Merge branch 'master' into eco-keyboard

8 files changed, 1181 insertions, 0 deletions

diff --git a/lib/lufa/LUFA/Platform/Platform.h b/lib/lufa/LUFA/Platform/Platform.h
new file mode 100644
index 0000000000..9997d797f7
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/Platform.h
@@ -0,0 +1,80 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief Architecture Specific Hardware Platform Drivers.
+ *
+ *  This file is the master dispatch header file for the device-specific hardware platform drivers, for low level
+ *  hardware configuration and management. The platform drivers are a set of drivers which are designed to provide
+ *  a high level management layer for the various low level system functions such as clock control and interrupt
+ *  management.
+ *
+ *  User code may choose to either include this master dispatch header file to include all available platform
+ *  driver header files for the current architecture, or may choose to only include the specific platform driver
+ *  modules required for a particular application.
+ */
+
+/** \defgroup Group_PlatformDrivers System Platform Drivers - LUFA/Platform/Platform.h
+ *  \brief Hardware platform drivers.
+ *
+ *  \section Sec_PlatformDrivers_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - <b>UC3 Architecture Only:</b> LUFA/Platform/UC3/InterruptManagement.c <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
+ *    - <b>UC3 Architecture Only:</b> LUFA/Platform/UC3/Exception.S <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
+ *
+ *  \section Sec_PlatformDrivers_ModDescription Module Description
+ *  Device-specific hardware platform drivers, for low level hardware configuration and management. The platform
+ *  drivers are a set of drivers which are designed to provide a high level management layer for the various low level
+ *  system functions such as clock control and interrupt management.
+ *
+ *  User code may choose to either include this master dispatch header file to include all available platform
+ *  driver header files for the current architecture, or may choose to only include the specific platform driver
+ *  modules required for a particular application.
+ *
+ *  \note The exact APIs and availability of sub-modules within the platform driver group may vary depending on the
+ *        target used - see individual target module documentation for the API specific to your target processor.
+ */
+
+#ifndef __LUFA_PLATFORM_H__
+#define __LUFA_PLATFORM_H__
+
+	/* Includes: */
+		#include "../Common/Common.h"
+
+	/* Includes: */
+		#if (ARCH == ARCH_UC3)
+			#include "UC3/ClockManagement.h"
+			#include "UC3/InterruptManagement.h"
+		#elif (ARCH == ARCH_XMEGA)
+			#include "XMEGA/ClockManagement.h"
+		#endif
+
+#endif
+
diff --git a/lib/lufa/LUFA/Platform/UC3/ClockManagement.h b/lib/lufa/LUFA/Platform/UC3/ClockManagement.h
new file mode 100644
index 0000000000..5f286d51d5
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/UC3/ClockManagement.h
@@ -0,0 +1,338 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief Module Clock Driver for the AVR32 UC3 microcontrollers.
+ *
+ *  Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration
+ *  of the various clocks within the device to clock the various peripherals.
+ */
+
+/** \ingroup Group_PlatformDrivers_UC3
+ *  \defgroup Group_PlatformDrivers_UC3Clocks Clock Management Driver - LUFA/Platform/UC3/ClockManagement.h
+ *  \brief Module Clock Driver for the AVR32 UC3 microcontrollers.
+ *
+ *  \section Sec_PlatformDrivers_UC3Clocks_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - None
+ *
+ *  \section Sec_PlatformDrivers_UC3Clocks_ModDescription Module Description
+ *  Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration
+ *  of the various clocks within the device to clock the various peripherals.
+ *
+ *  Usage Example:
+ *  \code
+ *		#include <LUFA/Platform/UC3/ClockManagement.h>
+ *
+ *		void main(void)
+ *		{
+ *			// Start the master external oscillator which will be used as the main clock reference
+ *			UC3CLK_StartExternalOscillator(0, EXOSC_MODE_8MHZ_OR_MORE, EXOSC_START_0CLK);
+ *
+ *			// Start the PLL for the CPU clock, switch CPU to it
+ *			UC3CLK_StartPLL(0, CLOCK_SRC_OSC0, 12000000, F_CPU);
+ *			UC3CLK_SetCPUClockSource(CLOCK_SRC_PLL0, F_CPU);
+ *
+ *			// Start the PLL for the USB Generic Clock module
+ *			UC3CLK_StartPLL(1, CLOCK_SRC_OSC0, 12000000, 48000000);
+ *		}
+ *  \endcode
+ *
+ *  @{
+ */
+
+#ifndef _UC3_CLOCK_MANAGEMENT_H_
+#define _UC3_CLOCK_MANAGEMENT_H_
+
+	/* Includes: */
+		#include "../../Common/Common.h"
+
+	/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Enum for the possible external oscillator types. */
+			enum UC3_Extern_OSC_ClockTypes_t
+			{
+				EXOSC_MODE_CLOCK         = AVR32_PM_OSCCTRL0_MODE_EXT_CLOCK,  /**< External clock (non-crystal) mode. */
+				EXOSC_MODE_900KHZ_MAX    = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G0, /**< External crystal oscillator equal to or slower than 900KHz. */
+				EXOSC_MODE_3MHZ_MAX      = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G1, /**< External crystal oscillator equal to or slower than 3MHz. */
+				EXOSC_MODE_8MHZ_MAX      = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G2, /**< External crystal oscillator equal to or slower than 8MHz. */
+				EXOSC_MODE_8MHZ_OR_MORE  = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G3, /**< External crystal oscillator equal to or faster than 8MHz. */
+			};
+
