--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/f103c8/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_flash_ex.c	Mon Jan 16 11:04:47 2017 +0300
@@ -0,0 +1,1140 @@
+/**
+  ******************************************************************************
+  * @file    stm32f1xx_hal_flash_ex.c
+  * @author  MCD Application Team
+  * @version V1.0.4
+  * @date    29-April-2016
+  * @brief   Extended FLASH HAL module driver.
+  *    
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the FLASH peripheral:
+  *           + Extended Initialization/de-initialization functions
+  *           + Extended I/O operation functions
+  *           + Extended Peripheral Control functions 
+  *         
+  @verbatim
+  ==============================================================================
+               ##### Flash peripheral extended features  #####
+  ==============================================================================
+           
+                      ##### How to use this driver #####
+  ==============================================================================
+  [..] This driver provides functions to configure and program the FLASH memory 
+       of all STM32F1xxx devices. It includes
+       
+        (++) Set/Reset the write protection
+        (++) Program the user Option Bytes
+        (++) Get the Read protection Level
+  
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************  
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_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
+ * @{
+ */
+#define FLASH_POSITION_IWDGSW_BIT        (uint32_t)POSITION_VAL(FLASH_OBR_IWDG_SW)
+#define FLASH_POSITION_OB_USERDATA0_BIT  (uint32_t)POSITION_VAL(FLASH_OBR_DATA0)
+#define FLASH_POSITION_OB_USERDATA1_BIT  (uint32_t)POSITION_VAL(FLASH_OBR_DATA1)
+/**
+  * @}
+  */
+
+/* Private macro -------------------------------------------------------------*/
+/** @defgroup FLASHEx_Private_Macros FLASHEx Private Macros
+  * @{
+  */
+/**
+  * @}
+  */ 
+
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup FLASHEx_Private_Functions FLASHEx Private Functions
+ * @{
+ */
+/* Erase operations */
+static void              FLASH_MassErase(uint32_t Banks);
+
+/* Option bytes control */
+static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage);
+static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage);
+static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel);
+static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig);
+static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data);
+static uint32_t          FLASH_OB_GetWRP(void);
+static uint32_t          FLASH_OB_GetRDP(void);
+static uint8_t           FLASH_OB_GetUser(void);
+
+/**
+  * @}
+  */
+
+/* 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  Perform a mass erase or 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 = 0;
+
+  /* Process Locked */
+  __HAL_LOCK(&pFlash);
+
+  /* Check the parameters */
+  assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
+
+  if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
+  {
+#if defined(FLASH_BANK2_END)
+    if (pEraseInit->Banks == FLASH_BANK_BOTH)
+    {
+      /* Mass Erase requested for Bank1 and Bank2 */
+      /* Wait for last operation to be completed */
+      if ((FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK) && \
+          (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK))
+      {
+        /*Mass erase to be done*/
+        FLASH_MassErase(FLASH_BANK_BOTH);
+        
+        /* Wait for last operation to be completed */
+        if ((FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK) && \
+            (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK))
+        {
+          status = HAL_OK;
+        }
+        
+        /* If the erase operation is completed, disable the MER Bit */
+        CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
+        CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
+      }
+    }
+    else if (pEraseInit->Banks == FLASH_BANK_2)
+    {
+      /* Mass Erase requested for Bank2 */
+      /* Wait for last operation to be completed */
+      if (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
+      {
+        /*Mass erase to be done*/
+        FLASH_MassErase(FLASH_BANK_2);
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
+        
+        /* If the erase operation is completed, disable the MER Bit */
+        CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
+      }
+    }
+    else 
+#endif /* FLASH_BANK2_END */
+    {
+      /* Mass Erase requested for Bank1 */
+      /* Wait for last operation to be completed */
+      if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
+      {
+        /*Mass erase to be done*/
+        FLASH_MassErase(FLASH_BANK_1);
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+        
+        /* If the erase operation is completed, disable the MER Bit */
+        CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
+      }
