added protocol stack: pjrc, vusb

1 files changed, 978 insertions, 0 deletions

diff --git a/pjrc/usb.c b/pjrc/usb.c
new file mode 100755
index 0000000000..845b00bea7
--- /dev/null
+++ b/pjrc/usb.c
@@ -0,0 +1,978 @@
+/* USB Keyboard Plus Debug Channel Example for Teensy USB Development Board
+ * http://www.pjrc.com/teensy/usb_keyboard.html
+ * Copyright (c) 2009 PJRC.COM, LLC
+ * 
+ * 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:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * 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.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include "usb.h"
+#include "usb_keyboard.h"
+#include "usb_mouse.h"
+#include "usb_debug.h"
+#include "usb_extra.h"
+#include "print.h"
+#include "util.h"
+
+
+/**************************************************************************
+ *
+ *  Configurable Options
+ *
+ **************************************************************************/
+
+// You can change these to give your code its own name.
+#ifndef MANUFACTURER
+#   define STR_MANUFACTURER	L"t.m.k."
+#else
+#   define STR_MANUFACTURER	LSTR(MANUFACTURER)
+#endif
+#ifndef PRODUCT
+#   define STR_PRODUCT		L"t.m.k. keyboard"
+#else
+#   define STR_PRODUCT		LSTR(PRODUCT)
+#endif
+
+
+// Mac OS-X and Linux automatically load the correct drivers.  On
+// Windows, even though the driver is supplied by Microsoft, an
+// INF file is needed to load the driver.  These numbers need to
+// match the INF file.
+#ifndef VENDOR_ID
+#   define VENDOR_ID		0xFEED
+#endif
+
+#ifndef PRODUCT_ID
+#   define PRODUCT_ID		0xBABE
+#endif
+
+
+// USB devices are supposed to implment a halt feature, which is
+// rarely (if ever) used.  If you comment this line out, the halt
+// code will be removed, saving 102 bytes of space (gcc 4.3.0).
+// This is not strictly USB compliant, but works with all major
+// operating systems.
+#define SUPPORT_ENDPOINT_HALT
+
+
+
+/**************************************************************************
+ *
+ *  Endpoint Buffer Configuration
+ *
+ **************************************************************************/
+
+#define ENDPOINT0_SIZE		32
+
+bool remote_wakeup = false;
+bool suspend = false;
+
+// 0:control endpoint is enabled automatically by controller.
+static const uint8_t PROGMEM endpoint_config_table[] = {
+	// enable, UECFG0X(type, direction), UECFG1X(size, bank, allocation)
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(KBD_SIZE)      | KBD_BUFFER,      // 1
+#ifdef USB_MOUSE_ENABLE
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(MOUSE_SIZE)    | MOUSE_BUFFER,    // 2
+#else
+        0,                                                                  // 2
+#endif
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(DEBUG_TX_SIZE) | DEBUG_TX_BUFFER, // 3
+#ifdef USB_EXTRA_ENABLE
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(EXTRA_SIZE)    | EXTRA_BUFFER,    // 4
+#else
+        0,                                                                  // 4
+#endif
+#ifdef USB_NKRO_ENABLE
+	1, EP_TYPE_INTERRUPT_IN,  EP_SIZE(KBD2_SIZE)     | KBD2_BUFFER,     // 5
+#else
+        0,                                                                  // 5
+#endif
+        0,                                                                  // 6
+};
+
+
+/**************************************************************************
+ *
+ *  Descriptor Data
+ *
+ **************************************************************************/
+
+// Descriptors are the data that your computer reads when it auto-detects
+// this USB device (called "enumeration" in USB lingo).  The most commonly
+// changed items are editable at the top of this file.  Changing things
+// in here should only be done by those who've read chapter 9 of the USB
+// spec and relevant portions of any USB class specifications!
