[axis] * home_dir[axis];
++ plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
++ st_synchronize();
++
++ destination[axis] = 2*home_retract_mm[axis] * home_dir[axis];
++ feedrate = homing_feedrate[axis]/2 ;
++ plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
++ st_synchronize();
++
++ axis_is_at_home(axis);
++ destination[axis] = current_position[axis];
++ feedrate = 0.0;
++ endstops_hit_on_purpose();
+ }
++}
++#define HOMEAXIS(LETTER) homeaxis(LETTER##_AXIS)
+
+ void process_commands()
+ {