text: /* Teensyduino Core Library
   * http://www.pjrc.com/teensy/
   * Copyright (c) 2013 PJRC.COM, LLC.
   * Modified by Jacob Alexander (2013-2016)
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * 1. The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * 2. If the Software is incorporated into a build system that allows
   * selection among a list of target devices, then similar target
   * devices manufactured by PJRC.COM must be included in the list of
   * target devices and selectable in the same manner.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  // ----- Includes -----
  
  // Local Includes
  #include "usb_desc.h"
  
  // Generated Includes
  #include <kll_defs.h>
  
  
  
  // ----- Macros -----
  
  #define LSB(n) ((n) & 255)
  #define MSB(n) (((n) >> 8) & 255)
  
  
  
  // ----- USB Device Descriptor -----
  
  // USB Device Descriptor.  The USB host reads this first, to learn
  // what type of device is connected.
  static uint8_t device_descriptor[] = {
  	18,                                     // bLength
  	1,                                      // bDescriptorType
  	0x00, 0x02,                             // bcdUSB
  	DEVICE_CLASS,                           // bDeviceClass
  	DEVICE_SUBCLASS,                        // bDeviceSubClass
  	DEVICE_PROTOCOL,                        // bDeviceProtocol
  	EP0_SIZE,                               // bMaxPacketSize0
  	LSB(VENDOR_ID), MSB(VENDOR_ID),         // idVendor
  	LSB(PRODUCT_ID), MSB(PRODUCT_ID),       // idProduct
  	LSB(BCD_VERSION), MSB(BCD_VERSION),     // bcdDevice
  	1,                                      // iManufacturer
  	2,                                      // iProduct
  	3,                                      // iSerialNumber
  	1                                       // bNumConfigurations
  };
  
  // USB Device Qualifier Descriptor
  static uint8_t device_qualifier_descriptor[] = {
  	0                                       // Indicate only single speed
  	/* Device qualifier example (used for specifying multiple USB speeds)
  	10,                                     // bLength
  	6,                                      // bDescriptorType
  	0x00, 0x02,                             // bcdUSB
  	DEVICE_CLASS,                           // bDeviceClass
  	DEVICE_SUBCLASS,                        // bDeviceSubClass
  	DEVICE_PROTOCOL,                        // bDeviceProtocol
  	EP0_SIZE,                               // bMaxPacketSize0
  	0,                                      // bNumOtherSpeedConfigurations
  	0                                       // bReserved
  	*/
  };
  
  // USB Debug Descriptor
  // XXX Not sure of exact use, lsusb requests it
  static uint8_t usb_debug_descriptor[] = {
  	0
  };
  
  // XXX
  // These descriptors must NOT be "const", because the USB DMA
  // has trouble accessing flash memory with enough bandwidth
  // while the processor is executing from flash.
  // XXX
  
  
  
  // ----- USB HID Report Descriptors -----
  
  // Each HID interface needs a special report descriptor that tells
  // the meaning and format of the data.
  
  // Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
  #if enableKeyboard_define == 1
  static uint8_t keyboard_report_desc[] = {
  	// Keyboard Collection
  	0x05, 0x01,          // Usage Page (Generic Desktop),
  	0x09, 0x06,          // Usage (Keyboard),
  	0xA1, 0x01,          // Collection (Application) - Keyboard,
  
  	// Modifier Byte
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x08,          //   Report Count (8),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0xE0,          //   Usage Minimum (224),
  	0x29, 0xE7,          //   Usage Maximum (231),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute),
  
  	// Reserved Byte
  	0x75, 0x08,          //   Report Size (8),
  	0x95, 0x01,          //   Report Count (1),
  	0x81, 0x03,          //   Output (Constant),
  
  	// LED Report
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x05,          //   Report Count (5),
  	0x05, 0x08,          //   Usage Page (LEDs),
  	0x19, 0x01,          //   Usage Minimum (1),
  	0x29, 0x05,          //   Usage Maximum (5),
  	0x91, 0x02,          //   Output (Data, Variable, Absolute),
  
  	// LED Report Padding
  	0x75, 0x03,          //   Report Size (3),
  	0x95, 0x01,          //   Report Count (1),
  	0x91, 0x03,          //   Output (Constant),
  
  	// Normal Keys
  	0x75, 0x08,          //   Report Size (8),
  	0x95, 0x06,          //   Report Count (6),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x7F,          //   Logical Maximum(104),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0x00,          //   Usage Minimum (0),
  	0x29, 0x7F,          //   Usage Maximum (104),
  	0x81, 0x00,          //   Input (Data, Array),
  	0xc0,                // End Collection - Keyboard
  };
  
  // Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
  static uint8_t nkro_keyboard_report_desc[] = {
  	// Keyboard Collection
  	0x05, 0x01,          // Usage Page (Generic Desktop),
  	0x09, 0x06,          // Usage (Keyboard),
  	0xA1, 0x01,          // Collection (Application) - Keyboard,
  
  	// LED Report
  	0x85, 0x01,          //   Report ID (1),
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x05,          //   Report Count (5),
  	0x05, 0x08,          //   Usage Page (LEDs),
  	0x19, 0x01,          //   Usage Minimum (1),
  	0x29, 0x05,          //   Usage Maximum (5),
  	0x91, 0x02,          //   Output (Data, Variable, Absolute),
  