+			/** Enum for the possible external oscillator startup times. */
+			enum UC3_Extern_OSC_ClockStartup_t
+			{
+				EXOSC_START_0CLK         = AVR32_PM_OSCCTRL0_STARTUP_0_RCOSC,     /**< Immediate startup, no delay. */
+				EXOSC_START_64CLK        = AVR32_PM_OSCCTRL0_STARTUP_64_RCOSC,    /**< Wait 64 clock cycles before startup for stability. */
+				EXOSC_START_128CLK       = AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC,   /**< Wait 128 clock cycles before startup for stability. */
+				EXOSC_START_2048CLK      = AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC,  /**< Wait 2048 clock cycles before startup for stability. */
+				EXOSC_START_4096CLK      = AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC,  /**< Wait 4096 clock cycles before startup for stability. */
+				EXOSC_START_8192CLK      = AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC,  /**< Wait 8192 clock cycles before startup for stability. */
+				EXOSC_START_16384CLK     = AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC, /**< Wait 16384 clock cycles before startup for stability. */
+			};
+
+			/** Enum for the possible module clock sources. */
+			enum UC3_System_ClockSource_t
+			{
+				CLOCK_SRC_SLOW_CLK       = 0, /**< Clock sourced from the internal slow clock. */
+				CLOCK_SRC_OSC0           = 1, /**< Clock sourced from the Oscillator 0 clock. */
+				CLOCK_SRC_OSC1           = 2, /**< Clock sourced from the Oscillator 1 clock. */
+				CLOCK_SRC_PLL0           = 3, /**< Clock sourced from the PLL 0 clock. */
+				CLOCK_SRC_PLL1           = 4, /**< Clock sourced from the PLL 1 clock. */
+			};
+
+		/* Inline Functions: */
+			/** Starts the given external oscillator of the UC3 microcontroller, with the given options. This routine blocks until
+			 *  the oscillator is ready for use.
+			 *
+			 *  \param[in] Channel  Index of the external oscillator to start.
+			 *  \param[in] Type     Type of clock attached to the given oscillator channel, a value from \ref UC3_Extern_OSC_ClockTypes_t.
+			 *  \param[in] Startup  Startup time of the external oscillator, a value from \ref UC3_Extern_OSC_ClockStartup_t.
+			 *
+			 *  \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool UC3CLK_StartExternalOscillator(const uint8_t Channel,
+			                                                  const uint8_t Type,
+			                                                  const uint8_t Startup) ATTR_ALWAYS_INLINE;
+			static inline bool UC3CLK_StartExternalOscillator(const uint8_t Channel,
+			                                                  const uint8_t Type,
+			                                                  const uint8_t Startup)
+			{
+				switch (Channel)
+				{
+					case 0:
+						AVR32_PM.OSCCTRL0.startup = Startup;
+						AVR32_PM.OSCCTRL0.mode    = Type;
+						break;
+					case 1:
+						AVR32_PM.OSCCTRL1.startup = Startup;
+						AVR32_PM.OSCCTRL1.mode    = Type;
+						break;
+					default:
+						return false;
+				}
+
+				AVR32_PM.mcctrl |= (1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel));
+
+				while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_OSC0RDY_OFFSET + Channel))));
+				return true;
+			}
+
+			/** Stops the given external oscillator of the UC3 microcontroller.
+			 *
+			 *  \param[in] Channel  Index of the external oscillator to stop.
+			 */
+			static inline void UC3CLK_StopExternalOscillator(const uint8_t Channel) ATTR_ALWAYS_INLINE;
+			static inline void UC3CLK_StopExternalOscillator(const uint8_t Channel)
+			{
+				AVR32_PM.mcctrl &= ~(1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel));
+			}
+
+			/** Starts the given PLL of the UC3 microcontroller, with the given options. This routine blocks until the PLL is ready for use.
+			 *
+			 *  \attention The output frequency must be equal to or greater than the source frequency.
+			 *
+			 *  \param[in] Channel     Index of the PLL to start.
+			 *  \param[in] Source      Clock source for the PLL, a value from \ref UC3_System_ClockSource_t.
+			 *  \param[in] SourceFreq  Frequency of the PLL's clock source, in Hz.
+			 *  \param[in] Frequency   Target frequency of the PLL's output.
+			 *
+			 *  \return Boolean \c true if the PLL was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool UC3CLK_StartPLL(const uint8_t Channel,
+			                                   const uint8_t Source,
+			                                   const uint32_t SourceFreq,
+			                                   const uint32_t Frequency) ATTR_ALWAYS_INLINE;
+			static inline bool UC3CLK_StartPLL(const uint8_t Channel,
+			                                   const uint8_t Source,
+			                                   const uint32_t SourceFreq,
+			                                   const uint32_t Frequency)
+			{
+				if (SourceFreq > Frequency)
+				  return false;
+
+				switch (Source)
+				{
+					case CLOCK_SRC_OSC0:
+						AVR32_PM.PLL[Channel].pllosc = 0;
+						break;
+					case CLOCK_SRC_OSC1:
+						AVR32_PM.PLL[Channel].pllosc = 1;
+						break;
+					default:
+						return false;
+				}
+
+				AVR32_PM.PLL[Channel].pllmul = (Frequency / SourceFreq) ? (((Frequency / SourceFreq) - 1) / 2) : 0;
+				AVR32_PM.PLL[Channel].plldiv = 0;
+				AVR32_PM.PLL[Channel].pllen  = true;
+
+				while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_LOCK0_OFFSET + Channel))));
+				return true;
+			}
+
+			/** Stops the given PLL of the UC3 microcontroller.
+			 *
+			 *  \param[in] Channel  Index of the PLL to stop.