+    }
+  }
+  else
+  {
+    /* Page Erase is requested */
+    /* Check the parameters */
+    assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
+    assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
+    
+#if defined(FLASH_BANK2_END)
+    /* Page Erase requested on address located on bank2 */
+    if(pEraseInit->PageAddress > FLASH_BANK1_END)
+    {   
+      /* Wait for last operation to be completed */
+      if (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
+      {
+        /*Initialization of PageError variable*/
+        *PageError = 0xFFFFFFFF;
+        
+        /* Erase by page by page to be done*/
+        for(address = pEraseInit->PageAddress;
+            address < (pEraseInit->PageAddress + (pEraseInit->NbPages)*FLASH_PAGE_SIZE);
+            address += FLASH_PAGE_SIZE)
+        {
+          FLASH_PageErase(address);
+          
+          /* Wait for last operation to be completed */
+          status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
+          
+          /* If the erase operation is completed, disable the PER Bit */
+          CLEAR_BIT(FLASH->CR2, FLASH_CR2_PER);
+          
+          if (status != HAL_OK)
+          {
+            /* In case of error, stop erase procedure and return the faulty address */
+            *PageError = address;
+            break;
+          }
+        }
+      }
+    }
+    else
+#endif /* FLASH_BANK2_END */
+   {
+      /* Page Erase requested on address located on bank1 */
+      /* Wait for last operation to be completed */
+      if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
+      {
+        /*Initialization of PageError variable*/
+        *PageError = 0xFFFFFFFF;
+        
+        /* 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((uint32_t)FLASH_TIMEOUT_VALUE);
+          
+          /* If the erase operation is completed, disable the PER Bit */
+          CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
+          
+          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 mass erase or erase 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)
+  * @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_OK;
+
+  /* Process Locked */
+  __HAL_LOCK(&pFlash);
+
+  /* If procedure already ongoing, reject the next one */
+  if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
+  {
+    return HAL_ERROR;
+  }
+  
+  /* Check the parameters */
+  assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
+
+  /* Enable End of FLASH Operation and Error source interrupts */
+  __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
+
+#if defined(FLASH_BANK2_END)
+  /* Enable End of FLASH Operation and Error source interrupts */
+  __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
+  
+#endif
+  if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
+  {
+    /*Mass erase to be done*/
+    pFlash.ProcedureOnGoing = FLASH_PROC_MASSERASE;
+        FLASH_MassErase(pEraseInit->Banks);
+  }
+  else
+  {
+    /* Erase by page to be done*/
+
+    /* Check the parameters */
+    assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
+    assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
+
+    pFlash.ProcedureOnGoing = FLASH_PROC_PAGEERASE;
+    pFlash.DataRemaining = pEraseInit->NbPages;
+    pFlash.Address = pEraseInit->PageAddress;
+
+    /*Erase 1st page and wait for IT*/
+    FLASH_PageErase(pEraseInit->PageAddress);
+  }
+
+  return status;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup FLASHEx_Exported_Functions_Group2 Option Bytes Programming functions
+ *  @brief   Option Bytes Programming functions
+  *
+@verbatim   
+  ==============================================================================
+                ##### Option Bytes Programming functions ##### 
+  ==============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to control the FLASH 
+    option bytes operations.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Erases the FLASH option bytes.
+  * @note   This functions erases all option bytes except the Read protection (RDP).
+  *         The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
+  *         The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
+  *         The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
+  *         (system reset will occur)
+  * @retval HAL status
+  */
+
+HAL_StatusTypeDef HAL_FLASHEx_OBErase(void)
+{
+  uint8_t rdptmp = OB_RDP_LEVEL_0;
+  HAL_StatusTypeDef status = HAL_ERROR;
+
+  /* Get the actual read protection Option Byte value */
+  rdptmp = FLASH_OB_GetRDP();
+
+  /* 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;
+
+    /* If the previous operation is completed, proceed to erase the option bytes */
+    SET_BIT(FLASH->CR, FLASH_CR_OPTER);
+    SET_BIT(FLASH->CR, FLASH_CR_STRT);
+
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+
+    /* If the erase operation is completed, disable the OPTER Bit */
+    CLEAR_BIT(FLASH->CR, FLASH_CR_OPTER);
+
+    if(status == HAL_OK)
+    {