  	// LED Report Padding
  	0x75, 0x03,          //   Report Size (3),
  	0x95, 0x01,          //   Report Count (1),
  	0x91, 0x03,          //   Output (Constant),
  
  	// Normal Keys - Using an NKRO Bitmap
  	//
  	// NOTES:
  	// Supports all keys defined by the spec, except 1-3 which define error events
  	//  and 0 which is "no keys pressed"
  	// See http://www.usb.org/developers/hidpage/Hut1_12v2.pdf Chapter 10
  	// Or Macros/PartialMap/usb_hid.h
  	//
  	// 50 (ISO \ due to \ bug) and 156 (Clear due to Delete bug) must be excluded
  	//  due to a Linux bug with bitmaps (not useful anyways)
  	// 165-175 are reserved/unused as well as 222-223 and 232-65535
  	//
  	// Compatibility Notes:
  	//  - Using a second endpoint for a boot mode device helps with compatibility
  	//  - DO NOT use Padding in the descriptor for bitfields
  	//    (Mac OSX silently fails... Windows/Linux work correctly)
  	//  - DO NOT use Report IDs, Windows 8.1 will not update keyboard correctly (modifiers disappear)
  	//    (all other OSs, including OSX work fine...)
  	//    (you can use them *iff* you only have 1 per collection)
  	//  - Mac OSX and Windows 8.1 are extremely picky about padding
  	//
  	// Packing of bitmaps are as follows:
  	//   4-49  :  6 bytes (0x04-0x31) ( 46 bits + 2 padding bits for 6 bytes total)
  	//  51-155 : 14 bytes (0x33-0x9B) (105 bits + 6 padding bits for 15 bytes total)
  	// 157-164 :  1 byte  (0x9D-0xA4) (  8 bits)
  	// 176-221 :  6 bytes (0xB0-0xDD) ( 46 bits + 2 padding bits for 6 bytes total)
  	// 224-231 :  1 byte  (0xE0-0xE7) (  8 bits)
  
  	// Modifier Byte
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x08,          //   Report Count (8),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0xE0,          //   Usage Minimum (224),
  	0x29, 0xE7,          //   Usage Maximum (231),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute),
  
  	// 4-49 (6 bytes/46 bits) - MainKeys
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x2E,          //   Report Count (46),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0x04,          //   Usage Minimum (4),
  	0x29, 0x31,          //   Usage Maximum (49),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
  
  	// Padding (2 bits)
  	0x75, 0x02,          //   Report Size (2),
  	0x95, 0x01,          //   Report Count (1),
  	0x81, 0x03,          //   Input (Constant),
  
  	// 51-155 (14 bytes/105 bits) - SecondaryKeys
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x69,          //   Report Count (105),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0x33,          //   Usage Minimum (51),
  	0x29, 0x9B,          //   Usage Maximum (155),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
  
  	// Padding (7 bits)
  	0x75, 0x07,          //   Report Size (7),
  	0x95, 0x01,          //   Report Count (1),
  	0x81, 0x03,          //   Input (Constant),
  
  	// 157-164 (1 byte/8 bits) - TertiaryKeys
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x08,          //   Report Count (8),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0x9D,          //   Usage Minimum (157),
  	0x29, 0xA4,          //   Usage Maximum (164),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
  
  	// 176-221 (6 bytes/46 bits) - QuartiaryKeys
  	0x75, 0x01,          //   Report Size (1),
  	0x95, 0x2E,          //   Report Count (46),
  	0x15, 0x00,          //   Logical Minimum (0),
  	0x25, 0x01,          //   Logical Maximum (1),
  	0x05, 0x07,          //   Usage Page (Key Codes),
  	0x19, 0xB0,          //   Usage Minimum (176),
  	0x29, 0xDD,          //   Usage Maximum (221),
  	0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
  
  	// Padding (2 bits)
  	0x75, 0x02,          //   Report Size (2),
  	0x95, 0x01,          //   Report Count (1),
  	0x81, 0x03,          //   Input (Constant),
  	0xc0,                // End Collection - Keyboard
  };
  
  // System Control and Consumer Control
  static uint8_t sys_ctrl_report_desc[] = {
  	// System Control Collection (8 bits)
  	//
  	// NOTES:
  	// Not bothering with NKRO for this table. If there's need, I can implement it. -HaaTa
  	// Using a 1KRO scheme
  	0x05, 0x01,          // Usage Page (Generic Desktop),
  	0x09, 0x80,          // Usage (System Control),
  	0xA1, 0x01,          // Collection (Application),
  	0x85, 0x02,          //   Report ID (2),
  	0x75, 0x08,          //   Report Size (8),
  	0x95, 0x01,          //   Report Count (1),
  	0x16, 0x81, 0x00,    //   Logical Minimum (129),
  	0x26, 0xB7, 0x00,    //   Logical Maximum (183),
  	0x19, 0x81,          //   Usage Minimum (129),
  	0x29, 0xB7,          //   Usage Maximum (183),
  	0x81, 0x00,          //   Input (Data, Array),
  	0xc0,                // End Collection - System Control
  