+			 */
+			static inline void UC3CLK_StopPLL(const uint8_t Channel) ATTR_ALWAYS_INLINE;
+			static inline void UC3CLK_StopPLL(const uint8_t Channel)
+			{
+				AVR32_PM.PLL[Channel].pllen = false;
+			}
+
+			/** Starts the given Generic Clock of the UC3 microcontroller, with the given options.
+			 *
+			 *  \param[in] Channel     Index of the Generic Clock to start.
+			 *  \param[in] Source      Clock source for the Generic Clock, a value from \ref UC3_System_ClockSource_t.
+			 *  \param[in] SourceFreq  Frequency of the Generic Clock's clock source, in Hz.
+			 *  \param[in] Frequency   Target frequency of the Generic Clock's output.
+			 *
+			 *  \return Boolean \c true if the Generic Clock was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool UC3CLK_StartGenericClock(const uint8_t Channel,
+			                                            const uint8_t Source,
+			                                            const uint32_t SourceFreq,
+			                                            const uint32_t Frequency) ATTR_ALWAYS_INLINE;
+			static inline bool UC3CLK_StartGenericClock(const uint8_t Channel,
+			                                            const uint8_t Source,
+			                                            const uint32_t SourceFreq,
+			                                            const uint32_t Frequency)
+			{
+				if (Channel >= AVR32_PM_GCLK_NUM)
+				  return false;
+
+				if (SourceFreq < Frequency)
+				  return false;
+
+				switch (Source)
+				{
+					case CLOCK_SRC_OSC0:
+						AVR32_PM.GCCTRL[Channel].pllsel = false;
+						AVR32_PM.GCCTRL[Channel].oscsel = 0;
+						break;
+					case CLOCK_SRC_OSC1:
+						AVR32_PM.GCCTRL[Channel].pllsel = false;
+						AVR32_PM.GCCTRL[Channel].oscsel = 1;
+						break;
+					case CLOCK_SRC_PLL0:
+						AVR32_PM.GCCTRL[Channel].pllsel = true;
+						AVR32_PM.GCCTRL[Channel].oscsel = 0;
+						break;
+					case CLOCK_SRC_PLL1:
+						AVR32_PM.GCCTRL[Channel].pllsel = true;
+						AVR32_PM.GCCTRL[Channel].oscsel = 1;
+						break;
+					default:
+						return false;
+				}
+
+				AVR32_PM.GCCTRL[Channel].diven = (SourceFreq > Frequency) ? true : false;
+				AVR32_PM.GCCTRL[Channel].div   = (((SourceFreq / Frequency) - 1) / 2);
+				AVR32_PM.GCCTRL[Channel].cen   = true;
+
+				return true;
+			}
+
+			/** Stops the given generic clock of the UC3 microcontroller.
+			 *
+			 *  \param[in] Channel  Index of the generic clock to stop.
+			 *
+			 *  \return Boolean \c true if the generic clock was successfully stopped, \c false if invalid parameters specified.
+			 */
+			static inline bool UC3CLK_StopGenericClock(const uint8_t Channel) ATTR_ALWAYS_INLINE;
+			static inline bool UC3CLK_StopGenericClock(const uint8_t Channel)
+			{
+				if (Channel >= AVR32_PM_GCLK_NUM)
+				  return false;
+
+				AVR32_PM.GCCTRL[Channel].cen = false;
+
+				return true;
+			}
+
+			/** Sets the clock source for the main microcontroller core. The given clock source should be configured
+			 *  and ready for use before this function is called.
+			 *
+			 *  This function will configure the FLASH controller's wait states automatically to suit the given clock source.
+			 *
+			 *  \param[in] Source      Clock source for the CPU core, a value from \ref UC3_System_ClockSource_t.
+			 *  \param[in] SourceFreq  Frequency of the CPU core's clock source, in Hz.
+			 *
+			 *  \return Boolean \c true if the CPU core clock was successfully altered, \c false if invalid parameters specified.
+			 */
+			static inline bool UC3CLK_SetCPUClockSource(const uint8_t Source,
+			                                            const uint32_t SourceFreq) ATTR_ALWAYS_INLINE;
+			static inline bool UC3CLK_SetCPUClockSource(const uint8_t Source,
+			                                            const uint32_t SourceFreq)
+			{
+				if (SourceFreq > AVR32_PM_CPU_MAX_FREQ)
+				  return false;
+
+				AVR32_FLASHC.FCR.fws = (SourceFreq > AVR32_FLASHC_FWS_0_MAX_FREQ) ? true : false;
+
+				switch (Source)
+				{
+					#if defined(AVR32_PM_MCCTRL_MCSEL_SLOW)
+					case CLOCK_SRC_SLOW_CLK:
+						AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_SLOW;
+						break;
+					#endif
+					#if defined(AVR32_PM_MCCTRL_MCSEL_OSC0)
+					case CLOCK_SRC_OSC0:
+						AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_OSC0;
+						break;
+					#endif
+					#if defined(AVR32_PM_MCCTRL_MCSEL_PLL0)
+					case CLOCK_SRC_PLL0:
+						AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_PLL0;
+						break;
+					#endif
+					default:
+						return false;
+				}
+
+				return true;
+			}
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+
+#endif
+
+/** @} */
+
diff --git a/lib/lufa/LUFA/Platform/UC3/Exception.S b/lib/lufa/LUFA/Platform/UC3/Exception.S
