static HAL_StatusTypeDef FLASH_OB_WRPConfig()

in CMake-armcc/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ex.c [657:713]

• 43 lines of code
• 20 McCabe index (conditional complexity)

static HAL_StatusTypeDef FLASH_OB_WRPConfig(uint32_t WRPArea, uint32_t WRPStartOffset, uint32_t WRDPEndOffset)
{
  HAL_StatusTypeDef status;

  /* Check the parameters */
  assert_param(IS_OB_WRPAREA(WRPArea));
  assert_param(IS_FLASH_PAGE(WRPStartOffset));
  assert_param(IS_FLASH_PAGE(WRDPEndOffset));

  /* Wait for last operation to be completed */
  status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);

  if(status == HAL_OK)
  {
    /* Configure the write protected area */
    if(WRPArea == OB_WRPAREA_BANK1_AREAA)
    {
      MODIFY_REG(FLASH->WRP1AR, (FLASH_WRP1AR_WRP1A_STRT | FLASH_WRP1AR_WRP1A_END),
                 (WRPStartOffset | (WRDPEndOffset << 16)));
    }
    else if(WRPArea == OB_WRPAREA_BANK1_AREAB)
    {
      MODIFY_REG(FLASH->WRP1BR, (FLASH_WRP1BR_WRP1B_STRT | FLASH_WRP1BR_WRP1B_END),
                 (WRPStartOffset | (WRDPEndOffset << 16)));
    }
#if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || \
    defined (STM32L496xx) || defined (STM32L4A6xx) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
    else if(WRPArea == OB_WRPAREA_BANK2_AREAA)
    {
      MODIFY_REG(FLASH->WRP2AR, (FLASH_WRP2AR_WRP2A_STRT | FLASH_WRP2AR_WRP2A_END),
                 (WRPStartOffset | (WRDPEndOffset << 16)));
    }
    else if(WRPArea == OB_WRPAREA_BANK2_AREAB)
    {
      MODIFY_REG(FLASH->WRP2BR, (FLASH_WRP2BR_WRP2B_STRT | FLASH_WRP2BR_WRP2B_END),
                 (WRPStartOffset | (WRDPEndOffset << 16)));
    }
#endif
    else
    {
      /* Nothing to do */
    }

    /* Set OPTSTRT Bit */
    SET_BIT(FLASH->CR, FLASH_CR_OPTSTRT);

    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);

    /* If the option byte program operation is completed, disable the OPTSTRT Bit */
    CLEAR_BIT(FLASH->CR, FLASH_CR_OPTSTRT);
  }

  return status;
}