dataflash.h

ARM入门的好帮手.包含了从简单到相对较复杂的程序.

//*---------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*---------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*---------------------------------------------------------------------------
//* File Name           : at45db321.h
//* Object              : Data Flash Atmel AT45DB321 Description File
//* Translator          : ARM Software Development Toolkit V2.5
//*
//* 1.0 03/06/00 PF		: Creation
//*---------------------------------------------------------------------------

#ifndef at45db321_h
#define at45db321_h

/*--------------------*/
/* Command Definition */
/*--------------------*/

#define DB_PAGE_READ                   0x52		/* Main memory page read */
#define DB_BUF1_READ                   0x54		/* Buffer 1 read */
#define DB_BUF2_READ                   0x56		/* Buffer 2 read */
#define DB_PAGE_2_BUF1_TRF             0x53		/* Main memory page to buffer 1 transfert */
#define DB_PAGE_2_BUF2_TRF             0x55		/* Main memory page to buffer 2 transfert */
#define DB_PAGE_2_BUF1_CMP             0x60		/* Main memory page to buffer 1 compare */
#define DB_PAGE_2_BUF2_CMP             0x61		/* Main memory page to buffer 2 compare */
#define DB_BUF1_WRITE                  0x84		/* Buffer 1 write */
#define DB_BUF2_WRITE                  0x87		/* Buffer 2 write */
#define DB_BUF1_PAGE_ERASE_PGM         0x83		/* Buffer 1 to main memory page program with built-In erase */
#define DB_BUF2_PAGE_ERASE_PGM         0x86		/* Buffer 2 to main memory page program with built-In erase */
#define DB_BUF1_PAGE_PGM               0x88		/* Buffer 1 to main memory page program without built-In erase */

#define DB_BUF2_PAGE_PGM               0x89		/* Buffer 2 to main memory page program without built-In erase */
#define DB_PAGE_ERASE                  0x81		/* Page Erase */
#define DB_BLOCK_ERASE                 0x50		/* Block Erase */
#define DB_PAGE_PGM_BUF1               0x82		/* Main memory page through buffer 1 */
#define DB_PAGE_PGM_BUF2               0x85		/* Main memory page through buffer 2 */
#define DB_AUTO_PAGE_PGM_BUF1          0x58		/* Auto page rewrite throught buffer 1 */
#define DB_AUTO_PAGE_PGM_BUF2          0x59		/* Auto page rewrite throught buffer 2 */

#define DB_STATUS                      0x57		/* Status Register */

/*-----------------*/
/* Size Definition */
/*-----------------*/

#define DB321_PAGE_SIZE                 528
#define DB321_PAGE_PER_BLOCK            8
#define DB321_BLOCK_SIZE                (DB321_PAGE_SIZE*DB321_PAGE_PER_BLOCK)			/* 528*8 = 4224 bytes */
#define DB321_BLOCK_PER_SECTOR          64
#define DB321_PAGE_PER_SECTOR           (DB321_PAGE_PER_BLOCK*DB321_BLOCK_PER_SECTOR)	/* 8*64 = 512 pages */
#define DB321_SECTOR_SIZE               (DB321_BLOCK_PER_SECTOR*DB321_BLOCK_SIZE)		/* (8*528)*64 = 270336 bytes */
#define DB321_SECTOR_NUMBER             17
#define DB321_SECTOR_0_SIZE		(DB321_PAGE_PER_BLOCK*DB321_PAGE_SIZE)			/* 8*528 = 4224 bytes */
#define DB321_SECTOR_1_SIZE		(DB321_BLOCK_PER_SECTOR*DB321_BLOCK_SIZE)		/* 64*4224 = 261888 bytes */
#define DB321_SIZE                      (DB321_SECTOR_NUMBER*DB321_SECTOR_SIZE)

#define DB_STATUS_MASK_READY		0x80			/* Dataflash ready/busy mask */


/*DataFlash return value */
#define DATAFLASH_WRITE_OK		TRUE
#define DATAFLASH_READ_OK		TRUE
#define DATAFLASH_OPEN_OK		TRUE
#define DATAFLASH_READY			TRUE
#define DATAFLASH_BUSY			FALSE

#define DATAFLASH_INVALIDE		-1
#define DATAFLASH_MEMORY_OVERFLOW	-2
#define DATAFLASH_WRITE_ERROR		-3
#define DATAFLASH_READ_ERROR		-4
#define DATAFLASH_OPEN_ERROR		-5

/*DataFlash device definition structure */

typedef struct
{
    unsigned char	Dataflash_mask;
    int    		pages_number;
    int			pages_size;
}S_DataflashDef;



extern S_DataflashDef *S_Dataflash_detect; 
extern u_int dataflash_open ( void );
extern void dataflash_close ( void );
extern int dataflash_wait_ready(int time_out );
extern int dataflash_read (int src, u_char *dest, int size );
extern int dataflash_write (u_char *src, int dest, int size);

extern void dataflash_write_buffer ( u_char *src, u_char *dest, int size ) ;
extern void dataflash_read_buffer ( u_char *src, u_char *dest, int size ) ;


#endif /* at45db321_h */