  	// Consumer Control Collection - Media Keys (16 bits)
  	//
  	// NOTES:
  	// Not bothering with NKRO for this table. If there's a need, I can implement it. -HaaTa
  	// Using a 1KRO scheme
  	0x05, 0x0c,          // Usage Page (Consumer),
  	0x09, 0x01,          // Usage (Consumer Control),
  	0xA1, 0x01,          // Collection (Application),
  	0x85, 0x03,          //   Report ID (3),
  	0x75, 0x10,          //   Report Size (16),
  	0x95, 0x01,          //   Report Count (1),
  	0x16, 0x01, 0x00,    //   Logical Minimum (1),
  	0x26, 0x9D, 0x02,    //   Logical Maximum (669),
  	0x05, 0x0C,          //   Usage Page (Consumer),
  	0x19, 0x01,          //   Usage Minimum (1),
  	0x2A, 0x9D, 0x02,    //   Usage Maximum (669),
  	0x81, 0x00,          //   Input (Data, Array),
  	0xc0,                // End Collection - Consumer Control
  };
  #endif
  
  
  // Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
  #if enableMouse_define == 1
  static uint8_t mouse_report_desc[] = {
  	0x05, 0x01,        // Usage Page (Generic Desktop)
  	0x09, 0x02,        // Usage (Mouse)
  	0xA1, 0x01,        // Collection (Application)
  	0x09, 0x02,        //   Usage (Mouse)
  	0xA1, 0x02,        //   Collection (Logical)
  	0x09, 0x01,        //     Usage (Pointer)
  
  	// Buttons (16 bits)
  	0xA1, 0x00,        //     Collection (Physical) - Buttons
  	0x05, 0x09,        //       Usage Page (Button)
  	0x19, 0x01,        //       Usage Minimum (Button 1)
  	0x29, 0x10,        //       Usage Maximum (Button 16)
  	0x15, 0x00,        //       Logical Minimum (0)
  	0x25, 0x01,        //       Logical Maximum (1)
  	0x75, 0x01,        //       Report Size (1)
  	0x95, 0x10,        //       Report Count (16)
  	0x81, 0x02,        //       Input (Data,Var,Abs)
  
  	// Pointer (32 bits)
  	0x05, 0x01,        //       Usage PAGE (Generic Desktop)
  	0x09, 0x30,        //       Usage (X)
  	0x09, 0x31,        //       Usage (Y)
  	0x16, 0x01, 0x80,  //       Logical Minimum (-32 767)
  	0x26, 0xFF, 0x7F,  //       Logical Maximum (32 767)
  	0x75, 0x10,        //       Report Size (16)
  	0x95, 0x02,        //       Report Count (2)
  	0x81, 0x06,        //       Input (Data,Var,Rel)
  
  	/*
  	// Vertical Wheel
  	// - Multiplier (2 bits)
  	0xa1, 0x02,        //       Collection (Logical)
  	0x09, 0x48,        //         Usage (Resolution Multiplier)
  	0x15, 0x00,        //         Logical Minimum (0)
  	0x25, 0x01,        //         Logical Maximum (1)
  	0x35, 0x01,        //         Physical Minimum (1)
  	0x45, 0x04,        //         Physical Maximum (4)
  	0x75, 0x02,        //         Report Size (2)
  	0x95, 0x01,        //         Report Count (1)
  	0xa4,              //         Push
  	0xb1, 0x02,        //         Feature (Data,Var,Abs)
  	// - Device (8 bits)
  	0x09, 0x38,        //         Usage (Wheel)
  	0x15, 0x81,        //         Logical Minimum (-127)
  	0x25, 0x7f,        //         Logical Maximum (127)
  	0x35, 0x00,        //         Physical Minimum (0)        - reset physical
  	0x45, 0x00,        //         Physical Maximum (0)
  	0x75, 0x08,        //         Report Size (8)
  	0x81, 0x06,        //         Input (Data,Var,Rel)
  	0xc0,              //       End Collection - Vertical Wheel
  
  	// Horizontal Wheel
  	// - Multiplier (2 bits)
  	0xa1, 0x02,        //       Collection (Logical)
  	0x09, 0x48,        //         Usage (Resolution Multiplier)
  	0xb4,              //         Pop
  	0xb1, 0x02,        //         Feature (Data,Var,Abs)
  	// - Padding (4 bits)
  	0x35, 0x00,        //         Physical Minimum (0)        - reset physical
  	0x45, 0x00,        //         Physical Maximum (0)
  	0x75, 0x04,        //         Report Size (4)
  	0xb1, 0x03,        //         Feature (Cnst,Var,Abs)
  	// - Device (8 bits)
  	0x05, 0x0c,        //         Usage Page (Consumer Devices)
  	0x0a, 0x38, 0x02,  //         Usage (AC Pan)
  	0x15, 0x81,        //         Logical Minimum (-127)
  	0x25, 0x7f,        //         Logical Maximum (127)
  	0x75, 0x08,        //         Report Size (8)
  	0x81, 0x06,        //         Input (Data,Var,Rel)
  	0xc0,              //       End Collection - Horizontal Wheel
  
  	*/
  	0xc0,              //     End Collection - Buttons
  	0xc0,              //   End Collection - Mouse Logical
  	0xc0               // End Collection - Mouse Application
  };
  #endif
  
