STM8 ROP编程-EDA365

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FLASH->CR1 = FLASH_CR1_RESET_VALUE;

FLASH->CR2 = FLASH_CR2_RESET_VALUE;

FLASH->NCR2 = FLASH_NCR2_RESET_VALUE;

FLASH->IAPSR &= (uint8_t)(~FLASH_IAPSR_DUL);

FLASH->IAPSR &= (uint8_t)(~FLASH_IAPSR_PUL);

(void) FLASH->IAPSR; /* Reading of this register causes the clearing of status flags */

#ifdef USE_ROP_ENABLE

//Flash Data区解密

FLASH->DUKR = FLASH_RASS_KEY2; /* Warning: keys are reversed on data memory !!! */

FLASH->DUKR = FLASH_RASS_KEY1;

//编写选项字ROP

/* Enable write access to option bytes */

FLASH->CR2 |= FLASH_CR2_OPT;

FLASH->NCR2 &= (uint8_t)(~FLASH_NCR2_NOPT);

*((NEAR uint8_t*)0x4800) = 0xAA;//ROP的位写

while((uint8_t)(FLASH->IAPSR & (uint8_t)(FLASH_IAPSR_EOP |

FLASH_IAPSR_WR_PG_DIS)) == 0);

/* Disable write access to option bytes */

FLASH->CR2 &= (uint8_t)(~FLASH_CR2_OPT);

FLASH->NCR2 |= FLASH_NCR2_NOPT;

// FLASH_ProgramOptionByte(0x4800, 0x00);

//Flash Data区加密

FLASH->IAPSR &= (uint8_t)FLASH_MEMTYPE_DATA;

#endif

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