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diff --git a/tmk_core/protocol/pjrc/usb.h b/tmk_core/protocol/pjrc/usb.h
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+/* 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.
+ */
+
+#ifndef USB_H
+#define USB_H 1
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+
+
+extern bool remote_wakeup;
+extern bool suspend;
+
+void usb_init(void); // initialize everything
+uint8_t usb_configured(void); // is the USB port configured
+void usb_remote_wakeup(void);
+
+
+#define EP_TYPE_CONTROL 0x00
+#define EP_TYPE_BULK_IN 0x81
+#define EP_TYPE_BULK_OUT 0x80
+#define EP_TYPE_INTERRUPT_IN 0xC1
+#define EP_TYPE_INTERRUPT_OUT 0xC0
+#define EP_TYPE_ISOCHRONOUS_IN 0x41
+#define EP_TYPE_ISOCHRONOUS_OUT 0x40
+
+#define EP_SINGLE_BUFFER 0x02
+#define EP_DOUBLE_BUFFER 0x06
+
+#define EP_SIZE(s) ((s) == 64 ? 0x30 : \
+ ((s) == 32 ? 0x20 : \
+ ((s) == 16 ? 0x10 : \
+ 0x00)))
+
+#if defined (__AVR_AT90USB162__) || defined (__AVR_AT90USB82__)
+# define MAX_ENDPOINT 4
+# define UERST_MASK 0x1E
+#else
+# define MAX_ENDPOINT 6
+# define UERST_MASK 0x7E
+#endif
+
+#define LSB(n) (n & 255)
+#define MSB(n) ((n >> 8) & 255)
+
+#if defined(__AVR_AT90USB162__)
+#define HW_CONFIG()
+#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
+#define USB_CONFIG() (USBCON = (1<<USBE))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_ATmega32U4__)
+#define HW_CONFIG() (UHWCON = 0x01)
+#define PLL_CONFIG() (PLLCSR = 0x12)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB646__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x1A)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#elif defined(__AVR_AT90USB1286__)
+#define HW_CONFIG() (UHWCON = 0x81)
+#define PLL_CONFIG() (PLLCSR = 0x16)
+#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
+#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
+#endif
+
+// standard control endpoint request types
+#define GET_STATUS 0
+#define CLEAR_FEATURE 1
+#define SET_FEATURE 3
+#define SET_ADDRESS 5
+#define GET_DESCRIPTOR 6
+#define GET_CONFIGURATION 8
+#define SET_CONFIGURATION 9
+#define GET_INTERFACE 10
+#define SET_INTERFACE 11
+// HID (human interface device)
+#define HID_GET_REPORT 1
+#define HID_GET_IDLE 2
+#define HID_GET_PROTOCOL 3
+#define HID_SET_REPORT 9
+#define HID_SET_IDLE 10
+#define HID_SET_PROTOCOL 11
+#define HID_REPORT_INPUT 1
+#define HID_REPORT_OUTPUT 2
+#define HID_REPORT_FEATURE 3
+// CDC (communication class device)
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+// HID feature selectors
+#define DEVICE_REMOTE_WAKEUP 1
+#define ENDPOINT_HALT 0
+#define TEST_MODE 2
+
+
+/*------------------------------------------------------------------*
+ * Keyboard descriptor setting
+ *------------------------------------------------------------------*/
+#define KBD_INTERFACE 0
+#define KBD_ENDPOINT 1
+#define KBD_SIZE 8
+#define KBD_BUFFER EP_SINGLE_BUFFER
+#define KBD_REPORT_KEYS (KBD_SIZE - 2)
+
+// secondary keyboard
+#ifdef NKRO_ENABLE
+#define KBD2_INTERFACE 4
+#define KBD2_ENDPOINT 5
+#define KBD2_SIZE 16
+#define KBD2_BUFFER EP_DOUBLE_BUFFER
+#define KBD2_REPORT_KEYS (KBD2_SIZE - 1)
+#endif
+
+#endif