SAMD21 uses USBSerial, which subclasses Stream, but not HardwareSerial

Author: runger1101001

src/communication/Commander.cpp

@@ -1,7 +1,7 @@
 #include "Commander.h"
 
 
-Commander::Commander(HardwareSerial& serial){
+Commander::Commander(Stream& serial){
   com_port = &serial;
 }
 Commander::Commander(){
@@ -430,4 +430,4 @@ void Commander::printVerbose(const __FlashStringHelper *message){
 }
 void Commander::printError(){
  print(F("err"));
-}
+}

src/communication/Commander.h

@@ -39,7 +39,7 @@ class Commander
      * 
      * @param serial - Serial com port instance
      */
-    Commander(HardwareSerial &serial);
+    Commander(Stream &serial);
     Commander();
 
     /**
@@ -90,7 +90,7 @@ class Commander
     uint8_t decimal_places = 3; //!< number of decimal places to be used when displaying numbers
 
     // monitoring functions
-    HardwareSerial* com_port = nullptr; //!< Serial terminal variable if provided
+    Stream* com_port = nullptr; //!< Serial terminal variable if provided
 
     /**
      *