Merge commit '60b30c036397cb5627fa374bb930794b225daa29' as 'lib/lufa'

9 files changed, 3523 insertions, 0 deletions

diff --git a/lib/lufa/Demos/Device/LowLevel/Keyboard/Config/LUFAConfig.h b/lib/lufa/Demos/Device/LowLevel/Keyboard/Config/LUFAConfig.h
new file mode 100644
index 0000000000..00eefc7bf7
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/Keyboard/Config/LUFAConfig.h
@@ -0,0 +1,126 @@
+/*
+             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 LUFA Library Configuration Header File
+ *
+ *  This header file is used to configure LUFA's compile time options,
+ *  as an alternative to the compile time constants supplied through
+ *  a makefile.
+ *
+ *  For information on what each token does, refer to the LUFA
+ *  manual section "Summary of Compile Tokens".
+ */
+
+#ifndef _LUFA_CONFIG_H_
+#define _LUFA_CONFIG_H_
+
+	#if (ARCH == ARCH_AVR8)
+
+		/* Non-USB Related Configuration Tokens: */
+//		#define DISABLE_TERMINAL_CODES
+
+		/* USB Class Driver Related Tokens: */
+//		#define HID_HOST_BOOT_PROTOCOL_ONLY
+//		#define HID_STATETABLE_STACK_DEPTH       {Insert Value Here}
+//		#define HID_USAGE_STACK_DEPTH            {Insert Value Here}
+//		#define HID_MAX_COLLECTIONS              {Insert Value Here}
+//		#define HID_MAX_REPORTITEMS              {Insert Value Here}
+//		#define HID_MAX_REPORT_IDS               {Insert Value Here}
+//		#define NO_CLASS_DRIVER_AUTOFLUSH
+
+		/* General USB Driver Related Tokens: */
+//		#define ORDERED_EP_CONFIG
+		#define USE_STATIC_OPTIONS               (USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)
+		#define USB_DEVICE_ONLY
+//		#define USB_HOST_ONLY
+//		#define USB_STREAM_TIMEOUT_MS            {Insert Value Here}
+//		#define NO_LIMITED_CONTROLLER_CONNECT
+//		#define NO_SOF_EVENTS
+
+		/* USB Device Mode Driver Related Tokens: */
+//		#define USE_RAM_DESCRIPTORS
+		#define USE_FLASH_DESCRIPTORS
+//		#define USE_EEPROM_DESCRIPTORS
+//		#define NO_INTERNAL_SERIAL
+		#define FIXED_CONTROL_ENDPOINT_SIZE      8
+//		#define DEVICE_STATE_AS_GPIOR            {Insert Value Here}
+		#define FIXED_NUM_CONFIGURATIONS         1
+//		#define CONTROL_ONLY_DEVICE
+//		#define INTERRUPT_CONTROL_ENDPOINT
+//		#define NO_DEVICE_REMOTE_WAKEUP
+//		#define NO_DEVICE_SELF_POWER
+
+		/* USB Host Mode Driver Related Tokens: */
+//		#define HOST_STATE_AS_GPIOR              {Insert Value Here}
+//		#define USB_HOST_TIMEOUT_MS              {Insert Value Here}
+//		#define HOST_DEVICE_SETTLE_DELAY_MS	     {Insert Value Here}
+//		#define NO_AUTO_VBUS_MANAGEMENT
+//		#define INVERTED_VBUS_ENABLE_LINE
+
+	#elif (ARCH == ARCH_XMEGA)
+
+		/* Non-USB Related Configuration Tokens: */
+//		#define DISABLE_TERMINAL_CODES
+
+		/* USB Class Driver Related Tokens: */
+//		#define HID_HOST_BOOT_PROTOCOL_ONLY
+//		#define HID_STATETABLE_STACK_DEPTH       {Insert Value Here}
+//		#define HID_USAGE_STACK_DEPTH            {Insert Value Here}
+//		#define HID_MAX_COLLECTIONS              {Insert Value Here}
+//		#define HID_MAX_REPORTITEMS              {Insert Value Here}
+//		#define HID_MAX_REPORT_IDS               {Insert Value Here}
+//		#define NO_CLASS_DRIVER_AUTOFLUSH
+
+		/* General USB Driver Related Tokens: */
+		#define USE_STATIC_OPTIONS               (USB_DEVICE_OPT_FULLSPEED | USB_OPT_RC32MCLKSRC | USB_OPT_BUSEVENT_PRIHIGH)
+//		#define USB_STREAM_TIMEOUT_MS            {Insert Value Here}
+//		#define NO_LIMITED_CONTROLLER_CONNECT
+//		#define NO_SOF_EVENTS
+
+		/* USB Device Mode Driver Related Tokens: */
+//		#define USE_RAM_DESCRIPTORS
+		#define USE_FLASH_DESCRIPTORS
+//		#define USE_EEPROM_DESCRIPTORS
+//		#define NO_INTERNAL_SERIAL
+		#define FIXED_CONTROL_ENDPOINT_SIZE      8
+//		#define DEVICE_STATE_AS_GPIOR            {Insert Value Here}
+		#define FIXED_NUM_CONFIGURATIONS         1
+//		#define CONTROL_ONLY_DEVICE
+		#define MAX_ENDPOINT_INDEX               2
+//		#define NO_DEVICE_REMOTE_WAKEUP
+//		#define NO_DEVICE_SELF_POWER
+
+	#else
+
+		#error Unsupported architecture for this LUFA configuration file.
