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eeprom.c
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/* --- STC International Limited ---------------- */
/* --- ºê¾§¿?¼¼ ?¦???½ ?è¼? 2004/9/11 V1.0 --- */
/* --- ºê¾§¿?¼¼ ?¦???½ ?è¼? 2004/12/4 V2.0 --- */
/* --- RD+/RC?µ?? Flash IAP/ISP Operation ----- */
/* --- STC89C54RD+, STC89C58RD+, --- */
/* --- STC89LE54RD+,STC89LE58RD+, -- */
/* --- STC89C51RC, STC89C52RC, ----- */
/* --- STC89LE51RC, STC89LE52RC, ---- */
/* --- Mobile: 13922805190 ---------------------- */
/* --- Fax: 0755-82944243 ----------------------- */
/* --- Tel: 0755-82908285 ----------------------- */
/* --- Web : www.mcu-memory.com ---------------- */
/* --- ¸??»?ø??2004/12/3µ??¸?ý,???ù?·???¾¸??» --- */
#include <mcs51/at89x52.h>
#include "common.h"
#include "eeprom.h"
/* ???ö???⹦??¼?´æ?÷¶¨?å */
__sfr __at(0xe2) ISP_DATA;
__sfr __at(0xe3) ISP_ADDRH;
__sfr __at(0xe4) ISP_ADDRL;
__sfr __at(0xe5) ISP_CMD;
__sfr __at(0xe6) ISP_TRIG;
__sfr __at(0xe7) ISP_CONTR;
/* ¶¨?å?ü?î */
#define READ_AP_and_Data_Memory_Command 0x01
#define PROGRAM_AP_and_Data_Memory_Command 0x02
#define SECTOR_ERASE_AP_and_Data_Memory_Command 0x03
typedef unsigned char INT8U; /* 8 bit ??·ûº??û?? */
typedef unsigned int INT16U; /* 16 bit ??·ûº??û?? */
//#define DELAY_CONST 60000
/* ¶¨?å³£?¿ */
#define ERROR 0
#define OK 1
/* ¶¨?åFlash ²??÷µ?´ý?±¼ä */
#define MCU_CLOCK_20MHz
//#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
/* µ÷??¿????î */
//#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
#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
#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
#endif
#define CALIBRATION_VALUES_START_ADDR DEBUG_Data_Memory_Begin_Sector_addr
/* ´ò¿ª ISP,IAP ¹¦?? */
void ISP_IAP_enable(void)
{
EA = 0; /* ¹???¶? */
ISP_CONTR = ISP_CONTR & 0x18; /* 0001,1000 */
ISP_CONTR = ISP_CONTR | WAIT_TIME;
ISP_CONTR = ISP_CONTR | 0x80; /* 1000,0000 */
}
/* ¹?±? ISP,IAP ¹¦?? */
void ISP_IAP_disable(void)
{
ISP_CONTR = ISP_CONTR & 0x7f; /* 0111,1111 */
ISP_TRIG = 0x00;
EA = 1; /* ¿ª??¶? */
}
/* ??½?¶? */
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);
}
/* ???ø²?³ý */
INT8U sector_erase(INT16U sector_addr)
{
INT16U get_sector_addr = 0;
get_sector_addr = (sector_addr & 0xfe00); /* 1111,1110,0000,0000; ?¡???øµ??· */
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; /* ´¥·¢ISP_IAP?ü?î */
ISP_TRIG = 0xb9; /* ´¥·¢ISP_IAP?ü?î */
_nop_();
ISP_IAP_disable();
return OK;
}
/* ?´?ý¾?½ø ?ý¾?Flash´æ´¢?÷, ?»???¬?»¸ö???ø???´£¬²»±£?ô????ý¾? */
/* begin_addr,±»?´?ý¾?Flash¿ª?¼µ??·£»counter,?¬?ø?´¶???¸ö??½?£» array[]£¬?ý¾??´?´ */
INT8U sequential_write_flash_in_one_sector(INT16U begin_addr, INT16U counter, const INT8U array[])
{
INT16U i = 0;
INT16U in_sector_begin_addr = 0;
INT16U sector_addr = 0;
/* ????·ñ?????§·¶?§,´?º¯?ý²»???í¿ç???ø²??÷ */
if (counter > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
in_sector_begin_addr = begin_addr & 0x01ff; /* 0000,0001,1111,1111 */
if ((in_sector_begin_addr + counter) > USED_BYTE_QTY_IN_ONE_SECTOR)
return ERROR;
/* ²?³ý ?ª??¸?/?´?ë µ????ø */
sector_addr = (begin_addr & 0xfe00); /* 1111,1110,0000,0000; ?¡???øµ??· */
ISP_ADDRH = (INT8U)(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; /* ´¥·¢ISP_IAP?ü?î */
ISP_TRIG = 0xb9; /* ´¥·¢ISP_IAP?ü?î */
_nop_();
for (i = 0; i < counter; i++)
{
/* ?´?»¸ö??½? */
ISP_ADDRH = (INT8U)(begin_addr >> 8);
ISP_ADDRL = (INT8U)(begin_addr & 0x00ff);
ISP_DATA = array[i];
ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */
ISP_CMD = ISP_CMD | PROGRAM_AP_and_Data_Memory_Command; /* 0000,0010 */
ISP_TRIG = 0x46; /* ´¥·¢ISP_IAP?ü?î */
ISP_TRIG = 0xb9; /* ´¥·¢ISP_IAP?ü?î */
_nop_();
/* ¶?»??´ */
ISP_DATA = 0x00;
ISP_CMD = ISP_CMD & 0xf8; /* 1111,1000 */
ISP_CMD = ISP_CMD | READ_AP_and_Data_Memory_Command; /* 0000,0001 */
ISP_TRIG = 0x46; /* ´¥·¢ISP_IAP?ü?î */
ISP_TRIG = 0xb9; /* ´¥·¢ISP_IAP?ü?î */
_nop_();
/* ±?½?¶?´í */
if (ISP_DATA != array[i])
{
ISP_IAP_disable();
return ERROR;
}
begin_addr++;
}
ISP_IAP_disable();
return OK;
}
void ReadCalibrationValues(struct calibration_values_type *values)
{
INT8U *pBuf = (INT8U *)(void *)values;
INT8U byte;
for (byte = 0; byte < sizeof(struct calibration_values_type); ++byte, ++pBuf)
{
*pBuf = byte_read(CALIBRATION_VALUES_START_ADDR + byte);
}
}
void WriteCalibrationValues(const struct calibration_values_type *values)
{
sector_erase(CALIBRATION_VALUES_START_ADDR);
sequential_write_flash_in_one_sector(CALIBRATION_VALUES_START_ADDR, sizeof(struct calibration_values_type), (const INT8U *)(const void *)values);
}
void EraseCalibrationValues()
{
sector_erase(CALIBRATION_VALUES_START_ADDR);
}