diff options
Diffstat (limited to 'simonnnnn/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_flash_ex.c')
| -rw-r--r-- | simonnnnn/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_flash_ex.c | 1274 |
1 files changed, 1274 insertions, 0 deletions
diff --git a/simonnnnn/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_flash_ex.c b/simonnnnn/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_flash_ex.c new file mode 100644 index 0000000..2757e85 --- /dev/null +++ b/simonnnnn/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_flash_ex.c @@ -0,0 +1,1274 @@ +/**
+ ******************************************************************************
+ * @file stm32l0xx_hal_flash_ex.c
+ * @author MCD Application Team
+ * @brief Extended FLASH HAL module driver.
+ *
+ * This file provides firmware functions to manage the following
+ * functionalities of the internal FLASH memory:
+ * + FLASH Interface configuration
+ * + FLASH Memory Erasing
+ * + DATA EEPROM Programming/Erasing
+ * + Option Bytes Programming
+ * + Interrupts management
+ *
+ @verbatim
+ ==============================================================================
+ ##### Flash peripheral Extended features #####
+ ==============================================================================
+
+ [..] Comparing to other products, the FLASH interface for STM32L0xx
+ devices contains the following additional features
+ (+) Erase functions
+ (+) DATA_EEPROM memory management
+ (+) BOOT option bit configuration
+ (+) PCROP protection for all sectors
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..] This driver provides functions to configure and program the FLASH memory
+ of all STM32L0xx. It includes:
+ (+) Full DATA_EEPROM erase and program management
+ (+) Boot activation
+ (+) PCROP protection configuration and control for all pages
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l0xx_hal.h"
+
+/** @addtogroup STM32L0xx_HAL_Driver
+ * @{
+ */
+#ifdef HAL_FLASH_MODULE_ENABLED
+
+/** @addtogroup FLASH
+ * @{
+ */
+/** @addtogroup FLASH_Private_Variables
+ * @{
+ */
+/* Variables used for Erase pages under interruption*/
+extern FLASH_ProcessTypeDef pFlash;
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASHEx FLASHEx
+ * @brief FLASH HAL Extension module driver
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup FLASHEx_Private_Constants FLASHEx Private Constants
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/** @defgroup FLASHEx_Private_Macros FLASHEx Private Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup FLASHEx_Private_Functions FLASHEx Private Functions
+ * @{
+ */
+void FLASH_PageErase(uint32_t PageAddress);
+#if defined(FLASH_OPTR_BFB2)
+static HAL_StatusTypeDef FLASH_OB_BootConfig(uint8_t OB_BOOT);
+#endif /* FLASH_OPTR_BFB2 */
+static HAL_StatusTypeDef FLASH_OB_RDPConfig(uint8_t OB_RDP);
+static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY);
+static HAL_StatusTypeDef FLASH_OB_BORConfig(uint8_t OB_BOR);
+static uint8_t FLASH_OB_GetRDP(void);
+static uint8_t FLASH_OB_GetUser(void);
+static uint8_t FLASH_OB_GetBOR(void);
+static uint8_t FLASH_OB_GetBOOTBit1(void);
+static HAL_StatusTypeDef FLASH_OB_BOOTBit1Config(uint8_t OB_BootBit1);
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+static HAL_StatusTypeDef FLASH_OB_ProtectedSectorsConfig(uint32_t Sector, uint32_t Sector2, uint32_t NewState);
+#else
+static HAL_StatusTypeDef FLASH_OB_ProtectedSectorsConfig(uint32_t Sector, uint32_t NewState);
+#endif
+static uint32_t FLASH_OB_GetWRP(void);
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+static uint32_t FLASH_OB_GetWRP2(void);
+#endif
+
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+/** @defgroup FLASHEx_Exported_Functions FLASHEx Exported Functions
+ * @{
+ */
+
+/** @defgroup FLASHEx_Exported_Functions_Group1 FLASHEx Memory Erasing functions
+ * @brief FLASH Memory Erasing functions
+ *
+@verbatim
+ ==============================================================================
+ ##### FLASH Erasing Programming functions #####
+ ==============================================================================
+
+ [..] The FLASH Memory Erasing functions, includes the following functions:
+ (+) @ref HAL_FLASHEx_Erase: return only when erase has been done
+ (+) @ref HAL_FLASHEx_Erase_IT: end of erase is done when @ref HAL_FLASH_EndOfOperationCallback
+ is called with parameter 0xFFFFFFFF
+
+ [..] Any operation of erase should follow these steps:
+ (#) Call the @ref HAL_FLASH_Unlock() function to enable the flash control register and
+ program memory access.
+ (#) Call the desired function to erase page.
+ (#) Call the @ref HAL_FLASH_Lock() to disable the flash program memory access
+ (recommended to protect the FLASH memory against possible unwanted operation).
