Merge pull request sparkfun#22 from mazgch/serial-begin

allow customisation of beginSerial

Author: PaulZC

src/SparkFun_u-blox_SARA-R5_Arduino_Library.cpp

@@ -5974,6 +5974,7 @@ void SARA_R5::beginSerial(unsigned long baud)
   delay(100);
   if (_hardSerial != NULL)
   {
+    _hardSerial->end();
     _hardSerial->begin(baud);
   }
 #ifdef SARA_R5_SOFTWARE_SERIAL_ENABLED

src/SparkFun_u-blox_SARA-R5_Arduino_Library.h

@@ -1026,7 +1026,7 @@ class SARA_R5 : public Print
   int readAvailable(char *inString);
   char readChar(void);
   int hwAvailable(void);
-  void beginSerial(unsigned long baud);
+  virtual void beginSerial(unsigned long baud);
   void setTimeout(unsigned long timeout);
   bool find(char *target);