new file mode 100644
index 0000000000..59f16f16f1
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/UC3/Exception.S
@@ -0,0 +1,128 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#if defined(__AVR32__)
+#include <avr32/io.h>
+
+.section .exception_handlers, "ax", @progbits
+
+// ================= EXCEPTION TABLE ================
+.balign  0x200
+.global  EVBA_Table
+EVBA_Table:
+
+.org  0x000
+Exception_Unrecoverable_Exception:
+	rjmp $
+.org  0x004
+Exception_TLB_Multiple_Hit:
+	rjmp $
+.org  0x008
+Exception_Bus_Error_Data_Fetch:
+	rjmp $
+.org  0x00C
+Exception_Bus_Error_Instruction_Fetch:
+	rjmp $
+.org  0x010
+Exception_NMI:
+	rjmp $
+.org  0x014
+Exception_Instruction_Address:
+	rjmp $
+.org  0x018
+Exception_ITLB_Protection:
+	rjmp $
+.org  0x01C
+Exception_OCD_Breakpoint:
+	rjmp $
+.org  0x020
+Exception_Illegal_Opcode:
+	rjmp $
+.org  0x024
+Exception_Unimplemented_Instruction:
+	rjmp $
+.org  0x028
+Exception_Privilege_Violation:
+	rjmp $
+.org  0x02C
+Exception_Floating_Point:
+	rjmp $
+.org  0x030
+Exception_Coprocessor_Absent:
+	rjmp $
+.org  0x034
+Exception_Data_Address_Read:
+	rjmp $
+.org  0x038
+Exception_Data_Address_Write:
+	rjmp $
+.org  0x03C
+Exception_DTLB_Protection_Read:
+	rjmp $
+.org  0x040
+Exception_DTLB_Protection_Write:
+	rjmp $
+.org  0x044
+Exception_DTLB_Modified:
+	rjmp $
+.org  0x050
+Exception_ITLB_Miss:
+	rjmp $
+.org  0x060
+Exception_DTLB_Miss_Read:
+	rjmp $
+.org  0x070
+Exception_DTLB_Miss_Write:
+	rjmp $
+.org  0x100
+Exception_Supervisor_Call:
+    rjmp $
+// ============== END OF EXCEPTION TABLE =============
+
+// ============= GENERAL INTERRUPT HANDLER ===========
+.balign 4
+.irp    Level, 0, 1, 2, 3
+Exception_INT\Level:
+	mov     r12, \Level
+	call    INTC_GetInterruptHandler
+	mov     pc, r12
+.endr
+// ========= END OF GENERAL INTERRUPT HANDLER ========
+
+// ====== GENERAL INTERRUPT HANDLER OFFSET TABLE ======
+.balign 4
+.global Autovector_Table
+Autovector_Table:
+.irp    Level, 0, 1, 2, 3
+	.word ((AVR32_INTC_INT0 + \Level) << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (Exception_INT\Level - EVBA_Table)
+.endr
+// === END OF GENERAL INTERRUPT HANDLER OFFSET TABLE ===
+
+#endif
diff --git a/lib/lufa/LUFA/Platform/UC3/InterruptManagement.c b/lib/lufa/LUFA/Platform/UC3/InterruptManagement.c
new file mode 100644
index 0000000000..b99be24b97
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/UC3/InterruptManagement.c
@@ -0,0 +1,62 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#include "../../Common/Common.h"
+#if (ARCH == ARCH_UC3)
+
+#define  __INCLUDE_FROM_INTMANAGEMENT_C
+#include "InterruptManagement.h"
+
+/** Interrupt vector table, containing the ISR to call for each interrupt group */
+InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS];
+
+/** ISR for unhandled interrupt groups */
+ISR(Unhandled_Interrupt)
+{
+	for (;;);
+}
+
+InterruptHandlerPtr_t INTC_GetInterruptHandler(const uint_reg_t InterruptLevel)
+{
+	return InterruptHandlers[AVR32_INTC.icr[AVR32_INTC_INT3 - InterruptLevel]];
+}
+
+void INTC_Init(void)
+{
+	for (uint8_t InterruptGroup = 0; InterruptGroup < AVR32_INTC_NUM_INT_GRPS; InterruptGroup++)
+	{
+		InterruptHandlers[InterruptGroup] = Unhandled_Interrupt;
+		AVR32_INTC.ipr[InterruptGroup]    = Autovector_Table[AVR32_INTC_INT0];
+	}
+
+	__builtin_mtsr(AVR32_EVBA, (uintptr_t)&EVBA_Table);
+}
+
+#endif
diff --git a/lib/lufa/LUFA/Platform/UC3/InterruptManagement.h b/lib/lufa/LUFA/Platform/UC3/InterruptManagement.h
new file mode 100644
index 0000000000..b051930370
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/UC3/InterruptManagement.h
@@ -0,0 +1,174 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief Interrupt Controller Driver for the AVR32 UC3 microcontrollers.
+ *
+ *  Interrupt controller driver for the AVR32 UC3 microcontrollers, for the configuration of interrupt
+ *  handlers within the device.
+ */
+
+/** \ingroup Group_PlatformDrivers_UC3
+ *  \defgroup Group_PlatformDrivers_UC3Interrupts Interrupt Controller Driver - LUFA/Platform/UC3/InterruptManagement.h
+ *  \brief Interrupt Controller Driver for the AVR32 UC3 microcontrollers.
+ *
+ *  \section Sec_PlatformDrivers_UC3Interrupts_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - LUFA/Platform/UC3/InterruptManagement.c <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
+ *    - LUFA/Platform/UC3/Exception.S <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
+ *
+ *  \section Sec_PlatformDrivers_UC3Interrupts_ModDescription Module Description
+ *  Interrupt controller driver for the AVR32 UC3 microcontrollers, for the configuration of interrupt
+ *  handlers within the device.
