STM8L051F3寄存器版EEPROM源程序 -

标题: STM8L051F3寄存器版EEPROM源程序 [打印本页]

作者: 闲散子 时间: 2019-3-10 18:14
标题: STM8L051F3寄存器版EEPROM源程序
#include "Config.h"
u8    Eeprom_text    =    0;

void EEPROM_write(unsigned char addr, unsigned char dat)
{
u8 *Ptr_SegAddr; //Segment pointer

Ptr_SegAddr = (u8 *)(EP_HEADER_ADDR+addr);  //Initialize  pointer

FLASH_DUKR=0xAE;

FLASH_DUKR=0x56;

while(!FLASH_IAPSR_DUL);//如果DUL没有置位,说明解锁不成功,最好加入超时判断

asm("sim");//关闭中断

*Ptr_SegAddr=dat; //指定地址，写1 字节

while(!FLASH_IAPSR_EOP);//等待写操作完成,最好加入超时判断

asm("rim");//打开中断

FLASH_IAPSR_DUL=0;//上锁,对DATA EEPROM写保护

////////////////////

}

//EEPROM指定地址读出一个数据 addr:相对地址
unsigned char EEPROM_read(unsigned char addr)
{
uint16_t Data=0;

uint8_t *Ptr_SegAddr;

Ptr_SegAddr = (uint8_t *)(EP_HEADER_ADDR+addr);  //Initialize  pointer

Data=*Ptr_SegAddr;

return Data;
}

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