Merge pull request #1876 from thinkyhead/cold_extrude

Catch dangerous extrude before trying several

Marlin/ConfigurationStore.cpp

   #ifdef DELTA
     SERIAL_ECHO_START;
     if (!forReplay) {
-      SERIAL_ECHOLNPGM("Endstop adjustement (mm):");
+      SERIAL_ECHOLNPGM("Endstop adjustment (mm):");
       SERIAL_ECHO_START;
     }
     SERIAL_ECHOPAIR("  M666 X", endstop_adj[X_AXIS] );
   #elif defined(Z_DUAL_ENDSTOPS)
     SERIAL_ECHO_START;
     if (!forReplay) {
-      SERIAL_ECHOLNPGM("Z2 Endstop adjustement (mm):");
+      SERIAL_ECHOLNPGM("Z2 Endstop adjustment (mm):");
       SERIAL_ECHO_START;
     }
     SERIAL_ECHOPAIR("  M666 Z", z_endstop_adj );

Marlin/Marlin.h

   extern float zprobe_zoffset;
 #endif
 
+#ifdef PREVENT_DANGEROUS_EXTRUDE
+  extern float extrude_min_temp;
+#endif
+
 extern int fanSpeed;
 
 #ifdef BARICUDA

Marlin/Marlin_main.cpp

 void get_arc_coordinates();
 bool setTargetedHotend(int code);
 
-void serial_echopair_P(const char *s_P, float v)
-    { serialprintPGM(s_P); SERIAL_ECHO(v); }
-void serial_echopair_P(const char *s_P, double v)
-    { serialprintPGM(s_P); SERIAL_ECHO(v); }
-void serial_echopair_P(const char *s_P, unsigned long v)
-    { serialprintPGM(s_P); SERIAL_ECHO(v); }
+void serial_echopair_P(const char *s_P, float v)         { serialprintPGM(s_P); SERIAL_ECHO(v); }
+void serial_echopair_P(const char *s_P, double v)        { serialprintPGM(s_P); SERIAL_ECHO(v); }
+void serial_echopair_P(const char *s_P, unsigned long v) { serialprintPGM(s_P); SERIAL_ECHO(v); }
+
+#ifdef PREVENT_DANGEROUS_EXTRUDE
+  float extrude_min_temp = EXTRUDE_MINTEMP;
+#endif
 
 #ifdef SDSUPPORT
   #include "SdFatUtil.h"
 inline void line_to_z(float zPosition) {
   plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], zPosition, current_position[E_AXIS], feedrate/60, active_extruder);
 }
+inline void line_to_destination(float mm_m) {
+  plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], mm_m/60, active_extruder);
+}
 inline void line_to_destination() {
-  plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
+  line_to_destination(feedrate);
 }
 inline void sync_plan_position() {
   plan_set_position(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
 
 #ifdef PREVENT_DANGEROUS_EXTRUDE
 
+  void set_extrude_min_temp(float temp) { extrude_min_temp = temp; }
+
   /**
    * M302: Allow cold extrudes, or set the minimum extrude S<temperature>.
    */
 void prepare_move() {
   clamp_to_software_endstops(destination);
   refresh_cmd_timeout();
-  
+
+  #ifdef PREVENT_DANGEROUS_EXTRUDE
+    float de = destination[E_AXIS] - current_position[E_AXIS];
+    if (de) {
+      if (degHotend(active_extruder) < extrude_min_temp) {
+        current_position[E_AXIS] = destination[E_AXIS]; // Behave as if the move really took place, but ignore E part
+        SERIAL_ECHO_START;
+        SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
+      }
+      #ifdef PREVENT_LENGTHY_EXTRUDE
+        if (labs(de) > EXTRUDE_MAXLENGTH) {
+          current_position[E_AXIS] = destination[E_AXIS]; // Behave as if the move really took place, but ignore E part
+          SERIAL_ECHO_START;
+          SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
+        }
+      #endif
+    }
+  #endif
+
   #ifdef SCARA //for now same as delta-code
 
     float difference[NUM_AXIS];
     for (int8_t i = 0; i < NUM_AXIS; i++) difference[i] = destination[i] - current_position[i];
 
