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			323 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|              LUFA Library
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|      Copyright (C) Dean Camera, 2010.
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|               
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|   dean [at] fourwalledcubicle [dot] com
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|       www.fourwalledcubicle.com
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| */
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| 
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| /*
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|   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
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| 
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|   Permission to use, copy, modify, distribute, and sell this 
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|   software and its documentation for any purpose is hereby granted
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|   without fee, provided that the above copyright notice appear in 
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|   all copies and that both that the copyright notice and this
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|   permission notice and warranty disclaimer appear in supporting 
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|   documentation, and that the name of the author not be used in 
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|   advertising or publicity pertaining to distribution of the 
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|   software without specific, written prior permission.
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| 
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|   The author disclaim all warranties with regard to this
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|   software, including all implied warranties of merchantability
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|   and fitness.  In no event shall the author be liable for any
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|   special, indirect or consequential damages or any damages
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|   whatsoever resulting from loss of use, data or profits, whether
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|   in an action of contract, negligence or other tortious action,
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|   arising out of or in connection with the use or performance of
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|   this software.
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| */
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| 
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| /** \file
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|  *  \brief Common definitions and declarations for the library USB Mass Storage Class driver.
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|  *
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|  *  Common definitions and declarations for the library USB Mass Storage Class driver.
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|  *
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|  *  \note This file should not be included directly. It is automatically included as needed by the class driver
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|  *        dispatch header located in LUFA/Drivers/USB/Class/MassStorage.h.
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|  */
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| 
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| /** \ingroup Group_USBClassMS
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|  *  @defgroup Group_USBClassMSCommon  Common Class Definitions
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|  *
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|  *  \section Module Description
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|  *  Constants, Types and Enum definitions that are common to both Device and Host modes for the USB
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|  *  Mass Storage Class.
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|  *
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|  *  @{
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|  */
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| 
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| #ifndef _MS_CLASS_COMMON_H_
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| #define _MS_CLASS_COMMON_H_
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| 
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| 	/* Includes: */
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| 		#include "../../USB.h"
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| 
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| 		#include <string.h>
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| 
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| 	/* Enable C linkage for C++ Compilers: */
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| 		#if defined(__cplusplus)
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| 			extern "C" {
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| 		#endif
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| 
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| 	/* Preprocessor Checks: */
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| 		#if !defined(__INCLUDE_FROM_MS_DRIVER)
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| 			#error Do not include this file directly. Include LUFA/Drivers/Class/MassStorage.h instead.
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| 		#endif
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| 		
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| 	/* Macros: */
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| 		/** Mass Storage class-specific request to reset the Mass Storage interface, ready for the next command. */
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| 		#define REQ_MassStorageReset       0xFF
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| 
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| 		/** Mass Storage class-specific request to retrieve the total number of Logical Units (drives) in the SCSI device. */
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| 		#define REQ_GetMaxLUN              0xFE
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| 		
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| 		/** Magic signature for a Command Block Wrapper used in the Mass Storage Bulk-Only transport protocol. */
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| 		#define MS_CBW_SIGNATURE           0x43425355UL
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| 
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| 		/** Magic signature for a Command Status Wrapper used in the Mass Storage Bulk-Only transport protocol. */
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| 		#define MS_CSW_SIGNATURE           0x53425355UL
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| 		
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| 		/** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from host-to-device. */
