spiflash.h

spiflash操作

/***************************************************************
   2007 3.26

	当采用硬件SPI模式时,请安下列要求配置MCU的SPI
						1〉Enable SPI0 
						2> operation in Master Mode	 
						3> data centered on first edge of sck 
						4> sck line low idle state
						5〉3 wire mode
******************************************************************/


#ifndef __SPIFLASH__H__ 
#define __SPIFLASH__H__ 
#include "C8051F310.h"	 //如果采用C8051F340,请改为340的头文件

#define SIMULATION_SPI 1		//1--软件模拟SPI时序   0--硬件SPI

#define USE_M25P80				//如果型号改变请修改此值
/* Possible Values:	USE_M25P40	USE_M25P80	USE_M25P16	USE_M25P32 */

#define COUNT_FOR_WRITE_DELAY (0x5FFFFL)		//根据不同的硬件来调整  

#if SIMULATION_SPI					//软件SPI的管脚定义
	sbit SPI_SCK = P0^0;	        //串行时钟
	sbit SPI_MOSI= P0^2;			//串行数据主输出从输入
	sbit SPI_MISO= P0^1;			//串行数据主输入从输出
	sbit SPI_NSS = P0^3;			//从选择
	sbit SPI_WP  = P3^3;			//写保护
#else								//硬件SPI的管脚定义
	sbit SPI_NSS = P0^3;			//从选择
	sbit SPI_WP  = P3^3;			//写保护
#endif

unsigned char SPIFLASH_init(void);				//初始化SPIFlash 读取相关状态，并硬件写保护
unsigned char SPIFLASH_protect(void); 			//硬件保护SPIFlash
unsigned char SPIFLASH_unProtect(void);			//解保护
unsigned char SPIFLASH_erase_sector(unsigned char sectorNo);									//擦除扇区
unsigned char SPIFLASH_write(unsigned long addr, unsigned char xdata *wbuf, unsigned char wlen); //写数据
unsigned char SPIFLASH_read(unsigned long addr, unsigned char xdata *rbuf, unsigned char rlen); 	//读数据

/*--------------------------------------------------------------------------------*/

#ifdef USE_M25P40                        /* The M25P40 device */
   #define EXPECTED_DEVICE (0x13)        /* Device Identification for the USE_M25P40 */
   #define FLASH_SIZE (0x080000)         /* Total device size in Bytes */
#endif /* USE_M25P40 */

#ifdef USE_M25P80                        /* The M25P80 device */
   #define EXPECTED_DEVICE (0x14)        /* Device Identification for the USE_M25P80 */
   #define FLASH_SIZE (0x0100000)        /* Total device size in Bytes */
#endif /* USE_M25P80 */

#ifdef USE_M25P16                        /* The M25P16 device */
   #define EXPECTED_DEVICE (0x15)   	 /* Device Identification for the USE_M25P16 */
   #define FLASH_SIZE (0x0200000)        /* Total device size in Bytes */
#endif /* USE_M25P16 */ 

#ifdef USE_M25P32                        /* The USE_M25P32 device */
   #define EXPECTED_DEVICE (0x16)        /* Device Identification for the USE_M25P32 */
   #define FLASH_SIZE (0x0400000)        /* Total device size in Bytes */
#endif /* USE_M25P32 */

#ifdef USE_M25P64                        /* The USE_M25P64 device */
   #define EXPECTED_DEVICE (0x17)        /* Device Identification for the USE_M25P64 */
   #define FLASH_SIZE (0x0800000)        /* Total device size in Bytes */
#endif /* USE_M25P64 */

#define FLASH_SECTOR_COUNT ((unsigned char)(FLASH_SIZE/65536L))
#define ManufacturerID		0x20		//厂商ID

#endif