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

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

15 files changed, 5179 insertions, 0 deletions

diff --git a/Bootloaders/HID/BootloaderHID.c b/Bootloaders/HID/BootloaderHID.c
new file mode 100644
index 0000000000..fa1dd5873e
--- /dev/null
+++ b/Bootloaders/HID/BootloaderHID.c
@@ -0,0 +1,198 @@
+/*
+             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 HID class bootloader. This file contains the complete bootloader logic.
+ */
+
+#include "BootloaderHID.h"
+
+/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run
+ *  via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application
+ *  started via a forced watchdog reset.
+ */
+static bool RunBootloader = true;
+
+/** Magic lock for forced application start. If the HWBE fuse is programmed and BOOTRST is unprogrammed, the bootloader
+ *  will start if the /HWB line of the AVR is held low and the system is reset. However, if the /HWB line is still held
+ *  low when the application attempts to start via a watchdog reset, the bootloader will re-start. If set to the value
+ *  \ref MAGIC_BOOT_KEY the special init function \ref Application_Jump_Check() will force the application to start.
+ */
+uint16_t MagicBootKey ATTR_NO_INIT;
+
+
+/** Special startup routine to check if the bootloader was started via a watchdog reset, and if the magic application
+ *  start key has been loaded into \ref MagicBootKey. If the bootloader started via the watchdog and the key is valid,
+ *  this will force the user application to start via a software jump.
+ */
+void Application_Jump_Check(void)
+{
+	/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
+	if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
+	{
+		/* Turn off the watchdog */
+		MCUSR &= ~(1 << WDRF);
+		wdt_disable();
+
+		/* Clear the boot key and jump to the user application */
+		MagicBootKey = 0;
+
+		// cppcheck-suppress constStatement
+		((void (*)(void))0x0000)();
+	}
+}
+
+/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously
+ *  runs the bootloader processing routine until instructed to soft-exit.
+ */
+int main(void)
+{
+	/* Setup hardware required for the bootloader */
+	SetupHardware();
+
+	/* Enable global interrupts so that the USB stack can function */
+	GlobalInterruptEnable();
+
+	while (RunBootloader)
+	  USB_USBTask();
+
+	/* Disconnect from the host - USB interface will be reset later along with the AVR */
+	USB_Detach();
+
+	/* Unlock the forced application start mode of the bootloader if it is restarted */
+	MagicBootKey = MAGIC_BOOT_KEY;
+
+	/* Enable the watchdog and force a timeout to reset the AVR */
+	wdt_enable(WDTO_250MS);
+
+	for (;;);
+}
+
+/** Configures all hardware required for the bootloader. */
+static void SetupHardware(void)
+{
+	/* Disable watchdog if enabled by bootloader/fuses */
+	MCUSR &= ~(1 << WDRF);
+	wdt_disable();
+
+	/* Disable clock division */
+	clock_prescale_set(clock_div_1);
+
+	/* Relocate the interrupt vector table to the bootloader section */
+	MCUCR = (1 << IVCE);
+	MCUCR = (1 << IVSEL);
+
+	/* Initialize USB subsystem */
+	USB_Init();
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready
+ *  to relay data to and from the attached USB host.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	/* Setup HID Report Endpoint */
+	Endpoint_ConfigureEndpoint(HID_IN_EPADDR, EP_TYPE_INTERRUPT, HID_IN_EPSIZE, 1);
+}
+
+/** 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)
+{
+	/* Ignore any requests that aren't directed to the HID interface */