+
+	#endif
+#endif
diff --git a/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.c b/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.c
new file mode 100644
index 0000000000..d0e5bc4459
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.c
@@ -0,0 +1,255 @@
+/*
+             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)
+  Copyright 2010  Denver Gingerich (denver [at] ossguy [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
+ *
+ *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special
+ *  computer-readable structures which the host requests upon device enumeration, to determine
+ *  the device's capabilities and functions.
+ */
+
+#include "Descriptors.h"
+
+/** HID class report descriptor. This is a special descriptor constructed with values from the
+ *  USBIF HID class specification to describe the reports and capabilities of the HID device. This
+ *  descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
+ *  the device will send, and what it may be sent back from the host. Refer to the HID specification for
+ *  more details on HID report descriptors.
+ */
+const USB_Descriptor_HIDReport_Datatype_t PROGMEM KeyboardReport[] =
+{
+	HID_RI_USAGE_PAGE(8, 0x01), /* Generic Desktop */
+	HID_RI_USAGE(8, 0x06), /* Keyboard */
+	HID_RI_COLLECTION(8, 0x01), /* Application */
+		HID_RI_USAGE_PAGE(8, 0x07), /* Key Codes */
+		HID_RI_USAGE_MINIMUM(8, 0xE0), /* Keyboard Left Control */
+		HID_RI_USAGE_MAXIMUM(8, 0xE7), /* Keyboard Right GUI */
+		HID_RI_LOGICAL_MINIMUM(8, 0x00),
+		HID_RI_LOGICAL_MAXIMUM(8, 0x01),
+		HID_RI_REPORT_SIZE(8, 0x01),
+		HID_RI_REPORT_COUNT(8, 0x08),
+		HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
+		HID_RI_REPORT_COUNT(8, 0x01),
+		HID_RI_REPORT_SIZE(8, 0x08),
+		HID_RI_INPUT(8, HID_IOF_CONSTANT),
+		HID_RI_USAGE_PAGE(8, 0x08), /* LEDs */
+		HID_RI_USAGE_MINIMUM(8, 0x01), /* Num Lock */
+		HID_RI_USAGE_MAXIMUM(8, 0x05), /* Kana */
+		HID_RI_REPORT_COUNT(8, 0x05),
+		HID_RI_REPORT_SIZE(8, 0x01),
+		HID_RI_OUTPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE | HID_IOF_NON_VOLATILE),
+		HID_RI_REPORT_COUNT(8, 0x01),
+		HID_RI_REPORT_SIZE(8, 0x03),
+		HID_RI_OUTPUT(8, HID_IOF_CONSTANT),
+		HID_RI_LOGICAL_MINIMUM(8, 0x00),
+		HID_RI_LOGICAL_MAXIMUM(8, 0x65),
+		HID_RI_USAGE_PAGE(8, 0x07), /* Keyboard */
+		HID_RI_USAGE_MINIMUM(8, 0x00), /* Reserved (no event indicated) */
+		HID_RI_USAGE_MAXIMUM(8, 0x65), /* Keyboard Application */
+		HID_RI_REPORT_COUNT(8, 0x06),
+		HID_RI_REPORT_SIZE(8, 0x08),
+		HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
+	HID_RI_END_COLLECTION(0),
+};
+
+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
+ *  device characteristics, including the supported USB version, control endpoint size and the
+ *  number of device configurations. The descriptor is read out by the USB host when the enumeration
+ *  process begins.
