rawnandflash.h

8bit nand flash interface for at91sam9263ek,其中编辑器为keil for mdk

/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
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//------------------------------------------------------------------------------
/// \page "RawNandflash"
///
/// !!!Purpose
/// 
/// RawNandflash is a bl Nandflash driver, it directly interacts with hardware's register to 
/// operate Nandflash interface, and it is called by upper layer drivers, such as EccNandFlash
///  
/// !!!Usage
///
/// -# RawNandFlash_Initialize is used to initializes a RawNandFlash instance based on the given
///      model and physical interface. If no model is provided, then the function tries to autodetect
///      it.
/// -# RawNandFlash_Reset is used to reset a Nandflash device.
/// -# RawNandFlash_ReadId is used to read a Nandflash's id.
/// -# RawNandFlash_EraseBlock is used to erase a certain Nandflash device's block.
/// -# RawNandFlash_ReadPage and RawNandFlash_WritePage is used to do read/write operation.
/// -# RawNandFlash_CopyPage is used to issue copypage command to Nandflash device.
/// -# RawNandFlash_CopyBlock calls RawNandFlash_CopyPage to do a Nandflash block copy.
//------------------------------------------------------------------------------


#ifndef RAWNANDFLASH_H
#define RAWNANDFLASH_H

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

#include "NandFlashModel.h"
#include <pio/pio.h>

//------------------------------------------------------------------------------
//         Types
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
/// Describes a physical NandFlash chip connected to the SAM microcontroller.
//------------------------------------------------------------------------------
struct RawNandFlash {

    /// Model describing this NandFlash characteristics.
    struct NandFlashModel model;
    /// Address for sending commands to the NandFlash.
    unsigned int commandAddress;
    /// Address for sending addresses to the NandFlash
    unsigned int addressAddress;
    /// Address for sending data to the NandFlash.
    unsigned int dataAddress;
    /// Pin used to enable the NandFlash chip.
    Pin pinChipEnable;
    /// Pin used to monitor the ready/busy signal from the NandFlash.
    Pin pinReadyBusy;
};

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

extern unsigned char RawNandFlash_Initialize(
    struct RawNandFlash *raw,
    const struct NandFlashModel *model,
    unsigned int commandAddress,
    unsigned int addressAddress,
    unsigned int dataAddress,
    const Pin pinChipEnable,
    const Pin pinReadyBusy);

extern void RawNandFlash_Reset(const struct RawNandFlash *raw);

extern unsigned int RawNandFlash_ReadId(const struct RawNandFlash *raw);

extern unsigned char RawNandFlash_EraseBlock(
    const struct RawNandFlash *raw,
    unsigned short block);

extern unsigned char RawNandFlash_ReadPage(
    const struct RawNandFlash *raw,
    unsigned short block,
    unsigned short page,
    void *data,
    void *spare);

extern unsigned char RawNandFlash_WritePage(
    const struct RawNandFlash *raw,
    unsigned short block,
    unsigned short page,
    void *data,
    void *spare);

extern unsigned char RawNandFlash_CopyPage(
    const struct RawNandFlash *raw,
    unsigned short sourceBlock,
    unsigned short sourcePage,
    unsigned short destBlock,
    unsigned short destPage);

extern unsigned char RawNandFlash_CopyBlock(
    const struct RawNandFlash *raw,
    unsigned short sourceBlock,
    unsigned short destBlock);

#endif //#ifndef RAWNANDFLASH_H