arduino
diff --git a/‎cores/arduino/SERCOM.cpp
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+6Lines changed: 6 additions & 0 deletions b/‎cores/arduino/SERCOM.cpp
Copy file name to clipboardExpand all lines: cores/arduino/SERCOM.cpp
+6Lines changed: 6 additions & 0 deletions
diff --git a/‎cores/arduino/SERCOM.h
Copy file name to clipboardExpand all lines: cores/arduino/SERCOM.h
+1Lines changed: 1 addition & 0 deletions b/‎cores/arduino/SERCOM.h
Copy file name to clipboardExpand all lines: cores/arduino/SERCOM.h
+1Lines changed: 1 addition & 0 deletions
diff --git a/‎cores/arduino/Uart.cpp
Copy file name to clipboardExpand all lines: cores/arduino/Uart.cpp
+7-1Lines changed: 7 additions & 1 deletion b/‎cores/arduino/Uart.cpp
Copy file name to clipboardExpand all lines: cores/arduino/Uart.cpp
+7-1Lines changed: 7 additions & 1 deletion
@@ -152,6 +152,12 @@ bool SERCOM::isFrameErrorUART()
   return sercom->USART.STATUS.bit.FERR;
 }
 
+void SERCOM::clearFrameErrorUART()
+{
+  // clear FERR bit writing 1 status bit
+  sercom->USART.STATUS.bit.FERR = 1;
+}
+
 bool SERCOM::isParityErrorUART()
 {
   //PERR : Parity Error
 
@@ -158,6 +158,7 @@ class SERCOM
 		bool availableDataUART( void ) ;
 		bool isBufferOverflowErrorUART( void ) ;
 		bool isFrameErrorUART( void ) ;
+		void clearFrameErrorUART( void ) ;
 		bool isParityErrorUART( void ) ;
 		bool isDataRegisterEmptyUART( void ) ;
 		uint8_t readDataUART( void ) ;
 
@@ -90,6 +90,13 @@ void Uart::flush()
 
 void Uart::IrqHandler()
 {
+  if (sercom->isFrameErrorUART()) {
+    // frame error, next byte is invalid so read and discard it
+    sercom->readDataUART();
+
+    sercom->clearFrameErrorUART();
+  }
+
   if (sercom->availableDataUART()) {
     rxBuffer.store_char(sercom->readDataUART());
 
@@ -114,7 +121,6 @@ void Uart::IrqHandler()
   if (sercom->isUARTError()) {
     sercom->acknowledgeUARTError();
     // TODO: if (sercom->isBufferOverflowErrorUART()) ....
-    // TODO: if (sercom->isFrameErrorUART()) ....
     // TODO: if (sercom->isParityErrorUART()) ....
     sercom->clearStatusUART();
   }
Original file line number	Diff line number	Diff line change
`@@ -152,6 +152,12 @@ bool SERCOM::isFrameErrorUART()`
`152`	`152`	`return sercom->USART.STATUS.bit.FERR;`
`153`	`153`	`}`
`154`	`154`
	`155`	`+void SERCOM::clearFrameErrorUART()`
	`156`	`+{`
	`157`	`+ // clear FERR bit writing 1 status bit`
	`158`	`+ sercom->USART.STATUS.bit.FERR = 1;`
	`159`	`+}`
	`160`	`+`
`155`	`161`	`bool SERCOM::isParityErrorUART()`
`156`	`162`	`{`
`157`	`163`	`//PERR : Parity Error`