-    float cartesian_mm = sqrt(  sq(difference[X_AXIS]) +
-                                sq(difference[Y_AXIS]) +
-                                sq(difference[Z_AXIS]));
+    float cartesian_mm = sqrt(sq(difference[X_AXIS]) + sq(difference[Y_AXIS]) + sq(difference[Z_AXIS]));
     if (cartesian_mm < 0.000001) { cartesian_mm = abs(difference[E_AXIS]); }
     if (cartesian_mm < 0.000001) { return; }
     float seconds = 6000 * cartesian_mm / feedrate / feedmultiply;
 
     for (int s = 1; s <= steps; s++) {
       float fraction = float(s) / float(steps);
-      for(int8_t i = 0; i < NUM_AXIS; i++) {
-        destination[i] = current_position[i] + difference[i] * fraction;
-      }
+      for (int8_t i = 0; i < NUM_AXIS; i++) destination[i] = current_position[i] + difference[i] * fraction;
   
       calculate_delta(destination);
       //SERIAL_ECHOPGM("destination[X_AXIS]="); SERIAL_ECHOLN(destination[X_AXIS]);
       //SERIAL_ECHOPGM("delta[Y_AXIS]="); SERIAL_ECHOLN(delta[Y_AXIS]);
       //SERIAL_ECHOPGM("delta[Z_AXIS]="); SERIAL_ECHOLN(delta[Z_AXIS]);
 
-      plan_buffer_line(delta[X_AXIS], delta[Y_AXIS], delta[Z_AXIS],
-        destination[E_AXIS], feedrate*feedmultiply/60/100.0,
-        active_extruder);
+      plan_buffer_line(delta[X_AXIS], delta[Y_AXIS], delta[Z_AXIS], destination[E_AXIS], feedrate*feedmultiply/60/100.0, active_extruder);
     }
 
   #endif // SCARA
     float difference[NUM_AXIS];
     for (int8_t i=0; i < NUM_AXIS; i++) difference[i] = destination[i] - current_position[i];
 
-    float cartesian_mm = sqrt(sq(difference[X_AXIS]) +
-                              sq(difference[Y_AXIS]) +
-                              sq(difference[Z_AXIS]));
+    float cartesian_mm = sqrt(sq(difference[X_AXIS]) + sq(difference[Y_AXIS]) + sq(difference[Z_AXIS]));
     if (cartesian_mm < 0.000001) cartesian_mm = abs(difference[E_AXIS]);
     if (cartesian_mm < 0.000001) return;
     float seconds = 6000 * cartesian_mm / feedrate / feedmultiply;
       #ifdef ENABLE_AUTO_BED_LEVELING
         adjust_delta(destination);
       #endif
-      plan_buffer_line(delta[X_AXIS], delta[Y_AXIS], delta[Z_AXIS],
-                       destination[E_AXIS], feedrate*feedmultiply/60/100.0,
-                       active_extruder);
+      plan_buffer_line(delta[X_AXIS], delta[Y_AXIS], delta[Z_AXIS], destination[E_AXIS], feedrate*feedmultiply/60/100.0, active_extruder);
     }
 