+ *
+ *  Usage Example:
+ *  \code
+ *		#include <LUFA/Platform/UC3/InterruptManagement.h>
+ *
+ *		ISR(USB_Group_IRQ_Handler)
+ *		{
+ *			// USB group handler code here
+ *		}
+ *
+ *		void main(void)
+ *		{
+ *			INTC_Init();
+ *			INTC_RegisterGroupHandler(INTC_IRQ_GROUP(AVR32_USBB_IRQ), AVR32_INTC_INT0, USB_Group_IRQ_Handler);
+ *		}
+ *  \endcode
+ *
+ *  @{
+ */
+
+#ifndef _UC3_INTERRUPT_MANAGEMENT_H_
+#define _UC3_INTERRUPT_MANAGEMENT_H_
+
+	/* Includes: */
+		#include "../../Common/Common.h"
+
+	/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Private Interface - For use in library only: */
+	#if !defined(__DOXYGEN__)
+		/* Type Defines: */
+			typedef void (*InterruptHandlerPtr_t)(void);
+
+		/* External Variables: */
+			#if defined(__INCLUDE_FROM_INTMANAGEMENT_C)
+				extern const void        EVBA_Table;
+			#endif
+			extern InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS];
+			extern const uint32_t        Autovector_Table[];
+	#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Converts a given interrupt index into its associated interrupt group.
+			 *
+			 *  \param[in] IRQIndex  Index of the interrupt request to convert.
+			 *
+			 *  \return Interrupt group number associated with the interrupt index.
+			 */
+			#define INTC_IRQ_GROUP(IRQIndex)  (IRQIndex / 32)
+
+			/** Converts a given interrupt index into its associated interrupt line.
+			 *
+			 *  \param[in] IRQIndex  Index of the interrupt request to convert.
+			 *
+			 *  \return Interrupt line number associated with the interrupt index.
+			 */
+			#define INTC_IRQ_LINE(IRQIndex)   (IRQIndex % 32)
+
+		/* Function Prototypes: */
+			/** Initializes the interrupt controller ready to handle interrupts. This must be called at the
+			 *  start of the user program before any interrupts are registered or enabled.
+			 */
+			void INTC_Init(void);
+
+			/** Retrieves the associated interrupt handler for the interrupt group currently being fired. This
+			 *  is called directly from the exception handler routine before dispatching to the ISR.
+			 *
+			 *  \param[in] InterruptLevel  Priority level of the interrupt.
+			 *
+			 *  \return Pointer to the associated interrupt handler function, or NULL if no handler set.
+			 */
+			InterruptHandlerPtr_t INTC_GetInterruptHandler(const uint_reg_t InterruptLevel);
+
+		/* Inline Functions: */
+			/** Registers a handler for a given interrupt group. On the AVR32 UC3 devices, interrupts are grouped by
+			 *  peripheral. To save on SRAM used, a single ISR handles all interrupt lines within a single group - to
+			 *  determine the exact line that has interrupted within the group ISR handler, use \ref INTC_GetGroupInterrupts().
+			 *
+			 *  If multiple interrupts with the same group are registered, the last registered handler will become the
+			 *  handler called for interrupts raised within that group.
+			 *
+			 *  To obtain the group number of a specific interrupt index, use the \ref INTC_IRQ_GROUP() macro.
+			 *
+			 *  \param[in] GroupNumber       Group number of the interrupt group to register a handler for.
+			 *  \param[in] InterruptLevel    Priority level for the specified interrupt, a \c AVR32_INTC_INT* mask.
+			 *  \param[in] Handler           Address of the ISR handler for the interrupt group.
+			 */
+			static inline void INTC_RegisterGroupHandler(const uint16_t GroupNumber,
+			                                             const uint8_t InterruptLevel,
+			                                             const InterruptHandlerPtr_t Handler) ATTR_ALWAYS_INLINE;
+			static inline void INTC_RegisterGroupHandler(const uint16_t GroupNumber,
+			                                             const uint8_t InterruptLevel,
+			                                             const InterruptHandlerPtr_t Handler)
+			{
+				InterruptHandlers[GroupNumber] = Handler;
+				AVR32_INTC.ipr[GroupNumber]    = Autovector_Table[InterruptLevel];
+			}
+
+			/** Retrieves the pending interrupts for a given interrupt group. The result of this function should be masked
+			 *  against interrupt request indexes converted to a request line number via the \ref INTC_IRQ_LINE() macro. To
+			 *  obtain the group number of a given interrupt request, use the \ref INTC_IRQ_GROUP() macro.
+			 *
+			 *  \param[in] GroupNumber Group number of the interrupt group to check.
+			 *
+			 *  \return Mask of pending interrupt lines for the given interrupt group.
+			 */
+			static inline uint_reg_t INTC_GetGroupInterrupts(const uint16_t GroupNumber) ATTR_ALWAYS_INLINE;
+			static inline uint_reg_t INTC_GetGroupInterrupts(const uint16_t GroupNumber)
+			{
+				return AVR32_INTC.irr[GroupNumber];
+			}
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+
+#endif
+
+/** @} */
+
diff --git a/lib/lufa/LUFA/Platform/UC3/UC3ExperimentalInfo.txt b/lib/lufa/LUFA/Platform/UC3/UC3ExperimentalInfo.txt
new file mode 100644
index 0000000000..8aadb3ed79
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/UC3/UC3ExperimentalInfo.txt
@@ -0,0 +1 @@
+Please note that the UC3 architecture support is EXPERIMENTAL at this time, and may be non-functional/incomplete in some areas. Please refer to the Known Issues section of the LUFA manual.
