/* 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_DOUBLE_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