+	if ((USB_ControlRequest.bmRequestType & (CONTROL_REQTYPE_TYPE | CONTROL_REQTYPE_RECIPIENT)) !=
+	    (REQTYPE_CLASS | REQREC_INTERFACE))
+	{
+		return;
+	}
+
+	/* Process HID specific control requests */
+	switch (USB_ControlRequest.bRequest)
+	{
+		case HID_REQ_SetReport:
+			Endpoint_ClearSETUP();
+
+			/* Wait until the command has been sent by the host */
+			while (!(Endpoint_IsOUTReceived()));
+
+			/* Read in the write destination address */
+			#if (FLASHEND > 0xFFFF)
+			uint32_t PageAddress = ((uint32_t)Endpoint_Read_16_LE() << 8);
+			#else
+			uint16_t PageAddress = Endpoint_Read_16_LE();
+			#endif
+
+			/* Check if the command is a program page command, or a start application command */
+			#if (FLASHEND > 0xFFFF)
+			if ((uint16_t)(PageAddress >> 8) == COMMAND_STARTAPPLICATION)
+			#else
+			if (PageAddress == COMMAND_STARTAPPLICATION)
+			#endif
+			{
+				RunBootloader = false;
+			}
+			else if (PageAddress < BOOT_START_ADDR)
+			{
+				/* Erase the given FLASH page, ready to be programmed */
+				boot_page_erase(PageAddress);
+				boot_spm_busy_wait();
+
+				/* Write each of the FLASH page's bytes in sequence */
+				for (uint8_t PageWord = 0; PageWord < (SPM_PAGESIZE / 2); PageWord++)
+				{
+					/* Check if endpoint is empty - if so clear it and wait until ready for next packet */
+					if (!(Endpoint_BytesInEndpoint()))
+					{
+						Endpoint_ClearOUT();
+						while (!(Endpoint_IsOUTReceived()));
+					}
+
+					/* Write the next data word to the FLASH page */
+					boot_page_fill(PageAddress + ((uint16_t)PageWord << 1), Endpoint_Read_16_LE());
+				}
+
+				/* Write the filled FLASH page to memory */
+				boot_page_write(PageAddress);
+				boot_spm_busy_wait();
+
+				/* Re-enable RWW section */
+				boot_rww_enable();
+			}
+
+			Endpoint_ClearOUT();
+
+			Endpoint_ClearStatusStage();
+			break;
+	}
+}
+
diff --git a/Bootloaders/HID/BootloaderHID.h b/Bootloaders/HID/BootloaderHID.h
new file mode 100644
index 0000000000..62ee07de30
--- /dev/null
+++ b/Bootloaders/HID/BootloaderHID.h
@@ -0,0 +1,71 @@
+/*
+             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 BootloaderHID.c.
+ */
+
+#ifndef _BOOTLOADERHID_H_
+#define _BOOTLOADERHID_H_
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <avr/wdt.h>
+		#include <avr/boot.h>
+		#include <avr/power.h>
+		#include <avr/interrupt.h>
+		#include <stdbool.h>
+
+		#include "Descriptors.h"
+
+		#include <LUFA/Drivers/USB/USB.h>
+		#include <LUFA/Platform/Platform.h>
+
+	/* Preprocessor Checks: */
+		#if !defined(__OPTIMIZE_SIZE__)
+			#error This bootloader requires that it be optimized for size, not speed, to fit into the target device. Change optimization settings and try again.
+		#endif
+
+	/* Macros: */
+		/** Bootloader special address to start the user application */
+		#define COMMAND_STARTAPPLICATION   0xFFFF
+
+		/** Magic bootloader key to unlock forced application start mode. */
+		#define MAGIC_BOOT_KEY             0xDC42
+
+	/* Function Prototypes: */
+		static void SetupHardware(void);
+
+		void Application_Jump_Check(void) ATTR_INIT_SECTION(3);
+
+		void EVENT_USB_Device_ConfigurationChanged(void);
+
+#endif
diff --git a/Bootloaders/HID/BootloaderHID.txt b/Bootloaders/HID/BootloaderHID.txt
new file mode 100644
index 0000000000..e340703c41
--- /dev/null
+++ b/Bootloaders/HID/BootloaderHID.txt
@@ -0,0 +1,105 @@
+/** \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 HID Class USB AVR Bootloader
+ *
+ *  \section SSec_Compat Demo Compatibility:
+ *
+ *  The following list indicates what microcontrollers are compatible with this demo.
