stc_eeprom.c

步进电机控制的C程序

					 /* ---  STC International Limited ---------------- */
/* ---  宏晶科技 姚永平  设计 2004/9/11   V1.0 --- */
/* ---  宏晶科技 姚永平  设计 2004/12/4   V2.0 --- */
/* ---  RD+/RC系列   Flash IAP/ISP Operation ----- */
/* ---  STC89C54RD+, STC89C58RD+,              --- */
/* ---  STC89LE54RD+,STC89LE58RD+,              -- */
/* ---  STC89C51RC,  STC89C52RC,             ----- */
/* ---  STC89LE51RC, STC89LE52RC,             ---- */
/* ---  Mobile: [phone] ---------------------- */
/* ---  Fax: [phone] ----------------------- */
/* ---  Tel: [phone] ----------------------- */
/* ---  Web  : www.mcu-memory.com ---------------- */
/* ---  感谢网友2004/12/3的指正,送样品以示感谢 --- */
//#include "stc89c52rd.h"
//#include <REG52.H>
#include "STC89C52RD.h"

#include <intrins.h>        /* use _nop_() function */
//sfr16 DPTR = 0x82;
/*
//        新增特殊功能寄存器定义        //
sfr	 ISP_DATA	=   0xe2;
sfr     ISP_ADDRH	=   0xe3;  
sfr	 ISP_ADDRL	=   0xe4;
sfr	 ISP_CMD	=   0xe5; 
sfr	 ISP_TRIG	=   0xe6;   
sfr	 ISP_CONTR    =   0xe7; 
*/
unsigned int Begin_addr =0;

// 定义命令 //
#define READ_AP_and_Data_Memory_Command				0x01        //  字节读数据存储区   //
#define PROGRAM_AP_and_Data_Memory_Command          0x02        //  字节编程数据存储区 //
#define SECTOR_ERASE_AP_and_Data_Memory_Command     0x03        //  扇区擦除数据存储区 //

typedef     unsigned char	INT8U;		// 8 bit 无符号整型  //
typedef     unsigned int    INT16U;     // 16 bit 无符号整型 //
#define		DELAY_CONST     60000

// 定义常量 //
#define ERROR   0
#define OK      1

//sbit        Begin_LED       =		P1^0;
//sbit        ERROR_LED       =       P1^3;
//sbit        OK_LED			=       P1^7;

// 定义Flash 操作等待时间 //
//#define        MCU_CLOCK_40MHz
//#define         MCU_CLOCK_20MHz
#define        MCU_CLOCK_10MHz
//#define        MCU_CLOCK_5MHz
#ifdef MCU_CLOCK_40MHz
        #define WAIT_TIME        0x00
#endif
#ifdef MCU_CLOCK_20MHz
        #define WAIT_TIME        0x01
#endif
#ifdef MCU_CLOCK_10MHz
        #define WAIT_TIME        0x02
#endif
#ifdef MCU_CLOCK_5MHz
        #define WAIT_TIME        0x03
#endif

/* 调试控制项 */
//#define         DEBUG_STC89C_LE58RD

#define         DEBUG_STC89C_LE52RC

//#define USED_BYTE_QTY_IN_ONE_SECTOR                1
//#define USED_BYTE_QTY_IN_ONE_SECTOR                2
//#define USED_BYTE_QTY_IN_ONE_SECTOR                4
//#define USED_BYTE_QTY_IN_ONE_SECTOR                8
//#define USED_BYTE_QTY_IN_ONE_SECTOR                16
//#define USED_BYTE_QTY_IN_ONE_SECTOR                32
//#define USED_BYTE_QTY_IN_ONE_SECTOR                64
#define USED_BYTE_QTY_IN_ONE_SECTOR                128
//#define USED_BYTE_QTY_IN_ONE_SECTOR                256
//#define USED_BYTE_QTY_IN_ONE_SECTOR                512

//INT8U xdata protect_buffer[USED_BYTE_QTY_IN_ONE_SECTOR];

#ifdef DEBUG_STC89C_LE58RD                        //STC89C58RD+,  89LE58RD+
        #define DEBUG_AP_Memory_Begin_Sector_addr		0x0000
        #define DEBUG_AP_Memory_End_Sector_addr         0x7e00
        #define DEBUG_AP_Memory_End_Byte_addr           0x7fff

