Squashed 'lib/lufa/' content from commit 385d40300

git-subtree-dir: lib/lufa
git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b

9 files changed, 3233 insertions, 0 deletions

diff --git a/Demos/Host/LowLevel/MIDIHost/Config/LUFAConfig.h b/Demos/Host/LowLevel/MIDIHost/Config/LUFAConfig.h
new file mode 100644
index 0000000000..197122fce1
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/Config/LUFAConfig.h
@@ -0,0 +1,93 @@
+/*
+             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_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      {Insert Value Here}
+//		#define DEVICE_STATE_AS_GPIOR            {Insert Value Here}
+//		#define FIXED_NUM_CONFIGURATIONS         {Insert Value Here}
+//		#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
+
+	#else
+
+		#error Unsupported architecture for this LUFA configuration file.
+
+	#endif
+#endif
diff --git a/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.c b/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.c
new file mode 100644
index 0000000000..c02ec555c1
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.c
@@ -0,0 +1,173 @@
+/*
+             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
+ *
+ *  USB Device Configuration Descriptor processing routines, to determine the correct pipe configurations
+ *  needed to communication with an attached USB device. Descriptors are special  computer-readable structures
+ *  which the host requests upon device enumeration, to determine the device's capabilities and functions.
+ */
+
+#include "ConfigDescriptor.h"
+
+/** Reads and processes an attached device's descriptors, to determine compatibility and pipe configurations. This
+ *  routine will read in the entire configuration descriptor, and configure the hosts pipes to correctly communicate
+ *  with compatible devices.
+ *
+ *  This routine searches for a MIDI interface descriptor pair containing bulk data IN and OUT endpoints.
+ *
+ *  \return An error code from the \ref MIDIHost_GetConfigDescriptorDataCodes_t enum.
+ */
+uint8_t ProcessConfigurationDescriptor(void)
+{
+	uint8_t  ConfigDescriptorData[512];
+	void*    CurrConfigLocation = ConfigDescriptorData;
+	uint16_t CurrConfigBytesRem;
+
+	USB_Descriptor_Interface_t* MIDIInterface   = NULL;
+	USB_Descriptor_Endpoint_t*  DataINEndpoint  = NULL;
+	USB_Descriptor_Endpoint_t*  DataOUTEndpoint = NULL;
+
+	/* Retrieve the entire configuration descriptor into the allocated buffer */
+	switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))
+	{
+		case HOST_GETCONFIG_Successful:
+			break;
+		case HOST_GETCONFIG_InvalidData:
+			return InvalidConfigDataReturned;
+		case HOST_GETCONFIG_BuffOverflow:
+			return DescriptorTooLarge;
+		default:
+			return ControlError;
+	}
+
+	while (!(DataINEndpoint) || !(DataOUTEndpoint))
+	{
+		/* See if we've found a likely compatible interface, and if there is an endpoint within that interface */
+		if (!(MIDIInterface) ||
+		    USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+		                              DComp_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+		{
+			/* Get the next Mass Storage interface from the configuration descriptor */
+			if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,
+										  DComp_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+			{
+				/* Descriptor not found, error out */
+				return NoCompatibleInterfaceFound;
+			}
+
+			/* Save the interface in case we need to refer back to it later */
+			MIDIInterface = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Interface_t);
+
+			/* Clear any found endpoints */
+			DataINEndpoint  = NULL;
+			DataOUTEndpoint = NULL;
+
+			/* Skip the remainder of the loop as we have not found an endpoint yet */
+			continue;
+		}
+
+		/* Retrieve the endpoint address from the endpoint descriptor */
+		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);
+
+		/* If the endpoint is a IN type endpoint */
+		if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
+		  DataINEndpoint  = EndpointData;
+		else
+		  DataOUTEndpoint = EndpointData;
+	}
+
+	/* Configure the MIDI data IN pipe */
+	Pipe_ConfigurePipe(MIDI_DATA_IN_PIPE, EP_TYPE_BULK, DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize, 1);
+
+	/* Configure the MIDI data OUT pipe */
+	Pipe_ConfigurePipe(MIDI_DATA_OUT_PIPE, EP_TYPE_BULK, DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize, 1);
+
+	/* Valid data found, return success */
+	return SuccessfulConfigRead;
+}
+
+/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
