Complete USB XMEGA interrupt control subsystem code in the core USB driver.

Automatically load in the USB calibration bytes from the User Signature Row on start-up.

Create internal SRAM variable for the endpoint control and status register table, used by the XMEGA USB controller hardware.

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

@@ -33,11 +33,11 @@
 
 void USB_INT_DisableAllInterrupts(void)
 {
-	AVR32_USBB.USBCON.vbuste = false;
-	AVR32_USBB.USBCON.idte   = false;
+	AVR32_USBB.USBCON.vbuste     = false;
+	AVR32_USBB.USBCON.idte       = false;
 
-	AVR32_USBB.uhinteclr     = -1;
-	AVR32_USBB.udinteclr     = -1;
+	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      = -1;
-	AVR32_USBB.udintclr      = -1;
+	AVR32_USBB.uhintclr          = -1;
+	AVR32_USBB.udintclr          = -1;
 }
 
 ISR(USB_GEN_vect)

LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h

@@ -50,6 +50,7 @@
 
 	/* Includes: */
 		#include "../../../../Common/Common.h"
+		#include "../USBController.h"
 		#include "../StdDescriptors.h"
 		#include "../USBInterrupt.h"
 		#include "../Endpoint.h"
@@ -103,12 +104,12 @@
 			/** Length of the device's unique internal serial number, in bits, if present on the selected microcontroller
 			 *  model.
 			 */
-			#define INTERNAL_SERIAL_LENGTH_BITS    112
+			#define INTERNAL_SERIAL_LENGTH_BITS    (8 * (1 + (offsetof(NVM_PROD_SIGNATURES_t, COORDY1) - offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0))))
 			
 			/** Start address of the internal serial number, in the appropriate address space, if present on the selected microcontroller
 			 *  model.
 			 */
-			#define INTERNAL_SERIAL_START_ADDRESS  0x08
+			#define INTERNAL_SERIAL_START_ADDRESS  offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0)
 			
 		/* Function Prototypes: */
 			/** Sends a Remote Wakeup request to the host. This signals to the host that the device should
@@ -139,7 +140,7 @@
 			static inline uint16_t USB_Device_GetFrameNumber(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline uint16_t USB_Device_GetFrameNumber(void)
 			{
-				return 0; // TODO
+				return (((uint16_t)USB_EndpointTable.FRAMENUMH << 8) | USB_EndpointTable.FRAMENUML);
 			}
 
 			#if !defined(NO_SOF_EVENTS)
@@ -152,7 +153,7 @@
 			static inline void USB_Device_EnableSOFEvents(void) ATTR_ALWAYS_INLINE;
 			static inline void USB_Device_EnableSOFEvents(void)
 			{
-				// TODO
+				USB.INTCTRLA |=  USB_SOFIE_bm;
 			}
 
 			/** Disables the device mode Start Of Frame events. When disabled, this stops the firing of the
@@ -163,7 +164,7 @@
 			static inline void USB_Device_DisableSOFEvents(void) ATTR_ALWAYS_INLINE;
 			static inline void USB_Device_DisableSOFEvents(void)
 			{
-				// TODO
+				USB.INTCTRLA &= ~USB_SOFIE_bm;
 			}
 			#endif
 
@@ -222,8 +223,6 @@
 				}
 				
 				SetGlobalInterruptMask(CurrentGlobalInt);
-
-
 			}
 
 	#endif

LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h

@@ -109,7 +109,7 @@
 					CheckBytes <<= 1;
 				}
 
-				return (MaskVal << USB_EP_SIZE_gp);
+				return (MaskVal << USB_EP_BUFSIZE_gp);
 			}
 
 		/* Function Prototypes: */

LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.c

@@ -40,6 +40,8 @@ volatile uint8_t USB_CurrentMode = USB_MODE_None;
 volatile uint8_t USB_Options;
 #endif
 
+USB_EP_TABLE_t USB_EndpointTable ATTR_ALIGNED(2);
+
 void USB_Init(
                #if defined(USB_CAN_BE_BOTH)
                const uint8_t Mode
@@ -61,6 +63,16 @@ void USB_Init(
 	#endif
 	