\ No newline at end of file
diff --git a/lib/lufa/LUFA/Platform/XMEGA/ClockManagement.h b/lib/lufa/LUFA/Platform/XMEGA/ClockManagement.h
new file mode 100644
index 0000000000..eb941d9a30
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/XMEGA/ClockManagement.h
@@ -0,0 +1,397 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief Module Clock Driver for the AVR USB XMEGA microcontrollers.
+ *
+ *  Clock management driver for the AVR USB XMEGA microcontrollers. This driver allows for the configuration
+ *  of the various clocks within the device to clock the various peripherals.
+ */
+
+/** \ingroup Group_PlatformDrivers_XMEGA
+ *  \defgroup Group_PlatformDrivers_XMEGAClocks Clock Management Driver - LUFA/Platform/XMEGA/ClockManagement.h
+ *  \brief Module Clock Driver for the AVR USB XMEGA microcontrollers.
+ *
+ *  \section Sec_PlatformDrivers_XMEGAClocks_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - None
+ *
+ *  \section Sec_PlatformDrivers_XMEGAClocks_ModDescription Module Description
+ *  Clock management driver for the AVR USB XMEGA microcontrollers. This driver allows for the configuration
+ *  of the various clocks within the device to clock the various peripherals.
+ *
+ *  Usage Example:
+ *  \code
+ *   	#include <LUFA/Platform/XMEGA/ClockManagement.h>
+ *
+ *   	void main(void)
+ *   	{
+ *   		// Start the PLL to multiply the 2MHz RC oscillator to F_CPU and switch the CPU core to run from it
+ *   		XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
+ *   		XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
+ *
+ *   		// Start the 32MHz internal RC oscillator and start the DFLL to increase it to F_USB using the USB SOF as a reference
+ *   		XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
+ *   		XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
+ *   	}
+ *  \endcode
+ *
+ *  @{
+ */
+
+#ifndef _XMEGA_CLOCK_MANAGEMENT_H_
+#define _XMEGA_CLOCK_MANAGEMENT_H_
+
+	/* Includes: */
+		#include "../../Common/Common.h"
+
+	/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Enum for the possible external oscillator frequency ranges. */
+			enum XMEGA_Extern_OSC_ClockFrequency_t
+			{
+				EXOSC_FREQ_2MHZ_MAX      = OSC_FRQRANGE_04TO2_gc,  /**< External crystal oscillator equal to or slower than 2MHz. */
+				EXOSC_FREQ_9MHZ_MAX      = OSC_FRQRANGE_2TO9_gc,   /**< External crystal oscillator equal to or slower than 9MHz. */
+				EXOSC_FREQ_12MHZ_MAX     = OSC_FRQRANGE_9TO12_gc,  /**< External crystal oscillator equal to or slower than 12MHz. */
+				EXOSC_FREQ_16MHZ_MAX     = OSC_FRQRANGE_12TO16_gc, /**< External crystal oscillator equal to or slower than 16MHz. */
+			};
+
+			/** Enum for the possible external oscillator startup times. */
+			enum XMEGA_Extern_OSC_ClockStartup_t
+			{
+				EXOSC_START_6CLK         = OSC_XOSCSEL_EXTCLK_gc,      /**< Wait 6 clock cycles before startup (external clock). */
+				EXOSC_START_32KCLK       = OSC_XOSCSEL_32KHz_gc,       /**< Wait 32K clock cycles before startup (32.768KHz crystal). */
+				EXOSC_START_256CLK       = OSC_XOSCSEL_XTAL_256CLK_gc, /**< Wait 256 clock cycles before startup. */
+				EXOSC_START_1KCLK        = OSC_XOSCSEL_XTAL_1KCLK_gc,  /**< Wait 1K clock cycles before startup. */
+				EXOSC_START_16KCLK       = OSC_XOSCSEL_XTAL_16KCLK_gc, /**< Wait 16K clock cycles before startup. */
+			};
+
+			/** Enum for the possible module clock sources. */
+			enum XMEGA_System_ClockSource_t
+			{
+				CLOCK_SRC_INT_RC2MHZ    = 0, /**< Clock sourced from the Internal 2MHz RC Oscillator clock. */
+				CLOCK_SRC_INT_RC32MHZ   = 1, /**< Clock sourced from the Internal 32MHz RC Oscillator clock. */
+				CLOCK_SRC_INT_RC32KHZ   = 2, /**< Clock sourced from the Internal 32KHz RC Oscillator clock. */
+				CLOCK_SRC_XOSC          = 3, /**< Clock sourced from the External Oscillator clock. */
+				CLOCK_SRC_PLL           = 4, /**< Clock sourced from the Internal PLL clock. */
+			};
+
+			/** Enum for the possible DFLL clock reference sources. */
+			enum XMEGA_System_DFLLReference_t
+			{
+				DFLL_REF_INT_RC32KHZ   = 0, /**< Reference clock sourced from the Internal 32KHz RC Oscillator clock. */
+				DFLL_REF_EXT_RC32KHZ   = 1, /**< Reference clock sourced from the External 32KHz RC Oscillator clock connected to TOSC pins. */
+				DFLL_REF_INT_USBSOF    = 2, /**< Reference clock sourced from the USB Start Of Frame packets. */
+			};
+
+		/* Inline Functions: */
+			/** Write a value to a location protected by the XMEGA CCP protection mechanism. This function uses inline assembly to ensure that
+			 *  the protected address is written to within four clock cycles of the CCP key being written.