+
+
+static uint8_t PROGMEM device_descriptor[] = {
+	18,					// bLength
+	1,					// bDescriptorType
+	0x00, 0x02,				// bcdUSB
+	0,					// bDeviceClass
+	0,					// bDeviceSubClass
+	0,					// bDeviceProtocol
+	ENDPOINT0_SIZE,				// bMaxPacketSize0
+	LSB(VENDOR_ID), MSB(VENDOR_ID),		// idVendor
+	LSB(PRODUCT_ID), MSB(PRODUCT_ID),	// idProduct
+	0x00, 0x01,				// bcdDevice
+	1,					// iManufacturer
+	2,					// iProduct
+	0,					// iSerialNumber
+	1					// bNumConfigurations
+};
+
+// Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
+static uint8_t PROGMEM keyboard_hid_report_desc[] = {
+        0x05, 0x01,          // Usage Page (Generic Desktop),
+        0x09, 0x06,          // Usage (Keyboard),
+        0xA1, 0x01,          // Collection (Application),
+        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), ;Modifier byte
+        0x95, 0x01,          //   Report Count (1),
+        0x75, 0x08,          //   Report Size (8),
+        0x81, 0x03,          //   Input (Constant),                 ;Reserved byte
+        0x95, 0x05,          //   Report Count (5),
+        0x75, 0x01,          //   Report Size (1),
+        0x05, 0x08,          //   Usage Page (LEDs),
+        0x19, 0x01,          //   Usage Minimum (1),
+        0x29, 0x05,          //   Usage Maximum (5),
+        0x91, 0x02,          //   Output (Data, Variable, Absolute), ;LED report
+        0x95, 0x01,          //   Report Count (1),
+        0x75, 0x03,          //   Report Size (3),
+        0x91, 0x03,          //   Output (Constant),                 ;LED report padding
+        0x95, KBD_REPORT_KEYS,    //   Report Count (),
+        0x75, 0x08,          //   Report Size (8),
+        0x15, 0x00,          //   Logical Minimum (0),
+        0x25, 0xFF,          //   Logical Maximum(255),
+        0x05, 0x07,          //   Usage Page (Key Codes),
+        0x19, 0x00,          //   Usage Minimum (0),
+        0x29, 0xFF,          //   Usage Maximum (255),
+        0x81, 0x00,          //   Input (Data, Array),
+        0xc0                 // End Collection
+};
+#ifdef USB_NKRO_ENABLE
+static uint8_t PROGMEM keyboard2_hid_report_desc[] = {
+        0x05, 0x01,                     // Usage Page (Generic Desktop),
+        0x09, 0x06,                     // Usage (Keyboard),
+        0xA1, 0x01,                     // Collection (Application),
+        // bitmap of modifiers
+        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), ;Modifier byte
+        // LED output report
+        0x95, 0x05,                     //   Report Count (5),
+        0x75, 0x01,                     //   Report Size (1),
+        0x05, 0x08,                     //   Usage Page (LEDs),
+        0x19, 0x01,                     //   Usage Minimum (1),
+        0x29, 0x05,                     //   Usage Maximum (5),
+        0x91, 0x02,                     //   Output (Data, Variable, Absolute),
+        0x95, 0x01,                     //   Report Count (1),
+        0x75, 0x03,                     //   Report Size (3),
+        0x91, 0x03,                     //   Output (Constant),
+        // bitmap of keys
+        0x95, KBD2_REPORT_KEYS*8,       //   Report Count (),
+        0x75, 0x01,                     //   Report Size (1),
+        0x15, 0x00,                     //   Logical Minimum (0),
+        0x25, 0x01,                     //   Logical Maximum(1),
+        0x05, 0x07,                     //   Usage Page (Key Codes),
+        0x19, 0x00,                     //   Usage Minimum (0),
+        0x29, KBD2_REPORT_KEYS*8-1,     //   Usage Maximum (),
+        0x81, 0x02,                     //   Input (Data, Variable, Absolute),
+        0xc0                            // End Collection
+};
+#endif
+