+ *
+ *  \li Series 7 USB AVRs (AT90USBxxx7)
+ *  \li Series 6 USB AVRs (AT90USBxxx6)
+ *  \li Series 4 USB AVRs (ATMEGAxxU4)
+ *  \li Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2)
+ *
+ *  \section SSec_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>Device</td>
+ *  </tr>
+ *  <tr>
+ *   <td><b>USB Class:</b></td>
+ *   <td>Human Interface Device Class (HID)</td>
+ *  </tr>
+ *  <tr>
+ *   <td><b>USB Subclass:</b></td>
+ *   <td>N/A</td>
+ *  </tr>
+ *  <tr>
+ *   <td><b>Relevant Standards:</b></td>
+ *   <td>USBIF HID Class Standard \n
+ *       Teensy Programming Protocol Specification</td>
+ *  </tr>
+ *  <tr>
+ *   <td><b>Supported USB Speeds:</b></td>
+ *   <td>Low Speed Mode \n
+ *       Full Speed Mode</td>
+ *  </tr>
+ * </table>
+ *
+ *  \section SSec_Description Project Description:
+ *
+ *  This bootloader enumerates to the host as a HID Class device, allowing for device FLASH programming through
+ *  the supplied command line software, which is a modified version of Paul's TeensyHID Command Line loader code
+ *  from PJRC (used with permission). This bootloader is deliberately non-compatible with the proprietary PJRC
+ *  HalfKay bootloader GUI; only the command line interface software accompanying this bootloader will work with it.
+ *
+ *  Out of the box this bootloader builds for the AT90USB1287 with an 8KB bootloader section size, and will fit
+ *  into 2KB of bootloader space for the Series 2 USB AVRs (ATMEGAxxU2, AT90USBxx2) or 4KB of bootloader space for
+ *  all other models. If you wish to alter this size and/or change the AVR model, you will need to edit the MCU,
+ *  FLASH_SIZE_KB and BOOT_SECTION_SIZE_KB values in the accompanying makefile.
+ *
+ *  \warning <b>THIS BOOTLOADER IS NOT SECURE.</b> Malicious entities can recover written data, even if the device
+ *           lockbits are set.
+ *
+ *  \section Sec_Running Running the Bootloader
+ *
+ *  This bootloader is designed to be started via the \c HWB mechanism of the USB AVRs; ground the \c HWB pin (see device
+ *  datasheet) then momentarily ground \c /RESET to start the bootloader. This assumes the \c HWBE fuse is set and the
+ *  \c BOOTRST fuse is cleared.
+ *
+ *  \section Sec_Installation Driver Installation
+ *
+ *  This bootloader uses the HID class driver inbuilt into all modern operating systems, thus no additional drivers
+ *  need to be supplied for correct operation.
+ *
+ *  \section Sec_HostApp Host Controller Application
+ *
+ *  Due to licensing issues, the supplied bootloader is compatible with the HalfKay bootloader protocol designed
+ *  by PJRC, but is <b>not compatible with the cross-platform loader GUI</b>. A modified version of the open source
+ *  cross-platform TeensyLoader application is supplied, which can be compiled under most operating systems. The
+ *  command-line loader application should remain compatible with genuine Teensy boards in addition to boards using
+ *  this custom bootloader.
+ *
+ *  Once compiled, programs can be loaded into the AVR's FLASH memory through the following example command:
+ *  \code
+ *  hid_bootloader_cli -mmcu=at90usb1287 Mouse.hex
+ *  \endcode
+ *
+ *  \section Sec_KnownIssues Known Issues:
+ *
+ *  \par After loading an application, it is not run automatically on startup.
+ *  Some USB AVR boards ship with the \c BOOTRST fuse set, causing the bootloader
+ *  to run automatically when the device is reset. This booloader requires the
+ *  \c BOOTRST be disabled and the HWBE fuse used instead to run the bootloader
+ *  when needed.
+ *
+ *  \section SSec_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/Bootloaders/HID/Config/LUFAConfig.h b/Bootloaders/HID/Config/LUFAConfig.h
new file mode 100644
index 0000000000..5aa0e765bf
--- /dev/null
+++ b/Bootloaders/HID/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_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            0
+		#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
+
+	#else
+
+		#error Unsupported architecture for this LUFA configuration file.
