Minimum temp options for Probing and G12 Nozzle Clean

Marlin/Configuration.h

@@ -1057,6 +1057,10 @@
 //#define PROBING_STEPPERS_OFF      // Turn steppers off (unless needed to hold position) when probing
 //#define DELAY_BEFORE_PROBING 200  // (ms) To prevent vibrations from triggering piezo sensors
 
+// Require minimum nozzle or bed temperature for probing. Currently applies only to the first extruder.
+//#define PROBE_REQUIRES_MINTEMP_NOZZLE 150
+//#define PROBE_REQUIRES_MINTEMP_BED     50
+
 // For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
 // :{ 0:'Low', 1:'High' }
 #define X_ENABLE_ON 0
@@ -1646,6 +1650,13 @@
   // For a purge/clean station mounted on the X axis
   //#define NOZZLE_CLEAN_NO_Y
 
+  //#define NOZZLE_CLEAN_MIN_TEMP
+  #if ENABLED(NOZZLE_CLEAN_MIN_TEMP)
+    #define NOZZLE_CLEAN_TEMP  170
+    // Heat nozzle if temperature is too low. Default behavior is to skip cleaning.
+    //#define NOZZLE_CLEAN_HEAT_LOWTEMP
+  #endif
+
   // Explicit wipe G-code script applies to a G12 with no arguments.
   //#define WIPE_SEQUENCE_COMMANDS "G1 X-17 Y25 Z10 F4000\nG1 Z1\nM114\nG1 X-17 Y25\nG1 X-17 Y95\nG1 X-17 Y25\nG1 X-17 Y95\nG1 X-17 Y25\nG1 X-17 Y95\nG1 X-17 Y25\nG1 X-17 Y95\nG1 X-17 Y25\nG1 X-17 Y95\nG1 X-17 Y25\nG1 X-17 Y95\nG1 Z15\nM400\nG0 X-10.0 Y-9.0"
 

Marlin/src/libs/nozzle.cpp

@@ -31,6 +31,10 @@ Nozzle nozzle;
 #include "../MarlinCore.h"
 #include "../module/motion.h"
 
+#if ENABLED(NOZZLE_CLEAN_MIN_TEMP)
+  #include "../module/temperature.h"
+#endif
+
 #if ENABLED(NOZZLE_CLEAN_FEATURE)
 
   /**
@@ -153,6 +157,19 @@ Nozzle nozzle;
 
     const uint8_t arrPos = ANY(SINGLENOZZLE, MIXING_EXTRUDER) ? 0 : active_extruder;
 
+    #if ENABLED(NOZZLE_CLEAN_MIN_TEMP) && NOZZLE_CLEAN_TEMP > 0
+      if(thermalManager.degTargetHotend(arrPos) < NOZZLE_CLEAN_TEMP) {
+        #if ENABLED(NOZZLE_CLEAN_HEAT_LOWTEMP)
+          SERIAL_ECHOLNPGM("Nozzle too Cold - Heating");
+          thermalManager.setTargetHotend(NOZZLE_CLEAN_TEMP, arrPos);
+          thermalManager.wait_for_hotend(arrPos);
+        #else
+          SERIAL_ECHOLNPGM("Nozzle too cold - Skipping Wipe");
+          return;
+        #endif
+      }
+    #endif
+
     #if HAS_SOFTWARE_ENDSTOPS
 
       #define LIMIT_AXIS(A) do{ \

Marlin/src/module/probe.cpp

@@ -348,6 +348,29 @@ bool Probe::set_deployed(const bool deploy) {
     constexpr bool deploy_stow_condition = true;
   #endif
 
+  #if defined(PROBE_REQUIRES_MINTEMP_NOZZLE) && (PROBE_REQUIRES_MINTEMP_NOZZLE) > 0 && HAS_TEMP_HOTEND
+    #define WAIT_FOR_NOZZLE_HEAT 1
+    bool setting_hotend = thermalManager.degTargetHotend(0) < (PROBE_REQUIRES_MINTEMP_NOZZLE);
+    if (setting_hotend) {
+      uint16_t hotendTemperature = (PROBE_REQUIRES_MINTEMP_NOZZLE);
+      SERIAL_ECHOLNPAIR("Preheating hotend to ", hotendTemperature);
+      thermalManager.setTargetHotend(hotendTemperature, 0);
+    }
+  #endif
+
+  #if defined(PROBE_REQUIRES_MINTEMP_BED) && (PROBE_REQUIRES_MINTEMP_BED) > 0 && HAS_HEATED_BED
+    #define WAIT_FOR_BED_HEAT 1
+    bool setting_bed = thermalManager.degBed() < (PROBE_REQUIRES_MINTEMP_BED);
+    if (setting_bed) {
+      uint16_t bedTemperature = (PROBE_REQUIRES_MINTEMP_BED);
+      SERIAL_ECHOLNPAIR("Preheating bed to ", bedTemperature);
+      thermalManager.setTargetBed(bedTemperature);
+    }
+  #endif
+
+  TERN_(WAIT_FOR_NOZZLE_HEAT, if (setting_hotend) thermalManager.wait_for_hotend(0));
+  TERN_(WAIT_FOR_BED_HEAT, if (setting_bed) thermalManager.wait_for_bed_heating());
+
   // For beds that fall when Z is powered off only raise for trusted Z
   #if ENABLED(UNKNOWN_Z_NO_RAISE)
     const bool unknown_condition = axis_is_trusted(Z_AXIS);

buildroot/tests/LPC1768-tests

@@ -42,11 +42,12 @@ opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER SDSUPPORT ADAPTIVE_FAN_
            NOZZLE_AS_PROBE AUTO_BED_LEVELING_BILINEAR G29_RETRY_AND_RECOVER Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
            BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET BABYSTEP_ZPROBE_GFX_OVERLAY \
            PRINTCOUNTER NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE SLOW_PWM_HEATERS PIDTEMPBED EEPROM_SETTINGS INCH_MODE_SUPPORT TEMPERATURE_UNITS_SUPPORT \
-           Z_SAFE_HOMING ADVANCED_PAUSE_FEATURE PARK_HEAD_ON_PAUSE \
+           Z_SAFE_HOMING ADVANCED_PAUSE_FEATURE PARK_HEAD_ON_PAUSE NOZZLE_CLEAN_MIN_TEMP \
            HOST_KEEPALIVE_FEATURE HOST_ACTION_COMMANDS HOST_PROMPT_SUPPORT \
            LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA EMERGENCY_PARSER
 opt_set GRID_MAX_POINTS_X 16
 opt_set NOZZLE_TO_PROBE_OFFSET "{ 0, 0, 0 }"
+opt_set NOZZLE_CLEAN_TEMP  170
 exec_test $1 $2 "Re-ARM with NOZZLE_AS_PROBE and many features." "$3"
 
 # clean up

buildroot/tests/rambo-tests

@@ -22,6 +22,8 @@ opt_add TEMP_CHAMBER_PIN 3
 opt_add HEATER_CHAMBER_PIN 45
 opt_set GRID_MAX_POINTS_X 16
 opt_set FANMUX0_PIN 53
+opt_set PROBE_REQUIRES_MINTEMP_NOZZLE 150
+opt_set PROBE_REQUIRES_MINTEMP_BED 50
 opt_disable USE_WATCHDOG
 opt_enable REPRAP_DISCOUNT_SMART_CONTROLLER LCD_PROGRESS_BAR LCD_PROGRESS_BAR_TEST \
            FIX_MOUNTED_PROBE Z_SAFE_HOMING CODEPENDENT_XY_HOMING PIDTEMPBED PROBE_TEMP_COMPENSATION \