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Erase the specified FLASH memory Pages
+ * @note To correctly run this function, the @ref HAL_FLASH_Unlock() function
+ * must be called before.
+ * Call the @ref HAL_FLASH_Lock() to disable the flash memory access
+ * (recommended to protect the FLASH memory against possible unwanted operation)
+ * @param[in] pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
+ * contains the configuration information for the erasing.
+ *
+ * @param[out] PageError pointer to variable that
+ * contains the configuration information on faulty page in case of error
+ * (0xFFFFFFFF means that all the pages have been correctly erased)
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *PageError)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+ uint32_t address = 0U;
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if (status == HAL_OK)
+ {
+ /*Initialization of PageError variable*/
+ *PageError = 0xFFFFFFFFU;
+
+ /* Check the parameters */
+ assert_param(IS_NBPAGES(pEraseInit->NbPages));
+ assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS((pEraseInit->PageAddress & ~(FLASH_PAGE_SIZE - 1U)) + pEraseInit->NbPages * FLASH_PAGE_SIZE - 1U));
+
+ /* Erase page by page to be done*/
+ for(address = pEraseInit->PageAddress;
+ address < ((pEraseInit->NbPages * FLASH_PAGE_SIZE) + pEraseInit->PageAddress);
+ address += FLASH_PAGE_SIZE)
+ {
+ FLASH_PageErase(address);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ /* If the erase operation is completed, disable the ERASE Bit */
+ CLEAR_BIT(FLASH->PECR, FLASH_PECR_PROG);
+ CLEAR_BIT(FLASH->PECR, FLASH_PECR_ERASE);
+
+ if (status != HAL_OK)
+ {
+ /* In case of error, stop erase procedure and return the faulty address */
+ *PageError = address;
+ break;
+ }
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+
+ return status;
+}
+
+/**
+ * @brief Perform a page erase of the specified FLASH memory pages with interrupt enabled
+ * @note To correctly run this function, the @ref HAL_FLASH_Unlock() function
+ * must be called before.
+ * Call the @ref HAL_FLASH_Lock() to disable the flash memory access
+ * (recommended to protect the FLASH memory against possible unwanted operation)
+ * End of erase is done when @ref HAL_FLASH_EndOfOperationCallback is called with parameter
+ * 0xFFFFFFFF
+ * @param pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
+ * contains the configuration information for the erasing.
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_Erase_IT(FLASH_EraseInitTypeDef *pEraseInit)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+
+ /* If procedure already ongoing, reject the next one */
+ if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_NBPAGES(pEraseInit->NbPages));
+ assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS((pEraseInit->PageAddress & ~(FLASH_PAGE_SIZE - 1)) + pEraseInit->NbPages * FLASH_PAGE_SIZE - 1));
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if (status == HAL_OK)
+ {
+ /* Enable End of FLASH Operation and Error source interrupts */
+ __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
+
+ pFlash.ProcedureOnGoing = FLASH_PROC_PAGEERASE;
+ pFlash.NbPagesToErase = pEraseInit->NbPages;
+ pFlash.Page = pEraseInit->PageAddress;
+
+ /*Erase 1st page and wait for IT*/
+ FLASH_PageErase(pEraseInit->PageAddress);
+ }
+ else
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ }
+
+ return status;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASHEx_Exported_Functions_Group2 Option Bytes Programming functions
+ * @brief Option Bytes Programming functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Option Bytes Programming functions #####
+ ==============================================================================
+
+ [..] Any operation of erase or program should follow these steps:
+ (#) Call the @ref HAL_FLASH_OB_Unlock() function to enable the Flash option control
+ register access.
+ (#) Call following function to program the desired option bytes.
+ (++) @ref HAL_FLASHEx_OBProgram:
+ - To Enable/Disable the desired sector write protection.
+ - To set the desired read Protection Level.
+ - To configure the user option Bytes: IWDG, STOP and the Standby.
+ - To Set the BOR level.
+ (#) Once all needed option bytes to be programmed are correctly written, call the
+ @ref HAL_FLASH_OB_Launch(void) function to launch the Option Bytes programming process.
+ (#) Call the @ref HAL_FLASH_OB_Lock() to disable the Flash option control register access (recommended
+ to protect the option Bytes against possible unwanted operations).
+
+ [..] Proprietary code Read Out Protection (PcROP):
+ (#) The PcROP sector is selected by using the same option bytes as the Write
+ protection (nWRPi bits). As a result, these 2 options are exclusive each other.
+ (#) In order to activate the PcROP (change the function of the nWRPi option bits),
+ the WPRMOD option bit must be activated.
+ (#) The active value of nWRPi bits is inverted when PCROP mode is active, this
+ means: if WPRMOD = 1 and nWRPi = 1 (default value), then the user sector "i"
+ is read/write protected.