  
  // Joystick Protocol, HID 1.11 spec, Apendix D, page 64-65
  #if enableJoystick_define == 1
  static uint8_t joystick_report_desc[] = {
  	0x05, 0x01,                     // Usage Page (Generic Desktop)
  	0x09, 0x04,                     // Usage (Joystick)
  	0xA1, 0x01,                     // Collection (Application)
  	0x15, 0x00,                     // Logical Minimum (0)
  	0x25, 0x01,                     // Logical Maximum (1)
  	0x75, 0x01,                     // Report Size (1)
  	0x95, 0x20,                     // Report Count (32)
  	0x05, 0x09,                     // Usage Page (Button)
  	0x19, 0x01,                     // Usage Minimum (Button #1)
  	0x29, 0x20,                     // Usage Maximum (Button #32)
  	0x81, 0x02,                     // Input (variable,absolute)
  	0x15, 0x00,                     // Logical Minimum (0)
  	0x25, 0x07,                     // Logical Maximum (7)
  	0x35, 0x00,                     // Physical Minimum (0)
  	0x46, 0x3B, 0x01,               // Physical Maximum (315)
  	0x75, 0x04,                     // Report Size (4)
  	0x95, 0x01,                     // Report Count (1)
  	0x65, 0x14,                     // Unit (20)
  	0x05, 0x01,                     // Usage Page (Generic Desktop)
  	0x09, 0x39,                     // Usage (Hat switch)
  	0x81, 0x42,                     // Input (variable,absolute,null_state)
  	0x05, 0x01,                     // Usage Page (Generic Desktop)
  	0x09, 0x01,                     // Usage (Pointer)
  	0xA1, 0x00,                     // Collection ()
  	0x15, 0x00,                     //   Logical Minimum (0)
  	0x26, 0xFF, 0x03,               //   Logical Maximum (1023)
  	0x75, 0x0A,                     //   Report Size (10)
  	0x95, 0x04,                     //   Report Count (4)
  	0x09, 0x30,                     //   Usage (X)
  	0x09, 0x31,                     //   Usage (Y)
  	0x09, 0x32,                     //   Usage (Z)
  	0x09, 0x35,                     //   Usage (Rz)
  	0x81, 0x02,                     //   Input (variable,absolute)
  	0xC0,                           // End Collection
  	0x15, 0x00,                     // Logical Minimum (0)
  	0x26, 0xFF, 0x03,               // Logical Maximum (1023)
  	0x75, 0x0A,                     // Report Size (10)
  	0x95, 0x02,                     // Report Count (2)
  	0x09, 0x36,                     // Usage (Slider)
  	0x09, 0x36,                     // Usage (Slider)
  	0x81, 0x02,                     // Input (variable,absolute)
  	0xC0                            // End Collection
  };
  #endif
  
  
  
  // ----- USB Configuration -----
  
  // Check for non-selected USB descriptors to update the total interface count
  // XXX This must be correct or some OSs/Init sequences will not initialize the keyboard/device
  #if enableKeyboard_define != 1
  #undef  KEYBOARD_INTERFACES
  #define KEYBOARD_INTERFACES 0
  #endif
  
  #if enableMouse_define != 1
  #undef  MOUSE_INTERFACES
  #define MOUSE_INTERFACES 0
  #endif
  
  #if enableJoystick_define != 1
  #undef  JOYSTICK_INTERFACES
  #define JOYSTICK_INTERFACES 0
  #endif
  
  #if enableVirtualSerialPort_define != 1
  #undef  CDC_INTERFACES
  #define CDC_INTERFACES 0
  #endif
  
  #if enableRawIO_define != 1
  #undef  RAWIO_INTERFACES
  #define RAWIO_INTERFACES 0
  #endif
  
  // Determine number of interfaces
  #define NUM_INTERFACE (KEYBOARD_INTERFACES + CDC_INTERFACES + MOUSE_INTERFACES + JOYSTICK_INTERFACES + RAWIO_INTERFACES)
  
  
  // USB Configuration Descriptor.  This huge descriptor tells all
  // of the devices capbilities.
  static uint8_t config_descriptor[] = {
  // --- Configuration ---
  // - 9 bytes -
  	// configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
  	9,                                      // bLength;
  	2,                                      // bDescriptorType;
  	0xFF,                                   // wTotalLength - XXX Set in usb_init (simplifies defines)
  	0xFF,
  	NUM_INTERFACE,                          // bNumInterfaces
  	1,                                      // bConfigurationValue
  	0,                                      // iConfiguration
  	0xA0,                                   // bmAttributes
  	250,                                    // bMaxPower - Entry Index 8
  
  
  //
  // --- Keyboard Endpoint Descriptors ---
  //
  #if enableKeyboard_define == 1
  #define KEYBOARD_DESC_TOTAL_OFFSET     (KEYBOARD_DESC_SIZE + NKRO_KEYBOARD_DESC_SIZE + SYS_CTRL_DESC_SIZE)
  #define NKRO_KEYBOARD_DESC_BASE_OFFSET (KEYBOARD_DESC_BASE_OFFSET + KEYBOARD_DESC_SIZE)
  #define SYS_CTRL_DESC_BASE_OFFSET      (KEYBOARD_DESC_BASE_OFFSET + KEYBOARD_DESC_SIZE + NKRO_KEYBOARD_DESC_SIZE)
  
