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标题: STM8的EEPROM操作 [打印本页]

作者: 铜河 时间: 2013-2-26 11:08
标题: STM8的EEPROM操作
程序如下：
#include "STM8S105C_S.h"

unsigned int eeprom_address;
unsigned char eeprom_value;

unsigned char eeprom_write_block_in_ram[100];

//#define eeadress (*(volatile unsigned intr *)ADR_8254_ARRAY[(x)])

//(*((PointerAttr u8*) Address))

void EEPROM_WRITE_BYTE(unsigned int eeaddress, unsigned char eedata)
{

eeprom_address = eeaddress;

/* 设置编程时间 */
FLASH_CR1 &= (unsigned char)(~0x01);
  FLASH_CR1 |= 0x01;

/* MASS密钥，解除EEPROM的保护 */
FLASH_DUKR = 0xAE;
  FLASH_DUKR = 0x56;

*((unsigned char*) eeprom_address) = eedata;

while((FLASH_IAPSR & 0x04) != 0x00); //EOP=1，EEPROM编程结束
}

void EEPROM_WRITE_WORD(unsigned int eeaddress, unsigned char eedata)
{

/* 设置编程时间 */
FLASH_CR1 &= (unsigned char)(~0x01);
  FLASH_CR1 |= 0x01;

/* MASS密钥，解除EEPROM的保护 */
FLASH_DUKR = 0xAE;
  FLASH_DUKR = 0x56;

/* 设置字编程模式 */
FLASH_CR2 |= 0x40;
FLASH_NCR2 &= (unsigned char)(~0x40);

  /* 从低地址开始写入4个字节数据 */
// *((unsigned char *)eeaddress) = *((unsigned char*)(&eedata));
// *(((unsigned char *)eeaddress) + 1) = *((unsigned char*)(&eedata)+1);
// *(((unsigned char *)eeaddress) + 2) = *((unsigned char*)(&eedata)+2);
// *(((unsigned char *)eeaddress) + 3) = *((unsigned char*)(&eedata)+3);

*((unsigned char *)eeaddress) = (eedata);
*(((unsigned char *)eeaddress) + 1) = (eedata+1);
*(((unsigned char *)eeaddress) + 2) = (eedata+2);
*(((unsigned char *)eeaddress) + 3) = (eedata+3);

while((FLASH_IAPSR & 0x04) != 0x00); //EOP=1，EEPROM编程结束

//BRES FLASH_IAPSR,#3 ;Data EEPROM area write protection enabled

}

void EEPROM_WRITE_BLOCK(void)
{
unsigned char count;
unsigned int eeaddress_start;

eeaddress_start = 0x4000;

/* 设置编程时间 */
FLASH_CR1 &= (unsigned char)(~0x01);
  FLASH_CR1 |= 0x01;

/* MASS密钥，解除EEPROM的保护 */
FLASH_DUKR = 0xAE;
  FLASH_DUKR = 0x56;

/* 设置块编程模式 */
FLASH_CR2 |= 0x01;
  FLASH_NCR2 &= (unsigned char)(~0x01);

for (count = 0; count < 128; count++)
{
*((unsigned char *)(eeaddress_start + count)) = 0x99;
}

//判断EEPROM块操作是否完成

/* STM8S103, STM8S903 属于低容量，其BLOCK的大小为64字节 */
// while((FLASH_IAPSR & 0x04) != 0x00); //EOP=1，EEPROM编程结束

/* STM8S208,STM8S207,STM8S105 是中大容量,其BLCOK大小为128个字节*/
while ((FLASH_IAPSR & 0x40) != 0x00 );  //HVOFF=1高压结束

}

void COPY_EEPROMWRITEBLOCK_INTO_RAM(void)
{
unsigned char eerom_count;
eerom_count=0;

while ( *((unsigned char*)EEPROM_WRITE_BLOCK + eerom_count) != 0x81 )
{
eeprom_write_block_in_ram[eerom_count] = *((unsigned char*)EEPROM_WRITE_BLOCK + eerom_count);
eerom_count++;
}
eeprom_write_block_in_ram[eerom_count] = 0x81; // RET 指令
}

main()
{
COPY_EEPROMWRITEBLOCK_INTO_RAM();

_asm("call _eeprom_write_block_in_ram");

_asm("nop");

while (1)
{

_asm("nop");
_asm("nop");
_asm("nop");

}
}

作者: ba1731 时间: 2013-2-28 14:17
表四鄙人纯属随机路过。。。顺带帮顶。。。

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