+#ifdef USB_MOUSE_ENABLE
+// Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
+// http://www.microchip.com/forums/tm.aspx?high=&m=391435&mpage=1#391521
+// http://www.keil.com/forum/15671/
+// http://www.microsoft.com/whdc/device/input/wheel.mspx
+static uint8_t PROGMEM mouse_hid_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)
+    0xa1, 0x00,        //     COLLECTION (Physical)
+                       // ------------------------------  Buttons
+    0x05, 0x09,        //       USAGE_PAGE (Button)
+    0x19, 0x01,        //       USAGE_MINIMUM (Button 1)
+    0x29, 0x05,        //       USAGE_MAXIMUM (Button 5)
+    0x15, 0x00,        //       LOGICAL_MINIMUM (0)
+    0x25, 0x01,        //       LOGICAL_MAXIMUM (1)
+    0x75, 0x01,        //       REPORT_SIZE (1)
+    0x95, 0x05,        //       REPORT_COUNT (5)
+    0x81, 0x02,        //       INPUT (Data,Var,Abs)
+                       // ------------------------------  Padding
+    0x75, 0x03,        //       REPORT_SIZE (3)
+    0x95, 0x01,        //       REPORT_COUNT (1)
+    0x81, 0x03,        //       INPUT (Cnst,Var,Abs)
+                       // ------------------------------  X,Y position
+    0x05, 0x01,        //       USAGE_PAGE (Generic Desktop)
+    0x09, 0x30,        //       USAGE (X)
+    0x09, 0x31,        //       USAGE (Y)
+    0x15, 0x81,        //       LOGICAL_MINIMUM (-127)
+    0x25, 0x7f,        //       LOGICAL_MAXIMUM (127)
+    0x75, 0x08,        //       REPORT_SIZE (8)
+    0x95, 0x02,        //       REPORT_COUNT (2)
+    0x81, 0x06,        //       INPUT (Data,Var,Rel)
+    0xa1, 0x02,        //       COLLECTION (Logical)
+                       // ------------------------------  Vertical wheel res multiplier
+    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)
+                       // ------------------------------  Vertical wheel
+    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
+    0xa1, 0x02,        //       COLLECTION (Logical)
+                       // ------------------------------  Horizontal wheel res multiplier
+    0x09, 0x48,        //         USAGE (Resolution Multiplier)
+    0xb4,              //         POP
+    0xb1, 0x02,        //         FEATURE (Data,Var,Abs)
+                       // ------------------------------  Padding for Feature report
+    0x35, 0x00,        //         PHYSICAL_MINIMUM (0)        - reset physical
+    0x45, 0x00,        //         PHYSICAL_MAXIMUM (0)
+    0x75, 0x04,        //         REPORT_SIZE (4)
+    0xb1, 0x03,        //         FEATURE (Cnst,Var,Abs)
+                       // ------------------------------  Horizontal wheel
+    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
+    0xc0,              //     END_COLLECTION
+    0xc0,              //   END_COLLECTION
+    0xc0               // END_COLLECTION
+};
+#endif
+
+static uint8_t PROGMEM debug_hid_report_desc[] = {
+	0x06, 0x31, 0xFF,			// Usage Page 0xFF31 (vendor defined)
+	0x09, 0x74,				// Usage 0x74
+	0xA1, 0x53,				// Collection 0x53
+	0x75, 0x08,				// report size = 8 bits
+	0x15, 0x00,				// logical minimum = 0
+	0x26, 0xFF, 0x00,			// logical maximum = 255
+	0x95, DEBUG_TX_SIZE,			// report count
+	0x09, 0x75,				// usage
+	0x81, 0x02,				// Input (array)
+	0xC0					// end collection
+};
+
+#ifdef USB_EXTRA_ENABLE
+// audio controls & system controls
+// http://www.microsoft.com/whdc/archive/w2kbd.mspx
+static uint8_t PROGMEM extra_hid_report_desc[] = {
+    0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)
+    0x09, 0x01,                    // USAGE (Consumer Control)
+    0xa1, 0x01,                    // COLLECTION (Application)
+    0x85, 0x01,                    //   REPORT_ID (1)
+    0x09, 0xe9,                    //   USAGE (Volume Up)