  // --- Keyboard HID --- Boot Mode Keyboard Interface
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	KEYBOARD_INTERFACE,                     // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x03,                                   // bInterfaceClass (0x03 = HID)
  	0x01,                                   // bInterfaceSubClass (0x00 = Non-Boot, 0x01 = Boot)
  	0x01,                                   // bInterfaceProtocol (0x01 = Keyboard)
  	KEYBOARD_INTERFACE + 4,                 // iInterface
  // - 9 bytes -
  	// HID interface descriptor, HID 1.11 spec, section 6.2.1
  	9,                                      // bLength
  	0x21,                                   // bDescriptorType
  	0x11, 0x01,                             // bcdHID
  	KeyboardLocale_define,                  // bCountryCode
  	1,                                      // bNumDescriptors
  	0x22,                                   // bDescriptorType
  	LSB(sizeof(keyboard_report_desc)),      // wDescriptorLength
  	MSB(sizeof(keyboard_report_desc)),
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	KEYBOARD_ENDPOINT | 0x80,               // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	KEYBOARD_SIZE, 0,                       // wMaxPacketSize
  	KEYBOARD_INTERVAL,                      // bInterval
  
  // --- NKRO Keyboard HID --- OS Mode Keyboard Interface
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	NKRO_KEYBOARD_INTERFACE,                // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x03,                                   // bInterfaceClass (0x03 = HID)
  	0x00,                                   // bInterfaceSubClass (0x00 = Non-Boot, 0x01 = Boot)
  	0x01,                                   // bInterfaceProtocol (0x01 = Keyboard)
  	NKRO_KEYBOARD_INTERFACE + 4,            // iInterface
  // - 9 bytes -
  	// HID interface descriptor, HID 1.11 spec, section 6.2.1
  	9,                                      // bLength
  	0x21,                                   // bDescriptorType
  	0x11, 0x01,                             // bcdHID
  	KeyboardLocale_define,                  // bCountryCode
  	1,                                      // bNumDescriptors
  	0x22,                                   // bDescriptorType
  	LSB(sizeof(nkro_keyboard_report_desc)), // wDescriptorLength
  	MSB(sizeof(nkro_keyboard_report_desc)),
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	NKRO_KEYBOARD_ENDPOINT | 0x80,          // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	NKRO_KEYBOARD_SIZE, 0,                  // wMaxPacketSize
  	NKRO_KEYBOARD_INTERVAL,                 // bInterval
  
  // --- System/Consumer Control ---
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	SYS_CTRL_INTERFACE,                     // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x03,                                   // bInterfaceClass (0x03 = HID)
  	0x01,                                   // bInterfaceSubClass (0x00 = Non-Boot, 0x01 = Boot)
  	0x00,                                   // bInterfaceProtocol (0x00 = None)
  	SYS_CTRL_INTERFACE + 4,                 // iInterface
  // - 9 bytes -
  	// HID interface descriptor, HID 1.11 spec, section 6.2.1
  	9,                                      // bLength
  	0x21,                                   // bDescriptorType
  	0x11, 0x01,                             // bcdHID
  	KeyboardLocale_define,                  // bCountryCode
  	1,                                      // bNumDescriptors
  	0x22,                                   // bDescriptorType
  	LSB(sizeof(sys_ctrl_report_desc)),      // wDescriptorLength
  	MSB(sizeof(sys_ctrl_report_desc)),
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	SYS_CTRL_ENDPOINT | 0x80,               // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	SYS_CTRL_SIZE, 0,                       // wMaxPacketSize
  	SYS_CTRL_INTERVAL,                      // bInterval
  #else
  #define KEYBOARD_DESC_TOTAL_OFFSET (0)
  #endif
  
  
  //
  // --- CDC / Serial Port Endpoint Descriptors ---
  //
  #if enableVirtualSerialPort_define == 1
  #define SERIAL_CDC_DESC_TOTAL_OFFSET (SERIAL_CDC_DESC_SIZE)
  
  // --- Serial CDC --- CDC IAD Descriptor
  // - 8 bytes -
  	// interface association descriptor, USB ECN, Table 9-Z
  	8,                                      // bLength
  	11,                                     // bDescriptorType
  	CDC_STATUS_INTERFACE,                   // bFirstInterface
  	2,                                      // bInterfaceCount
  	0x02,                                   // bFunctionClass
  	0x02,                                   // bFunctionSubClass
  	0x01,                                   // bFunctionProtocol
  	0,                                      // iFunction (XXX No interface index, don't give string -HaaTa)
  