   #endif // DELTA
       if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && active_extruder == 0) {
         // move duplicate extruder into correct duplication position.
         plan_set_position(inactive_extruder_x_pos, current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS]);
-        plan_buffer_line(current_position[X_AXIS] + duplicate_extruder_x_offset, current_position[Y_AXIS], current_position[Z_AXIS],
-            current_position[E_AXIS], max_feedrate[X_AXIS], 1);
+        plan_buffer_line(current_position[X_AXIS] + duplicate_extruder_x_offset,
+          current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], max_feedrate[X_AXIS], 1);
         sync_plan_position();
         st_synchronize();
         extruder_duplication_enabled = true;
       }
       else if (dual_x_carriage_mode == DXC_AUTO_PARK_MODE) { // handle unparking of head
         if (current_position[E_AXIS] == destination[E_AXIS]) {
-          // this is a travel move - skit it but keep track of current position (so that it can later
-          // be used as start of first non-travel move)
+          // This is a travel move (with no extrusion)
+          // Skip it, but keep track of the current position
+          // (so it can be used as the start of the next non-travel move)
           if (delayed_move_time != 0xFFFFFFFFUL) {
             set_current_to_destination();
-            if (destination[Z_AXIS] > raised_parked_position[Z_AXIS])
-              raised_parked_position[Z_AXIS] = destination[Z_AXIS];
+            if (destination[Z_AXIS] > raised_parked_position[Z_AXIS]) raised_parked_position[Z_AXIS] = destination[Z_AXIS];
             delayed_move_time = millis();
             return;
           }
         }
         delayed_move_time = 0;
         // unpark extruder: 1) raise, 2) move into starting XY position, 3) lower
-        plan_buffer_line(raised_parked_position[X_AXIS], raised_parked_position[Y_AXIS], raised_parked_position[Z_AXIS],    current_position[E_AXIS], max_feedrate[Z_AXIS], active_extruder);
-        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], raised_parked_position[Z_AXIS],
-            current_position[E_AXIS], min(max_feedrate[X_AXIS],max_feedrate[Y_AXIS]), active_extruder);
-        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS],
-            current_position[E_AXIS], max_feedrate[Z_AXIS], active_extruder);
+        plan_buffer_line(raised_parked_position[X_AXIS], raised_parked_position[Y_AXIS], raised_parked_position[Z_AXIS], current_position[E_AXIS], max_feedrate[Z_AXIS], active_extruder);
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], raised_parked_position[Z_AXIS], current_position[E_AXIS], min(max_feedrate[X_AXIS], max_feedrate[Y_AXIS]), active_extruder);
+        plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], max_feedrate[Z_AXIS], active_extruder);
         active_extruder_parked = false;
       }
     }
 
   #if !defined(DELTA) && !defined(SCARA)
     // Do not use feedmultiply for E or Z only moves
-    if ( (current_position[X_AXIS] == destination [X_AXIS]) && (current_position[Y_AXIS] == destination [Y_AXIS])) {
+    if (current_position[X_AXIS] == destination[X_AXIS] && current_position[Y_AXIS] == destination[Y_AXIS]) {
       line_to_destination();
     }
     else {
         mesh_plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], (feedrate/60)*(feedmultiply/100.0), active_extruder);
         return;
       #else
-        plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], (feedrate/60)*(feedmultiply/100.0), active_extruder);
+        line_to_destination(feedrate * feedmultiply / 100.0);
       #endif  // MESH_BED_LEVELING
     }
   #endif // !(DELTA || SCARA)

Marlin/planner.cpp

 //===========================================================================
 //=============================private variables ============================
 //===========================================================================
-#ifdef PREVENT_DANGEROUS_EXTRUDE
-  float extrude_min_temp = EXTRUDE_MINTEMP;
-#endif
 #ifdef XY_FREQUENCY_LIMIT
   // Used for the frequency limit
   #define MAX_FREQ_TIME (1000000.0/XY_FREQUENCY_LIMIT)
   #ifdef PREVENT_DANGEROUS_EXTRUDE
     if (de) {
       if (degHotend(active_extruder) < extrude_min_temp) {
-        position[E_AXIS] = target[E_AXIS]; //behave as if the move really took place, but ignore E part
+        position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
         de = 0; // no difference
         SERIAL_ECHO_START;
         SERIAL_ECHOLNPGM(MSG_ERR_COLD_EXTRUDE_STOP);
   st_set_e_position(position[E_AXIS]);
 }
 
-#ifdef PREVENT_DANGEROUS_EXTRUDE
-  void set_extrude_min_temp(float temp) { extrude_min_temp = temp; }
-#endif
-
 // Calculate the steps/s^2 acceleration rates, based on the mm/s^s
 void reset_acceleration_rates() {
   for (int i = 0; i < NUM_AXIS; i++)

Marlin/planner.h

     return NULL;
 }
 
-#ifdef PREVENT_DANGEROUS_EXTRUDE
-  void set_extrude_min_temp(float temp);
-#endif
-
 void reset_acceleration_rates();
 
-#endif //PLANNER_H
+#endif // PLANNER_H