smc_drv.h

MP3播放器详细设计方案

/*H**************************************************************************
* $RCSfile: smc_drv.h,v $         
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      $Name: DEMO_FAT_1_9_9 $      
* REVISION:     $Revision: 1.2 $     
* FILE_CVSID:   $Id: smc_drv.h,v 1.2 2002/08/28 09:45:09 njourdan Exp $       
*----------------------------------------------------------------------------
* PURPOSE:        This file contains the SMC driver definitions
*
*****************************************************************************/

#ifndef _SMC_DRV_H_
#define _SMC_DRV_H_

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


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

/************************** Read Command ************************************/
#define SMC_READ_A_AREA_CMD           0x00
#define SMC_READ_B_AREA_CMD           0x01
#define SMC_READ_C_AREA_CMD           0x50
/************************** Read ID Command *********************************/
#define SMC_READ_ID_CMD               0x90
#define SMC_RESET_CMD                 0xff
/************************** Program command *********************************/
#define SMC_SEQUENTIAL_DATA_INPUT_CMD 0x80
#define SMC_PAGE_PROGRAM_CMD          0x10
/************************** Erase command ***********************************/
#define SMC_BLOCK_ERASE_CMD           0x60
#define SMC_BLOCK_ERASE_CONFIRM_CMD   0xD0
/************************** Read Status command *****************************/
#define SMC_READ_STATUS_CMD           0x70

/* Pin out definition */
#define SMC_RD_BUSY          P2_4
#define Smc_CS_ON()          (P2_3 = 0)
#define Smc_CS_OFF()         (P2_3 = 1)
#define SMC_PRESENT          (/* Define a Pin here */ 1 )

#define Smc_card_detect()     (SMC_PRESENT)

#define SMC_BUFFER_SIZE              (Byte)(32)


#define Smc_wait_busy()  { while ( !SMC_RD_BUSY); }


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

/* Structure to store the correspondance between logical and physical block */
typedef struct 
{
  Byte   zone;
  Uint16 logical_block;
  Uint16 physical_block;
} t_reassign_block;




/* ECC DEFINITION */
#define BIT7 0x80
#define BIT6 0x40
#define BIT5 0x20
#define BIT4 0x10
#define BIT3 0x08
#define BIT2 0x04
#define BIT1 0x02
#define BIT0 0x01
#define BIT1BIT0 0x03
#define BIT23 0x00800000L
#define MASK_CPS 0x3f
#define CORRECTABLE 0x00555554L

//#define SMC_ECC


/* SMARTMEDIAD CARD DEFINITION */
/* This value are only for 16Mbytes and upper SMARTMEDIA Card capacities   */
#define SMC_PAGE_PER_BLOCK (32)    /* pages_block value: pages in a block   */ 
#define SMC_DATA_SIZE      (512)   /* data_size   value: data_size in bytes */
#define SMC_SPARE_SIZE     (16)    /* spare_size  value: spare_size in bytes*/
#define SMC_ZONE_MAX       (8)     /* 8 zones                               */
#define SMC_BLOCK_PER_ZONE (1024)  /* 1024 block per size                   */

#define SMC_SIZE_16MB          (Byte)(16)
#define SMC_SIZE_32MB          (Byte)(32)
#define SMC_SIZE_64MB          (Byte)(64)
#define SMC_SIZE_128MB         (Byte)(128)

#define SMC_16MB               (0)
#define SMC_32MB               (1)
#define SMC_64MB               (2)
#define SMC_128MB              (3)

#define SMC_SECTOR_SIZE_16MB   (Uint32)(31999)
#define SMC_SECTOR_SIZE_32MB   (Uint32)(63999)
#define SMC_SECTOR_SIZE_64MB   (Uint32)(127999)
#define SMC_SECTOR_SIZE_128MB  (Uint32)(255999)

/* SCSI DEFINITION FOR SMARTMEDIA */
#define SMC_BLOCK_SIZE     ((Uint32)(SMC_DATA_SIZE))
#define SMC_DISK_SIZE      ((Uint32)(smc_disk_size))

/* Low Level routine */
#define Smc_rd_byte()                 (smc_data)
#define Smc_wr_byte(b)                (smc_data = b)
#define Smc_send_command(command)     (smc_send_cmd = command)
#define Smc_send_address(address)     (smc_send_add = address)


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

extern xdata Uint32 smc_disk_size;

void smc_init_buffer(void);          /* Initialize the buffer gl_buffer with 0xFF          */
void smc_copy_block_head(void);      /* Copy the first sectors of a block                  */
void smc_copy_block_tail(void);      /* Copy the last sectors of a block                   */
void smc_reassign_block(void);       /* reassign the physical block on the look up table   */
bit smc_block_erase (Uint32);        /* Erase one block                                    */
bit smc_erase_all_block(void);       /* Erase all block                                    */
void smc_init_spare(void);           /* Init the first redundant data of a block           */
void smc_calc_logical_block();       /* Calulate the value of logical block in spare area  */
void smc_update_spare_data(void);    /* Write only the redundant information               */
void smc_calculate_ecc(void);
void read_spare_byte(void);


extern void smc_download_buffer(void);   /* Copy the content of gl_buffer on the card      */
extern void smc_upload_buffer(void);     /* Load the content of the card on gl_buffer      */
extern void smc_usb_to_buff_64(Byte);    /* Transfer 64 bytes from USB to gl_buffer        */      
extern void smc_download_buff_64(Byte);  /* Transfer 64 bytes from gl_buffer to media      */
#endif /* _SMC_DRV_H_ */