+			 *
+			 *  \param[in] Address  Address to write to, a memory address protected by the CCP mechanism
+			 *  \param[in] Value    Value to write to the protected location
+			 */
+			static inline void XMEGACLK_CCP_Write(volatile void* Address, const uint8_t Value) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
+			static inline void XMEGACLK_CCP_Write(volatile void* Address, const uint8_t Value)
+			{
+				__asm__ __volatile__ (
+					"out %0, __zero_reg__" "\n\t" /* Zero RAMPZ using fixed zero value register */
+					"movw r30, %1"         "\n\t" /* Copy address to Z register pair */
+					"out %2, %3"           "\n\t" /* Write key to CCP register */
+					"st Z, %4"             "\n\t" /* Indirectly write value to address */
+					: /* No output operands */
+					: /* Input operands: */ "m" (RAMPZ), "e" (Address), "m" (CCP), "r" (CCP_IOREG_gc), "r" (Value)
+					: /* Clobbered registers: */ "r30", "r31"
+				);
+			}
+
+			/** Starts the external oscillator of the XMEGA microcontroller, with the given options. This routine blocks until
+			 *  the oscillator is ready for use.
+			 *
+			 *  \param[in] FreqRange  Frequency range of the external oscillator, a value from \ref XMEGA_Extern_OSC_ClockFrequency_t.
+			 *  \param[in] Startup    Startup time of the external oscillator, a value from \ref XMEGA_Extern_OSC_ClockStartup_t.
+			 *
+			 *  \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StartExternalOscillator(const uint8_t FreqRange,
+			                                                    const uint8_t Startup) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StartExternalOscillator(const uint8_t FreqRange,
+			                                                    const uint8_t Startup)
+			{
+				OSC.XOSCCTRL  = (FreqRange | ((Startup == EXOSC_START_32KCLK) ? OSC_X32KLPM_bm : 0) | Startup);
+				OSC.CTRL     |= OSC_XOSCEN_bm;
+
+				while (!(OSC.STATUS & OSC_XOSCRDY_bm));
+				return true;
+			}
+
+			/** Stops the external oscillator of the XMEGA microcontroller. */
+			static inline void XMEGACLK_StopExternalOscillator(void) ATTR_ALWAYS_INLINE;
+			static inline void XMEGACLK_StopExternalOscillator(void)
+			{
+				OSC.CTRL     &= ~OSC_XOSCEN_bm;
+			}
+
+			/** Starts the given internal oscillator of the XMEGA microcontroller, with the given options. This routine blocks until
+			 *  the oscillator is ready for use.
+			 *
+			 *  \param[in] Source  Internal oscillator to start, a value from \ref XMEGA_System_ClockSource_t.
+			 *
+			 *  \return Boolean \c true if the internal oscillator was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StartInternalOscillator(const uint8_t Source) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StartInternalOscillator(const uint8_t Source)
+			{
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						OSC.CTRL |= OSC_RC2MEN_bm;
+						while (!(OSC.STATUS & OSC_RC2MRDY_bm));
+						return true;
+					case CLOCK_SRC_INT_RC32MHZ:
+						OSC.CTRL |= OSC_RC32MEN_bm;
+						while (!(OSC.STATUS & OSC_RC32MRDY_bm));
+						return true;
+					case CLOCK_SRC_INT_RC32KHZ:
+						OSC.CTRL |= OSC_RC32KEN_bm;
+						while (!(OSC.STATUS & OSC_RC32KRDY_bm));
+						return true;
+					default:
+						return false;
+				}
+			}
+
+			/** Stops the given internal oscillator of the XMEGA microcontroller.
+			 *
+			 *  \param[in] Source  Internal oscillator to stop, a value from \ref XMEGA_System_ClockSource_t.
+			 *
+			 *  \return Boolean \c true if the internal oscillator was successfully stopped, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StopInternalOscillator(const uint8_t Source) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StopInternalOscillator(const uint8_t Source)
+			{
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						OSC.CTRL &= ~OSC_RC2MEN_bm;
+						return true;
+					case CLOCK_SRC_INT_RC32MHZ:
+						OSC.CTRL &= ~OSC_RC32MEN_bm;
+						return true;
+					case CLOCK_SRC_INT_RC32KHZ:
+						OSC.CTRL &= ~OSC_RC32KEN_bm;
+						return true;
+					default:
+						return false;
+				}
+			}
+
+			/** Starts the PLL of the XMEGA microcontroller, with the given options. This routine blocks until the PLL is ready for use.
+			 *
+			 *  \attention The output frequency must be equal to or greater than the source frequency.
+			 *
+			 *  \param[in] Source       Clock source for the PLL, a value from \ref XMEGA_System_ClockSource_t.
+			 *  \param[in] SourceFreq   Frequency of the PLL's clock source, in Hz.
+			 *  \param[in] Frequency    Target frequency of the PLL's output.
+			 *
+			 *  \return Boolean \c true if the PLL was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StartPLL(const uint8_t Source,
+			                                     const uint32_t SourceFreq,
+			                                     const uint32_t Frequency) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StartPLL(const uint8_t Source,
+			                                     const uint32_t SourceFreq,
+			                                     const uint32_t Frequency)
+			{
+				uint8_t MulFactor = (Frequency / SourceFreq);
+
+				if (SourceFreq > Frequency)
+				  return false;
+
+				if (MulFactor > 31)
+				  return false;
+
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						OSC.PLLCTRL = (OSC_PLLSRC_RC2M_gc  | MulFactor);
+						break;
+					case CLOCK_SRC_INT_RC32MHZ:
+						OSC.PLLCTRL = (OSC_PLLSRC_RC32M_gc | MulFactor);
+						break;
+					case CLOCK_SRC_XOSC:
+						OSC.PLLCTRL = (OSC_PLLSRC_XOSC_gc  | MulFactor);
+						break;
+					default:
+						return false;
+				}
+
+				OSC.CTRL |= OSC_PLLEN_bm;
+
+				while (!(OSC.STATUS & OSC_PLLRDY_bm));
+				return true;
+			}
+
+			/** Stops the PLL of the XMEGA microcontroller. */
+			static inline void XMEGACLK_StopPLL(void) ATTR_ALWAYS_INLINE;
+			static inline void XMEGACLK_StopPLL(void)
+			{
+				OSC.CTRL &= ~OSC_PLLEN_bm;
+			}
+
+			/** Starts the DFLL of the XMEGA microcontroller, with the given options.