+ (#) To activate PCROP mode for Flash sector(s), you need to call the following function:
+ (++) @ref HAL_FLASHEx_AdvOBProgram in selecting sectors to be read/write protected
+ (++) @ref HAL_FLASHEx_OB_SelectPCROP to enable the read/write protection
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Program option bytes
+ * @param pOBInit pointer to an FLASH_OBInitStruct structure that
+ * contains the configuration information for the programming.
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Check the parameters */
+ assert_param(IS_OPTIONBYTE(pOBInit->OptionType));
+
+ /*Write protection configuration*/
+ if((pOBInit->OptionType & OPTIONBYTE_WRP) == OPTIONBYTE_WRP)
+ {
+ assert_param(IS_WRPSTATE(pOBInit->WRPState));
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+ status = FLASH_OB_ProtectedSectorsConfig(pOBInit->WRPSector, pOBInit->WRPSector2, pOBInit->WRPState);
+#else
+ status = FLASH_OB_ProtectedSectorsConfig(pOBInit->WRPSector, pOBInit->WRPState);
+#endif
+ if (status != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ return status;
+ }
+ }
+
+ /* Read protection configuration*/
+ if((pOBInit->OptionType & OPTIONBYTE_RDP) == OPTIONBYTE_RDP)
+ {
+ status = FLASH_OB_RDPConfig(pOBInit->RDPLevel);
+ if (status != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ return status;
+ }
+ }
+
+ /* USER configuration*/
+ if((pOBInit->OptionType & OPTIONBYTE_USER) == OPTIONBYTE_USER)
+ {
+ status = FLASH_OB_UserConfig(pOBInit->USERConfig & OB_IWDG_SW,
+ pOBInit->USERConfig & OB_STOP_NORST,
+ pOBInit->USERConfig & OB_STDBY_NORST);
+ if (status != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ return status;
+ }
+ }
+
+ /* BOR Level configuration*/
+ if((pOBInit->OptionType & OPTIONBYTE_BOR) == OPTIONBYTE_BOR)
+ {
+ status = FLASH_OB_BORConfig(pOBInit->BORLevel);
+ if (status != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ return status;
+ }
+ }
+
+ /* Program BOOT Bit1 config option byte */
+ if ((pOBInit->OptionType & OPTIONBYTE_BOOT_BIT1) == OPTIONBYTE_BOOT_BIT1)
+ {
+ status = FLASH_OB_BOOTBit1Config(pOBInit->BOOTBit1Config);
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+
+ return status;
+}
+
+/**
+ * @brief Get the Option byte configuration
+ * @param pOBInit pointer to an FLASH_OBInitStruct structure that
+ * contains the configuration information for the programming.
+ *
+ * @retval None
+ */
+void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
+{
+ pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER | OPTIONBYTE_BOR;
+
+ /* Get WRP sector */
+ pOBInit->WRPSector = FLASH_OB_GetWRP();
+
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+ pOBInit->WRPSector2 = FLASH_OB_GetWRP2();
+#endif
+
+ /*Get RDP Level*/
+ pOBInit->RDPLevel = FLASH_OB_GetRDP();
+
+ /*Get USER*/
+ pOBInit->USERConfig = FLASH_OB_GetUser();
+
+ /*Get BOR Level*/
+ pOBInit->BORLevel = FLASH_OB_GetBOR();
+
+ /* Get BOOT bit 1 config OB */
+ pOBInit->BOOTBit1Config = FLASH_OB_GetBOOTBit1();
+}
+
+#if defined(FLASH_OPTR_WPRMOD) || defined(FLASH_OPTR_BFB2)
+
+/**
+ * @brief Program option bytes
+ * @param pAdvOBInit pointer to an FLASH_AdvOBProgramInitTypeDef structure that
+ * contains the configuration information for the programming.
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_AdvOBProgram (FLASH_AdvOBProgramInitTypeDef *pAdvOBInit)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+
+ /* Check the parameters */
+ assert_param(IS_OBEX(pAdvOBInit->OptionType));
+
+#if defined(FLASH_OPTR_WPRMOD)
+
+ /* Program PCROP option byte*/
+ if ((pAdvOBInit->OptionType & OPTIONBYTE_PCROP) == OPTIONBYTE_PCROP)
+ {
+ /* Check the parameters */
+ assert_param(IS_PCROPSTATE(pAdvOBInit->PCROPState));
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+ status = FLASH_OB_ProtectedSectorsConfig(pAdvOBInit->PCROPSector, pAdvOBInit->PCROPSector2, pAdvOBInit->PCROPState);
+#else
+ status = FLASH_OB_ProtectedSectorsConfig(pAdvOBInit->PCROPSector, pAdvOBInit->PCROPState);
+#endif
+ }
+
+#endif /* FLASH_OPTR_WPRMOD */
+
+#if defined(FLASH_OPTR_BFB2)
+
+ /* Program BOOT config option byte */
+ if ((pAdvOBInit->OptionType & OPTIONBYTE_BOOTCONFIG) == OPTIONBYTE_BOOTCONFIG)
+ {
+ status = FLASH_OB_BootConfig(pAdvOBInit->BootConfig);
+ }
+
+#endif /* FLASH_OPTR_BFB2 */
+
+ return status;
+}
+
+/**
+ * @brief Get the OBEX byte configuration
+ * @param pAdvOBInit pointer to an FLASH_AdvOBProgramInitTypeDef structure that
+ * contains the configuration information for the programming.