+
+	#endif
+#endif
diff --git a/Bootloaders/HID/Descriptors.c b/Bootloaders/HID/Descriptors.c
new file mode 100644
index 0000000000..854ae1b636
--- /dev/null
+++ b/Bootloaders/HID/Descriptors.c
@@ -0,0 +1,187 @@
+/*
+             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 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 HIDReport[] =
+{
+	HID_RI_USAGE_PAGE(16, 0xFFDC), /* Vendor Page 0xDC */
+	HID_RI_USAGE(8, 0xFB), /* Vendor Usage 0xFB */
+	HID_RI_COLLECTION(8, 0x01), /* Vendor Usage 1 */
+		HID_RI_USAGE(8, 0x02), /* Vendor Usage 2 */
+		HID_RI_LOGICAL_MINIMUM(8, 0x00),
+		HID_RI_LOGICAL_MAXIMUM(8, 0xFF),
+		HID_RI_REPORT_SIZE(8, 0x08),
+		HID_RI_REPORT_COUNT(16, (sizeof(uint16_t) + SPM_PAGESIZE)),
+		HID_RI_OUTPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE | HID_IOF_NON_VOLATILE),
+	HID_RI_END_COLLECTION(0),
+};
+
+/** Device descriptor structure. This descriptor, located in SRAM 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 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              = 0x2067,
+	.ReleaseNumber          = VERSION_BCD(0,0,1),
+
+	.ManufacturerStrIndex   = NO_DESCRIPTOR,
+	.ProductStrIndex        = NO_DESCRIPTOR,
+	.SerialNumStrIndex      = NO_DESCRIPTOR,
+
+	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
+};
+
+/** Configuration descriptor structure. This descriptor, located in SRAM 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 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,
+
+			.MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)
+		},
+
+	.HID_Interface =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
+
+			.InterfaceNumber        = INTERFACE_ID_GenericHID,
+			.AlternateSetting       = 0x00,
+
+			.TotalEndpoints         = 1,
+
+			.Class                  = HID_CSCP_HIDClass,
+			.SubClass               = HID_CSCP_NonBootSubclass,
+			.Protocol               = HID_CSCP_NonBootProtocol,
+
+			.InterfaceStrIndex      = NO_DESCRIPTOR
+		},
+
+	.HID_VendorHID =
+		{
+			.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(HIDReport)
+		},
+
+	.HID_ReportINEndpoint =
+		{
+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
+
+			.EndpointAddress        = HID_IN_EPADDR,
+			.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
+			.EndpointSize           = HID_IN_EPSIZE,
+			.PollingIntervalMS      = 0x05
+		},
+};
+
+/** 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 void* Address = NULL;
+	uint16_t    Size    = NO_DESCRIPTOR;
+
+	/* If/Else If chain compiles slightly smaller than a switch case */
+	if (DescriptorType == DTYPE_Device)
+	{
+		Address = &DeviceDescriptor;
+		Size    = sizeof(USB_Descriptor_Device_t);
+	}
+	else if (DescriptorType == DTYPE_Configuration)
+	{
+		Address = &ConfigurationDescriptor;
+		Size    = sizeof(USB_Descriptor_Configuration_t);
+	}
+	else if (DescriptorType == HID_DTYPE_HID)
+	{
+		Address = &ConfigurationDescriptor.HID_VendorHID;
+		Size    = sizeof(USB_HID_Descriptor_HID_t);
+	}
+	else if (DescriptorType == HID_DTYPE_Report)
+	{
+		Address = &HIDReport;
+		Size    = sizeof(HIDReport);
+	}
+
+	*DescriptorAddress = Address;
+	return Size;
+}
+
diff --git a/Bootloaders/HID/Descriptors.h b/Bootloaders/HID/Descriptors.h
new file mode 100644
index 0000000000..5516b16354
--- /dev/null
+++ b/Bootloaders/HID/Descriptors.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
+ *
+ *  Header file for Descriptors.c.
