🎨 BTT SKR Pro pins auto-assign (#22411)

Co-authored-by: MarkusThur <83773817+MarkusThur@users.noreply.github.com>

Marlin/src/pins/stm32f4/pins_BTT_SKR_PRO_common.h

@@ -231,27 +231,81 @@
 
 //
 // Temperature Sensors
+// Use ADC pins without pullup for sensors that don't need a pullup.
 //
-#define TEMP_0_PIN                          PF4   // T1 <-> E0
-#define TEMP_1_PIN                          PF5   // T2 <-> E1
-#define TEMP_2_PIN                          PF6   // T3 <-> E2
-#define TEMP_BED_PIN                        PF3   // T0 <-> Bed
+#if TEMP_SENSOR_0_IS_AD8495 || TEMP_SENSOR_0 == 20
+  #define TEMP_0_PIN                        PF8
+#else
+  #define TEMP_0_PIN                        PF4   // T1 <-> E0
+#endif
+#if TEMP_SENSOR_1_IS_AD8495 || TEMP_SENSOR_1 == 20
+  #define TEMP_1_PIN                        PF9
+#else
+  #define TEMP_1_PIN                        PF5   // T2 <-> E1
+#endif
+#if TEMP_SENSOR_2_IS_AD8495 || TEMP_SENSOR_2 == 20
+  #define TEMP_2_PIN                        PF10
+#else
+  #define TEMP_2_PIN                        PF6   // T3 <-> E2
+#endif
+#if TEMP_SENSOR_BED_IS_AD8495 || TEMP_SENSOR_BED == 20
+  #define TEMP_BED_PIN                      PF7
+#else
+  #define TEMP_BED_PIN                      PF3   // T0 <-> Bed
+#endif
+
+#ifdef TEMP_SENSOR_PROBE && !defined(TEMP_PROBE_PIN)
+  #if TEMP_SENSOR_PROBE_IS_AD8495 || TEMP_SENSOR_PROBE == 20
+    #if HOTENDS == 2
+      #define TEMP_PROBE_PIN                PF10
+    #elif HOTENDS < 2
+      #define TEMP_PROBE_PIN                PF9
+    #endif
+  #else
+    #if HOTENDS == 2
+      #define TEMP_PROBE_PIN          TEMP_2_PIN
+    #elif HOTENDS < 2
+      #define TEMP_PROBE_PIN          TEMP_1_PIN
+    #endif
+  #endif
+#endif
+
+#if TEMP_SENSOR_CHAMBER && !defined(TEMP_CHAMBER_PIN)
+  #if TEMP_SENSOR_CHAMBER_IS_AD8495 || TEMP_SENSOR_CHAMBER == 20
+    #define TEMP_CHAMBER_PIN                PF10
+  #else
+    #define TEMP_CHAMBER_PIN          TEMP_2_PIN
+  #endif
+#endif
 
 //
-// Heaters / Fans
+// Heaters
 //
 #define HEATER_0_PIN                        PB1   // Heater0
 #define HEATER_1_PIN                        PD14  // Heater1
-#define HEATER_2_PIN                        PB0   // Heater1
+#if TEMP_SENSOR_CHAMBER && HOTENDS < 3
+  #define HEATER_CHAMBER_PIN                PB0   // Heater2
+#else
+  #define HEATER_2_PIN                      PB0   // Heater2
+#endif
 #define HEATER_BED_PIN                      PD12  // Hotbed
+
+//
+// Fans
+//
 #define FAN_PIN                             PC8   // Fan0
 #define FAN1_PIN                            PE5   // Fan1
-#define FAN2_PIN                            PE6   // Fan2
 
 #ifndef E0_AUTO_FAN_PIN
   #define E0_AUTO_FAN_PIN               FAN1_PIN
 #endif
 
+#if ENABLED(USE_CONTROLLER_FAN) && HOTENDS < 2
+  #define CONTROLLER_FAN_PIN                PE6   // Fan2
+#else
+  #define FAN2_PIN                          PE6   // Fan2
+#endif
+
 //
 // Misc. Functions
 //