+ *
+ * @retval None
+ */
+void HAL_FLASHEx_AdvOBGetConfig(FLASH_AdvOBProgramInitTypeDef *pAdvOBInit)
+{
+ pAdvOBInit->OptionType = 0;
+
+#if defined(FLASH_OPTR_WPRMOD)
+
+ pAdvOBInit->OptionType |= OPTIONBYTE_PCROP;
+
+
+ /* Get PCROP state */
+ pAdvOBInit->PCROPState = (FLASH->OPTR & FLASH_OPTR_WPRMOD) >> FLASH_OPTR_WPRMOD_Pos;
+ /* Get PCROP protected sector */
+ pAdvOBInit->PCROPSector = FLASH->WRPR;
+
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+ /* Get PCROP protected sector */
+ pAdvOBInit->PCROPSector2 = FLASH->WRPR2;
+#endif
+#endif /* FLASH_OPTR_WPRMOD */
+
+#if defined(FLASH_OPTR_BFB2)
+
+ pAdvOBInit->OptionType |= OPTIONBYTE_BOOTCONFIG;
+
+ /* Get Boot config OB */
+ pAdvOBInit->BootConfig = (FLASH->OPTR & FLASH_OPTR_BFB2) >> 16U;
+
+#endif /* FLASH_OPTR_BFB2 */
+}
+
+#endif /* FLASH_OPTR_WPRMOD || FLASH_OPTR_BFB2 */
+
+#if defined(FLASH_OPTR_WPRMOD)
+
+/**
+ * @brief Select the Protection Mode (WPRMOD).
+ * @note Once WPRMOD bit is active, unprotection of a protected sector is not possible
+ * @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_OB_SelectPCROP(void)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint16_t tmp1 = 0;
+ uint32_t tmp2 = 0;
+ uint8_t optiontmp = 0;
+ uint16_t optiontmp2 = 0;
+
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ /* Mask RDP Byte */
+ optiontmp = (uint8_t)(*(__IO uint8_t *)(OB_BASE));
+
+ /* Update Option Byte */
+ optiontmp2 = (uint16_t)(OB_PCROP_SELECTED | optiontmp);
+
+ /* calculate the option byte to write */
+ tmp1 = (uint16_t)(~(optiontmp2 ));
+ tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16U)) | ((uint32_t)optiontmp2));
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* program PCRop */
+ OB->RDP = tmp2;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Read protection operation Status */
+ return status;
+}
+
+/**
+ * @brief Deselect the Protection Mode (WPRMOD).
+ * @note Once WPRMOD bit is active, unprotection of a protected sector is not possible
+ * @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_OB_DeSelectPCROP(void)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint16_t tmp1 = 0;
+ uint32_t tmp2 = 0;
+ uint8_t optiontmp = 0;
+ uint16_t optiontmp2 = 0;
+
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ /* Mask RDP Byte */
+ optiontmp = (uint8_t)(*(__IO uint8_t *)(OB_BASE));
+
+ /* Update Option Byte */
+ optiontmp2 = (uint16_t)(OB_PCROP_DESELECTED | optiontmp);
+
+ /* calculate the option byte to write */
+ tmp1 = (uint16_t)(~(optiontmp2 ));
+ tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16U)) | ((uint32_t)optiontmp2));
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* program PCRop */
+ OB->RDP = tmp2;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Read protection operation Status */
+ return status;
+}
+
+#endif /* FLASH_OPTR_WPRMOD */
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASHEx_Exported_Functions_Group3 DATA EEPROM Programming functions
+ * @brief DATA EEPROM Programming functions
+ *
+@verbatim
+ ===============================================================================
+ ##### DATA EEPROM Programming functions #####
+ ===============================================================================
+
+ [..] Any operation of erase or program should follow these steps:
+ (#) Call the @ref HAL_FLASHEx_DATAEEPROM_Unlock() function to enable the data EEPROM access
+ and Flash program erase control register access.
+ (#) Call the desired function to erase or program data.
+ (#) Call the @ref HAL_FLASHEx_DATAEEPROM_Lock() to disable the data EEPROM access
+ and Flash program erase control register access(recommended
+ to protect the DATA_EEPROM against possible unwanted operation).
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Unlocks the data memory and FLASH_PECR register access.
