Update hardware/arduino/cores/arduino/HardwareSerial.cpp

Adding advanced begin (); with the ability to specify the length of bits, parity, stop bits.

Author: Alarus

hardware/arduino/cores/arduino/HardwareSerial.cpp

@@ -434,7 +434,7 @@ void HardwareSerial::begin(unsigned long baud, byte databits, char parity, byte
   {
     config_setting |= B10000000;
   }  
-  *_ucsrc = config_setting
+  *_ucsrc = config_setting;
 
   sbi(*_ucsrb, _rxen);
   sbi(*_ucsrb, _txen);