Use SET_INPUT_PULLUP where appropriate

Marlin/Marlin_main.cpp

@@ -858,17 +858,17 @@ bool enqueue_and_echo_command(const char* cmd, bool say_ok/*=false*/) {
 
 void setup_killpin() {
   #if HAS_KILL
-    SET_INPUT(KILL_PIN);
+    SET_INPUT_PULLUP(KILL_PIN);
-    WRITE(KILL_PIN, HIGH);
   #endif
 }
 
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
 
   void setup_filrunoutpin() {
-    SET_INPUT(FIL_RUNOUT_PIN);
     #if ENABLED(ENDSTOPPULLUP_FIL_RUNOUT)
-      WRITE(FIL_RUNOUT_PIN, HIGH);
+      SET_INPUT_PULLUP(FIL_RUNOUT_PIN);
+    #else
+      SET_INPUT(FIL_RUNOUT_PIN);
     #endif
   }
 
@@ -877,8 +877,7 @@ void setup_killpin() {
 // Set home pin
 void setup_homepin(void) {
   #if HAS_HOME
-    SET_INPUT(HOME_PIN);
+    SET_INPUT_PULLUP(HOME_PIN);
-    WRITE(HOME_PIN, HIGH);
   #endif
 }
 

Marlin/endstops.cpp

@@ -67,65 +67,74 @@ volatile char Endstops::endstop_hit_bits; // use X_MIN, Y_MIN, Z_MIN and Z_MIN_P
 void Endstops::init() {
 
   #if HAS_X_MIN
-    SET_INPUT(X_MIN_PIN);
     #if ENABLED(ENDSTOPPULLUP_XMIN)
-      WRITE(X_MIN_PIN,HIGH);
+      SET_INPUT_PULLUP(X_MIN_PIN);
+    #else
+      SET_INPUT(X_MIN_PIN);
     #endif
   #endif
 
   #if HAS_Y_MIN
-    SET_INPUT(Y_MIN_PIN);
     #if ENABLED(ENDSTOPPULLUP_YMIN)
-      WRITE(Y_MIN_PIN,HIGH);
+      SET_INPUT_PULLUP(Y_MIN_PIN);
+    #else
+      SET_INPUT(Y_MIN_PIN);
     #endif
   #endif
 
   #if HAS_Z_MIN
-    SET_INPUT(Z_MIN_PIN);
     #if ENABLED(ENDSTOPPULLUP_ZMIN)
-      WRITE(Z_MIN_PIN,HIGH);
+      SET_INPUT_PULLUP(Z_MIN_PIN);
+    #else
+      SET_INPUT(Z_MIN_PIN);
     #endif
   #endif
 
   #if HAS_Z2_MIN
-    SET_INPUT(Z2_MIN_PIN);
     #if ENABLED(ENDSTOPPULLUP_ZMIN)
-      WRITE(Z2_MIN_PIN,HIGH);
+      SET_INPUT_PULLUP(Z2_MIN_PIN);
+    #else
+      SET_INPUT(Z2_MIN_PIN);
     #endif
   #endif
 
   #if HAS_X_MAX
-    SET_INPUT(X_MAX_PIN);
     #if ENABLED(ENDSTOPPULLUP_XMAX)
-      WRITE(X_MAX_PIN,HIGH);
+      SET_INPUT_PULLUP(X_MAX_PIN);
+    #else
+      SET_INPUT(X_MAX_PIN);
     #endif
   #endif
 
   #if HAS_Y_MAX
-    SET_INPUT(Y_MAX_PIN);
     #if ENABLED(ENDSTOPPULLUP_YMAX)
-      WRITE(Y_MAX_PIN,HIGH);
+      SET_INPUT_PULLUP(Y_MAX_PIN);
+    #else
+      SET_INPUT(Y_MAX_PIN);
     #endif
   #endif
 
   #if HAS_Z_MAX
-    SET_INPUT(Z_MAX_PIN);
     #if ENABLED(ENDSTOPPULLUP_ZMAX)
-      WRITE(Z_MAX_PIN,HIGH);
+      SET_INPUT_PULLUP(Z_MAX_PIN);
+    #else
+      SET_INPUT(Z_MAX_PIN);
     #endif
   #endif
 
   #if HAS_Z2_MAX
-    SET_INPUT(Z2_MAX_PIN);
     #if ENABLED(ENDSTOPPULLUP_ZMAX)
-      WRITE(Z2_MAX_PIN,HIGH);
+      SET_INPUT_PULLUP(Z2_MAX_PIN);
+    #else
+      SET_INPUT(Z2_MAX_PIN);
     #endif
   #endif
 
   #if ENABLED(Z_MIN_PROBE_ENDSTOP)
-    SET_INPUT(Z_MIN_PROBE_PIN);
     #if ENABLED(ENDSTOPPULLUP_ZMIN_PROBE)
-      WRITE(Z_MIN_PROBE_PIN,HIGH);
+      SET_INPUT_PULLUP(Z_MIN_PROBE_PIN);
+    #else
+      SET_INPUT(Z_MIN_PROBE_PIN);
     #endif
   #endif
 

Marlin/temperature.cpp

@@ -998,8 +998,7 @@ void Temperature::init() {
 
     OUT_WRITE(SCK_PIN, LOW);
     OUT_WRITE(MOSI_PIN, HIGH);
-    SET_INPUT(MISO_PIN);
+    SET_INPUT_PULLUP(MISO_PIN);
-    WRITE(MISO_PIN, HIGH);
     OUT_WRITE(SS_PIN, HIGH);
 
     OUT_WRITE(MAX6675_SS, HIGH);

Marlin/ultralcd.cpp

@@ -2973,18 +2973,15 @@ void lcd_init() {
 
   #if ENABLED(NEWPANEL)
     #if BUTTON_EXISTS(EN1)
-      SET_INPUT(BTN_EN1);
+      SET_INPUT_PULLUP(BTN_EN1);
-      WRITE(BTN_EN1, HIGH);
     #endif
 
     #if BUTTON_EXISTS(EN2)
-      SET_INPUT(BTN_EN2);
+      SET_INPUT_PULLUP(BTN_EN2);
-      WRITE(BTN_EN2, HIGH);
     #endif
 
     #if BUTTON_EXISTS(ENC)
-      SET_INPUT(BTN_ENC);
+      SET_INPUT_PULLUP(BTN_ENC);
-      WRITE(BTN_ENC, HIGH);
     #endif
 
     #if ENABLED(REPRAPWORLD_KEYPAD)
@@ -3021,8 +3018,7 @@ void lcd_init() {
   #endif // !NEWPANEL
 
   #if ENABLED(SDSUPPORT) && PIN_EXISTS(SD_DETECT)
-    SET_INPUT(SD_DETECT_PIN);
+    SET_INPUT_PULLUP(SD_DETECT_PIN);
-    WRITE(SD_DETECT_PIN, HIGH);
     lcd_sd_status = 2; // UNKNOWN
   #endif