text: /*
               LUFA Library
       Copyright (C) Dean Camera, 2019.
  
    dean [at] fourwalledcubicle [dot] com
             www.lufa-lib.org
  */
  
  /*
    Copyright 2019  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 BootloaderPrinter.c.
   */
  
  #ifndef _BOOTLOADER_PRINTER_H_
  #define _BOOTLOADER_PRINTER_H_
  
  	/* Includes: */
  		#include <avr/io.h>
  		#include <avr/wdt.h>
  		#include <avr/power.h>
  		#include <avr/interrupt.h>
  		#include <util/delay.h>
  
  		#include "Descriptors.h"
  		#include "BootloaderAPI.h"
  
  		#include <LUFA/Drivers/Board/LEDs.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: */
  		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
  		#define LEDMASK_USB_NOTREADY       LEDS_LED1
  
  		/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
  		#define LEDMASK_USB_ENUMERATING   (LEDS_LED2 | LEDS_LED3)
  
  		/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
  		#define LEDMASK_USB_READY         (LEDS_LED2 | LEDS_LED4)
  
  		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
  		#define LEDMASK_USB_ERROR         (LEDS_LED1 | LEDS_LED3)
  
  		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
  		#define LEDMASK_USB_BUSY           LEDS_LED2
  
  		/** Magic bootloader key to unlock forced application start mode. */
  		#define MAGIC_BOOT_KEY             0xDC42
  
  	/* Type Defines: */
  		#if (FLASHEND > 0xFFFF)
  			typedef uint32_t flashaddr_t;
  		#else
  			typedef uint16_t flashaddr_t;
  		#endif
  
  	/* Enums: */
  		/** Intel HEX parser state machine states. */
  		enum HEX_Parser_States_t
  		{
  			HEX_PARSE_STATE_WAIT_LINE,    /**< Parser is waiting for a HEX Start of Line character. */
  			HEX_PARSE_STATE_BYTE_COUNT,   /**< Parser is waiting for a record byte count. */
  			HEX_PARSE_STATE_ADDRESS_HIGH, /**< Parser is waiting for the MSB of a record address. */
  			HEX_PARSE_STATE_ADDRESS_LOW,  /**< Parser is waiting for the LSB of a record address. */
  			HEX_PARSE_STATE_RECORD_TYPE,  /**< Parser is waiting for the record type. */
  			HEX_PARSE_STATE_READ_DATA,    /**< Parser is waiting for more data in the current record. */
  			HEX_PARSE_STATE_CHECKSUM,     /**< Parser is waiting for the checksum of the current record. */
  		};
  
  		/** Intel HEX record types, used to indicate the type of record contained in a line of a HEX file. */
  		enum HEX_Record_Types_t
  		{
  			HEX_RECORD_TYPE_Data                   = 0, /**< Record contains loadable data. */
  			HEX_RECORD_TYPE_EndOfFile              = 1, /**< End of file record. */
  			HEX_RECORD_TYPE_ExtendedSegmentAddress = 2, /**< Extended segment start record. */
  			HEX_RECORD_TYPE_StartSegmentAddress    = 3, /**< Normal segment start record. */
  			HEX_RECORD_TYPE_ExtendedLinearAddress  = 4, /**< Extended linear address start record. */
  			HEX_RECORD_TYPE_StartLinearAddress     = 5, /**< Linear address start record. */
  		};
  
  	/* Function Prototypes: */
  		static void SetupHardware(void);
  
  		void EVENT_USB_Device_Connect(void);
  		void EVENT_USB_Device_Disconnect(void);
  		void EVENT_USB_Device_ConfigurationChanged(void);
  		void EVENT_USB_Device_ControlRequest(void);
  
  #endif
  
  