+    0x09, 0xea,                    //   USAGE (Volume Down)
+    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
+    0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
+    0x75, 0x01,                    //   REPORT_SIZE (1)
+    0x95, 0x02,                    //   REPORT_COUNT (2)
+    0x81, 0x02,                    //   INPUT (Data,Var,Abs)
+    0x09, 0xe2,                    //   USAGE (Mute)
+    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
+    0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
+    0x75, 0x01,                    //   REPORT_SIZE (1)
+    0x95, 0x01,                    //   REPORT_COUNT (1)
+    0x81, 0x06,                    //   INPUT (Data,Var,Rel)
+    0x95, 0x05,                    //   REPORT_COUNT (5)
+    0x81, 0x07,                    //   INPUT (Cnst,Var,Abs)
+    0xc0,                          // END_COLLECTION
+
+    0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
+    0x09, 0x80,                    // USAGE (System Control)
+    0xa1, 0x01,                    // COLLECTION (Application)
+    0x85, 0x02,                    //   REPORT_ID (2)
+    0x19, 0x81,                    //   USAGE_MINIMUM (System Power Down)
+    0x29, 0x83,                    //   USAGE_MAXIMUM (System Wake Up)
+    0x95, 0x03,                    //   REPORT_COUNT (3)
+    0x81, 0x06,                    //   INPUT (Data,Var,Rel)
+    0x95, 0x05,                    //   REPORT_COUNT (5)
+    0x81, 0x07,                    //   INPUT (Cnst,Var,Rel)
+    0xc0                           // END_COLLECTION
+};
+#endif
+
+#define KBD_HID_DESC_NUM                0
+#define KBD_HID_DESC_OFFSET             (9+(9+9+7)*KBD_HID_DESC_NUM+9)
+
+#ifdef USB_MOUSE_ENABLE
+#   define MOUSE_HID_DESC_NUM           (KBD_HID_DESC_NUM + 1)
+#   define MOUSE_HID_DESC_OFFSET        (9+(9+9+7)*MOUSE_HID_DESC_NUM+9)
+#else
+#   define MOUSE_HID_DESC_NUM           (KBD_HID_DESC_NUM + 0)
+#endif
+
+#define DEBUG_HID_DESC_NUM              (MOUSE_HID_DESC_NUM + 1)
+#define DEBUG_HID_DESC_OFFSET           (9+(9+9+7)*DEBUG_HID_DESC_NUM+9)
+
+#ifdef USB_EXTRA_ENABLE
+#   define EXTRA_HID_DESC_NUM           (DEBUG_HID_DESC_NUM + 1)
+#   define EXTRA_HID_DESC_OFFSET        (9+(9+9+7)*EXTRA_HID_DESC_NUM+9)
+#else
+#   define EXTRA_HID_DESC_NUM           (DEBUG_HID_DESC_NUM + 0)
+#endif
+
+#ifdef USB_NKRO_ENABLE
+#   define KBD2_HID_DESC_NUM            (EXTRA_HID_DESC_NUM + 1)
+#   define KBD2_HID_DESC_OFFSET         (9+(9+9+7)*EXTRA_HID_DESC_NUM+9)
+#else
+#   define KBD2_HID_DESC_NUM            (EXTRA_HID_DESC_NUM + 0)
+#endif
+
+#define NUM_INTERFACES                  (KBD2_HID_DESC_NUM + 1)
+#define CONFIG1_DESC_SIZE               (9+(9+9+7)*NUM_INTERFACES)
+static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
+	// configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
+	9, 					// bLength;
+	2,					// bDescriptorType;
+	LSB(CONFIG1_DESC_SIZE),			// wTotalLength
+	MSB(CONFIG1_DESC_SIZE),
+	NUM_INTERFACES,				// bNumInterfaces
+	1,					// bConfigurationValue
+	0,					// iConfiguration
+	0xA0,					// bmAttributes
+	50,					// bMaxPower
+
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	KBD_INTERFACE,				// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x01,					// bInterfaceSubClass (0x01 = Boot)
+	0x01,					// bInterfaceProtocol (0x01 = Keyboard)
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(keyboard_hid_report_desc),     	// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	KBD_ENDPOINT | 0x80,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	KBD_SIZE, 0,				// wMaxPacketSize
+	10,					// bInterval
+
+#ifdef USB_MOUSE_ENABLE
+	// 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)
+        // ThinkPad T23 BIOS doesn't work with boot mouse.
