FLASH读保护设置问题

iliketolearn

各位同学好，我在看STM32F07的FLASH读写保护的知识，目前是运行的开发板的例程，但是发现不能修改保护级别为1级， 一直是0级。

这里是代码：
FLASH_OB_Unlock();                  
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |
FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
FLASH_OB_RDPConfig(OB_RDP_Level_1);        
status=FLASH_OB_Launch();        
status = FLASH_WaitForLastOperation();



这里是书上的描述：
Modifying user option bytes on STM32F405xx/07xx and STM32F415xx/17xx
To modify the user option value, follow the sequence below:
1. Check that no Flash memory operation is ongoing by checking the BSY bit in the
FLASH_SR register
2. Write the desired option value in the FLASH_OPTCR register.
3. Set the option start bit (OPTSTRT) in the FLASH_OPTCR register
4. Wait for the BSY bit to be cleared.

潮小男ㄨ

修改之后要重新上电复位

iliketolearn

多谢，回头试试！