+ */
+
+#ifndef _DESCRIPTORS_H_
+#define _DESCRIPTORS_H_
+
+	/* Includes: */
+		#include <LUFA/Drivers/USB/USB.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;
+
+			// Generic HID Interface
+			USB_Descriptor_Interface_t            HID_Interface;
+			USB_HID_Descriptor_HID_t              HID_VendorHID;
+			USB_Descriptor_Endpoint_t             HID_ReportINEndpoint;
+		} 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_GenericHID = 0, /**< GenericHID interface descriptor ID */
+		};
+
+	/* Macros: */
+		/** Endpoint address of the HID data IN endpoint. */
+		#define HID_IN_EPADDR                (ENDPOINT_DIR_IN | 1)
+
+		/** Size in bytes of the HID reporting IN endpoint. */
+		#define HID_IN_EPSIZE                64
+
+	/* 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/Bootloaders/HID/HostLoaderApp/.gitignore b/Bootloaders/HID/HostLoaderApp/.gitignore
new file mode 100644
index 0000000000..4e73d1ec5b
--- /dev/null
+++ b/Bootloaders/HID/HostLoaderApp/.gitignore
@@ -0,0 +1 @@
+hid_bootloader_cli
diff --git a/Bootloaders/HID/HostLoaderApp/Makefile b/Bootloaders/HID/HostLoaderApp/Makefile
new file mode 100644
index 0000000000..d7d6458a5c
--- /dev/null
+++ b/Bootloaders/HID/HostLoaderApp/Makefile
@@ -0,0 +1,40 @@
+OS ?= LINUX
+#OS ?= WINDOWS
+#OS ?= MACOSX
+#OS ?= BSD
+
+ifeq ($(OS), LINUX)  # also works on FreeBSD
+CC ?= gcc
+CFLAGS ?= -O2 -Wall
+hid_bootloader_cli: hid_bootloader_cli.c
+	$(CC) $(CFLAGS) -s -DUSE_LIBUSB -o hid_bootloader_cli hid_bootloader_cli.c -lusb
+
+
+else ifeq ($(OS), WINDOWS)
+CC = i586-mingw32msvc-gcc
+CFLAGS ?= -O2 -Wall
+LDLIB = -lsetupapi -lhid
+hid_bootloader_cli.exe: hid_bootloader_cli.c
+	$(CC) $(CFLAGS) -s -DUSE_WIN32 -o hid_bootloader_cli.exe hid_bootloader_cli.c $(LDLIB)
+
+
+else ifeq ($(OS), MACOSX)
+CC ?= gcc
+SDK ?= /Developer/SDKs/MacOSX10.5.sdk
+CFLAGS ?= -O2 -Wall
+hid_bootloader_cli: hid_bootloader_cli.c
+	$(CC) $(CFLAGS) -DUSE_APPLE_IOKIT -isysroot $(SDK) -o hid_bootloader_cli hid_bootloader_cli.c -Wl,-syslibroot,$(SDK) -framework IOKit -framework CoreFoundation
+
+
+else ifeq ($(OS), BSD)  # works on NetBSD and OpenBSD
+CC ?= gcct
+CFLAGS ?= -O2 -Wall
+hid_bootloader_cli: hid_bootloader_cli.c
+	$(CC) $(CFLAGS) -s -DUSE_UHID -o hid_bootloader_cli hid_bootloader_cli.c
+
+
+endif
+
+
+clean:
+	rm -f hid_bootloader_cli hid_bootloader_cli.exe
diff --git a/Bootloaders/HID/HostLoaderApp/Makefile.bsd b/Bootloaders/HID/HostLoaderApp/Makefile.bsd
new file mode 100644
index 0000000000..a15a664053
--- /dev/null
+++ b/Bootloaders/HID/HostLoaderApp/Makefile.bsd
@@ -0,0 +1,21 @@
+OS ?= FreeBSD
+#OS ?= NetBSD
+#OS ?= OpenBSD
+
+CFLAGS ?= -O2 -Wall
+CC ?= gcc
+
+.if $(OS) == "FreeBSD"
+CFLAGS += -DUSE_LIBUSB
+LIBS =  -lusb
+.elif $(OS) == "NetBSD" || $(OS) == "OpenBSD"
+CFLAGS += -DUSE_UHID
+LIBS =
+.endif
+
+
+hid_bootloader_cli: hid_bootloader_cli.c
+	$(CC) $(CFLAGS) -s -o hid_bootloader_cli hid_bootloader_cli.c $(LIBS)
+
+clean:
+	rm -f hid_bootloader_cli
diff --git a/Bootloaders/HID/HostLoaderApp/gpl3.txt b/Bootloaders/HID/HostLoaderApp/gpl3.txt
new file mode 100644
index 0000000000..94a9ed024d
--- /dev/null
+++ b/Bootloaders/HID/HostLoaderApp/gpl3.txt
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL pro