msdlun.h

Include startup files and peripherial devices Code for Atmel ARM7 development

/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
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 * Copyright (c) 2008, Atmel Corporation
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//------------------------------------------------------------------------------
/// \unit
/// !Purpose
/// 
/// Logical Unit Number (LUN) used by the Mass Storage driver and the SCSI
/// protocol. Represents a logical hard-drive.
/// 
/// !Usage
/// -# Initialize Memory related pins (see pio & board.h).
/// -# Initialize a Media instance for the LUN (see memories).
/// -# Initlalize the LUN with LUN_Init, and link to the initialized Media.
/// -# To read data from the LUN linked media, uses LUN_Read.
/// -# To write data to the LUN linked media, uses LUN_Write.
//------------------------------------------------------------------------------

#ifndef MSDLUN_H
#define MSDLUN_H

//------------------------------------------------------------------------------
//         Headers
//------------------------------------------------------------------------------

#include "SBC.h"
#include <memories/Media.h>
#include <usb/device/core/USBD.h>

//------------------------------------------------------------------------------
//      Definitions
//------------------------------------------------------------------------------

#define LUN_STATUS_SUCCESS          0x00
#define LUN_STATUS_ERROR            0x02

//------------------------------------------------------------------------------
//      Structures
//------------------------------------------------------------------------------

/// LUN structure
typedef struct {

    /// Pointer to a SBCInquiryData instance.
    SBCInquiryData        *inquiryData;
    /// Buffer for USB transfer, must be assigned.
    unsigned char         *readWriteBuffer;
    /// Data for the RequestSense command.
    SBCRequestSenseData   requestSenseData;
    /// Data for the ReadCapacity command.
    SBCReadCapacity10Data readCapacityData;
    /// Pointer to Media instance for the LUN.
    Media                 *media;
    /// The start position of the media allocated to the LUN.
    unsigned int          baseAddress;
    /// The size of the media allocated to the LUN.
    unsigned int          size;
    /// Sector size of the media
    unsigned int          blockSize;

} MSDLun;

//------------------------------------------------------------------------------
//      Exported functions
//------------------------------------------------------------------------------
extern void LUN_Init(MSDLun         *lun,
                     Media       *media,
                     unsigned char *buffer,
                     unsigned int  baseAddress,
                     unsigned int  size,
                     unsigned int  blockSize);

extern unsigned char LUN_Write(MSDLun *lun,
                               unsigned int blockAddress,
                               void         *data,
                               unsigned int length,
                               TransferCallback   callback,
                               void         *argument);

extern unsigned char LUN_Read(MSDLun        *lun,
                              unsigned int blockAddress,
                              void         *data,
                              unsigned int length,
                              TransferCallback   callback,
                              void         *argument);

#endif //#ifndef MSDLUN_H