norflashapi.h

这是在linux下gnu环境中进行norflash测试的代码

/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
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 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 */
//------------------------------------------------------------------------------
/// \unit
///
/// !!!Purpose
/// 
/// The API layer consists of several functions that allow user to do 
/// operations with flash in a unified way. As a result, future device changes 
/// will not necessarily lead to the code changes in the application environments.
/// In this %norflash library we support AMD and INTEL command set.
/// The API layar code accesses the Flash memory by calling the low-level code, 
/// so users do not have to concern themselves with the details of the special 
/// command sequences.
/// 
/// !!!Usage
/// 
/// !!!Usage
/// -# Flash program using NORFLASH_WriteData().
///    - The Program command is used to modify the data stored at the 
///      specified device address. 
/// -# erase a block within the flash using NORFLASH_EraseSector().
///    - Flash erase is performed on a block basis. An entire block is 
///      erased each time an erase command sequence is given. 
/// -# erase whole blocks within the flash using NORFLASH_EraseChip().
/// -# NORFLASH_Reset() function can be issued, between Bus Write cycles 
///    before the start of a program or erase operation, to return the 
///    device to read mode.
/// -# NORFLASH_ReadDeviceID() is used to retrieve information 
///    about the Flash Device type.
/// -# NORFLASH_ReadManufactoryID() is used to retrieve information 
///    about the Flash Device Manufactory ID.
//------------------------------------------------------------------------------

#ifndef NORFLASHAPI_H
#define NORFLASHAPI_H

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

#include "NorFlashCFI.h"

//------------------------------------------------------------------------------
//         Type
//------------------------------------------------------------------------------

/// Reset or exit CFI query mode function.
typedef void (*fReset) (struct NorFlashInfo *, unsigned int );
/// Write buffer to pNorFlash function.
typedef unsigned char (*fWriteData)(struct NorFlashInfo *, unsigned int , unsigned char *, unsigned int );
/// Read manufactory function.
typedef unsigned int (*fReadManufactoryID)(struct NorFlashInfo *);
/// Read device ID code function.
typedef unsigned int (*fReadDeviceID)(struct NorFlashInfo *);
/// Full erase chip function.
typedef unsigned char (*fEraseChip) (struct NorFlashInfo *);
/// Erase single sector function.
typedef unsigned char (*fEraseSector)(struct NorFlashInfo *, unsigned int );


struct NorFlashOperations {
    /// Reset or exit CFI query mode function.
    void (*_fReset)(struct NorFlashInfo *pNorFlashInfo, unsigned int address);
    /// Write buffer to norflash function.
    unsigned char (*_fWriteData)(struct NorFlashInfo *pNorFlashInfo,
       unsigned int address,
       unsigned char *buffer,
       unsigned int size);
    /// Read manufactory function.
    unsigned int  (*_fReadManufactoryID)(struct NorFlashInfo *pNorFlashInfo);
    /// Read device ID code function.
    unsigned int (*_fReadDeviceID)(struct NorFlashInfo *pNorFlashInfo);
    /// Full erase chip function.
    unsigned char (*_fEraseChip) (struct NorFlashInfo *pNorFlashInfo);
    /// Erase single sector function.
    unsigned char (*_fEraseSector)(struct NorFlashInfo *pNorFlashInfo, unsigned int address);
};

//------------------------------------------------------------------------------
//         Exported functions
//------------------------------------------------------------------------------

extern void NORFLASH_Reset(struct NorFlash *norFlash, unsigned int address);

extern unsigned int NORFLASH_ReadManufactoryID(struct  NorFlash *norFlash);

extern unsigned int NORFLASH_ReadDeviceID(struct  NorFlash *norFlash);

extern unsigned char NORFLASH_EraseSector(
    struct NorFlash *norFlash, 
    unsigned int sectorAddr);

extern unsigned char NORFLASH_EraseChip(
    struct NorFlash *norFlash);

extern unsigned char NORFLASH_WriteData(
    struct NorFlash *norFlash,
    unsigned int address,
    unsigned char *buffer,
    unsigned int size);

extern unsigned char NORFLASH_ReadData(
    struct NorFlash *norFlash,
    unsigned int address,
    unsigned char *buffer,
    unsigned int size);


#endif //#ifndef NORFLASHAPI_H