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| 		#define MS_COMMAND_DIR_DATA_OUT    (0 << 7)
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| 
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| 		/** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from device-to-host. */
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| 		#define MS_COMMAND_DIR_DATA_IN     (1 << 7)
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| 
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| 		/** SCSI Command Code for an INQUIRY command. */
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| 		#define SCSI_CMD_INQUIRY                               0x12
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| 
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| 		/** SCSI Command Code for a REQUEST SENSE command. */
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| 		#define SCSI_CMD_REQUEST_SENSE                         0x03
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| 
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| 		/** SCSI Command Code for a TEST UNIT READY command. */
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| 		#define SCSI_CMD_TEST_UNIT_READY                       0x00
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| 
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| 		/** SCSI Command Code for a READ CAPACITY (10) command. */
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| 		#define SCSI_CMD_READ_CAPACITY_10                      0x25
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| 
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| 		/** SCSI Command Code for a SEND DIAGNOSTIC command. */
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| 		#define SCSI_CMD_SEND_DIAGNOSTIC                       0x1D
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| 
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| 		/** SCSI Command Code for a PREVENT ALLOW MEDIUM REMOVAL command. */
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| 		#define SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL          0x1E
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| 
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| 		/** SCSI Command Code for a WRITE (10) command. */
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| 		#define SCSI_CMD_WRITE_10                              0x2A
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| 
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| 		/** SCSI Command Code for a READ (10) command. */
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| 		#define SCSI_CMD_READ_10                               0x28
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| 
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| 		/** SCSI Command Code for a WRITE (6) command. */
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| 		#define SCSI_CMD_WRITE_6                               0x0A
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| 
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| 		/** SCSI Command Code for a READ (6) command. */
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| 		#define SCSI_CMD_READ_6                                0x08
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| 
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| 		/** SCSI Command Code for a VERIFY (10) command. */
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| 		#define SCSI_CMD_VERIFY_10                             0x2F
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| 
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| 		/** SCSI Command Code for a MODE SENSE (6) command. */
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| 		#define SCSI_CMD_MODE_SENSE_6                          0x1A
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| 
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| 		/** SCSI Command Code for a MODE SENSE (10) command. */
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| 		#define SCSI_CMD_MODE_SENSE_10                         0x5A
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| 
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| 		/** SCSI Sense Code to indicate no error has occurred. */
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| 		#define SCSI_SENSE_KEY_GOOD                            0x00
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| 
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| 		/** SCSI Sense Code to indicate that the device has recovered from an error. */
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| 		#define SCSI_SENSE_KEY_RECOVERED_ERROR                 0x01
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| 
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| 		/** SCSI Sense Code to indicate that the device is not ready for a new command. */
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| 		#define SCSI_SENSE_KEY_NOT_READY                       0x02
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| 
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| 		/** SCSI Sense Code to indicate an error whilst accessing the medium. */
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| 		#define SCSI_SENSE_KEY_MEDIUM_ERROR                    0x03
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| 
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| 		/** SCSI Sense Code to indicate a hardware has occurred. */
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| 		#define SCSI_SENSE_KEY_HARDWARE_ERROR                  0x04
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| 
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| 		/** SCSI Sense Code to indicate that an illegal request has been issued. */
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| 		#define SCSI_SENSE_KEY_ILLEGAL_REQUEST                 0x05
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| 
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| 		/** SCSI Sense Code to indicate that the unit requires attention from the host to indicate
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| 		 *  a reset event, medium removal or other condition.
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| 		 */
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| 		#define SCSI_SENSE_KEY_UNIT_ATTENTION                  0x06
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| 
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| 		/** SCSI Sense Code to indicate that a write attempt on a protected block has been made. */
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| 		#define SCSI_SENSE_KEY_DATA_PROTECT                    0x07
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| 
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| 		/** SCSI Sense Code to indicate an error while trying to write to a write-once medium. */
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| 		#define SCSI_SENSE_KEY_BLANK_CHECK                     0x08
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| 
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| 		/** SCSI Sense Code to indicate a vendor specific error has occurred. */
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| 		#define SCSI_SENSE_KEY_VENDOR_SPECIFIC                 0x09
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| 
