nf_drv.h

此文件为GPS源代码

#ifndef _nf_drv_h
#define _nf_drv_h
/*_____ I N C L U D E S ____________________________________________________*/

#include "board.h"                /* board definition */
/*_____ M A C R O S ________________________________________________________*/

/************************** Read Command ************************************/
#define NF_READ_CMD                   0x00
#define NF_READ_CMD2                  0x30
#define NF_RANDOM_READ_CMD_C1         0x05
#define NF_RANDOM_READ_CMD_C2         0xE0
/************************** Read Command ************************************/
#define NF_READ_A_AREA_CMD           0x00
#define NF_READ_B_AREA_CMD           0x01
#define NF_READ_C_AREA_CMD           0x50
/************************** Read ID Command *********************************/
#define NF_READ_ID_CMD               0x90
#define NF_RESET_CMD                 0xff
/************************** Program command *********************************/
#define NF_SEQUENTIAL_DATA_INPUT_CMD 0x80
#define NF_PAGE_PROGRAM_CMD          0x10
/************************** Erase command ***********************************/
#define NF_BLOCK_ERASE_CMD           0x60
#define NF_BLOCK_ERASE_CONFIRM_CMD   0xD0
/************************** Read Status command *****************************/
#define NF_READ_STATUS_CMD           0x70
#define Nf_wait_busy()              {while (!NF_RD_BUSY);}
/************************ Block Copy command  ****************************/
#define NF_COPY_BACK_CMD			0x8A
/* Low Level routine */
#define Nf_rd_byte()                (nf_data)
#define Nf_wr_byte(b)               (nf_data = b)
#define Nf_send_command(command)    (nf_send_cmd = command)
#define Nf_send_address(address)    (nf_send_add = address) 	

#define Nf_get_block_page(pos)		( (pos)>>9 )
#define Nf_get_column(pos)			( (pos)& 0xFF )
#define Nf_get_pointer_operation(pos)	( ((pos)>>8) & 0x01 )

#define Nf_partition_address(pos)								\
			nf_block_page_add=Nf_get_block_page(pos);		\
			nf_column_add=Nf_get_column(pos);				\
			nf_ptr_operation=Nf_get_pointer_operation(pos)
			
#define Nf_read_open(block_page_add,column_add)			\
			Nf_send_command(nf_ptr_operation);				\
			Nf_send_address(column_add);					\
			Nf_send_address( ((Byte*)&block_page_add)[3] ); \
			Nf_send_address( ((Byte*)&block_page_add)[2] ); \
			Nf_send_address( ((Byte*)&block_page_add)[1] );	\
			Nf_wait_busy()
			
			/* read the content of the first spare sector */
#define Nf_read_c_open(block_page_add)						\
			Nf_send_command(NF_READ_C_AREA_CMD);				\
			Nf_send_address( ((Byte*)&block_page_add)[3] );	\ 
			Nf_send_address( ((Byte*)&block_page_add)[2] );	\
			Nf_send_address( ((Byte*)&block_page_add)[1] );	\
			Nf_wait_busy()

#define Nf_write_c_open(block_page_add)						\
			Nf_send_command(NF_READ_C_AREA_CMD);				\
			Nf_send_command(NF_SEQUENTIAL_DATA_INPUT_CMD);		\
			Nf_send_address( ((Byte*)&block_page_add)[3]);	\
			Nf_send_address( ((Byte*)&block_page_add)[2]);	\
			Nf_send_address( ((Byte*)&block_page_add)[1])
/*
#define Nf_read_lenth_data(block_page_add,column_add,pointer_operation)	\
			Nf_send_command(pointer_operation);						\
			Nf_send_address(column_add);
			Nf_send_address(block_page_add);
*/

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

extern  xdata Byte nf_send_cmd;                       /* Command */
extern  xdata Byte nf_send_add;                       /* Address */
extern  xdata Byte volatile nf_data;                  /* Data */

extern idata Byte gl_buffer[GL_BUF_SIZE];                  // global buffer of 256 bytes 
extern Uint32 nf_block_page_add;						// general block and page address
extern Uchar nf_column_add;							// general column address
extern Uchar nf_ptr_operation;					// general pointer operation
extern Uchar test;
/*----- Firmware Definition -----*/


/*-------  Declaration  --------------------------*/
bit  nf_block_erase();							//删除一块

Uint16 nf_read_bytes(Int16 len);				//读取len个的字节数据
Byte nf_read_byte();							//读取一个字节
void nf_read_spare_sector();					//读取所有备份区中的数据
Byte nf_read_spare_byte();						//读取备份区中一个字节数据

bit nf_write_spare_byte(Byte b);				//把数据b写入到Flash的备份区中
bit nf_write_bytes(Int16 len);					//写入len个字节数据
bit nf_write_byte(Byte b);						//把数据b写入到Flash中
void initial_gl_buffer();			



bit nf_page_copy_back(Uint32 source_add,Uint32 target_add);


#endif