如何修改STM8s中的option bytes

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moqiqi 提问时间：2011-11-14 16:21 /

STM8S中的option bytes字节怎么修改，求高手给个例程

赞收藏评论3 发布时间：2011-11-14 16:21

3个回答

moqiqi 回答时间：2011-11-15 08:56:45

RE:如何修改STM8s中的option bytes

void option( void )
{
unsigned char *ROP;
unsigned char *OPT2;
unsigned char *NOPT2;
ROP = ( unsigned char *)0x4800;
OPT2 = ( unsigned char *)0x4803;
NOPT2 = ( unsigned char *)0x4804;

do
{
FLASH_DUKR = 0x56; //写MASS密钥来解除DATA保护
FLASH_DUKR = 0xAE;
} while(( FLASH_IAPSR & 0x08 ) == 0x08 );
*ROP = 0x00; //读保护禁止
FLASH_CR2 |= 0x80;
FLASH_NCR2 &= 0x7F;
*OPT2 = 0x01;
*NOPT2= 0xFE;
FLASH_CR2 |= 0x7F;
FLASH_NCR2 |= 0x80;
}

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