+	0x00,					// bInterfaceSubClass (0x01 = Boot)
+	0x00,					// bInterfaceProtocol (0x02 = Mouse)
+/*
+	0x01,					// bInterfaceSubClass (0x01 = Boot)
+	0x02,					// bInterfaceProtocol (0x02 = Mouse)
+*/
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(mouse_hid_report_desc),		// wDescriptorLength
+	0,
+	// 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
+	1,					// bInterval
+#endif
+
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	DEBUG_INTERFACE,			// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x00,					// bInterfaceSubClass
+	0x00,					// bInterfaceProtocol
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(debug_hid_report_desc),		// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	DEBUG_TX_ENDPOINT | 0x80,		// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	DEBUG_TX_SIZE, 0,			// wMaxPacketSize
+	1,					// bInterval
+
+#ifdef USB_EXTRA_ENABLE
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	EXTRA_INTERFACE,			// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x00,					// bInterfaceSubClass
+	0x00,					// bInterfaceProtocol
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(extra_hid_report_desc),		// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	EXTRA_ENDPOINT | 0x80,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	EXTRA_SIZE, 0,				// wMaxPacketSize
+	10,					// bInterval
+#endif
+
+#ifdef USB_NKRO_ENABLE
+	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+	9,					// bLength
+	4,					// bDescriptorType
+	KBD2_INTERFACE,				// bInterfaceNumber
+	0,					// bAlternateSetting
+	1,					// bNumEndpoints
+	0x03,					// bInterfaceClass (0x03 = HID)
+	0x00,					// bInterfaceSubClass (0x01 = Boot)
+	0x00,					// bInterfaceProtocol (0x01 = Keyboard)
+	0,					// iInterface
+	// HID descriptor, HID 1.11 spec, section 6.2.1
+	9,					// bLength
+	0x21,					// bDescriptorType
+	0x11, 0x01,				// bcdHID
+	0,					// bCountryCode
+	1,					// bNumDescriptors
+	0x22,					// bDescriptorType
+	sizeof(keyboard2_hid_report_desc),     	// wDescriptorLength
+	0,
+	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+	7,					// bLength
+	5,					// bDescriptorType
+	KBD2_ENDPOINT | 0x80,			// bEndpointAddress
+	0x03,					// bmAttributes (0x03=intr)
+	KBD2_SIZE, 0,				// wMaxPacketSize
+	1,					// bInterval
+#endif
+};
+
+// If you're desperate for a little extra code memory, these strings
+// can be completely removed if iManufacturer, iProduct, iSerialNumber
+// in the device desciptor are changed to zeros.
+struct usb_string_descriptor_struct {
+	uint8_t bLength;
+	uint8_t bDescriptorType;
+	int16_t wString[];
+};
+static struct usb_string_descriptor_struct PROGMEM string0 = {
+	4,
+	3,
+	{0x0409}
+};
+static struct usb_string_descriptor_struct PROGMEM string1 = {
+	sizeof(STR_MANUFACTURER),
+	3,
+	STR_MANUFACTURER
+};
+static struct usb_string_descriptor_struct PROGMEM string2 = {
+	sizeof(STR_PRODUCT),
+	3,
+	STR_PRODUCT
+};
+
+// This table defines which descriptor data is sent for each specific
+// request from the host (in wValue and wIndex).