+ *  configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration
+ *  descriptor processing if an incompatible descriptor configuration is found.
+ *
+ *  This comparator searches for the next Interface descriptor of the correct MIDI Streaming Class, Subclass and Protocol values.
+ *
+ *  \return A value from the DSEARCH_Return_ErrorCodes_t enum
+ */
+uint8_t DComp_NextMIDIStreamingInterface(void* CurrentDescriptor)
+{
+	USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+	if (Header->Type == DTYPE_Interface)
+	{
+		USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
+		/* Check the MIDI descriptor class, subclass and protocol, break out if correct data interface found */
+		if ((Interface->Class    == AUDIO_CSCP_AudioClass)            &&
+		    (Interface->SubClass == AUDIO_CSCP_MIDIStreamingSubclass) &&
+		    (Interface->Protocol == AUDIO_CSCP_StreamingProtocol))
+		{
+			return DESCRIPTOR_SEARCH_Found;
+		}
+	}
+
+	return DESCRIPTOR_SEARCH_NotFound;
+}
+
+/** Descriptor comparator function. This comparator function is can be called while processing an attached USB device's
+ *  configuration descriptor, to search for a specific sub descriptor. It can also be used to abort the configuration
+ *  descriptor processing if an incompatible descriptor configuration is found.
+ *
+ *  This comparator searches for the next bulk IN or OUT endpoint within the current interface, aborting the search if
+ *  another interface descriptor is found before the required endpoint.
+ *
+ *  \return A value from the DSEARCH_Return_ErrorCodes_t enum
+ */
+uint8_t DComp_NextMIDIStreamingDataEndpoint(void* CurrentDescriptor)
+{
+	USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+	if (Header->Type == DTYPE_Endpoint)
+	{
+		USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
+
+		/* Check the endpoint type, break out if correct BULK type endpoint found */
+		if ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_BULK)
+		  return DESCRIPTOR_SEARCH_Found;
+	}
+	else if (Header->Type == DTYPE_Interface)
+	{
+		return DESCRIPTOR_SEARCH_Fail;
+	}
+
+	return DESCRIPTOR_SEARCH_NotFound;
+}
+
diff --git a/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.h b/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.h
new file mode 100644
index 0000000000..7cceba0597
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/ConfigDescriptor.h
@@ -0,0 +1,69 @@
+/*
+             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
+ *
+ *  Header file for ConfigDescriptor.c.
+ */
+
+#ifndef _CONFIGDESCRIPTOR_H_
+#define _CONFIGDESCRIPTOR_H_
+
+	/* Includes: */
+		#include <LUFA/Drivers/USB/USB.h>
+
+		#include "MIDIHost.h"
+
+	/* Macros: */
+		/** Pipe address for the MIDI data IN pipe. */
+		#define MIDI_DATA_IN_PIPE              (PIPE_DIR_IN  | 1)
+
+		/** Pipe address for the MIDI data OUT pipe. */
+		#define MIDI_DATA_OUT_PIPE             (PIPE_DIR_OUT | 2)
+
+	/* Enums: */
+		/** Enum for the possible return codes of the \ref ProcessConfigurationDescriptor() function. */
+		enum MIDIHost_GetConfigDescriptorDataCodes_t
+		{
+			SuccessfulConfigRead            = 0, /**< Configuration Descriptor was processed successfully */
+			ControlError                    = 1, /**< A control request to the device failed to complete successfully */
+			DescriptorTooLarge              = 2, /**< The device's Configuration Descriptor is too large to process */
+			InvalidConfigDataReturned       = 3, /**< The device returned an invalid Configuration Descriptor */
+			NoCompatibleInterfaceFound      = 4, /**< A compatible interface with the required endpoints was not found */
+		};
+
+	/* Function Prototypes: */
+		uint8_t ProcessConfigurationDescriptor(void);
+
+		uint8_t DComp_NextMIDIStreamingInterface(void* CurrentDescriptor);
+		uint8_t DComp_NextMIDIStreamingDataEndpoint(void* CurrentDescriptor);
+
+#endif
+
diff --git a/Demos/Host/LowLevel/MIDIHost/MIDIHost.c b/Demos/Host/LowLevel/MIDIHost/MIDIHost.c
new file mode 100644
index 0000000000..95043d724e
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/MIDIHost.c
@@ -0,0 +1,266 @@
+/*
+             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
+ *
+ *  Main source file for the MIDIHost demo. This file contains the main tasks of
+ *  the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "MIDIHost.h"
+
+/** 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();
+
+	puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
+
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	GlobalInterruptEnable();
+
+	for (;;)
+	{
+		MIDIHost_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);