+ */
+const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
+{
+	.Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
+
+	.USBSpecification       = VERSION_BCD(1,1,0),
+	.Class                  = USB_CSCP_NoDeviceClass,
+	.SubClass               = USB_CSCP_NoDeviceSubclass,
+	.Protocol               = USB_CSCP_NoDeviceProtocol,
+
+	.Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
+
+	.VendorID               = 0x03EB,
+	.ProductID              = 0x2042,
+	.ReleaseNumber          = VERSION_BCD(0,0,1),
+
+	.ManufacturerStrIndex   = STRING_ID_Manufacturer,
+	.ProductStrIndex        = STRING_ID_Product,
+	.SerialNumStrIndex      = NO_DESCRIPTOR,
+
+	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
+};
+
+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
+ *  of the device in one of its supported configurations, including information about any device interfaces
+ *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
+ *  a configuration so that the host may correctly communicate with the USB device.
+ */
+const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
+{
+	.Config =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
+
+			.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
+			.TotalInterfaces        = 1,
+
+			.ConfigurationNumber    = 1,
+			.ConfigurationStrIndex  = NO_DESCRIPTOR,
+
+			.ConfigAttributes       = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
+
+			.MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)
+		},
+
+	.HID_Interface =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+			.InterfaceNumber        = INTERFACE_ID_Keyboard,
+			.AlternateSetting       = 0x00,
+
+			.TotalEndpoints         = 2,
+
+			.Class                  = HID_CSCP_HIDClass,
+			.SubClass               = HID_CSCP_BootSubclass,
+			.Protocol               = HID_CSCP_KeyboardBootProtocol,
+
+			.InterfaceStrIndex      = NO_DESCRIPTOR
+		},
+
+	.HID_KeyboardHID =
+		{
+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
+
+			.HIDSpec                = VERSION_BCD(1,1,1),
+			.CountryCode            = 0x00,
+			.TotalReportDescriptors = 1,
+			.HIDReportType          = HID_DTYPE_Report,
+			.HIDReportLength        = sizeof(KeyboardReport)
+		},
+
+	.HID_ReportINEndpoint =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+			.EndpointAddress        = KEYBOARD_IN_EPADDR,
+			.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = KEYBOARD_EPSIZE,
+			.PollingIntervalMS      = 0x05
+		},
+
+	.HID_ReportOUTEndpoint =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+			.EndpointAddress        = KEYBOARD_OUT_EPADDR,
+			.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = KEYBOARD_EPSIZE,
+			.PollingIntervalMS      = 0x05
+		}
+};
+
+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
+ *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
+ *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
+ */
+const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
+
+/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
+ *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ *  Descriptor.
+ */
+const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera");
+
+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
+ *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
+ *  Descriptor.
+ */
+const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA Keyboard Demo");
+
+/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
+ *  documentation) by the application code so that the address and size of a requested descriptor can be given
+ *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
+ *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
+ *  USB host.
+ */
+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+                                    const uint16_t wIndex,
+                                    const void** const DescriptorAddress)
+{
+	const uint8_t  DescriptorType   = (wValue >> 8);
+	const uint8_t  DescriptorNumber = (wValue & 0xFF);
+
+	const void* Address = NULL;
+	uint16_t    Size    = NO_DESCRIPTOR;
+
+	switch (DescriptorType)
+	{
+		case DTYPE_Device:
+			Address = &DeviceDescriptor;
+			Size    = sizeof(USB_Descriptor_Device_t);
+			break;
+		case DTYPE_Configuration:
+			Address = &ConfigurationDescriptor;
+			Size    = sizeof(USB_Descriptor_Configuration_t);
+			break;
+		case DTYPE_String:
+			switch (DescriptorNumber)
+			{
+				case STRING_ID_Language:
+					Address = &LanguageString;
+					Size    = pgm_read_byte(&LanguageString.Header.Size);
+					break;
+				case STRING_ID_Manufacturer:
+					Address = &ManufacturerString;
+					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
+					break;
+				case STRING_ID_Product:
+					Address = &ProductString;
+					Size    = pgm_read_byte(&ProductString.Header.Size);
+					break;
+			}
+
+			break;
+		case HID_DTYPE_HID:
+			Address = &ConfigurationDescriptor.HID_KeyboardHID;
+			Size    = sizeof(USB_HID_Descriptor_HID_t);
+			break;
+		case HID_DTYPE_Report:
+			Address = &KeyboardReport;
+			Size    = sizeof(KeyboardReport);
+			break;
+	}
+
+	*DescriptorAddress = Address;
+	return Size;
+}
+
diff --git a/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.h b/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.h
new file mode 100644
index 0000000000..f9d26e4823
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/Keyboard/Descriptors.h
@@ -0,0 +1,98 @@
+/*
+             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)
+  Copyright 2010  Denver Gingerich (denver [at] ossguy [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
+ *
+ *  Header file for Descriptors.c.
