df.h

MP3播放器详细设计方案

/*H**************************************************************************
* $RCSfile: df.h,v $         
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      $Name: DEMO_FAT_1_9_9 $      
* REVISION:     $Revision: 1.8 $     
* FILE_CVSID:   $Id: df.h,v 1.8 2002/08/14 07:41:39 ffosse Exp $       
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the dataflash definition
*****************************************************************************/

#ifndef _DF_H_
#define _DF_H_

/*_____ I N C L U D E S ____________________________________________________*/

#include "..\..\lib_demob\board.h"          /* board definition */


/*_____ M A C R O S ________________________________________________________*/


/*----- DataFlash definition -----*/
#define DF_MSK_DENSITY    ((Byte)0xB8)      /* status density mask */
#define DF_MSK_BIT_BUSY   ((Byte)0x80)
#define DF_MEM_BUSY       ((Byte)0x00)

#define DF_RD_STATUS      ((Byte)0x57)      /* read status */
#define DF_PG_ERASE       ((Byte)0x81)      /* page erase */
#define DF_BK_ERASE       ((Byte)0x50)      /* block erase */

#define DF_WR_BUF_1       ((Byte)0x84)      /* write buffer 1 */
#define DF_WR_BUF_2       ((Byte)0x87)      /* write buffer 2 */
#define DF_B1_MAIN        ((Byte)0x83)      /* buffer 1 to main program with erase */
#define DF_B2_MAIN        ((Byte)0x86)      /* buffer 2 to main program with erase */

#define DF_RD_MAIN        ((Byte)0x52)      /* read main memory */
#define DF_TF_BUF_1       ((Byte)0x53)      /* main memory page to buffer 1 transfer */
#define DF_TF_BUF_2       ((Byte)0x55)      /* main memory page to buffer 2 transfer */
#define DF_RD_BUF_1       ((Byte)0x54)      /* read buffer 1 */
#define DF_RD_BUF_2       ((Byte)0x56)      /* read buffer 2 */


#ifdef DF_4_MB            /* AT45DB321 memories */
  #define DF_DENSITY      ((Byte)0xB0)
  #define DF_PG_BUF_1     ((Byte)0x82)      /* main memory program through buf1 */
  #define DF_PG_BUF_2     ((Byte)0x85)      /* main memory program through buf2 */
  #define DF_MEM_SIZE     ((Uint32)0x400000)
  #define DF_NB_BLOCK     ((Uint16)1024)    /* block number */
  #define DF_BLOCK_SIZE   ((Byte)8)         /* block length (in page) */
  #define DF_PAGE_SIZE    (512)             /* page length */
  #define DF_PAGE_MASK    ((Byte)0x01)      /* mask MSB page bits */
  #define DF_MEM_MASKH    ((Byte)0x80)
  #define DF_MEM_MASKL    ((Byte)0x40)
  #define DF_MEM_BYTEH    ((Byte)1)
  #define DF_MEM_BYTEL    ((Byte)1)
  #define DF_SHFT_B1      (1)
  #define DF_SHFT_B2      (7)
  #define DF_NB_CYLINDER  ((Uint16)511)
  #define DF_NB_HEAD      ((Byte)4)
  #define DF_NB_SECTOR    ((Byte)16)
  #define DF_DISK_SIZE    (Uint32)(32767)
#endif

#ifdef DF_8_MB             /* AT45DB642 memories */
  #define DF_DENSITY      ((Byte)0xB8)
  #define DF_PG_BUF_1     ((Byte)0x92)      /* fast main memory program through buf1 */
  #define DF_PG_BUF_2     ((Byte)0x95)      /* fast main memory program through buf2 */
  #define DF_MEM_SIZE     ((Uint32)0x800000)
  #define DF_NB_BLOCK     ((Uint16)1024)    /* block number */
  #define DF_BLOCK_SIZE   ((Byte)8)         /* block length (in page) */
  #define DF_PAGE_SIZE    (1024)            /* page length */
  #define DF_PAGE_MASK    ((Byte)0x03)      /* mask MSB page bits */
  #define DF_MEM_MASKH    ((Byte)0x01)
  #define DF_MEM_MASKL    ((Byte)0x80)
  #define DF_MEM_BYTEH    ((Byte)0)
  #define DF_MEM_BYTEL    ((Byte)1)
  #define DF_SHFT_B1      (1)
  #define DF_SHFT_B2      (7)
  #define DF_NB_CYLINDER  ((Uint16)511)
  #define DF_NB_HEAD      ((Byte)8)
  #define DF_NB_SECTOR    ((Byte)16)
  #define DF_DISK_SIZE    (Uint32)(65535)
#endif


/* Memory Size based on 512 bytes block size */
#define DF_SIZE_16MB      ((Uint32)32768 - 1)
#define DF_SIZE_32MB      ((Uint32)65536 - 1)

#define DF_16MB           ((Byte)0)
#define DF_32MB           ((Byte)1)


/*_____ D E F I N I T I O N ________________________________________________*/


/*_____ D E C L A R A T I O N ______________________________________________*/

Byte    df_init (void);
void    df_init_mem (void);
bit     df_read_open (Uint32);
void    df_read_close (void);
bit     df_write_open (Uint32);
void    df_write_close (void);
Byte    df_read_byte (void);
bit     df_read_sector (Uint16);
bit     df_write_byte (Byte);
bit     df_write_sector (Uint16);
s_format  code * df_format (void);


/* Disk size: number of block - 1 */
#define Df_disk_size()            ((Uint32)(DF_DISK_SIZE))
#define Df_disk_size_0()          ((Byte)(Df_disk_size() >> 24))
#define Df_disk_size_1()          ((Byte)(Df_disk_size() >> 16))
#define Df_disk_size_2()          ((Byte)(Df_disk_size() >> 8))
#define Df_disk_size_3()          ((Byte)(Df_disk_size()))

/* Block size: size of a block in byte */
#define Df_block_size()           ((Uint32)512)
#define Df_block_size_0()         ((Byte)(Df_block_size() >> 24))
#define Df_block_size_1()         ((Byte)(Df_block_size() >> 16))
#define Df_block_size_2()         ((Byte)(Df_block_size() >> 8))
#define Df_block_size_3()         ((Byte)(Df_block_size()))


#endif  /* _DF_H_ */