+#endif
+
+	/* Hardware Initialization */
+	Serial_Init(9600, false);
+	LEDs_Init();
+	Buttons_Init();
+	Joystick_Init();
+	USB_Init();
+
+	/* Create a stdio stream for the serial port for stdin and stdout */
+	Serial_CreateStream(NULL);
+}
+
+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
+ *  starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Host_DeviceAttached(void)
+{
+	puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
+	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
+ *  stops the library USB task management process.
+ */
+void EVENT_USB_Host_DeviceUnattached(void)
+{
+	puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
+ *  enumerated by the host and is now ready to be used by the application.
+ */
+void EVENT_USB_Host_DeviceEnumerationComplete(void)
+{
+	puts_P(PSTR("Getting Config Data.\r\n"));
+
+	uint8_t ErrorCode;
+
+	/* Get and process the configuration descriptor data */
+	if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
+	{
+		if (ErrorCode == ControlError)
+		  puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
+		else
+		  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
+
+		printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+		return;
+	}
+
+	/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
+	if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
+	{
+		printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
+		                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+		return;
+	}
+
+	puts_P(PSTR("MIDI Device Enumerated.\r\n"));
+	LEDs_SetAllLEDs(LEDMASK_USB_READY);
+}
+
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
+void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
+{
+	USB_Disable();
+
+	printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
+	                         " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+	for(;;);
+}
+
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
+ *  enumerating an attached USB device.
+ */
+void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
+                                            const uint8_t SubErrorCode)
+{
+	printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
+	                         " -- Error Code %d\r\n"
+	                         " -- Sub Error Code %d\r\n"
+	                         " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
+
+	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Task to read in note on/off messages from the attached MIDI device and print it to the serial port.
+ *  When the board joystick or buttons are pressed, note on/off messages are sent to the attached device.
+ */
+void MIDIHost_Task(void)
+{
+	if (USB_HostState != HOST_STATE_Configured)
+	  return;
+
+	Pipe_SelectPipe(MIDI_DATA_IN_PIPE);
+	Pipe_Unfreeze();
+
+	if (Pipe_IsINReceived())
+	{
+		MIDI_EventPacket_t MIDIEvent;
+
+		Pipe_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL);
+
+		if (!(Pipe_BytesInPipe()))
+		  Pipe_ClearIN();
+
+		bool NoteOnEvent  = (MIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_ON));
+		bool NoteOffEvent = (MIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_OFF));
+
+		if (NoteOnEvent || NoteOffEvent)
+		{
+			printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
+																				   ((MIDIEvent.Data1 & 0x0F) + 1),
+																				   MIDIEvent.Data2, MIDIEvent.Data3);
+		}
+	}
+
+	Pipe_Freeze();
+
+	Pipe_SelectPipe(MIDI_DATA_OUT_PIPE);
+	Pipe_Unfreeze();
+
+	if (Pipe_IsOUTReady())
+	{
+		uint8_t MIDICommand = 0;
+		uint8_t MIDIPitch;
+
+		static uint8_t PrevJoystickStatus;
+		uint8_t JoystickStatus  = Joystick_GetStatus();
+		uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
+
+		/* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
+		uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
+
+		if (JoystickChanges & JOY_LEFT)
+		{
+			MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+			MIDIPitch   = 0x3C;
+		}
+
+		if (JoystickChanges & JOY_UP)
+		{
+			MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+			MIDIPitch   = 0x3D;
+		}
+
+		if (JoystickChanges & JOY_RIGHT)
+		{
+			MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+			MIDIPitch   = 0x3E;
+		}
+
+		if (JoystickChanges & JOY_DOWN)
+		{
+			MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+			MIDIPitch   = 0x3F;
+		}
+
+		if (JoystickChanges & JOY_PRESS)
+		{
+			MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+			MIDIPitch   = 0x3B;
+		}
+
+		/* Check if a MIDI command is to be sent */
+		if (MIDICommand)
+		{