 	USB_IsInitialized = true;
+	
+	uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
+	GlobalInterruptDisable();
+
+	NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
+	USB.CAL0 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL0));
+	NVM.CMD  = NVM_CMD_READ_CALIB_ROW_gc;
+	USB.CAL1 = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBCAL1));
+	
+	SetGlobalInterruptMask(CurrentGlobalInt);
 
 	USB_ResetInterface();	
 }
@@ -79,13 +91,17 @@ void USB_Disable(void)
 void USB_ResetInterface(void)
 {
 	if (USB_Options & USB_DEVICE_OPT_LOWSPEED)
-	  CLK.USBCTRL = ((((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBEN_bm);
+	  CLK.USBCTRL = ((((F_USB / 6000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 	else
-	  CLK.USBCTRL = ((((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBEN_bm);
+	  CLK.USBCTRL = ((((F_USB / 48000000) - 1) << CLK_USBPSDIV_gp) | CLK_USBSRC_PLL_gc | CLK_USBSEN_bm);
 	
 	USB_INT_DisableAllInterrupts();
 	USB_INT_ClearAllInterrupts();
 
+	// TODO: Config define for priority
+	USB.INTCTRLA = (2 << USB_INTLVL_gp);
+	PMIC.CTRL   |= (1 << PMIC_MEDLVLEX_bp);
+
 	USB_Controller_Reset();
 	USB_Init_Device();
 }
@@ -143,6 +159,8 @@ static void USB_Init_Device(void)
 							   ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
 							   ENDPOINT_BANK_SINGLE);
 
+	USB_INT_Enable(USB_INT_BUSEVENTI);
+
 	USB_Attach();
 }
 #endif

LUFA/Drivers/USB/Core/XMEGA/USBController_XMEGA.h

@@ -55,6 +55,13 @@
 		#include "../USBTask.h"
 		#include "../USBInterrupt.h"
 
+	/* Private Interface - For use in library only: */
+	#if !defined(__DOXYGEN__)
+		/* External Variables: */
+			extern USB_EP_TABLE_t USB_EndpointTable;
+	#endif
+	
+	/* Includes: */
 		#if defined(USB_CAN_BE_DEVICE) || defined(__DOXYGEN__)
 			#include "../Device.h"
 			#include "../Endpoint.h"

LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.c

@@ -33,13 +33,68 @@
 
 void USB_INT_DisableAllInterrupts(void)
 {
-	// TODO
+	USB.INTCTRLA     = 0;
+	USB.INTCTRLB     = 0;
 }
 
 void USB_INT_ClearAllInterrupts(void)
 {
-	// TODO
+	USB.INTFLAGSACLR = 0xFF;
+	USB.INTFLAGSBCLR = 0xFF;
 }
 
-// TODO: USB ISR
+ISR(USB_BUSEVENT_vect)
+{
+	#if !defined(NO_SOF_EVENTS)
+	if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
+	{
+		USB_INT_Clear(USB_INT_SOFI);
+
+		EVENT_USB_Device_StartOfFrame();
+	}
+	#endif
+
+	if (USB_INT_HasOccurred(USB_INT_BUSEVENTI_Suspend))
+	{
+		USB_INT_Clear(USB_INT_BUSEVENTI_Suspend);
+
+		#if !defined(NO_LIMITED_CONTROLLER_CONNECT)
+		USB_DeviceState = DEVICE_STATE_Unattached;
+		EVENT_USB_Device_Disconnect();
+		#else
+		USB_DeviceState = DEVICE_STATE_Suspended;
+		EVENT_USB_Device_Suspend();
+		#endif
+	}
+
+	if (USB_INT_HasOccurred(USB_INT_BUSEVENTI_Resume))
+	{
+		USB_INT_Clear(USB_INT_BUSEVENTI_Resume);
+		
+		if (USB_Device_ConfigurationNumber)
+		  USB_DeviceState = DEVICE_STATE_Configured;
+		else
+		  USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
+
+		#if !defined(NO_LIMITED_CONTROLLER_CONNECT)
+		EVENT_USB_Device_Connect();
+		#else
+		EVENT_USB_Device_WakeUp();
+		#endif
+	}
+
+	if (USB_INT_HasOccurred(USB_INT_BUSEVENTI_Reset))
+	{
+		USB_INT_Clear(USB_INT_BUSEVENTI_Reset);
+		
+		USB_DeviceState                = DEVICE_STATE_Default;
+		USB_Device_ConfigurationNumber = 0;
+
+		Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
+		                           ENDPOINT_DIR_OUT, USB_Device_ControlEndpointSize,
+		                           ENDPOINT_BANK_SINGLE);
+
+		EVENT_USB_Device_Reset();
+	}
+}
 

