Merge pull request #3182 from thinkyhead/rcbugfix_printrboard_revf

Add support for Printrboard RevF

Marlin/stepper.cpp

@@ -30,6 +30,7 @@
 #include "language.h"
 #include "cardreader.h"
 #include "speed_lookuptable.h"
+
 #if HAS_DIGIPOTSS
   #include <SPI.h>
 #endif
@@ -1181,19 +1182,18 @@ void quickStop() {
 
 #endif //BABYSTEPPING
 
-// From Arduino DigitalPotControl example
-void digitalPotWrite(int address, int value) {
-  #if HAS_DIGIPOTSS
+#if HAS_DIGIPOTSS
+
+  // From Arduino DigitalPotControl example
+  void digitalPotWrite(int address, int value) {
     digitalWrite(DIGIPOTSS_PIN, LOW); // take the SS pin low to select the chip
     SPI.transfer(address); //  send in the address and value via SPI:
     SPI.transfer(value);
     digitalWrite(DIGIPOTSS_PIN, HIGH); // take the SS pin high to de-select the chip:
     //delay(10);
-  #else
-    UNUSED(address);
-    UNUSED(value);
-  #endif
-}
+  }
+
+#endif //HAS_DIGIPOTSS
 
 // Initialize Digipot Motor Current
 void digipot_init() {
@@ -1232,7 +1232,7 @@ void digipot_current(uint8_t driver, int current) {
   #else
     UNUSED(driver);
     UNUSED(current);
-#endif
+  #endif
 }
 
 void microstep_init() {