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_DATAEEPROM_Unlock(void)
+{
+ uint32_t primask_bit;
+
+ if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
+ {
+ /* Disable interrupts to avoid any interruption during unlock sequence */
+ primask_bit = __get_PRIMASK();
+ __disable_irq();
+
+ /* Unlocking the Data memory and FLASH_PECR register access*/
+ FLASH->PEKEYR = FLASH_PEKEY1;
+ FLASH->PEKEYR = FLASH_PEKEY2;
+
+ /* Re-enable the interrupts: restore previous priority mask */
+ __set_PRIMASK(primask_bit);
+
+ if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Locks the Data memory and FLASH_PECR register access.
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_DATAEEPROM_Lock(void)
+{
+ /* Set the PELOCK Bit to lock the data memory and FLASH_PECR register access */
+ SET_BIT(FLASH->PECR, FLASH_PECR_PELOCK);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Erase a word in data memory.
+ * @param Address specifies the address to be erased.
+ * @note To correctly run this function, the @ref HAL_FLASHEx_DATAEEPROM_Unlock() function
+ * must be called before.
+ * Call the @ref HAL_FLASHEx_DATAEEPROM_Lock() to the data EEPROM access
+ * and Flash program erase control register access(recommended to protect
+ * the DATA_EEPROM against possible unwanted operation).
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASHEx_DATAEEPROM_Erase(uint32_t Address)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_FLASH_DATA_ADDRESS(Address));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Write 00000000h to valid address in the data memory */
+ *(__IO uint32_t *) Address = 0x00000000U;
+
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the erase status */
+ return status;
+}
+
+/**
+ * @brief Program word at a specified address
+ * @note To correctly run this function, the @ref HAL_FLASHEx_DATAEEPROM_Unlock() function
+ * must be called before.
+ * Call the @ref HAL_FLASHEx_DATAEEPROM_Unlock() to he data EEPROM access
+ * and Flash program erase control register access(recommended to protect
+ * the DATA_EEPROM against possible unwanted operation).
+ * @note The function @ref HAL_FLASHEx_DATAEEPROM_EnableFixedTimeProgram() can be called before
+ * this function to configure the Fixed Time Programming.
+ * @param TypeProgram Indicate the way to program at a specified address.
+ * This parameter can be a value of @ref FLASHEx_Type_Program_Data
+ * @param Address specifie the address to be programmed.
+ * @param Data specifie the data to be programmed
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+
+HAL_StatusTypeDef HAL_FLASHEx_DATAEEPROM_Program(uint32_t TypeProgram, uint32_t Address, uint32_t Data)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Check the parameters */
+ assert_param(IS_TYPEPROGRAMDATA(TypeProgram));
+ assert_param(IS_FLASH_DATA_ADDRESS(Address));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ if(TypeProgram == FLASH_TYPEPROGRAMDATA_WORD)
+ {
+ /* Program word (32-bit) at a specified address.*/
+ *(__IO uint32_t *)Address = Data;
+ }
+ else if(TypeProgram == FLASH_TYPEPROGRAMDATA_HALFWORD)
+ {
+ /* Program halfword (16-bit) at a specified address.*/
+ *(__IO uint16_t *)Address = (uint16_t) Data;
+ }
+ else if(TypeProgram == FLASH_TYPEPROGRAMDATA_BYTE)
+ {
+ /* Program byte (8-bit) at a specified address.*/
+ *(__IO uint8_t *)Address = (uint8_t) Data;
+ }
+ else
+ {
+ status = HAL_ERROR;
+ }
+
+ if (status != HAL_OK)
+ {
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+
+ return status;
+}
+
+/**
+ * @brief Enable DATA EEPROM fixed Time programming (2*Tprog).
+ * @retval None
+ */
+void HAL_FLASHEx_DATAEEPROM_EnableFixedTimeProgram(void)
+{
+ SET_BIT(FLASH->PECR, FLASH_PECR_FIX);
+}
+
+/**
+ * @brief Disables DATA EEPROM fixed Time programming (2*Tprog).
+ * @retval None
+ */
+void HAL_FLASHEx_DATAEEPROM_DisableFixedTimeProgram(void)
+{
+ CLEAR_BIT(FLASH->PECR, FLASH_PECR_FIX);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup FLASHEx_Private_Functions
+ * @{
+ */
+
+/*
+==============================================================================
+ OPTIONS BYTES
+==============================================================================
+*/
+/**
+ * @brief Enables or disables the read out protection.
+ * @note To correctly run this function, the @ref HAL_FLASH_OB_Unlock() function
+ * must be called before.
+ * @param OB_RDP specifies the read protection level.