+static struct descriptor_list_struct {
+	uint16_t	wValue;     // descriptor type
+	uint16_t	wIndex;
+	const uint8_t	*addr;
+	uint8_t		length;
+} PROGMEM descriptor_list[] = {
+        // DEVICE descriptor
+	{0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
+        // CONFIGURATION descriptor
+	{0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
+        // HID/REPORT descriptors
+	{0x2100, KBD_INTERFACE, config1_descriptor+KBD_HID_DESC_OFFSET, 9},
+	{0x2200, KBD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
+#ifdef USB_MOUSE_ENABLE
+	{0x2100, MOUSE_INTERFACE, config1_descriptor+MOUSE_HID_DESC_OFFSET, 9},
+	{0x2200, MOUSE_INTERFACE, mouse_hid_report_desc, sizeof(mouse_hid_report_desc)},
+#endif
+	{0x2100, DEBUG_INTERFACE, config1_descriptor+DEBUG_HID_DESC_OFFSET, 9},
+	{0x2200, DEBUG_INTERFACE, debug_hid_report_desc, sizeof(debug_hid_report_desc)},
+#ifdef USB_EXTRA_ENABLE
+	{0x2100, EXTRA_INTERFACE, config1_descriptor+EXTRA_HID_DESC_OFFSET, 9},
+	{0x2200, EXTRA_INTERFACE, extra_hid_report_desc, sizeof(extra_hid_report_desc)},
+#endif
+#ifdef USB_NKRO_ENABLE
+	{0x2100, KBD2_INTERFACE, config1_descriptor+KBD2_HID_DESC_OFFSET, 9},
+	{0x2200, KBD2_INTERFACE, keyboard2_hid_report_desc, sizeof(keyboard2_hid_report_desc)},
+#endif
+        // STRING descriptors
+	{0x0300, 0x0000, (const uint8_t *)&string0, 4},
+	{0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
+	{0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)}
+};
+#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
+
+
+/**************************************************************************
+ *
+ *  Variables - these are the only non-stack RAM usage
+ *
+ **************************************************************************/
+
+// zero when we are not configured, non-zero when enumerated
+static volatile uint8_t usb_configuration=0;
+
+
+/**************************************************************************
+ *
+ *  Public Functions - these are the API intended for the user
+ *
+ **************************************************************************/
+
+
+// initialize USB
+void usb_init(void)
+{
+	HW_CONFIG();
+	USB_FREEZE();				// enable USB
+	PLL_CONFIG();				// config PLL
+        while (!(PLLCSR & (1<<PLOCK))) ;	// wait for PLL lock
+        USB_CONFIG();				// start USB clock
+        UDCON = 0;				// enable attach resistor
+	usb_configuration = 0;
+        UDIEN = (1<<EORSTE)|(1<<SOFE)|(1<<SUSPE);
+	sei();
+}
+
+// return 0 if the USB is not configured, or the configuration
+// number selected by the HOST
+uint8_t usb_configured(void)
+{
+	return usb_configuration && !suspend;
+}
+
+void usb_remote_wakeup(void)
+{
+    UDCON |= (1<<RMWKUP);
+}
+
+
+
+/**************************************************************************
+ *
+ *  Private Functions - not intended for general user consumption....
+ *
+ **************************************************************************/
+
+
+
+// USB Device Interrupt - handle all device-level events
+// the transmit buffer flushing is triggered by the start of frame
+//
+ISR(USB_GEN_vect)
+{
+	uint8_t intbits, t, i;
+	static uint8_t div4=0;
+
+        intbits = UDINT;
+        UDINT = 0;
+        if (intbits & (1<<SUSPI)) {
+            suspend = true;
+        } else {
+            suspend = false;
+        }
+        if (intbits & (1<<EORSTI)) {
+		UENUM = 0;
+		UECONX = 1;
+		UECFG0X = EP_TYPE_CONTROL;
+		UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
+		UEIENX = (1<<RXSTPE);
+		usb_configuration = 0;
+        }
+	if ((intbits & (1<<SOFI)) && usb_configuration) {
+		t = debug_flush_timer;
+		if (t) {
+			debug_flush_timer = -- t;
+			if (!t) {
+				UENUM = DEBUG_TX_ENDPOINT;
+				while ((UEINTX & (1<<RWAL))) {
+					UEDATX = 0;
+				}
+				UEINTX = 0x3A;
+			}
+		}
+		if (usb_keyboard_idle_config && (++div4 & 3) == 0) {
+			UENUM = KBD_ENDPOINT;
+			if (UEINTX & (1<<RWAL)) {
+				usb_keyboard_idle_count++;
+				if (usb_keyboard_idle_count == usb_keyboard_idle_config) {
+					usb_keyboard_idle_count = 0;
+					UEDATX = usb_keyboard_mods;
+					UEDATX = 0;
+					for (i=0; i<6; i++) {
+						UEDATX = usb_keyboard_keys[i];
+					}
+					UEINTX = 0x3A;
+				}
+			}
+		}
+	}
+}
+
+
+
+// Misc functions to wait for ready and send/receive packets
+static inline void usb_wait_in_ready(void)
+{
+	while (!(UEINTX & (1<<TXINI))) ;
+}
+static inline void usb_send_in(void)
+{
+	UEINTX = ~(1<<TXINI);
+}
+static inline void usb_wait_receive_out(void)
+{
+	while (!(UEINTX & (1<<RXOUTI))) ;
+}
+static inline void usb_ack_out(void)
+{
+	UEINTX = ~(1<<RXOUTI);
+}
+
+
+
+// USB Endpoint Interrupt - endpoint 0 is handled here.  The
+// other endpoints are manipulated by the user-callable
+// functions, and the start-of-frame interrupt.
