Changes required for use with EDBG COM port on ATmega4809 Xplained Pro

Author: Roy, Elizabeth

cores/arduino/wiring.c

@@ -392,10 +392,10 @@ void init()
 
 /****************************** USART *****************************************/
 
-	/* Configure PORTMUX for USARTS */
-	PORTMUX.USARTROUTEA = (PORTMUX_USART1_ALT1_gc // MAIN
-					| PORTMUX_USART0_ALT1_gc // SPARE
-					| PORTMUX_USART3_ALT1_gc); // DEBUG
+// 	/* Configure PORTMUX for USARTS */
+// 	PORTMUX.USARTROUTEA = (PORTMUX_USART1_ALT1_gc // MAIN
+// 					| PORTMUX_USART0_ALT1_gc // SPARE
+// 					| PORTMUX_USART3_ALT1_gc); // DEBUG
 
 /********************* TCB3 for system time tracking **************************/
 

variants/uno2018/pins_arduino.h

@@ -59,8 +59,10 @@ static const uint8_t SCL = PIN_WIRE_SCL;
 #define HWSERIAL0_DRE_VECTOR (USART1_DRE_vect)
 #define HWSERIAL0_DRE_VECTOR_NUM (USART1_DRE_vect_num)
 #define HWSERIAL0_RXC_VECTOR (USART1_RXC_vect)
-#define PIN_WIRE_HWSERIAL0_RX (0)
-#define PIN_WIRE_HWSERIAL0_TX (1)
+// #define PIN_WIRE_HWSERIAL0_RX (0)
+// #define PIN_WIRE_HWSERIAL0_TX (1)
+#define PIN_WIRE_HWSERIAL0_RX (12)
+#define PIN_WIRE_HWSERIAL0_TX (11)
 
 // Uno2 Debug USART (not available on headers, only via the EDGB virtual COM port)
 // USART3 on mega4809 (alternative pins)