LUFA/Drivers/USB/Core/XMEGA/USBInterrupt_XMEGA.h

@@ -59,38 +59,92 @@
 		/* Enums: */
 			enum USB_Interrupts_t
 			{
-				USB_INT_NONE  = 0, // TODO
+				USB_INT_BUSEVENTI         = 1,
+				USB_INT_BUSEVENTI_Suspend = 2,
+				USB_INT_BUSEVENTI_Resume  = 3,
+				USB_INT_BUSEVENTI_Reset   = 4,
+				USB_INT_SOFI              = 5,
 			};
 
 		/* Inline Functions: */
 			static inline void USB_INT_Enable(const uint8_t Interrupt) ATTR_ALWAYS_INLINE;
 			static inline void USB_INT_Enable(const uint8_t Interrupt)
 			{
-				// TODO
+				switch (Interrupt)
+				{
+					case USB_INT_BUSEVENTI:
+						USB.INTCTRLA |=  USB_BUSEVIE_bm;
+						return;
+					case USB_INT_SOFI:
+						USB.INTCTRLA |=  USB_SOFIE_bm;						
+						return;				
+				}
 			}
 
 			static inline void USB_INT_Disable(const uint8_t Interrupt) ATTR_ALWAYS_INLINE;
 			static inline void USB_INT_Disable(const uint8_t Interrupt)
 			{
-				// TODO
+				switch (Interrupt)
+				{
+					case USB_INT_BUSEVENTI:
+						USB.INTCTRLA &= ~USB_BUSEVIE_bm;
+						return;
+					case USB_INT_SOFI:
+						USB.INTCTRLA &= ~USB_SOFIE_bm;						
+						return;				
+				}
 			}
 			
 			static inline void USB_INT_Clear(const uint8_t Interrupt) ATTR_ALWAYS_INLINE;
 			static inline void USB_INT_Clear(const uint8_t Interrupt)
 			{
-				// TODO
+				switch (Interrupt)
+				{
+					case USB_INT_BUSEVENTI_Suspend:
+						USB.INTFLAGSACLR = USB_SUSPENDIF_bm;
+						return;
+					case USB_INT_BUSEVENTI_Resume:
+						USB.INTFLAGSACLR = USB_RESUMEIF_bm;
+						return;
+					case USB_INT_BUSEVENTI_Reset:
+						USB.INTFLAGSACLR = USB_RSTIF_bm;
+						return;
+					case USB_INT_SOFI:
+						USB.INTFLAGSACLR = USB_SOFIF_bm;						
+						return;				
+				}
 			}
 			
 			static inline bool USB_INT_IsEnabled(const uint8_t Interrupt) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline bool USB_INT_IsEnabled(const uint8_t Interrupt)
 			{
-				return false; // TODO
+				switch (Interrupt)
+				{
+					case USB_INT_BUSEVENTI:
+						return (USB.INTCTRLA & USB_BUSEVIE_bm);
+					case USB_INT_SOFI:
+						return (USB.INTCTRLA & USB_SOFIE_bm);
+				}
+				
+				return false;
 			}
 		
 			static inline bool USB_INT_HasOccurred(const uint8_t Interrupt) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 			static inline bool USB_INT_HasOccurred(const uint8_t Interrupt)
 			{
-				return false; // TODO
+				switch (Interrupt)
+				{
+					case USB_INT_BUSEVENTI_Suspend:
+						return (USB.INTFLAGSACLR & USB_SUSPENDIF_bm);
+					case USB_INT_BUSEVENTI_Resume:
+						return (USB.INTFLAGSACLR & USB_RESUMEIF_bm);
+					case USB_INT_BUSEVENTI_Reset:
+						return (USB.INTFLAGSACLR & USB_RSTIF_bm);
+					case USB_INT_SOFI:
+						return (USB.INTFLAGSACLR & USB_SOFIF_bm);
+				}
+				
+				return false;
 			}
 
 		/* Includes: */