Allow BL-Touch users to control heaters during probe event (#6485)

The Configuration.h file entries for BL-Touch have been updated to:
```cpp
//#define BLTOUCH
//#define BLTOUCH_DELAY 375      // (ms) Enable and increase if needed
//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are
turned off during probe event
```

Marlin/Configuration.h

@@ -577,6 +577,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375 // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/Marlin_main.cpp

@@ -2067,10 +2067,11 @@ static void clean_up_after_endstop_or_probe_move() {
 
     // 
     // The BL-Touch probes have a HAL effect sensor.  The high currents switching
-    // on and off cause big magnetic fields that can affect the reliability of the
+    // on and off cause big magnetic fields that can affect the repeatability of the
     // sensor.  So, for BL-Touch probes, we turn off the heaters during the actual probe.
     // And then we quickly turn them back on after we have sampled the point
     //
+  #if ENABLED(BLTOUCH_HEATERS_OFF)
     void turn_heaters_on_or_off_for_bltouch(const bool deploy) {
       static int8_t bltouch_recursion_cnt=0;
       static millis_t last_emi_protection=0;
@@ -2105,9 +2106,12 @@ static void clean_up_after_endstop_or_probe_move() {
         }
       }
     }
+    #endif
 
     void set_bltouch_deployed(const bool deploy) {
+      #if ENABLED(BLTOUCH_HEATERS_OFF)
       turn_heaters_on_or_off_for_bltouch(deploy);
+      #endif
       if (deploy && TEST_BLTOUCH()) {      // If BL-Touch says it's triggered
         bltouch_command(BLTOUCH_RESET);    // try to reset it.
         bltouch_command(BLTOUCH_DEPLOY);   // Also needs to deploy and stow to
@@ -2143,8 +2147,10 @@ static void clean_up_after_endstop_or_probe_move() {
     #endif
 
     #if ENABLED(BLTOUCH)
+      #if ENABLED(BLTOUCH_HEATERS_OFF)
       turn_heaters_on_or_off_for_bltouch(deploy);
       #endif
+    #endif
 
     if (endstops.z_probe_enabled == deploy) return false;
 

Marlin/example_configurations/Cartesio/Configuration.h

@@ -576,6 +576,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/Felix/Configuration.h

@@ -560,6 +560,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/Felix/DUAL/Configuration.h

@@ -560,6 +560,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/FolgerTech-i3-2020/Configuration.h

@@ -580,6 +580,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/Hephestos/Configuration.h

@@ -568,6 +568,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/Hephestos_2/Configuration.h

@@ -571,6 +571,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/K8200/Configuration.h

@@ -606,6 +606,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/K8400/Configuration.h

@@ -577,6 +577,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/K8400/Dual-head/Configuration.h

@@ -577,6 +577,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

@@ -577,6 +577,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/RigidBot/Configuration.h

@@ -576,6 +576,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/SCARA/Configuration.h

@@ -592,6 +592,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/TAZ4/Configuration.h

@@ -597,6 +597,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/TinyBoy2/Configuration.h

@@ -628,6 +628,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/WITBOX/Configuration.h

@@ -568,6 +568,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/adafruit/ST7565/Configuration.h

@@ -577,6 +577,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration.h

@@ -651,6 +651,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration.h

@@ -652,6 +652,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/generic/Configuration.h

@@ -641,6 +641,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/kossel_mini/Configuration.h

@@ -634,6 +634,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/kossel_pro/Configuration.h

@@ -635,6 +635,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/delta/kossel_xl/Configuration.h

@@ -654,6 +654,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/gCreate_gMax1.5+/Configuration.h

@@ -591,6 +591,7 @@
  */
 #define BLTOUCH
 #define BLTOUCH_DELAY 500   // (ms) Enable and increase if needed
+#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/makibox/Configuration.h

@@ -580,6 +580,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -573,6 +573,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017

Marlin/example_configurations/wt150/Configuration.h

@@ -582,6 +582,7 @@
  */
 //#define BLTOUCH
 //#define BLTOUCH_DELAY 375   // (ms) Enable and increase if needed
+//#define BLTOUCH_HEATERS_OFF // if defined the printer's heaters are turned off during probe event
 
 /**
  *   BLTouch WARNING  -  ONLY APPLIES TO VERSIONS OF MARLIN BEFORE 15 FEB 2017