+ */
+
+#ifndef _DESCRIPTORS_H_
+#define _DESCRIPTORS_H_
+
+	/* Includes: */
+		#include <LUFA/Drivers/USB/USB.h>
+
+		#include <avr/pgmspace.h>
+
+	/* Type Defines: */
+		/** Type define for the device configuration descriptor structure. This must be defined in the
+		 *  application code, as the configuration descriptor contains several sub-descriptors which
+		 *  vary between devices, and which describe the device's usage to the host.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Configuration_Header_t Config;
+
+			// Keyboard HID Interface
+			USB_Descriptor_Interface_t            HID_Interface;
+			USB_HID_Descriptor_HID_t              HID_KeyboardHID;
+			USB_Descriptor_Endpoint_t             HID_ReportINEndpoint;
+			USB_Descriptor_Endpoint_t             HID_ReportOUTEndpoint;
+		} USB_Descriptor_Configuration_t;
+
+		/** Enum for the device interface descriptor IDs within the device. Each interface descriptor
+		 *  should have a unique ID index associated with it, which can be used to refer to the
+		 *  interface from other descriptors.
+		 */
+		enum InterfaceDescriptors_t
+		{
+			INTERFACE_ID_Keyboard = 0, /**< Keyboard interface descriptor ID */
+		};
+
+		/** Enum for the device string descriptor IDs within the device. Each string descriptor should
+		 *  have a unique ID index associated with it, which can be used to refer to the string from
+		 *  other descriptors.
+		 */
+		enum StringDescriptors_t
+		{
+			STRING_ID_Language     = 0, /**< Supported Languages string descriptor ID (must be zero) */
+			STRING_ID_Manufacturer = 1, /**< Manufacturer string ID */
+			STRING_ID_Product      = 2, /**< Product string ID */
+		};
+
+	/* Macros: */
+		/** Endpoint address of the Keyboard HID reporting IN endpoint. */
+		#define KEYBOARD_IN_EPADDR        (ENDPOINT_DIR_IN  | 1)
+
+		/** Endpoint address of the Keyboard HID reporting OUT endpoint. */
+		#define KEYBOARD_OUT_EPADDR       (ENDPOINT_DIR_OUT | 2)
+
+		/** Size in bytes of the Keyboard HID reporting IN and OUT endpoints. */
+		#define KEYBOARD_EPSIZE           8
+
+	/* Function Prototypes: */
+		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
+		                                    const uint16_t wIndex,
+		                                    const void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+
+#endif
+
diff --git a/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.c b/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.c
new file mode 100644
index 0000000000..c412991e8b
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.c
@@ -0,0 +1,383 @@
+/*
+             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)
+  Copyright 2010  Denver Gingerich (denver [at] ossguy [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
+ *
+ *  Main source file for the Keyboard demo. This file contains the main tasks of the demo and
+ *  is responsible for the initial application hardware configuration.
+ */
+
+#include "Keyboard.h"
+
+/** Indicates what report mode the host has requested, true for normal HID reporting mode, \c false for special boot
+ *  protocol reporting mode.
+ */
+static bool UsingReportProtocol = true;
+
+/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports
+ *  for either the entire idle duration, or until the report status changes (e.g. the user presses a key).
+ */
+static uint16_t IdleCount = 500;
+
+/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
+ *  milliseconds. This is separate to the IdleCount timer and is incremented and compared as the host may request
+ *  the current idle period via a Get Idle HID class request, thus its value must be preserved.
+ */
+static uint16_t IdleMSRemaining = 0;
+
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ *  enters a loop to run the application tasks in sequence.
+ */
+int main(void)
+{
+	SetupHardware();
+
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	GlobalInterruptEnable();
+
+	for (;;)
+	{
+		HID_Task();
+		USB_USBTask();
+	}
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Disable clock division */
+	clock_prescale_set(clock_div_1);
+#elif (ARCH == ARCH_XMEGA)
+	/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz 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 48MHz 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);
+
+	PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
+#endif
+
+	/* Hardware Initialization */
+	Joystick_Init();
+	LEDs_Init();
+	USB_Init();
+	Buttons_Init();
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
+ *  starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Device_Connect(void)
+{
+	/* Indicate USB enumerating */
+	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+
+	/* Default to report protocol on connect */
+	UsingReportProtocol = true;
+}
+
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ *  the status LEDs.