        #define DEBUG_Data_Memory_Begin_Sector_addr     0x8000
		#define MAXNUM 9
#endif
#ifdef DEBUG_STC89C_LE52RC                        //STC89C52RC,        89LE52RC
        #define DEBUG_AP_Memory_Begin_Sector_addr		0x0000
        #define DEBUG_AP_Memory_End_Sector_addr			0x1e00
        #define DEBUG_AP_Memory_End_Byte_addr			0x1fff

        #define DEBUG_Data_Memory_Begin_Sector_addr		0x2000
		#define  MAXNUM 7
#endif


/* 打开 ISP,IAP 功能 */
void ISP_IAP_enable(void)
{
	EA	=	0;	/* 关中断 */
	ISP_CONTR	=	ISP_CONTR & 0x18;       /* 0001,1000 */
	ISP_CONTR	=	ISP_CONTR | WAIT_TIME;
	ISP_CONTR	=	ISP_CONTR | 0x80;       /* 1000,0000 */
}

/* 关闭 ISP,IAP 功能 */
void ISP_IAP_disable(void)
{
	ISP_CONTR	=	ISP_CONTR & 0x7f;	/* 0111,1111 */
	ISP_TRIG	=	0x00;
	EA			=   1;                	/* 开中断 */
}

/* 字节读 */
INT8U byte_read(INT16U byte_addr)
{
	ISP_ADDRH	=	(INT8U)(byte_addr >> 8);
	ISP_ADDRL	=	(INT8U)(byte_addr & 0x00ff);

	ISP_CMD		=	ISP_CMD	&	0xf8;        /* 1111,1000 */
	ISP_CMD		=	ISP_CMD	|	READ_AP_and_Data_Memory_Command;        /* 0000,0001 */

	ISP_IAP_enable();

	ISP_TRIG	=	0x46;
	ISP_TRIG	=	0xb9;
	_nop_();

	ISP_IAP_disable();
	return (ISP_DATA);
}

/* 扇区擦除 */
INT8U sector_erase(INT16U sector_addr)
{
	INT16U get_sector_addr	=	0;
	get_sector_addr			=	(sector_addr & 0xfe00); /* 1111,1110,0000,0000; 取扇区地址 */
	ISP_ADDRH        		=	(INT8U)(get_sector_addr >> 8);
	ISP_ADDRL		        =	0x00;

	ISP_CMD	=	ISP_CMD	&	0xf8;	/* 1111,1000 */
	ISP_CMD	=	ISP_CMD	|	SECTOR_ERASE_AP_and_Data_Memory_Command;	/* 0000,0011 */

	ISP_IAP_enable();
	ISP_TRIG	=	0x46;        /* 触发ISP_IAP命令 */
	ISP_TRIG	=	0xb9;        /* 触发ISP_IAP命令 */
	 _nop_();

	ISP_IAP_disable();
	return OK;
}

/* 字节编程 */
INT8U byte_program(INT16U byte_addr, INT8U original_data)
{
	ISP_ADDRH	=	(INT8U)(byte_addr >> 8);
	ISP_ADDRL	=	(INT8U)(byte_addr & 0x00ff);

	ISP_CMD		=	ISP_CMD	&	0xf8;        /* 1111,1000 */
	ISP_CMD		=	ISP_CMD	|	PROGRAM_AP_and_Data_Memory_Command;		/* 0000,0010 */
	ISP_DATA	=	original_data;

	ISP_IAP_enable();
	ISP_TRIG	=	0x46;        /* 触发ISP_IAP命令 */
	ISP_TRIG	=	0xb9;        /* 触发ISP_IAP命令 */
	_nop_();

	ISP_IAP_disable();
	return	OK;
}

void bytewrite (unsigned  int um, unsigned char dat)	 ;
unsigned char byteread(unsigned int um);


void bytewrite (unsigned  int um, unsigned char dat)
{
  bit res = EA;
  
  um =((um+1)<<MAXNUM) +DEBUG_Data_Memory_Begin_Sector_addr;
  EA=0;
  sector_erase(um);
  byte_program(um,dat);
  EA = res;
}

unsigned char byteread(unsigned int um)
{
   unsigned int addr = ((1+um)<<MAXNUM)+DEBUG_Data_Memory_Begin_Sector_addr;
   return byte_read(addr);
}

/*
void eepromtest()
{


	sector_erase(DEBUG_Data_Memory_Begin_Sector_addr);
	if(byte_program_and_verify(DEBUG_Data_Memory_Begin_Sector_addr,0x55) == OK)
		
		

}
  */