+			MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
+				{
+					.Event       = MIDI_EVENT(0, MIDICommand),
+
+					.Data1       = MIDICommand | Channel,
+					.Data2       = MIDIPitch,
+					.Data3       = MIDI_STANDARD_VELOCITY,
+				};
+
+			/* Write the MIDI event packet to the pipe */
+			Pipe_Write_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL);
+
+			/* Send the data in the pipe to the device */
+			Pipe_ClearOUT();
+		}
+
+		Pipe_Freeze();
+
+		/* Save previous joystick value for next joystick change detection */
+		PrevJoystickStatus = JoystickStatus;
+	}
+}
+
diff --git a/Demos/Host/LowLevel/MIDIHost/MIDIHost.h b/Demos/Host/LowLevel/MIDIHost/MIDIHost.h
new file mode 100644
index 0000000000..eceea09778
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/MIDIHost.h
@@ -0,0 +1,82 @@
+/*
+             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
+ *
+ *  Header file for MIDIHost.c.
+ */
+
+#ifndef _MIDI_HOST_H_
+#define _MIDI_HOST_H_
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <avr/wdt.h>
+		#include <avr/pgmspace.h>
+		#include <avr/power.h>
+		#include <avr/interrupt.h>
+		#include <stdio.h>
+
+		#include <LUFA/Drivers/Misc/TerminalCodes.h>
+		#include <LUFA/Drivers/USB/USB.h>
+		#include <LUFA/Drivers/Peripheral/Serial.h>
+		#include <LUFA/Drivers/Board/LEDs.h>
+		#include <LUFA/Drivers/Board/Buttons.h>
+		#include <LUFA/Drivers/Board/Joystick.h>
+		#include <LUFA/Platform/Platform.h>
+
+		#include "ConfigDescriptor.h"
+
+	/* Macros: */
+		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
+		#define LEDMASK_USB_NOTREADY      LEDS_LED1
+
+		/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
+		#define LEDMASK_USB_ENUMERATING  (LEDS_LED2 | LEDS_LED3)
+
+		/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
+		#define LEDMASK_USB_READY        (LEDS_LED2 | LEDS_LED4)
+
+		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
+		#define LEDMASK_USB_ERROR        (LEDS_LED1 | LEDS_LED3)
+
+	/* Function Prototypes: */
+		void SetupHardware(void);
+		void MIDIHost_Task(void);
+
+		void EVENT_USB_Host_HostError(const uint8_t ErrorCode);
+		void EVENT_USB_Host_DeviceAttached(void);
+		void EVENT_USB_Host_DeviceUnattached(void);
+		void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
+		                                            const uint8_t SubErrorCode);
+		void EVENT_USB_Host_DeviceEnumerationComplete(void);
+
+#endif
+
diff --git a/Demos/Host/LowLevel/MIDIHost/MIDIHost.txt b/Demos/Host/LowLevel/MIDIHost/MIDIHost.txt
new file mode 100644
index 0000000000..33a8319f06
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/MIDIHost.txt
@@ -0,0 +1,60 @@
+/** \file
+ *
+ *  This file contains special DoxyGen information for the generation of the main page and other special
+ *  documentation pages. It is not a project source file.
+ */
+
+/** \mainpage MIDI Host Demo
+ *
+ *  \section Sec_Compat Demo Compatibility:
+ *
+ *  The following list indicates what microcontrollers are compatible with this demo.
+ *
+ *  \li Series 7 USB AVRs (AT90USBxxx7)
+ *
+ *  \section Sec_Info USB Information:
+ *
+ *  The following table gives a rundown of the USB utilization of this demo.
+ *
+ *  <table>
+ *   <tr>
+ *    <td><b>USB Mode:</b></td>
+ *    <td>Host</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>USB Class:</b></td>
+ *    <td>Audio Class Device</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>USB Subclass:</b></td>
+ *    <td>MIDI Subclass</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>Relevant Standards:</b></td>
+ *    <td>USBIF USB MIDI Audio Class Standard</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>Supported USB Speeds:</b></td>
+ *    <td>Full Speed Mode</td>
+ *   </tr>
+ *  </table>
+ *
+ *  \section Sec_Description Project Description:
+ *
+ *  MIDI host demonstration application. This demo will enumerate an attached USB-MIDI device, and print incoming MIDI note
+ *  on and off messages on any channel to the serial port. Pressing the board joystick will send note on and off messages to
+ *  the attached MIDI device, with the board HWB controlling the note channel.
+ *
+ *  \section Sec_Options Project Options
+ *
+ *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
+ *
+ *  <table>
+ *   <tr>
+ *    <td>
+ *     None
+ *    </td>
+ *   </tr>
+ *  </table>
+ */
+
diff --git a/Demos/Host/LowLevel/MIDIHost/asf.xml b/Demos/Host/LowLevel/MIDIHost/asf.xml
new file mode 100644
index 0000000000..0a19a117df
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/asf.xml
@@ -0,0 +1,52 @@
+<asf xmlversion="1.0">

