Add __VA_ARGS__ support to the LUFA supplied ISR macro. Add proper result typecasting to the SWAPENDIAN_* macros.

Switch to using -1 on the UC3 target to obtain a register mask with all bits set (for clearing interrupts and status flags).

Fix incorrect USB controller mode on the UC3 when a fixed mode is specified as a compile time option due to AVR32_USBB.USBCON.uide being set by default.

Make USB_Descriptor_String_t use a uint16_t for Unicode strings on all targets except the AVR8 (retained for backwards compatibility).

LUFA/CodeTemplates/makefile_template.uc3

@@ -236,9 +236,7 @@ ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:%.S=$(OBJDIR)/%.lst),-gstabs,--listing-cont-l
 #    -Map:      create map file
 #    --cref:    add cross reference to  map file
 LDFLAGS  = -Wl,-Map=$(TARGET).map,--cref
-LDFLAGS += -Wl,--relax 
-LDFLAGS += -Wl,--gc-sections
-LDFLAGS += -Wl,--rodata-writable
+LDFLAGS += -Wl,--gc-sections --rodata-writable
 LDFLAGS += -Wl,--direct-data
 #LDFLAGS += -T linker_script.x
 

LUFA/Common/Common.h

@@ -257,7 +257,7 @@
 				 *
 				 *  \param Name  Unique name of the interrupt service routine.
 				 */
-				#define ISR(Name, ...)                  void Name (void) __attribute__((__interrupt__)); void Name (void)
+				#define ISR(Name, ...)                  void Name (void) __attribute__((__interrupt__)) __VA_ARGS__; void Name (void)
 			#endif
 
 		/* Inline Functions: */

LUFA/Common/Endianness.h

@@ -78,7 +78,7 @@
 			 *
 			 *  \return Input value with the byte ordering reversed.
 			 */
-			#define SWAPENDIAN_16(x)          ((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))
+			#define SWAPENDIAN_16(x)            (uint16_t)((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))
 
 			/** Swaps the byte ordering of a 32-bit value at compile-time. Do not use this macro for swapping byte orderings
 			 *  of dynamic values computed at runtime- use \ref SwapEndian_32() instead. The result of this macro can be used
@@ -91,7 +91,7 @@
 			 *
 			 *  \return Input value with the byte ordering reversed.
 			 */
-			#define SWAPENDIAN_32(x)          ((((x) & 0xFF000000UL) >> 24UL) | (((x) & 0x00FF0000UL) >> 8UL) | \
+			#define SWAPENDIAN_32(x)            (uint32_t)((((x) & 0xFF000000UL) >> 24UL) | (((x) & 0x00FF0000UL) >> 8UL) | \
 			                                               (((x) & 0x0000FF00UL) << 8UL)  | (((x) & 0x000000FFUL) << 24UL))
 
 			#if defined(ARCH_BIG_ENDIAN) && !defined(le16_to_cpu)

LUFA/Drivers/USB/Core/StdDescriptors.h

@@ -612,7 +612,10 @@
 			{
 				USB_Descriptor_Header_t Header; /**< Descriptor header, including type and size. */
 
-				wchar_t UnicodeString[]; /**< String data, as unicode characters (alternatively,
+				#if (ARCH == ARCH_AVR8)
+				wchar_t  UnicodeString[];
+				#else
+				uint16_t UnicodeString[]; /**< String data, as unicode characters (alternatively,
 				                           *   string language IDs). If normal ASCII characters are
 				                           *   to be used, they must be added as an array of characters
 				                           *   rather than a normal C string so that they are widened to
@@ -623,6 +626,7 @@
 				                           *   Unicode strings, and may be used instead of an explicit
 				                           *   array of ASCII characters.
 				                           */
+				#endif
 			} ATTR_PACKED USB_Descriptor_String_t;
 
 			/** \brief Standard USB String Descriptor (USB-IF naming conventions).

LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.c

@@ -61,7 +61,7 @@ void Endpoint_ClearEndpoints(void)
 	{
 		Endpoint_SelectEndpoint(EPNum);
 		(&AVR32_USBB.uecfg0)[EPNum]    = 0;
-		(&AVR32_USBB.uecon0clr)[EPNum] = 0xFFFFFFFF;
+		(&AVR32_USBB.uecon0clr)[EPNum] = -1;
 		USB_EndpointFIFOPos[EPNum]     = &AVR32_USBB_SLAVE[EPNum * 0x10000];
 		Endpoint_DisableEndpoint();
 	}

LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c

@@ -69,7 +69,7 @@ void Pipe_ClearPipes(void)
 	{
 		Pipe_SelectPipe(PNum);
 		(&AVR32_USBB.upcfg0)[PNum]    = 0;
-		(&AVR32_USBB.upcon0clr)[PNum] = 0xFFFFFFFF;
+		(&AVR32_USBB.upcon0clr)[PNum] = -1;
 		USB_PipeFIFOPos[PNum]         = &AVR32_USBB_SLAVE[PNum * 0x10000];
 		Pipe_DisablePipe();
 	}

LUFA/Drivers/USB/Core/UC3/USBController_UC3.c

@@ -72,6 +72,8 @@ void USB_Init(
 		AVR32_USBB.USBCON.uide = false;
 		USB_CurrentMode = Mode;
 	}
+	#else
+	AVR32_USBB.USBCON.uide = false;	
 	#endif
 
 	USB_IsInitialized = true;

LUFA/Drivers/USB/Core/UC3/USBInterrupt_UC3.c

@@ -36,8 +36,8 @@ void USB_INT_DisableAllInterrupts(void)
 	AVR32_USBB.USBCON.vbuste = false;
 	AVR32_USBB.USBCON.idte   = false;
 
-	AVR32_USBB.uhinteclr = 0xFFFFFFFF;
-	AVR32_USBB.udinteclr = 0xFFFFFFFF;
+	AVR32_USBB.uhinteclr     = -1;
+	AVR32_USBB.udinteclr     = -1;
 }
 
 void USB_INT_ClearAllInterrupts(void)
@@ -45,8 +45,8 @@ void USB_INT_ClearAllInterrupts(void)
 	AVR32_USBB.USBSTACLR.vbustic = true;
 	AVR32_USBB.USBSTACLR.idtic   = true;
 
-	AVR32_USBB.uhintclr = 0xFFFFFFFF;
-	AVR32_USBB.udintclr = 0xFFFFFFFF;
+	AVR32_USBB.uhintclr      = -1;
+	AVR32_USBB.udintclr      = -1;
 }
 
 ISR(USB_GEN_vect)