Add in USB_INT_RegisterHandlers() internal function to register the interrupt handler routines used by LUFA. Add dummy loads after clearing the interrupt lines according to the datasheet.

Add in temporary global interrupts enable/disable macros.

LUFA/Common/Common.h

@@ -95,7 +95,7 @@
 			// TODO
 			#define EEMEM
 			#define PROGMEM                  const
-			#define ISR(Name)                void Name (void)
+			#define ISR(Name)                void Name (void) __attribute__((__interrupt__)); void Name (void)
 			#define ATOMIC_BLOCK(x)          if (1)
 			#define ATOMIC_RESTORESTATE
 			#define pgm_read_byte(x)         *x
@@ -105,6 +105,8 @@
 			#define _delay_ms(x)
 			#define memcmp_P(...)            memcmp(__VA_ARGS__)
 			#define memcpy_P(...)            memcpy(__VA_ARGS__)
+			#define cpu_irq_enable()         do { asm volatile("" ::: "memory"); __builtin_csrf(AVR32_SR_GM_OFFSET); } while (0)
+			#define cpu_irq_disable()        do { __builtin_ssrf(AVR32_SR_GM_OFFSET); asm volatile("" ::: "memory"); } while (0)
 			
 			#warning The UC3B architecture support is currently experimental and incomplete!
 		#endif

LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.c

@@ -60,6 +60,8 @@ void USB_Init(
 	USB_Options = Options;
 	#endif
 	
+	USB_INT_RegisterHandlers();
+
 	if (!(USB_Options & USB_OPT_REG_DISABLED))
 	  USB_REG_On();
 	else

LUFA/Drivers/USB/Core/AVR8/USBInterrupt_AVR8.h

@@ -84,6 +84,11 @@
 			};
 
 		/* Inline Functions: */
+			static inline void USB_INT_RegisterHandlers(void)
+			{
+				// Not required for AVR8
+			}
+
 			static inline void USB_INT_Enable(const uint8_t Interrupt) ATTR_ALWAYS_INLINE;
 			static inline void USB_INT_Enable(const uint8_t Interrupt)
 			{

LUFA/Drivers/USB/Core/UC3B/USBController_UC3B.c

@@ -60,6 +60,8 @@ void USB_Init(
 	USB_Options = Options;
 	#endif
 	
+	USB_INT_RegisterHandlers();
+
 	#if defined(USB_CAN_BE_BOTH)
 	if (Mode == USB_MODE_UID)
 	{
@@ -103,17 +105,17 @@ void USB_ResetInterface(void)
 	bool UIDModeSelectEnabled = AVR32_USBB.USBCON.uide;
 	#endif
 
-	USB_INT_DisableAllInterrupts();
-	USB_INT_ClearAllInterrupts();
-
-	USB_Controller_Reset();
-	
 	AVR32_PM.GCCTRL[USB_GCLK_USBB_INDEX].pllsel = !(USB_Options & USB_OPT_GCLK_SRC_OSC);
 	AVR32_PM.GCCTRL[USB_GCLK_USBB_INDEX].oscsel = !(USB_Options & USB_OPT_GCLK_CHANNEL_0);
 	AVR32_PM.GCCTRL[USB_GCLK_USBB_INDEX].diven  = (F_CLOCK != 48000000UL);
 	AVR32_PM.GCCTRL[USB_GCLK_USBB_INDEX].div    = ((F_CLOCK / 2) / 48000000UL);
 	AVR32_PM.GCCTRL[USB_GCLK_USBB_INDEX].cen    = true;
 
+	USB_INT_DisableAllInterrupts();
+	USB_INT_ClearAllInterrupts();
+
+	USB_Controller_Reset();
+
 	#if defined(USB_CAN_BE_BOTH)
 	if (UIDModeSelectEnabled)
 	{

LUFA/Drivers/USB/Core/UC3B/USBInterrupt_UC3B.h

@@ -68,19 +68,26 @@
 				USB_INT_SUSPI   = 3,
 				USB_INT_EORSTI  = 4,
 				USB_INT_SOFI    = 5,
-				USB_INT_RXSTPI  = 6,
 				#endif
 				#if (defined(USB_CAN_BE_HOST) || defined(__DOXYGEN__))			
-				USB_INT_HSOFI   = 7,
+				USB_INT_HSOFI   = 6,
-				USB_INT_DCONNI  = 8,
+				USB_INT_DCONNI  = 7,
-				USB_INT_DDISCI  = 9,
+				USB_INT_DDISCI  = 8,
-				USB_INT_RSTI    = 10,
+				USB_INT_RSTI    = 9,
-				USB_INT_BCERRI  = 11,
+				USB_INT_BCERRI  = 10,
-				USB_INT_VBERRI  = 12,
+				USB_INT_VBERRI  = 11,
 				#endif
 			};
 		