  // --- Serial CDC --- CDC Data Interface
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	CDC_STATUS_INTERFACE,                   // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x02,                                   // bInterfaceClass
  	0x02,                                   // bInterfaceSubClass
  	0x01,                                   // bInterfaceProtocol
  	CDC_STATUS_INTERFACE + 4,               // iInterface
  // - 5 bytes -
  	// CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
  	5,                                      // bFunctionLength
  	0x24,                                   // bDescriptorType
  	0x00,                                   // bDescriptorSubtype
  	0x10, 0x01,                             // bcdCDC
  // - 5 bytes -
  	// Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
  	5,                                      // bFunctionLength
  	0x24,                                   // bDescriptorType
  	0x01,                                   // bDescriptorSubtype
  	0x01,                                   // bmCapabilities
  	CDC_DATA_INTERFACE,                     // bDataInterface
  // - 4 bytes -
  	// Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
  	4,                                      // bFunctionLength
  	0x24,                                   // bDescriptorType
  	0x02,                                   // bDescriptorSubtype
  	0x06,                                   // bmCapabilities
  // - 5 bytes -
  	// Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
  	5,                                      // bFunctionLength
  	0x24,                                   // bDescriptorType
  	0x06,                                   // bDescriptorSubtype
  	CDC_STATUS_INTERFACE,                   // bMasterInterface
  	CDC_DATA_INTERFACE,                     // bSlaveInterface0
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	CDC_ACM_ENDPOINT | 0x80,                // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	CDC_ACM_SIZE, 0,                        // wMaxPacketSize
  	64,                                     // bInterval
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	CDC_DATA_INTERFACE,                     // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	2,                                      // bNumEndpoints
  	0x0A,                                   // bInterfaceClass
  	0x00,                                   // bInterfaceSubClass
  	0x00,                                   // bInterfaceProtocol
  	CDC_DATA_INTERFACE + 4,                 // iInterface
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	CDC_RX_ENDPOINT,                        // bEndpointAddress
  	0x02,                                   // bmAttributes (0x02=bulk)
  	CDC_RX_SIZE, 0,                         // wMaxPacketSize
  	0,                                      // bInterval
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	CDC_TX_ENDPOINT | 0x80,                 // bEndpointAddress
  	0x02,                                   // bmAttributes (0x02=bulk)
  	CDC_TX_SIZE, 0,                         // wMaxPacketSize
  	0,                                      // bInterval
  #else
  #define SERIAL_CDC_DESC_TOTAL_OFFSET (0)
  #endif
  
  
  //
  // --- Raw IO Endpoint Descriptors ---
  //
  #if enableRawIO_define == 1
  #define RAWIO_DESC_TOTAL_OFFSET (RAWIO_DESC_SIZE)
  
  // --- Vendor Specific / RAW I/O ---
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	RAWIO_INTERFACE,                        // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	2,                                      // bNumEndpoints
  	0xFF,                                   // bInterfaceClass (0xFF)
  	0xFF,                                   // bInterfaceSubClass
  	0xFF,                                   // bInterfaceProtocol
  	RAWIO_INTERFACE + 4,                    // iInterface
  
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	RAWIO_TX_ENDPOINT | 0x80,               // bEndpointAddress
  	0x02,                                   // bmAttributes (0x02=bulk)
  	RAWIO_TX_SIZE, 0,                       // wMaxPacketSize
  	RAWIO_TX_INTERVAL,                      // bInterval
  
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	RAWIO_RX_ENDPOINT,                      // bEndpointAddress
  	0x02,                                   // bmAttributes (0x02=bulk)
  	RAWIO_RX_SIZE, 0,                       // wMaxPacketSize
  	RAWIO_RX_INTERVAL,                      // bInterval
  #else
  #define RAWIO_DESC_TOTAL_OFFSET (0)
  #endif
  
  
  //
  // --- Mouse Endpoint Descriptors ---
  //
  #if enableMouse_define == 1
  #define MOUSE_DESC_TOTAL_OFFSET (MOUSE_DESC_SIZE)
  
  // --- Mouse Interface ---
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	MOUSE_INTERFACE,                        // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x03,                                   // bInterfaceClass (0x03 = HID)
  	0x00,                                   // bInterfaceSubClass (0x01 = Boot)
  	0x02,                                   // bInterfaceProtocol (0x02 = Mouse)
  	MOUSE_INTERFACE + 4,                    // iInterface
  // - 9 bytes -
  	// HID interface descriptor, HID 1.11 spec, section 6.2.1
  	9,                                      // bLength
  	0x21,                                   // bDescriptorType
  	0x11, 0x01,                             // bcdHID
  	0,                                      // bCountryCode
  	1,                                      // bNumDescriptors
  	0x22,                                   // bDescriptorType
  	LSB(sizeof(mouse_report_desc)),         // wDescriptorLength
  	MSB(sizeof(mouse_report_desc)),
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	MOUSE_ENDPOINT | 0x80,                  // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	MOUSE_SIZE, 0,                          // wMaxPacketSize
  	MOUSE_INTERVAL,                         // bInterval
  #else
  #define MOUSE_DESC_TOTAL_OFFSET (0)
  #endif
  
  
  //
  // --- Joystick Endpoint Descriptors ---
  //
  #if enableJoystick_define == 1
  #define JOYSTICK_DESC_TOTAL_OFFSET (JOYSTICK_DESC_SIZE)
  