+			 *
+			 *  \param[in] Source     RC Clock source for the DFLL, a value from \ref XMEGA_System_ClockSource_t.
+			 *  \param[in] Reference  Reference clock source for the DFLL, an value from \ref XMEGA_System_DFLLReference_t.
+			 *  \param[in] Frequency  Target frequency of the DFLL's output.
+			 *
+			 *  \return Boolean \c true if the DFLL was successfully started, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StartDFLL(const uint8_t Source,
+			                                      const uint8_t Reference,
+			                                      const uint32_t Frequency) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StartDFLL(const uint8_t Source,
+			                                      const uint8_t Reference,
+			                                      const uint32_t Frequency)
+			{
+				uint16_t DFLLCompare = (Frequency / 1024);
+
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						OSC.DFLLCTRL   |= (Reference << OSC_RC2MCREF_bp);
+						DFLLRC2M.COMP1  = (DFLLCompare & 0xFF);
+						DFLLRC2M.COMP2  = (DFLLCompare >> 8);
+						DFLLRC2M.CTRL   = DFLL_ENABLE_bm;
+						break;
+					case CLOCK_SRC_INT_RC32MHZ:
+						OSC.DFLLCTRL   |= (Reference << OSC_RC32MCREF_gp);
+						DFLLRC32M.COMP1 = (DFLLCompare & 0xFF);
+						DFLLRC32M.COMP2 = (DFLLCompare >> 8);
+
+						if (Reference == DFLL_REF_INT_USBSOF)
+						{
+							NVM.CMD        = NVM_CMD_READ_CALIB_ROW_gc;
+							DFLLRC32M.CALA = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBRCOSCA));
+							DFLLRC32M.CALB = pgm_read_byte(offsetof(NVM_PROD_SIGNATURES_t, USBRCOSC));
+							NVM.CMD        = 0;
+						}
+
+						DFLLRC32M.CTRL  = DFLL_ENABLE_bm;
+						break;
+					default:
+						return false;
+				}
+
+				return true;
+			}
+
+			/** Stops the given DFLL of the XMEGA microcontroller.
+			 *
+			 *  \param[in] Source  RC Clock source for the DFLL to be stopped, a value from \ref XMEGA_System_ClockSource_t.
+			 *
+			 *  \return Boolean \c true if the DFLL was successfully stopped, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_StopDFLL(const uint8_t Source) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_StopDFLL(const uint8_t Source)
+			{
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						DFLLRC2M.CTRL = 0;
+						break;
+					case CLOCK_SRC_INT_RC32MHZ:
+						DFLLRC32M.CTRL = 0;
+						break;
+					default:
+						return false;
+				}
+
+				return true;
+			}
+
+			/** Sets the clock source for the main microcontroller core. The given clock source should be configured
+			 *  and ready for use before this function is called.
+			 *
+			 *  \param[in] Source      Clock source for the CPU core, a value from \ref XMEGA_System_ClockSource_t.
+			 *
+			 *  \return Boolean \c true if the CPU core clock was successfully altered, \c false if invalid parameters specified.
+			 */
+			static inline bool XMEGACLK_SetCPUClockSource(const uint8_t Source) ATTR_ALWAYS_INLINE;
+			static inline bool XMEGACLK_SetCPUClockSource(const uint8_t Source)
+			{
+				uint8_t ClockSourceMask = 0;
+
+				switch (Source)
+				{
+					case CLOCK_SRC_INT_RC2MHZ:
+						ClockSourceMask = CLK_SCLKSEL_RC2M_gc;
+						break;
+					case CLOCK_SRC_INT_RC32MHZ:
+						ClockSourceMask = CLK_SCLKSEL_RC32M_gc;
+						break;
+					case CLOCK_SRC_INT_RC32KHZ:
+						ClockSourceMask = CLK_SCLKSEL_RC32K_gc;
+						break;
+					case CLOCK_SRC_XOSC:
+						ClockSourceMask = CLK_SCLKSEL_XOSC_gc;
+						break;
+					case CLOCK_SRC_PLL:
+						ClockSourceMask = CLK_SCLKSEL_PLL_gc;
+						break;
+					default:
+						return false;
+				}
+
+				uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
+				GlobalInterruptDisable();
+
+				XMEGACLK_CCP_Write(&CLK.CTRL, ClockSourceMask);
+
+				SetGlobalInterruptMask(CurrentGlobalInt);
+
+				Delay_MS(1);
+				return (CLK.CTRL == ClockSourceMask);
+			}
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+
+#endif
+
+/** @} */
+
diff --git a/lib/lufa/LUFA/Platform/XMEGA/XMEGAExperimentalInfo.txt b/lib/lufa/LUFA/Platform/XMEGA/XMEGAExperimentalInfo.txt
new file mode 100644
index 0000000000..42144aac48
--- /dev/null
+++ b/lib/lufa/LUFA/Platform/XMEGA/XMEGAExperimentalInfo.txt
@@ -0,0 +1 @@
+Please note that the XMEGA architecture support is EXPERIMENTAL at this time, and may be non-functional/incomplete in some areas. Please refer to the Known Issues section of the LUFA manual.
\ No newline at end of file