+ * This parameter can be:
+ * @arg @ref OB_RDP_LEVEL_0 No protection
+ * @arg @ref OB_RDP_LEVEL_1 Read protection of the memory
+ * @arg @ref OB_RDP_LEVEL_2 Chip protection
+ *
+ * !!!Warning!!! When enabling OB_RDP_LEVEL_2 it's no more possible to go back to level 1 or 0
+ *
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef FLASH_OB_RDPConfig(uint8_t OB_RDP)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t tmp1 = 0U, tmp2 = 0U, tmp3 = 0U;
+
+ /* Check the parameters */
+ assert_param(IS_OB_RDP(OB_RDP));
+
+ tmp1 = (uint32_t)(OB->RDP & FLASH_OPTR_RDPROT);
+
+#if defined(FLASH_OPTR_WPRMOD)
+ /* Mask WPRMOD bit */
+ tmp3 = (uint32_t)(OB->RDP & FLASH_OPTR_WPRMOD);
+#endif
+
+ /* calculate the option byte to write */
+ tmp1 = (~((uint32_t)(OB_RDP | tmp3)));
+ tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16U)) | ((uint32_t)(OB_RDP | tmp3)));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* program read protection level */
+ OB->RDP = tmp2;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Read protection operation Status */
+ return status;
+}
+
+/**
+ * @brief Programs the FLASH brownout reset threshold level Option Byte.
+ * @param OB_BOR Selects the brownout reset threshold level.
+ * This parameter can be one of the following values:
+ * @arg @ref OB_BOR_OFF BOR is disabled at power down, the reset is asserted when the VDD
+ * power supply reaches the PDR(Power Down Reset) threshold (1.5V)
+ * @arg @ref OB_BOR_LEVEL1 BOR Reset threshold levels for 1.7V - 1.8V VDD power supply
+ * @arg @ref OB_BOR_LEVEL2 BOR Reset threshold levels for 1.9V - 2.0V VDD power supply
+ * @arg @ref OB_BOR_LEVEL3 BOR Reset threshold levels for 2.3V - 2.4V VDD power supply
+ * @arg @ref OB_BOR_LEVEL4 BOR Reset threshold levels for 2.55V - 2.65V VDD power supply
+ * @arg @ref OB_BOR_LEVEL5 BOR Reset threshold levels for 2.8V - 2.9V VDD power supply
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef FLASH_OB_BORConfig(uint8_t OB_BOR)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t tmp = 0, tmp1 = 0;
+
+ /* Check the parameters */
+ assert_param(IS_OB_BOR_LEVEL(OB_BOR));
+
+ /* Get the User Option byte register */
+ tmp1 = OB->USER & ((~FLASH_OPTR_BOR_LEV) >> 16U);
+
+ /* Calculate the option byte to write - [0xFF | nUSER | 0x00 | USER]*/
+ tmp = (uint32_t)~((OB_BOR | tmp1)) << 16U;
+ tmp |= (OB_BOR | tmp1);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Write the BOR Option Byte */
+ OB->USER = tmp;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Option Byte BOR programming Status */
+ return status;
+}
+
+/**
+ * @brief Sets or resets the BOOT bit1 option bit.
+ * @param OB_BootBit1 Set or Reset the BOOT bit1 option bit.
+ * This parameter can be one of the following values:
+ * @arg @ref OB_BOOT_BIT1_RESET BOOT1 option bit reset
+ * @arg @ref OB_BOOT_BIT1_SET BOOT1 option bit set
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef FLASH_OB_BOOTBit1Config(uint8_t OB_BootBit1)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t tmp = 0, tmp1 = 0, OB_Bits = ((uint32_t) OB_BootBit1) << 15;
+
+ /* Check the parameters */
+ assert_param(IS_OB_BOOT1(OB_BootBit1));
+
+ /* Get the User Option byte register */
+ tmp1 = OB->USER & ((~FLASH_OPTR_BOOT1) >> 16U);
+
+ /* Calculate the user option byte to write */
+ tmp = (~(OB_Bits | tmp1)) << 16U;
+ tmp |= OB_Bits | tmp1;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+ /* Program OB */
+ OB->USER = tmp;
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ return status;
+}
+
+/**
+ * @brief Returns the FLASH User Option Bytes values.
+ * @retval The FLASH User Option Bytes.
+ */
+static uint8_t FLASH_OB_GetUser(void)
+{
+ /* Return the User Option Byte */
+ return (uint8_t)((FLASH->OPTR & FLASH_OPTR_USER) >> 16U);
+}
+
+/**
+ * @brief Returns the FLASH Read Protection level.
+ * @retval FLASH RDP level
+ * This parameter can be one of the following values:
+ * @arg @ref OB_RDP_LEVEL_0 No protection
+ * @arg @ref OB_RDP_LEVEL_1 Read protection of the memory
+ * @arg @ref OB_RDP_LEVEL_2 Full chip protection
+ */
+static uint8_t FLASH_OB_GetRDP(void)
+{
+ uint8_t rdp_level = READ_BIT(FLASH->OPTR, FLASH_OPTR_RDPROT);
+
+ if ((rdp_level != OB_RDP_LEVEL_0) && (rdp_level != OB_RDP_LEVEL_2))
+ {
+ return (OB_RDP_LEVEL_1);
+ }
+ else
+ {
+ return rdp_level;
+ }
+}
+
+/**
+ * @brief Returns the FLASH BOR level.