  // --- Joystick Interface ---
  // - 9 bytes -
  	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
  	9,                                      // bLength
  	4,                                      // bDescriptorType
  	JOYSTICK_INTERFACE,                     // bInterfaceNumber
  	0,                                      // bAlternateSetting
  	1,                                      // bNumEndpoints
  	0x03,                                   // bInterfaceClass (0x03 = HID)
  	0x00,                                   // bInterfaceSubClass
  	0x00,                                   // bInterfaceProtocol
  	JOYSTICK_INTERFACE + 4,                 // iInterface
  // - 9 bytes -
  	// HID interface descriptor, HID 1.11 spec, section 6.2.1
  	9,                                      // bLength
  	0x21,                                   // bDescriptorType
  	0x11, 0x01,                             // bcdHID
  	0,                                      // bCountryCode
  	1,                                      // bNumDescriptors
  	0x22,                                   // bDescriptorType
  	LSB(sizeof(joystick_report_desc)),      // wDescriptorLength
  	MSB(sizeof(joystick_report_desc)),
  // - 7 bytes -
  	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
  	7,                                      // bLength
  	5,                                      // bDescriptorType
  	JOYSTICK_ENDPOINT | 0x80,               // bEndpointAddress
  	0x03,                                   // bmAttributes (0x03=intr)
  	JOYSTICK_SIZE, 0,                       // wMaxPacketSize
  	JOYSTICK_INTERVAL,                      // bInterval
  #else
  #define JOYSTICK_DESC_TOTAL_OFFSET (0)
  #endif
  
  };
  
  uint8_t *usb_bMaxPower = &config_descriptor[8];
  
  
  
  // ----- String Descriptors -----
  
  // The descriptors above can provide human readable strings,
  // referenced by index numbers.  These descriptors are the
  // actual string data
  
  extern struct usb_string_descriptor_struct usb_string_manufacturer_name
  	__attribute__ ((weak, alias("usb_string_manufacturer_name_default")));
  extern struct usb_string_descriptor_struct usb_string_product_name
  	__attribute__ ((weak, alias("usb_string_product_name_default")));
  extern struct usb_string_descriptor_struct usb_string_serial_number
  	__attribute__ ((weak, alias("usb_string_serial_number_default")));
  
  struct usb_string_descriptor_struct string0 = {
  	4,
  	3,
  	{0x0409}
  };
  
  #define usb_string_descriptor(name, str) \
  	struct usb_string_descriptor_struct name = { \
  		sizeof(str), \
  		3, \
  		{str} \
  	}
  
  usb_string_descriptor( usb_string_manufacturer_name_default, STR_MANUFACTURER );
  usb_string_descriptor( usb_string_product_name_default, STR_PRODUCT );
  usb_string_descriptor( usb_string_serial_number_default, STR_SERIAL );
  
  #if enableKeyboard_define == 1
  usb_string_descriptor( usb_string_keyboard_name, KEYBOARD_NAME );
  usb_string_descriptor( usb_string_nkro_keyboard_name, NKRO_KEYBOARD_NAME );
  usb_string_descriptor( usb_string_sys_ctrl_name, SYS_CTRL_NAME );
  #endif
  
  #if enableVirtualSerialPort_define == 1
  usb_string_descriptor( usb_string_cdc_status_name, CDC_STATUS_NAME );
  usb_string_descriptor( usb_string_cdc_data_name, CDC_DATA_NAME );
  #endif
  
  #if enableRawIO_define == 1
  usb_string_descriptor( usb_string_rawio_name, RAWIO_NAME );
  #endif
  
  #if enableMouse_define == 1
  usb_string_descriptor( usb_string_mouse_name, MOUSE_NAME );
  #endif
  
  #if enableJoystick_define == 1
  usb_string_descriptor( usb_string_joystick_name, JOYSTICK_NAME );
  #endif
  
  
  
  // ----- Descriptors List -----
  
  #define iInterfaceString(num, var) \
  	{0x0300 + 4 + num, 0x0409, (const uint8_t *)&var, 0 }
  
  // This table provides access to all the descriptor data above.
  
  const usb_descriptor_list_t usb_descriptor_list[] = {
  	//wValue, wIndex, address,          length
  	{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
  	{0x0200, 0x0000, config_descriptor, sizeof(config_descriptor)},
  	{0x0600, 0x0000, device_qualifier_descriptor, sizeof(device_qualifier_descriptor)},
  	{0x0A00, 0x0000, usb_debug_descriptor, sizeof(usb_debug_descriptor)},
  
  	{0x0300, 0x0000, (const uint8_t *)&string0, 0},
  	{0x0301, 0x0409, (const uint8_t *)&usb_string_manufacturer_name, 0},
  	{0x0302, 0x0409, (const uint8_t *)&usb_string_product_name, 0},
  	{0x0303, 0x0409, (const uint8_t *)&usb_string_serial_number, 0},
  
  #if enableKeyboard_define == 1
  	{0x2200, KEYBOARD_INTERFACE, keyboard_report_desc, sizeof(keyboard_report_desc)},
  	{0x2100, KEYBOARD_INTERFACE, config_descriptor + KEYBOARD_DESC_BASE_OFFSET, 9},
  
  	{0x2200, NKRO_KEYBOARD_INTERFACE, nkro_keyboard_report_desc, sizeof(nkro_keyboard_report_desc)},
  	{0x2100, NKRO_KEYBOARD_INTERFACE, config_descriptor + NKRO_KEYBOARD_DESC_BASE_OFFSET, 9},
  