+//
+ISR(USB_COM_vect)
+{
+        uint8_t intbits;
+	const uint8_t *list;
+        const uint8_t *cfg;
+	uint8_t i, n, len, en;
+	uint8_t bmRequestType;
+	uint8_t bRequest;
+	uint16_t wValue;
+	uint16_t wIndex;
+	uint16_t wLength;
+	uint16_t desc_val;
+	const uint8_t *desc_addr;
+	uint8_t	desc_length;
+
+        UENUM = 0;
+	intbits = UEINTX;
+        if (intbits & (1<<RXSTPI)) {
+                bmRequestType = UEDATX;
+                bRequest = UEDATX;
+                wValue = UEDATX;
+                wValue |= (UEDATX << 8);
+                wIndex = UEDATX;
+                wIndex |= (UEDATX << 8);
+                wLength = UEDATX;
+                wLength |= (UEDATX << 8);
+                UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
+                if (bRequest == GET_DESCRIPTOR) {
+			list = (const uint8_t *)descriptor_list;
+			for (i=0; ; i++) {
+				if (i >= NUM_DESC_LIST) {
+					UECONX = (1<<STALLRQ)|(1<<EPEN);  //stall
+					return;
+				}
+				desc_val = pgm_read_word(list);
+				if (desc_val != wValue) {
+					list += sizeof(struct descriptor_list_struct);
+					continue;
+				}
+				list += 2;
+				desc_val = pgm_read_word(list);
+				if (desc_val != wIndex) {
+					list += sizeof(struct descriptor_list_struct)-2;
+					continue;
+				}
+				list += 2;
+				desc_addr = (const uint8_t *)pgm_read_word(list);
+				list += 2;
+				desc_length = pgm_read_byte(list);
+				break;
+			}
+			len = (wLength < 256) ? wLength : 255;
+			if (len > desc_length) len = desc_length;
+			do {
+				// wait for host ready for IN packet
+				do {
+					i = UEINTX;
+				} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+				if (i & (1<<RXOUTI)) return;	// abort
+				// send IN packet
+				n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+				for (i = n; i; i--) {
+					UEDATX = pgm_read_byte(desc_addr++);
+				}
+				len -= n;
+				usb_send_in();
+			} while (len || n == ENDPOINT0_SIZE);
+			return;
+                }
+		if (bRequest == SET_ADDRESS) {
+			usb_send_in();
+			usb_wait_in_ready();
+			UDADDR = wValue | (1<<ADDEN);
+			return;
+		}
+		if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
+			usb_configuration = wValue;
+			usb_send_in();
+			cfg = endpoint_config_table;
+			for (i=1; i<=6; i++) {
+				UENUM = i;
+				en = pgm_read_byte(cfg++);
+                                if (en) {
+                                    UECONX = (1<<EPEN);
+                                    UECFG0X = pgm_read_byte(cfg++);
+                                    UECFG1X = pgm_read_byte(cfg++);
+                                } else {
+                                    UECONX = 0;
+				}
+			}
+        		UERST = 0x7E;
+        		UERST = 0;
+			return;
+		}
+		if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
+			usb_wait_in_ready();
+			UEDATX = usb_configuration;
+			usb_send_in();
+			return;
+		}
+
+		if (bRequest == GET_STATUS) {
+			usb_wait_in_ready();
+			i = 0;
+			#ifdef SUPPORT_ENDPOINT_HALT
+			if (bmRequestType == 0x82) {
+				UENUM = wIndex;
+				if (UECONX & (1<<STALLRQ)) i = 1;
+				UENUM = 0;
+			}
+			#endif
+			UEDATX = i;
+			UEDATX = 0;
+			usb_send_in();
+			return;
+		}
+		if (bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE) {
+#ifdef SUPPORT_ENDPOINT_HALT
+		    if (bmRequestType == 0x02 && wValue == ENDPOINT_HALT) {
+			i = wIndex & 0x7F;