+ * @retval The BOR level Option Bytes.
+ */
+static uint8_t FLASH_OB_GetBOR(void)
+{
+ /* Return the BOR level */
+ return (uint8_t)((FLASH->OPTR & (uint32_t)FLASH_OPTR_BOR_LEV) >> 16U);
+}
+
+/**
+ * @brief Returns the FLASH BOOT bit1 value.
+ * @retval The BOOT bit 1 value Option Bytes.
+ */
+static uint8_t FLASH_OB_GetBOOTBit1(void)
+{
+ /* Return the BOR level */
+ return (FLASH->OPTR & FLASH_OPTR_BOOT1) >> FLASH_OPTR_BOOT1_Pos;
+
+}
+
+/**
+ * @brief Returns the FLASH Write Protection Option Bytes value.
+ * @retval The FLASH Write Protection Option Bytes value.
+ */
+static uint32_t FLASH_OB_GetWRP(void)
+{
+ /* Return the FLASH write protection Register value */
+ return (uint32_t)(FLASH->WRPR);
+}
+
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+/**
+ * @brief Returns the FLASH Write Protection Option Bytes value.
+ * @retval The FLASH Write Protection Option Bytes value.
+ */
+static uint32_t FLASH_OB_GetWRP2(void)
+{
+ /* Return the FLASH write protection Register value */
+ return (uint32_t)(FLASH->WRPR2);
+}
+#endif /* STM32L071xx || STM32L072xx || STM32L073xx || STM32L081xx || STM32L082xx || STM32L083xx */
+
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+/**
+ * @brief Write Option Byte of the desired pages of the Flash.
+ * @param Sector specifies the sectors to be write protected.
+ * @param Sector2 specifies the sectors to be write protected (only stm32l07xxx and stm32l08xxx devices)
+ * @param NewState new state of the specified FLASH Pages Write protection.
+ * This parameter can be:
+ * @arg @ref OB_WRPSTATE_ENABLE
+ * @arg @ref OB_WRPSTATE_DISABLE
+ * @retval HAL_StatusTypeDef
+ */
+static HAL_StatusTypeDef FLASH_OB_ProtectedSectorsConfig(uint32_t Sector, uint32_t Sector2, uint32_t NewState)
+#else
+/**
+ * @brief Write Option Byte of the desired pages of the Flash.
+ * @param Sector specifies the sectors to be write protected.
+ * @param NewState new state of the specified FLASH Pages Write protection.
+ * This parameter can be:
+ * @arg @ref OB_WRPSTATE_ENABLE
+ * @arg @ref OB_WRPSTATE_DISABLE
+ * @retval HAL_StatusTypeDef
+ */
+static HAL_StatusTypeDef FLASH_OB_ProtectedSectorsConfig(uint32_t Sector, uint32_t NewState)
+#endif
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t WRP_Data = 0;
+ uint32_t OB_WRP = Sector;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Update WRP only if at least 1 selected sector */
+ if (OB_WRP != 0x00000000U)
+ {
+ if ((OB_WRP & WRP_MASK_LOW) != 0x00000000U)
+ {
+ if (NewState != OB_WRPSTATE_DISABLE)
+ {
+ WRP_Data = (uint16_t)(((OB_WRP & WRP_MASK_LOW) | OB->WRP01));
+ OB->WRP01 = (uint32_t)(~(WRP_Data) << 16U) | (WRP_Data);
+ }
+ else
+ {
+ WRP_Data = (uint16_t)(~OB_WRP & (WRP_MASK_LOW & OB->WRP01));
+ OB->WRP01 = (uint32_t)((~WRP_Data) << 16U) | (WRP_Data);
+ }
+ }
+ }
+#if defined(STM32L071xx) || defined(STM32L072xx) || defined(STM32L073xx) || defined(STM32L081xx) || defined(STM32L082xx) || defined(STM32L083xx)
+ /* Update WRP only if at least 1 selected sector */
+ if (OB_WRP != 0x00000000U)
+ {
+ if ((OB_WRP & WRP_MASK_HIGH) != 0x00000000U)
+ {
+ if (NewState != OB_WRPSTATE_DISABLE)
+ {
+ WRP_Data = (uint16_t)((((OB_WRP & WRP_MASK_HIGH) >> 16U | OB->WRP23)));
+ OB->WRP23 = (uint32_t)(~(WRP_Data) << 16U) | (WRP_Data);
+ }
+ else
+ {
+ WRP_Data = (uint16_t)((((~OB_WRP & WRP_MASK_HIGH) >> 16U & OB->WRP23)));
+ OB->WRP23 = (uint32_t)((~WRP_Data) << 16U) | (WRP_Data);
+ }
+ }
+ }
+
+ OB_WRP = Sector2;
+ /* Update WRP only if at least 1 selected sector */
+ if (OB_WRP != 0x00000000U)
+ {
+ if ((OB_WRP & WRP_MASK_LOW) != 0x00000000U)
+ {
+ if (NewState != OB_WRPSTATE_DISABLE)
+ {
+ WRP_Data = (uint16_t)(((OB_WRP & WRP_MASK_LOW) | OB->WRP45));
+ OB->WRP45 =(uint32_t)(~(WRP_Data) << 16U) | (WRP_Data);
+ }
+ else
+ {
+ WRP_Data = (uint16_t)(~OB_WRP & (WRP_MASK_LOW & OB->WRP45));
+ OB->WRP45 = (uint32_t)((~WRP_Data) << 16U) | (WRP_Data);
+ }
+ }
+ }
+#endif /* STM32L071xx || STM32L072xx || STM32L073xx || STM32L081xx || STM32L082xx || STM32L083xx */
+ }
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ /* Return the write protection operation Status */
+ return status;
+}
+
+/**
+ * @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
+ * @param OB_IWDG Selects the WDG mode.