+		/* ISR Prototypes: */
+			ISR(USB_GEN_vect);
+		
 		/* Inline Functions: */
+			static inline void USB_INT_RegisterHandlers(void)
+			{
+				AVR32_INTC.IPR[AVR32_USBB_IRQ % 32].autovector = (uintptr_t)&USB_GEN_vect;			
+			}
+		
 			static inline void USB_INT_Enable(const uint8_t Interrupt) ATTR_ALWAYS_INLINE;
 			static inline void USB_INT_Enable(const uint8_t Interrupt)
 			{			
@@ -107,9 +114,6 @@
 					case USB_INT_SOFI:
 						AVR32_USBB.UDINTESET.sofes    = true;
 						break;
-					case USB_INT_RXSTPI:
-						// TODO
-						return;
 					#endif
 					#if defined(USB_CAN_BE_HOST)
 					case USB_INT_HSOFI:
@@ -160,9 +164,6 @@
 					case USB_INT_SOFI:
 						AVR32_USBB.UDINTECLR.sofec    = true;
 						break;
-					case USB_INT_RXSTPI:
-						// TODO
-						return;
 					#endif
 					#if defined(USB_CAN_BE_HOST)
 					case USB_INT_HSOFI:
@@ -194,47 +195,56 @@
 				{
 					case USB_INT_VBUSTI:
 						AVR32_USBB.USBSTACLR.vbustic = true;
+						(void)AVR32_USBB.USBSTACLR;
 						break;
 					#if defined(USB_CAN_BE_BOTH)
 					case USB_INT_IDTI:
 						AVR32_USBB.USBSTACLR.idtic   = true;
+						(void)AVR32_USBB.USBSTACLR;
 						break;
 					#endif
 					#if defined(USB_CAN_BE_DEVICE)
 					case USB_INT_WAKEUPI:
 						AVR32_USBB.UDINTCLR.wakeupc  = true;
+						(void)AVR32_USBB.UDINTCLR;
 						break;
 					case USB_INT_SUSPI:
 						AVR32_USBB.UDINTCLR.suspc    = true;
+						(void)AVR32_USBB.UDINTCLR;
 						break;
 					case USB_INT_EORSTI:
 						AVR32_USBB.UDINTCLR.eorstc   = true;
+						(void)AVR32_USBB.UDINTCLR;
 						break;
 					case USB_INT_SOFI:
 						AVR32_USBB.UDINTCLR.sofc     = true;
+						(void)AVR32_USBB.UDINTCLR;
 						break;
-					case USB_INT_RXSTPI:
-						// TODO
-						return;
 					#endif
 					#if defined(USB_CAN_BE_HOST)
 					case USB_INT_HSOFI:
 						AVR32_USBB.UHINTCLR.hsofic   = true;
+						(void)AVR32_USBB.UHINTCLR;
 						break;
 					case USB_INT_DCONNI:
 						AVR32_USBB.UHINTCLR.dconnic  = true;
+						(void)AVR32_USBB.UHINTCLR;
 						break;
 					case USB_INT_DDISCI:
 						AVR32_USBB.UHINTCLR.ddiscic  = true;
+						(void)AVR32_USBB.UHINTCLR;
 						break;
 					case USB_INT_RSTI:
 						AVR32_USBB.UHINTCLR.rstic    = true;
+						(void)AVR32_USBB.UHINTCLR;
 						break;
 					case USB_INT_BCERRI:
 						AVR32_USBB.USBSTACLR.bcerric = true;
+						(void)AVR32_USBB.USBSTACLR;
 						break;
 					case USB_INT_VBERRI:
 						AVR32_USBB.USBSTACLR.vberric = true;
+						(void)AVR32_USBB.USBSTACLR;
 						break;
 					#endif
 				}
@@ -260,9 +270,6 @@
 						return AVR32_USBB.UDINTE.eorste;
 					case USB_INT_SOFI:
 						return AVR32_USBB.UDINTE.sofe;
-					case USB_INT_RXSTPI:
-						// TODO
-						return false;
 					#endif
 					#if defined(USB_CAN_BE_HOST)					
 					case USB_INT_HSOFI:
@@ -303,9 +310,6 @@
 						return AVR32_USBB.UDINT.eorst;
 					case USB_INT_SOFI:
 						return AVR32_USBB.UDINT.sof;
-					case USB_INT_RXSTPI:
-						// TODO
-						return false;
 					#endif
 					#if defined(USB_CAN_BE_HOST)
 					case USB_INT_HSOFI:

LUFA/ManPages/LUFAPoweredProjects.txt

@@ -53,6 +53,7 @@
  *  - Ghetto Drum, a MIDI drum controller: http://noisybox.net/art/gdrum/
  *  - IR Remote to Keyboard decoder: http://netzhansa.blogspot.com/2010/04/our-living-room-hi-fi-setup-needs-mp3.html
  *  - LED Panel controller: http://projects.peterpolidoro.net/caltech/panelscontroller/panelscontroller.htm
+ *  - Motherboard BIOS flasher: http://www.coreboot.org/InSystemFlasher
  *  - PSGroove, a Playstation 3 Homebrew dongle: http://github.com/psgroove
  *  - Single LED Matrix Display: http://guysoft.wordpress.com/2009/10/08/bumble-b/
  *  - Linux Secure Storage Dongle: http://github.com/TomMD/teensy