spi_flash.h

Freescale MCF5445evb 参考测试代码

/*!
 * \file    spi_flash.h
 * \brief   Defines for standard SPI Flash commands
 * \version $Revision: 1.1 $
 * \author  Michael Norman
 */
 
#ifndef __SPI_FLASH_H__
#define __SPI_FLASH_H__

/********************************************************************/
/* Instruction/Command Codes */
#define SPIFLASH_WREN       0x06
#define SPIFLASH_WRDI       0x04
#define SPIFLASH_RDID       0x9F
#define SPIFLASH_RDSR       0x05
#define SPIFLASH_WRSR       0x01
#define SPIFLASH_READ       0x03
#define SPIFLASH_FAST_READ  0x0B
#define SPIFLASH_PP         0x02
#define SPIFLASH_SE         0xD8
#define SPIFLASH_BE         0xC7
#define SPIFLASH_DP         0xB9
#define SPIFLASH_RES        0xAB

/* Serial Flash Status Register  */
#define SPIFLASH_SR_SRWD    0x80
#define SPIFLASH_SR_BP2     0x10
#define SPIFLASH_SR_BP1     0x08
#define SPIFLASH_SR_BP0     0x04
#define SPIFLASH_SR_WEL     0x02
#define SPIFLASH_SR_WIP     0x01
#define SPIFLASH_SR_BP(x)   ((x & 0x7) << 2)

/* Device Specific Info */
#define SSIZE(n)            (0x10000)       /* sector size */
#define SOFFSET(n)          (SSIZE(n) * n)  /* sector address offset */
#define PSIZE(n)            (256)           /* page size */
#define POFFSET(n)          (SSIZE(n) * n)  /* page address offset */

#define SPIFLASH_SECTORS    32
#define SPIFLASH_PAGES      8192

/*!
 * \struct Device Identification Data
 */
typedef struct spi_flash_device_id
{
    uint8   manuf_id;   /*!< Manufacturer ID */
    uint8   mem_type;   /*!< Device ID: Memory Type */
    uint8   mem_cap;    /*!< Device ID: Memory Capacity */
} SPI_FLASH_DEVICE_ID;

/*
 * Function prototypes
 */
int
spi_flash_init (void);

static int
spi_flash_write_enable (void);

static int
spi_flash_write_disable (void);

SPI_FLASH_DEVICE_ID*
spi_flash_read_id (void);

uint8
spi_flash_read_sr (void);

int
spi_flash_write_sr (uint8 sr);

int
spi_flash_read (ADDRESS address, int length, uint8 *buffer);

int
spi_flash_fast_read (ADDRESS address, int length, uint8 *buffer);

int
spi_flash_page_program (ADDRESS address, int length, uint8 *buffer);

int
spi_flash_sector_erase (ADDRESS address);

int
spi_flash_bulk_erase (void);

int
spi_flash_power_down (void);

int
spi_flash_wake_up (void);

int
spi_flash_erase(ADDRESS start, int bytes, int print);

int
spi_flash_program(ADDRESS dest, ADDRESS src, int bytes, int erase, int print);

void
spi_flash_dump (ADDRESS addr, int bytes);

void
spi_flash_dump_id (void);

void
spi_flash_test (void);

/********************************************************************/

#endif /* __SPI_FLASH_H__ */