+			if (i >= 1 && i <= MAX_ENDPOINT) {
+				usb_send_in();
+				UENUM = i;
+				if (bRequest == SET_FEATURE) {
+					UECONX = (1<<STALLRQ)|(1<<EPEN);
+				} else {
+					UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
+					UERST = (1 << i);
+					UERST = 0;
+				}
+				return;
+			}
+                    }
+#endif
+                    if (bmRequestType == 0x00 && wValue == DEVICE_REMOTE_WAKEUP) {
+                        if (bRequest == SET_FEATURE) {
+                            remote_wakeup = true;   
+                        } else {
+                            remote_wakeup = false;
+                        }
+                        usb_send_in();
+                        return;
+                    }
+		}
+		if (wIndex == KBD_INTERFACE) {
+			if (bmRequestType == 0xA1) {
+				if (bRequest == HID_GET_REPORT) {
+					usb_wait_in_ready();
+					UEDATX = usb_keyboard_mods;
+					UEDATX = 0;
+					for (i=0; i<6; i++) {
+						UEDATX = usb_keyboard_keys[i];
+					}
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_GET_IDLE) {
+					usb_wait_in_ready();
+					UEDATX = usb_keyboard_idle_config;
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_GET_PROTOCOL) {
+					usb_wait_in_ready();
+					UEDATX = usb_keyboard_protocol;
+					usb_send_in();
+					return;
+				}
+			}
+			if (bmRequestType == 0x21) {
+				if (bRequest == HID_SET_REPORT) {
+					usb_wait_receive_out();
+					usb_keyboard_leds = UEDATX;
+					usb_ack_out();
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_SET_IDLE) {
+					usb_keyboard_idle_config = (wValue >> 8);
+					usb_keyboard_idle_count = 0;
+					//usb_wait_in_ready();
+					usb_send_in();
+					return;
+				}
+				if (bRequest == HID_SET_PROTOCOL) {
+					usb_keyboard_protocol = wValue;
+					//usb_wait_in_ready();
+					usb_send_in();
+					return;
+				}
+			}
+		}
+#ifdef USB_MOUSE_ENABLE
+		if (wIndex == MOUSE_INTERFACE) {
+			if (bmRequestType == 0xA1) {
+				if (bRequest == HID_GET_REPORT) {
+                                    if (wValue == HID_REPORT_INPUT) {
+					usb_wait_in_ready();
+					UEDATX = 0;
+					UEDATX = 0;
+					UEDATX = 0;
+					UEDATX = 0;
+					usb_send_in();
+					return;
+                                    }
+                                    if (wValue == HID_REPORT_FEATURE) {
+					usb_wait_in_ready();
+					UEDATX = 0x05;
+					usb_send_in();
+					return;
+                                    }
+				}
+				if (bRequest == HID_GET_PROTOCOL) {
+					usb_wait_in_ready();
+					UEDATX = usb_mouse_protocol;
+					usb_send_in();
+					return;
+				}
+			}
+			if (bmRequestType == 0x21) {
+				if (bRequest == HID_SET_PROTOCOL) {
+					usb_mouse_protocol = wValue;
+					usb_send_in();
+					return;
+				}
+			}
+		}
+#endif
+		if (wIndex == DEBUG_INTERFACE) {
+			if (bRequest == HID_GET_REPORT && bmRequestType == 0xA1) {
+				len = wLength;
+				do {
+					// wait for host ready for IN packet
+					do {
+						i = UEINTX;
+					} while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+					if (i & (1<<RXOUTI)) return;	// abort
+					// send IN packet
+					n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+					for (i = n; i; i--) {
+						UEDATX = 0;
+					}
+					len -= n;
+					usb_send_in();
+				} while (len || n == ENDPOINT0_SIZE);
+				return;
+			}
+		}
+	}
+	UECONX = (1<<STALLRQ) | (1<<EPEN);	// stall
+}