ST STM32F31xx

UM1581
FLASH Memory (FLASH)
DocID023800 Rev 1
225/584
11.2.8.4 FLASH_OB_Erase
Function Name
FLASH_Status FLASH_OB_Erase ( void )
Function Description
Erases the FLASH option bytes.
Parameters
 None.
Return values
 FLASH Status: The returned value can be:
FLASH_ERROR_PG, FLASH_ERROR_WRP,
FLASH_COMPLETE or FLASH_TIMEOUT.
Notes
 This functions erases all option bytes except the Read
protection (RDP).
11.2.8.5 FLASH_OB_EnableWRP
Function Name
FLASH_Status FLASH_OB_EnableWRP ( uint32_t OB_WRP)
Function Description
Write protects the desired pages.
Parameters
 OB_WRP : specifies the address of the pages to be write
protected. This parameter can be:
 value :
 OB_WRP_AllPages :
Return values
 FLASH Status: The returned value can be:
FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP,
FLASH_COMPLETE or FLASH_TIMEOUT.
Notes
 To correctly run this function, the FLASH_OB_Unlock()
function must be called before.
 Call the FLASH_OB_Lock() to disable the flash control
register access and the option bytes (recommended to protect
the FLASH memory against possible unwanted operation)
11.2.8.6 FLASH_OB_RDPConfig
Function Name
FLASH_Status FLASH_OB_RDPConfig ( uint8_t OB_RDP)