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| 		/** SCSI Sense Code to indicate that an EXTENDED COPY command has aborted due to an error. */
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| 		#define SCSI_SENSE_KEY_COPY_ABORTED                    0x0A
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| 
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| 		/** SCSI Sense Code to indicate that the device has aborted the issued command. */
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| 		#define SCSI_SENSE_KEY_ABORTED_COMMAND                 0x0B
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| 
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| 		/** SCSI Sense Code to indicate an attempt to write past the end of a partition has been made. */
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| 		#define SCSI_SENSE_KEY_VOLUME_OVERFLOW                 0x0D
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| 
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| 		/** SCSI Sense Code to indicate that the source data did not match the data read from the medium. */
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| 		#define SCSI_SENSE_KEY_MISCOMPARE                      0x0E
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| 
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| 		/** SCSI Additional Sense Code to indicate no additional sense information is available. */
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| 		#define SCSI_ASENSE_NO_ADDITIONAL_INFORMATION          0x00
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| 
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| 		/** SCSI Additional Sense Code to indicate that the logical unit (LUN) addressed is not ready. */
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| 		#define SCSI_ASENSE_LOGICAL_UNIT_NOT_READY             0x04
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| 
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| 		/** SCSI Additional Sense Code to indicate an invalid field was encountered while processing the issued command. */
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| 		#define SCSI_ASENSE_INVALID_FIELD_IN_CDB               0x24
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| 
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| 		/** SCSI Additional Sense Code to indicate that an attempt to write to a protected area was made. */
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| 		#define SCSI_ASENSE_WRITE_PROTECTED                    0x27
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| 
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| 		/** SCSI Additional Sense Code to indicate an error whilst formatting the device medium. */
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| 		#define SCSI_ASENSE_FORMAT_ERROR                       0x31
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| 
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| 		/** SCSI Additional Sense Code to indicate an invalid command was issued. */
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| 		#define SCSI_ASENSE_INVALID_COMMAND                    0x20
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| 
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| 		/** SCSI Additional Sense Code to indicate a write to a block out outside of the medium's range was issued. */
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| 		#define SCSI_ASENSE_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x21
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| 
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| 		/** SCSI Additional Sense Code to indicate that no removable medium is inserted into the device. */
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| 		#define SCSI_ASENSE_MEDIUM_NOT_PRESENT                 0x3A
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| 
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| 		/** SCSI Additional Sense Qualifier Code to indicate no additional sense qualifier information is available. */
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| 		#define SCSI_ASENSEQ_NO_QUALIFIER                      0x00
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| 
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| 		/** SCSI Additional Sense Qualifier Code to indicate that a medium format command failed to complete. */
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| 		#define SCSI_ASENSEQ_FORMAT_COMMAND_FAILED             0x01
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| 
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| 		/** SCSI Additional Sense Qualifier Code to indicate that an initializing command must be issued before the issued
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| 		 *  command can be executed.
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| 		 */
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| 		#define SCSI_ASENSEQ_INITIALIZING_COMMAND_REQUIRED     0x02
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| 
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| 		/** SCSI Additional Sense Qualifier Code to indicate that an operation is currently in progress. */
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| 		#define SCSI_ASENSEQ_OPERATION_IN_PROGRESS             0x07
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| 		
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| 	/* Type defines: */
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| 		/** \brief Mass Storage Class Command Block Wrapper.
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| 		 *
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| 		 *  Type define for a Command Block Wrapper, used in the Mass Storage Bulk-Only Transport protocol. */
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| 		typedef struct
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| 		{
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| 			uint32_t Signature; /**< Command block signature, must be CBW_SIGNATURE to indicate a valid Command Block. */
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| 			uint32_t Tag; /**< Unique command ID value, to associate a command block wrapper with its command status wrapper. */
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| 			uint32_t DataTransferLength; /**< Length of the optional data portion of the issued command, in bytes. */
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| 			uint8_t  Flags; /**< Command block flags, indicating command data direction. */
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| 			uint8_t  LUN; /**< Logical Unit number this command is issued to. */
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| 			uint8_t  SCSICommandLength; /**< Length of the issued SCSI command within the SCSI command data array. */
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| 			uint8_t  SCSICommandData[16]; /**< Issued SCSI command in the Command Block. */
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| 		} MS_CommandBlockWrapper_t;
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| 		
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| 		/** \brief Mass Storage Class Command Status Wrapper.
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| 		 *
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| 		 *  Type define for a Command Status Wrapper, used in the Mass Storage Bulk-Only Transport protocol.