+ */
+void EVENT_USB_Device_Disconnect(void)
+{
+	/* Indicate USB not ready */
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration
+ *  of the USB device after enumeration, and configures the keyboard device endpoints.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	bool ConfigSuccess = true;
+
+	/* Setup HID Report Endpoints */
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(KEYBOARD_IN_EPADDR, EP_TYPE_INTERRUPT, KEYBOARD_EPSIZE, 1);
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(KEYBOARD_OUT_EPADDR, EP_TYPE_INTERRUPT, KEYBOARD_EPSIZE, 1);
+
+	/* Turn on Start-of-Frame events for tracking HID report period expiry */
+	USB_Device_EnableSOFEvents();
+
+	/* Indicate endpoint configuration success or failure */
+	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ *  the device from the USB host before passing along unhandled control requests to the library for processing
+ *  internally.
+ */
+void EVENT_USB_Device_ControlRequest(void)
+{
+	/* Handle HID Class specific requests */
+	switch (USB_ControlRequest.bRequest)
+	{
+		case HID_REQ_GetReport:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				USB_KeyboardReport_Data_t KeyboardReportData;
+
+				/* Create the next keyboard report for transmission to the host */
+				CreateKeyboardReport(&KeyboardReportData);
+
+				Endpoint_ClearSETUP();
+
+				/* Write the report data to the control endpoint */
+				Endpoint_Write_Control_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
+				Endpoint_ClearOUT();
+			}
+
+			break;
+		case HID_REQ_SetReport:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+
+				/* Wait until the LED report has been sent by the host */
+				while (!(Endpoint_IsOUTReceived()))
+				{
+					if (USB_DeviceState == DEVICE_STATE_Unattached)
+					  return;
+				}
+
+				/* Read in the LED report from the host */
+				uint8_t LEDStatus = Endpoint_Read_8();
+
+				Endpoint_ClearOUT();
+				Endpoint_ClearStatusStage();
+
+				/* Process the incoming LED report */
+				ProcessLEDReport(LEDStatus);
+			}
+
+			break;
+		case HID_REQ_GetProtocol:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+
+				/* Write the current protocol flag to the host */
+				Endpoint_Write_8(UsingReportProtocol);
+
+				Endpoint_ClearIN();
+				Endpoint_ClearStatusStage();
+			}
+
+			break;
+		case HID_REQ_SetProtocol:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+				Endpoint_ClearStatusStage();
+
+				/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
+				UsingReportProtocol = (USB_ControlRequest.wValue != 0);
+			}
+
+			break;
+		case HID_REQ_SetIdle:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+				Endpoint_ClearStatusStage();
+
+				/* Get idle period in MSB, IdleCount must be multiplied by 4 to get number of milliseconds */
+				IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
+			}
+
+			break;
+		case HID_REQ_GetIdle:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				Endpoint_ClearSETUP();
+
+				/* Write the current idle duration to the host, must be divided by 4 before sent to host */
+				Endpoint_Write_8(IdleCount >> 2);
+
+				Endpoint_ClearIN();
+				Endpoint_ClearStatusStage();
+			}
+
+			break;
+	}
+}
+
+/** Event handler for the USB device Start Of Frame event. */
+void EVENT_USB_Device_StartOfFrame(void)
+{
+	/* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */
+	if (IdleMSRemaining)
+	  IdleMSRemaining--;
+}
+
+/** Fills the given HID report data structure with the next HID report to send to the host.
+ *
+ *  \param[out] ReportData  Pointer to a HID report data structure to be filled
+ */
+void CreateKeyboardReport(USB_KeyboardReport_Data_t* const ReportData)
+{
+	uint8_t JoyStatus_LCL     = Joystick_GetStatus();
+	uint8_t ButtonStatus_LCL  = Buttons_GetStatus();
+
+	uint8_t UsedKeyCodes      = 0;
+
+	/* Clear the report contents */
+	memset(ReportData, 0, sizeof(USB_KeyboardReport_Data_t));
+
+	/* Make sent key uppercase by indicating that the left shift key is pressed */
+	ReportData->Modifier = HID_KEYBOARD_MODIFIER_LEFTSHIFT;
+
+	if (JoyStatus_LCL & JOY_UP)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_A;
+	else if (JoyStatus_LCL & JOY_DOWN)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_B;
+
+	if (JoyStatus_LCL & JOY_LEFT)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_C;
+	else if (JoyStatus_LCL & JOY_RIGHT)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_D;
+
+	if (JoyStatus_LCL & JOY_PRESS)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_E;
+
+	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
+	  ReportData->KeyCode[UsedKeyCodes++] = HID_KEYBOARD_SC_F;
+}
+
+/** Processes a received LED report, and updates the board LEDs states to match.
