#pragma used+

///写单字节EEPROM

void EEPROM_write(unsigned int uiAddress, unsigned char ucData);

///读单字节EEPROM

unsigned char EEPROM_read(unsigned int uiAddress);

///写双字节EEPROM

void EEPROM_write2(unsigned int uiAddress, unsigned int ucData);

///读双字节EEPROM

unsigned int EEPROM_read2(unsigned int uiAddress);

///读4字节EEPROM

unsigned long EEPROM_read4(unsigned int uiAddress);

///写4字节EEPROM

void EEPROM_write4(unsigned int uiAddress, unsigned long ucData);

#pragma used-

#pragma library eeprom.lib

EEPROM.C

//#include "eeprom.h"

/* EEPROM Control Register */

#define    EERIE        3

#define    EEMWE        2

#define    EEWE         1

#define    EERE         0

#if  funcused EEPROM_write

///写单字节EEPROM

void EEPROM_write(unsigned int uiAddress, unsigned char ucData)

{

//#asm("cli")

////* 等待上一次写操作结束

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress;

EEDR = ucData;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

//#asm("sei")

}

#endif

#if  funcused EEPROM_read

///读单字节EEPROM

unsigned char EEPROM_read(unsigned int uiAddress)

{

#asm("cli")

///* 等待上一次写操作结束

while(EECR & (1<

///* 设置地址寄存器*/

EEAR = uiAddress;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

return EEDR;

//#asm("sei")

}

#endif

#if  funcused EEPROM_read2

///读双字节EEPROM

unsigned int EEPROM_read2(unsigned int uiAddress)

{ unsigned int  ucdata;

// #asm("cli")

///* 等待上一次写操作结束

while(EECR & (1<

///* 设置地址寄存器*/

EEAR = uiAddress+1;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata = EEDR;

ucdata =ucdata<<8;

while(EECR & (1<

///* 设置地址寄存器*/

EEAR = uiAddress;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata |= EEDR;

return ucdata;

//#asm("sei")

}

#endif

#if  funcused EEPROM_write2

///写双字节EEPROM

void EEPROM_write2(unsigned int uiAddress, unsigned int ucData)

{

//#asm("cli")

////* 等待上一次写操作结束

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress;

EEDR = ucData & 0x00ff;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress+1;

EEDR = (ucData & 0xff00)>>8;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

//#asm("sei")

}

#endif

#if  funcused EEPROM_read4

///读4字节EEPROM

unsigned long EEPROM_read4(unsigned int uiAddress)

{ unsigned long  ucdata;

// #asm("cli")

///* 等待上一次写操作结束

while(EECR & (1<

///* 设置地址寄存器*/

EEAR = uiAddress+3;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata = EEDR;

ucdata =ucdata<<8;

EEAR = uiAddress+2;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata |= EEDR;

ucdata =ucdata<<8;

EEAR = uiAddress+1;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata |= EEDR;

ucdata =ucdata<<8;

while(EECR & (1<

///* 设置地址寄存器*/

EEAR = uiAddress;

///* 设置EERE 以启动读操作

EECR |= (1<

///* 自数据寄存器返回数据

ucdata |= EEDR;

return ucdata;

//#asm("sei")

}

#endif

#if  funcused EEPROM_write4

///写4字节EEPROM

void EEPROM_write4(unsigned int uiAddress, unsigned long ucData)

{

//#asm("cli")

////* 等待上一次写操作结束

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress;

EEDR = ucData & 0x000000ff;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

ucData = ucData>>8;

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress+1;

EEDR = ucData & 0x000000ff;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

ucData = ucData>>8;

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress+2;

EEDR = ucData & 0x000000ff;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

ucData = ucData>>8;

while(EECR & (1<

////* 设置地址和数据寄存器

EEAR = uiAddress+3;

EEDR = ucData & 0x000000ff;

////* 置位EEMWE

EECR |= (1<

////* 置位EEWE 以启动写操作

EECR |= (1<

//#asm("sei")

}

#endif