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| 		 */
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| 		typedef struct
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| 		{
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| 			uint32_t Signature; /**< Status block signature, must be CSW_SIGNATURE to indicate a valid Command Status. */
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| 			uint32_t Tag; /**< Unique command ID value, to associate a command block wrapper with its command status wrapper. */
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| 			uint32_t DataTransferResidue; /**< Number of bytes of data not processed in the SCSI command. */
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| 			uint8_t  Status; /**< Status code of the issued command - a value from the MassStorage_CommandStatusCodes_t enum. */
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| 		} MS_CommandStatusWrapper_t;
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| 		
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| 		/** \brief Mass Storage Class SCSI Sense Structure
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| 		 *  
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| 		 *  Type define for a SCSI Sense structure. Structures of this type are filled out by the
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| 		 *  device via the \ref MS_Host_RequestSense() function, indicating the current sense data of the
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| 		 *  device (giving explicit error codes for the last issued command). For details of the
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| 		 *  structure contents, refer to the SCSI specifications.
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| 		 */
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| 		typedef struct
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| 		{
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| 			uint8_t       ResponseCode;
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| 
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| 			uint8_t       SegmentNumber;
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| 			
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| 			unsigned char SenseKey            : 4;
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| 			unsigned char Reserved            : 1;
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| 			unsigned char ILI                 : 1;
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| 			unsigned char EOM                 : 1;
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| 			unsigned char FileMark            : 1;
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| 			
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| 			uint8_t      Information[4];
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| 			uint8_t      AdditionalLength;
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| 			uint8_t      CmdSpecificInformation[4];
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| 			uint8_t      AdditionalSenseCode;
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| 			uint8_t      AdditionalSenseQualifier;
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| 			uint8_t      FieldReplaceableUnitCode;
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| 			uint8_t      SenseKeySpecific[3];
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| 		} SCSI_Request_Sense_Response_t;
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| 
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| 		/** \brief Mass Storage Class SCSI Inquiry Structure.
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| 		 *
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| 		 *  Type define for a SCSI Inquiry structure. Structures of this type are filled out by the
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| 		 *  device via the \ref MS_Host_GetInquiryData() function, retrieving the attached device's
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| 		 *  information.
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| 		 *
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| 		 *  For details of the structure contents, refer to the SCSI specifications.
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| 		 */
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| 		typedef struct
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| 		{
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| 			unsigned char DeviceType          : 5;
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| 			unsigned char PeripheralQualifier : 3;
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| 			
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| 			unsigned char Reserved            : 7;
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| 			unsigned char Removable           : 1;
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| 			
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| 			uint8_t      Version;
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| 			
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| 			unsigned char ResponseDataFormat  : 4;
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| 			unsigned char Reserved2           : 1;
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| 			unsigned char NormACA             : 1;
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| 			unsigned char TrmTsk              : 1;
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| 			unsigned char AERC                : 1;
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| 
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| 			uint8_t      AdditionalLength;
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| 			uint8_t      Reserved3[2];
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| 
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| 			unsigned char SoftReset           : 1;
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| 			unsigned char CmdQue              : 1;
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| 			unsigned char Reserved4           : 1;
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| 			unsigned char Linked              : 1;
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| 			unsigned char Sync                : 1;
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| 			unsigned char WideBus16Bit        : 1;
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| 			unsigned char WideBus32Bit        : 1;
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| 			unsigned char RelAddr             : 1;
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| 			
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| 			uint8_t      VendorID[8];
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| 			uint8_t      ProductID[16];
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| 			uint8_t      RevisionID[4];
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| 		} SCSI_Inquiry_Response_t;
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| 
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| 	/* Enums: */
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| 		/** Enum for the possible command status wrapper return status codes. */
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| 		enum MassStorage_CommandStatusCodes_t
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| 		{
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| 			SCSI_Command_Pass = 0, /**< Command completed with no error */
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| 			SCSI_Command_Fail = 1, /**< Command failed to complete - host may check the exact error via a
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| 			                        *   SCSI REQUEST SENSE command.
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| 			                        */
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| 			SCSI_Phase_Error  = 2  /**< Command failed due to being invalid in the current phase. */
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| 		};
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| 	
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| 	/* Disable C linkage for C++ Compilers: */
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| 		#if defined(__cplusplus)
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| 			}
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| 		#endif
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| 		
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| #endif
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| 
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| /** @} */
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