+ *
+ *  \param[in] LEDReport  LED status report from the host
+ */
+void ProcessLEDReport(const uint8_t LEDReport)
+{
+	uint8_t LEDMask = LEDS_LED2;
+
+	if (LEDReport & HID_KEYBOARD_LED_NUMLOCK)
+	  LEDMask |= LEDS_LED1;
+
+	if (LEDReport & HID_KEYBOARD_LED_CAPSLOCK)
+	  LEDMask |= LEDS_LED3;
+
+	if (LEDReport & HID_KEYBOARD_LED_SCROLLLOCK)
+	  LEDMask |= LEDS_LED4;
+
+	/* Set the status LEDs to the current Keyboard LED status */
+	LEDs_SetAllLEDs(LEDMask);
+}
+
+/** Sends the next HID report to the host, via the keyboard data endpoint. */
+void SendNextReport(void)
+{
+	static USB_KeyboardReport_Data_t PrevKeyboardReportData;
+	USB_KeyboardReport_Data_t        KeyboardReportData;
+	bool                             SendReport = false;
+
+	/* Create the next keyboard report for transmission to the host */
+	CreateKeyboardReport(&KeyboardReportData);
+
+	/* Check if the idle period is set and has elapsed */
+	if (IdleCount && (!(IdleMSRemaining)))
+	{
+		/* Reset the idle time remaining counter */
+		IdleMSRemaining = IdleCount;
+
+		/* Idle period is set and has elapsed, must send a report to the host */
+		SendReport = true;
+	}
+	else
+	{
+		/* Check to see if the report data has changed - if so a report MUST be sent */
+		SendReport = (memcmp(&PrevKeyboardReportData, &KeyboardReportData, sizeof(USB_KeyboardReport_Data_t)) != 0);
+	}
+
+	/* Select the Keyboard Report Endpoint */
+	Endpoint_SelectEndpoint(KEYBOARD_IN_EPADDR);
+
+	/* Check if Keyboard Endpoint Ready for Read/Write and if we should send a new report */
+	if (Endpoint_IsReadWriteAllowed() && SendReport)
+	{
+		/* Save the current report data for later comparison to check for changes */
+		PrevKeyboardReportData = KeyboardReportData;
+
+		/* Write Keyboard Report Data */
+		Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData), NULL);
+
+		/* Finalize the stream transfer to send the last packet */
+		Endpoint_ClearIN();
+	}
+}
+
+/** Reads the next LED status report from the host from the LED data endpoint, if one has been sent. */
+void ReceiveNextReport(void)
+{
+	/* Select the Keyboard LED Report Endpoint */
+	Endpoint_SelectEndpoint(KEYBOARD_OUT_EPADDR);
+
+	/* Check if Keyboard LED Endpoint contains a packet */
+	if (Endpoint_IsOUTReceived())
+	{
+		/* Check to see if the packet contains data */
+		if (Endpoint_IsReadWriteAllowed())
+		{
+			/* Read in the LED report from the host */
+			uint8_t LEDReport = Endpoint_Read_8();
+
+			/* Process the read LED report from the host */
+			ProcessLEDReport(LEDReport);
+		}
+
+		/* Handshake the OUT Endpoint - clear endpoint and ready for next report */
+		Endpoint_ClearOUT();
+	}
+}
+
+/** Function to manage HID report generation and transmission to the host, when in report mode. */
+void HID_Task(void)
+{
+	/* Device must be connected and configured for the task to run */
+	if (USB_DeviceState != DEVICE_STATE_Configured)
+	  return;
+
+	/* Send the next keypress report to the host */
+	SendNextReport();
+
+	/* Process the LED report sent from the host */
+	ReceiveNextReport();
+}
+
diff --git a/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.h b/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.h
new file mode 100644
index 0000000000..5c6bad371c
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/Keyboard/Keyboard.h
@@ -0,0 +1,85 @@
+/*
+             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)
+  Copyright 2010  Denver Gingerich (denver [at] ossguy [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
+  per