  	{0x2200, SYS_CTRL_INTERFACE, sys_ctrl_report_desc, sizeof(sys_ctrl_report_desc)},
  	{0x2100, SYS_CTRL_INTERFACE, config_descriptor + SYS_CTRL_DESC_BASE_OFFSET, 9},
  
  	iInterfaceString( KEYBOARD_INTERFACE, usb_string_keyboard_name ),
  	iInterfaceString( NKRO_KEYBOARD_INTERFACE, usb_string_nkro_keyboard_name ),
  	iInterfaceString( SYS_CTRL_INTERFACE, usb_string_sys_ctrl_name ),
  #endif
  
  #if enableVirtualSerialPort_define == 1
  	iInterfaceString( CDC_STATUS_INTERFACE, usb_string_cdc_status_name ),
  	iInterfaceString( CDC_DATA_INTERFACE, usb_string_cdc_data_name ),
  #endif
  
  #if enableRawIO_define == 1
  	iInterfaceString( RAWIO_INTERFACE, usb_string_rawio_name ),
  #endif
  
  #if enableMouse_define == 1
  	{0x2200, MOUSE_INTERFACE, mouse_report_desc, sizeof(mouse_report_desc)},
  	{0x2100, MOUSE_INTERFACE, config_descriptor + MOUSE_DESC_BASE_OFFSET, 9},
  	iInterfaceString( MOUSE_INTERFACE, usb_string_mouse_name ),
  #endif
  
  #if enableJoystick_define == 1
  	{0x2200, JOYSTICK_INTERFACE, joystick_report_desc, sizeof(joystick_report_desc)},
  	{0x2100, JOYSTICK_INTERFACE, config_descriptor + JOYSTICK_DESC_BASE_OFFSET, 9},
  	iInterfaceString( JOYSTICK_INTERFACE, usb_string_joystick_name ),
  #endif
  
  	{0, 0, NULL, 0}
  };
  
  // Simplifies defines for USB descriptors
  void usb_set_config_descriptor_size()
  {
  	config_descriptor[2] = LSB( sizeof( config_descriptor ) );
  	config_descriptor[3] = MSB( sizeof( config_descriptor ) );
  }
  
  
  
  // ----- Endpoint Configuration -----
  
  // See usb_desc.h for Endpoint configuration
  // 0x00 = not used
  // 0x19 = Recieve only
  // 0x15 = Transmit only
  // 0x1D = Transmit & Recieve
  //
  const uint8_t usb_endpoint_config_table[NUM_ENDPOINTS] =
  {
  #if (defined(ENDPOINT1_CONFIG) && NUM_ENDPOINTS >= 1)
  	ENDPOINT1_CONFIG,
  #elif (NUM_ENDPOINTS >= 1)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT2_CONFIG) && NUM_ENDPOINTS >= 2)
  	ENDPOINT2_CONFIG,
  #elif (NUM_ENDPOINTS >= 2)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT3_CONFIG) && NUM_ENDPOINTS >= 3)
  	ENDPOINT3_CONFIG,
  #elif (NUM_ENDPOINTS >= 3)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT4_CONFIG) && NUM_ENDPOINTS >= 4)
  	ENDPOINT4_CONFIG,
  #elif (NUM_ENDPOINTS >= 4)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT5_CONFIG) && NUM_ENDPOINTS >= 5)
  	ENDPOINT5_CONFIG,
  #elif (NUM_ENDPOINTS >= 5)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT6_CONFIG) && NUM_ENDPOINTS >= 6)
  	ENDPOINT6_CONFIG,
  #elif (NUM_ENDPOINTS >= 6)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT7_CONFIG) && NUM_ENDPOINTS >= 7)
  	ENDPOINT7_CONFIG,
  #elif (NUM_ENDPOINTS >= 7)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT8_CONFIG) && NUM_ENDPOINTS >= 8)
  	ENDPOINT8_CONFIG,
  #elif (NUM_ENDPOINTS >= 8)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT9_CONFIG) && NUM_ENDPOINTS >= 9)
  	ENDPOINT9_CONFIG,
  #elif (NUM_ENDPOINTS >= 9)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT10_CONFIG) && NUM_ENDPOINTS >= 10)
  	ENDPOINT10_CONFIG,
  #elif (NUM_ENDPOINTS >= 10)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT11_CONFIG) && NUM_ENDPOINTS >= 11)
  	ENDPOINT11_CONFIG,
  #elif (NUM_ENDPOINTS >= 11)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT12_CONFIG) && NUM_ENDPOINTS >= 12)
  	ENDPOINT12_CONFIG,
  #elif (NUM_ENDPOINTS >= 12)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT13_CONFIG) && NUM_ENDPOINTS >= 13)
  	ENDPOINT13_CONFIG,
  #elif (NUM_ENDPOINTS >= 13)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT14_CONFIG) && NUM_ENDPOINTS >= 14)
  	ENDPOINT14_CONFIG,
  #elif (NUM_ENDPOINTS >= 14)
  	ENDPOINT_UNUSED,
  #endif
  #if (defined(ENDPOINT15_CONFIG) && NUM_ENDPOINTS >= 15)
  	ENDPOINT15_CONFIG,
  #elif (NUM_ENDPOINTS >= 15)
  	ENDPOINT_UNUSED,
  #endif
  };
  
  
  