+ * This parameter can be one of the following values:
+ * @arg @ref OB_IWDG_SW Software WDG selected
+ * @arg @ref OB_IWDG_HW Hardware WDG selected
+ * @param OB_STOP Reset event when entering STOP mode.
+ * This parameter can be one of the following values:
+ * @arg @ref OB_STOP_NORST No reset generated when entering in STOP
+ * @arg @ref 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 @ref OB_STDBY_NORST No reset generated when entering in STANDBY
+ * @arg @ref OB_STDBY_RST Reset generated when entering in STANDBY
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t tmp = 0, tmp1 = 0;
+
+ /* 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));
+
+ /* Get the User Option byte register */
+ tmp1 = OB->USER & ((~FLASH_OPTR_USER) >> 16U);
+
+ /* Calculate the user option byte to write */
+ tmp = (uint32_t)(((uint32_t)~((uint32_t)((uint32_t)(OB_IWDG) | (uint32_t)(OB_STOP) | (uint32_t)(OB_STDBY) | tmp1))) << 16U);
+ tmp |= ((uint32_t)(OB_IWDG) | ((uint32_t)OB_STOP) | (uint32_t)(OB_STDBY) | tmp1);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Write the User Option Byte */
+ OB->USER = tmp;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Option Byte program Status */
+ return status;
+}
+
+#if defined(FLASH_OPTR_BFB2)
+/**
+ * @brief Configures to boot from Bank1 or Bank2.
+ * @param OB_BOOT select the FLASH Bank to boot from.
+ * This parameter can be one of the following values:
+ * This parameter can be one of the following values:
+ * @arg @ref OB_BOOT_BANK1 BFB2 option bit reset
+ * @arg @ref OB_BOOT_BANK2 BFB2 option bit set
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef FLASH_OB_BootConfig(uint8_t OB_BOOT)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint32_t tmp = 0U, tmp1 = 0U;
+
+ /* Check the parameters */
+ assert_param(IS_OB_BOOT_BANK(OB_BOOT));
+
+ /* Get the User Option byte register and BOR Level*/
+ tmp1 = OB->USER & ((~FLASH_OPTR_BFB2) >> 16U);
+
+ /* Calculate the option byte to write */
+ tmp = (uint32_t)~(OB_BOOT | tmp1) << 16U;
+ tmp |= (OB_BOOT | tmp1);
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Write the BOOT Option Byte */
+ OB->USER = tmp;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Return the Option Byte program Status */
+ return status;
+}
+
+#endif /* FLASH_OPTR_BFB2 */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup FLASH
+ * @{
+ */
+
+
+/** @addtogroup FLASH_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Erases a specified page in program memory.
+ * @param PageAddress The page address in program memory to be erased.
+ * @note A Page is erased in the Program memory only if the address to load
+ * is the start address of a page (multiple of @ref FLASH_PAGE_SIZE bytes).
+ * @retval None
+ */
+void FLASH_PageErase(uint32_t PageAddress)
+{
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Set the ERASE bit */
+ SET_BIT(FLASH->PECR, FLASH_PECR_ERASE);
+
+ /* Set PROG bit */
+ SET_BIT(FLASH->PECR, FLASH_PECR_PROG);
+
+ /* Write 00000000h to the first word of the program page to erase */
+ *(__IO uint32_t *)(uint32_t)(PageAddress & ~(FLASH_PAGE_SIZE - 1)) = 0x00000000;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_FLASH_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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