+	<project caption="MIDI Host Demo (Low Level APIs)" id="lufa.demos.host.lowlevel.midi.example.avr8">

+		<require idref="lufa.demos.host.lowlevel.midi"/>

+		<require idref="lufa.boards.dummy.avr8"/>

+		<generator value="as5_8"/>

+

+		<device-support value="at90usb1287"/>

+		<config name="lufa.drivers.board.name" value="none"/>

+

+		<build type="define" name="F_CPU" value="16000000UL"/>

+		<build type="define" name="F_USB" value="16000000UL"/>

+	</project>

+

+	<module type="application" id="lufa.demos.host.lowlevel.midi" caption="MIDI Host Demo (Low Level APIs)">

+		<info type="description" value="summary">

+		MIDI Host demo, capable of sending and receiving MIDI messages to and from an attached device. This demo uses the Low Level LUFA APIs to manually implement a USB Class for demonstration purposes without using the simpler in-built LUFA Class Driver APIs.

+		</info>

+

+ 		<info type="gui-flag" value="move-to-root"/>

+

+		<info type="keyword" value="Technology">

+			<keyword value="Low Level APIs"/>

+			<keyword value="USB Host"/>

+			<keyword value="MIDI Class"/>

+		</info>

+

+		<device-support-alias value="lufa_avr8"/>

+		<device-support-alias value="lufa_xmega"/>

+		<device-support-alias value="lufa_uc3"/>

+

+		<build type="distribute" subtype="user-file" value="doxyfile"/>

+		<build type="distribute" subtype="user-file" value="MIDIHost.txt"/>

+

+		<build type="c-source" value="MIDIHost.c"/>

+		<build type="c-source" value="ConfigDescriptor.c"/>

+		<build type="header-file" value="MIDIHost.h"/>

+		<build type="header-file" value="ConfigDescriptor.h"/>

+

+		<build type="module-config" subtype="path" value="Config"/>

+		<build type="header-file" value="Config/LUFAConfig.h"/>

+

+		<require idref="lufa.common"/>

+		<require idref="lufa.platform"/>

+		<require idref="lufa.drivers.usb"/>

+		<require idref="lufa.drivers.peripheral.usart"/>

+		<require idref="lufa.drivers.misc.ansi"/>

+		<require idref="lufa.drivers.board"/>

+		<require idref="lufa.drivers.board.leds"/>

+		<require idref="lufa.drivers.board.buttons"/>

+		<require idref="lufa.drivers.board.joystick"/>

+	</module>

+</asf>

diff --git a/Demos/Host/LowLevel/MIDIHost/doxyfile b/Demos/Host/LowLevel/MIDIHost/doxyfile
new file mode 100644
index 0000000000..7a6906a271
--- /dev/null
+++ b/Demos/Host/LowLevel/MIDIHost/doxyfile
@@ -0,0 +1,2395 @@
+# Doxyfile 1.8.9
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project.
+#
+# All text after a double hash (##) is considered a comment and is placed in
+# front of the TAG it is preceding.
+#
+# All text after a single hash (#) is considered a comment and will be ignored.
+# The format is:
+# TAG = value [value, ...]
+# For lists, items can also be appended using:
+# TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (\" \").
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all text
+# before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
+# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
+# for the list of possible encodings.
+# The default value is: UTF-8.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
+# double-quotes, unless you are using Doxywizard) that should identify the
+# project for which the documentation is generated. This name is used in the
+# title of most generated pages and in a few other places.
+# The default value is: My Project.
+
+PROJECT_NAME           = "LUFA Library - MIDI Host Demo"
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
+# could be handy for archiving the generated documentation or if some version
+# control system is used.
+
+PROJECT_NUMBER         =
+
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer a
+# quick idea about the purpose of the project. Keep the description short.
+
+PROJECT_BRIEF          =
+
+# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
+# in the documentation. The maximum height of the logo should not exceed 55
+# pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
+# the logo to the output directory.
+
+PROJECT_LOGO           =
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
+# into which the generated documentation will be written. If a relative path is
+# entered, it will be relative to the location where doxygen was started. If
+# left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = ./Documentation/
+
+# If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
+# directories (in 2 levels) under the output directory of each output format and
+# will distribute the generated files over these directories. Enabling this
+# option can be useful when feeding doxygen a huge amount of source files, where
+# putting all generated files in the same directory would otherwise causes
+# performance problems for the file system.
+# The default value is: NO.
+
+CREATE_SUBDIRS         = NO
+
+# If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
+# characters to appear in the names of generated files. If set to NO, non-ASCII
+# characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
+# U+3044.
+# The default value is: NO.
+
+ALLOW_UNICODE_NAMES    = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
+# Chinese-Traditional, Croati