/**
* @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
* @param OB_IWDG: Selects the IWDG mode
* This parameter can be one of the following values:
* @arg OB_IWDG_SW: Software IWDG selected
* @arg OB_IWDG_HW: Hardware IWDG selected
* @param OB_STOP: Reset event when entering STOP mode.
* This parameter can be one of the following values:
* @arg OB_STOP_NoRST: No reset generated when entering in STOP
* @arg OB_STOP_RST: Reset generated when entering in STOP
* @param OB_STDBY: Reset event when entering Standby mode.
* This parameter can be one of the following values:
* @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY
* @arg OB_STDBY_RST: Reset generated when entering in STANDBY
* @retval None
*/
void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
{
uint8_t optiontmp = 0xFF;
FLASH_Status status = FLASH_COMPLETE;
/* Check the parameters */
assert_param(IS_OB_IWDG_SOURCE(OB_IWDG));
assert_param(IS_OB_STOP_SOURCE(OB_STOP));
assert_param(IS_OB_STDBY_SOURCE(OB_STDBY));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation();
if(status == FLASH_COMPLETE)
{
/* Mask OPTLOCK, OPTSTRT and BOR_LEV bits */
optiontmp = (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0F);
/* Update User Option Byte */
*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS = OB_IWDG | (uint8_t)(OB_STDBY | (uint8_t)(OB_STOP | ((uint8_t)optiontmp)));
}
}
/**
* @brief Program the FLASH User Option Byte.
* @note Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
* @param UserConfig: The FLASH User Option Bytes values: FLASH_OBR_IWDG_SW(Bit2),
* FLASH_OBR_nRST_STOP(Bit3),FLASH_OBR_nRST_STDBY(Bit4).
* And BFBF2(Bit5) for STM32F101xG and STM32F103xG .
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_OB_IWDG_SOURCE((UserConfig&OB_IWDG_SW)));
assert_param(IS_OB_STOP_SOURCE((UserConfig&OB_STOP_NO_RST)));
assert_param(IS_OB_STDBY_SOURCE((UserConfig&OB_STDBY_NO_RST)));
#if defined(FLASH_BANK2_END)
assert_param(IS_OB_BOOT1((UserConfig&OB_BOOT1_SET)));
#endif /* FLASH_BANK2_END */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Enable the Option Bytes Programming operation */
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
#if defined(FLASH_BANK2_END)
OB->USER = (UserConfig | 0xF0);
#else
OB->USER = (UserConfig | 0x88);
#endif /* FLASH_BANK2_END */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
return status;
}
/**
* @brief Program the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
* @param Iwdg: Selects the IWDG mode
* This parameter can be one of the following values:
* @arg OB_IWDG_SW: Software IWDG selected
* @arg OB_IWDG_HW: Hardware IWDG selected
* @param Stop: Reset event when entering STOP mode.
* This parameter can be one of the following values:
* @arg OB_STOP_NO_RST: No reset generated when entering in STOP
* @arg OB_STOP_RST: Reset generated when entering in STOP
* @param Stdby: Reset event when entering Standby mode.
* This parameter can be one of the following values:
* @arg OB_STDBY_NO_RST: No reset generated when entering in STANDBY
* @arg OB_STDBY_RST: Reset generated when entering in STANDBY
* @retval HAL Status
*/
static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t Iwdg, uint8_t Stop, uint8_t Stdby)
{
uint8_t optiontmp = 0xFF;
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_OB_IWDG_SOURCE(Iwdg));
assert_param(IS_OB_STOP_SOURCE(Stop));
assert_param(IS_OB_STDBY_SOURCE(Stdby));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Mask OPTLOCK, OPTSTRT, BOR_LEV and BFB2 bits */
optiontmp = (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS) & (uint8_t)0x1F);
/* Update User Option Byte */
*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS = Iwdg | (uint8_t)(Stdby | (uint8_t)(Stop | ((uint8_t)optiontmp)));
}
return status;
}