+      /* Restore the last read protection Option Byte value */
+      status = FLASH_OB_RDP_LevelConfig(rdptmp);
+    }
+  }
+
+  /* Return the erase status */
+  return status;
+}
+
+/**
+  * @brief  Program option bytes
+  * @note   The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
+  *         The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
+  *         The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
+  *         (system reset will occur)
+  *
+  * @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 (pOBInit->WRPState == OB_WRPSTATE_ENABLE)
+    {
+      /* Enable of Write protection on the selected page */
+      status = FLASH_OB_EnableWRP(pOBInit->WRPPage);
+    }
+    else
+    {
+      /* Disable of Write protection on the selected page */
+      status = FLASH_OB_DisableWRP(pOBInit->WRPPage);
+    }
+    if (status != HAL_OK)
+    {
+      /* Process Unlocked */
+      __HAL_UNLOCK(&pFlash);
+      return status;
+    }
+  }
+
+  /* Read protection configuration */
+  if((pOBInit->OptionType & OPTIONBYTE_RDP) == OPTIONBYTE_RDP)
+  {
+    status = FLASH_OB_RDP_LevelConfig(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);
+    if (status != HAL_OK)
+    {
+      /* Process Unlocked */
+      __HAL_UNLOCK(&pFlash);
+      return status;
+    }
+  }
+
+  /* DATA configuration*/
+  if((pOBInit->OptionType & OPTIONBYTE_DATA) == OPTIONBYTE_DATA)
+  {
+    status = FLASH_OB_ProgramData(pOBInit->DATAAddress, pOBInit->DATAData);
+    if (status != HAL_OK)
+    {
+      /* Process Unlocked */
+      __HAL_UNLOCK(&pFlash);
+      return status;
+    }
+  }
+
+  /* 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;
+
+  /*Get WRP*/
+  pOBInit->WRPPage = FLASH_OB_GetWRP();
+
+  /*Get RDP Level*/
+  pOBInit->RDPLevel = FLASH_OB_GetRDP();
+
+  /*Get USER*/
+  pOBInit->USERConfig = FLASH_OB_GetUser();
+}
+
+/**
+  * @brief  Get the Option byte user data
+  * @param  DATAAdress Address of the option byte DATA
+  *          This parameter can be one of the following values:
+  *            @arg @ref OB_DATA_ADDRESS_DATA0
+  *            @arg @ref OB_DATA_ADDRESS_DATA1
+  * @retval Value programmed in USER data
+  */
+uint32_t HAL_FLASHEx_OBGetUserData(uint32_t DATAAdress)
+{
+  uint32_t value = 0;
+  
+  if (DATAAdress == OB_DATA_ADDRESS_DATA0)
+  {
+    /* Get value programmed in OB USER Data0 */
+    value = READ_BIT(FLASH->OBR, FLASH_OBR_DATA0) >> FLASH_POSITION_OB_USERDATA0_BIT;
+  }
+  else
+  {
+    /* Get value programmed in OB USER Data1 */
+    value = READ_BIT(FLASH->OBR, FLASH_OBR_DATA1) >> FLASH_POSITION_OB_USERDATA1_BIT;
+  }
+  
+  return value;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup FLASHEx_Private_Functions
+ * @{
+ */
+
+/**
+  * @brief  Full erase of FLASH memory Bank 
+  * @param  Banks Banks to be erased
+  *          This parameter can be one of the following values:
+  *            @arg @ref FLASH_BANK_1 Bank1 to be erased
+  @if STM32F101xG
+  *            @arg @ref FLASH_BANK_2 Bank2 to be erased
+  *            @arg @ref FLASH_BANK_BOTH Bank1 and Bank2 to be erased
+  @endif
+  @if STM32F103xG
+  *            @arg @ref FLASH_BANK_2 Bank2 to be erased
+  *            @arg @ref FLASH_BANK_BOTH Bank1 and Bank2 to be erased
+  @endif
+  *
+  * @retval None
+  */
+static void FLASH_MassErase(uint32_t Banks)
+{
+  /* Check the parameters */
+  assert_param(IS_FLASH_BANK(Banks));
+
+  /* Clean the error context */
+  pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+#if defined(FLASH_BANK2_END)
+  if(Banks == FLASH_BANK_BOTH)
+  {
+    /* bank1 & bank2 will be erased*/
+    SET_BIT(FLASH->CR, FLASH_CR_MER);
+    SET_BIT(FLASH->CR2, FLASH_CR2_MER);
+    SET_BIT(FLASH->CR, FLASH_CR_STRT);
+    SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
+  }
+  else if(Banks == FLASH_BANK_2)
+  {
+    /*Only bank2 will be erased*/
+    SET_BIT(FLASH->CR2, FLASH_CR2_MER);
+    SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
+  }
+  else
+  {
+#endif /* FLASH_BANK2_END */
+    /* Only bank1 will be erased*/
+    SET_BIT(FLASH->CR, FLASH_CR_MER);
+    SET_BIT(FLASH->CR, FLASH_CR_STRT);
+#if defined(FLASH_BANK2_END)
+  }
+#endif /* FLASH_BANK2_END */
+}
+
+/**
+  * @brief  Enable the write protection of the desired pages
+  * @note   An option byte erase is done automatically in this function. 
+  * @note   When the memory read protection level is selected (RDP level = 1), 
+  *         it is not possible to program or erase the flash page i if
+  *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1 
+  * 
+  * @param  WriteProtectPage specifies the page(s) to be write protected.
+  *         The value of this parameter depend on device used within the same series 
+  * @retval HAL status 
+  */
+static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  uint16_t WRP0_Data = 0xFFFF;
+#if defined(FLASH_WRP1_WRP1)
+  uint16_t WRP1_Data = 0xFFFF;
+#endif /* FLASH_WRP1_WRP1 */
+#if defined(FLASH_WRP2_WRP2)
+  uint16_t WRP2_Data = 0xFFFF;
+#endif /* FLASH_WRP2_WRP2 */
+#if defined(FLASH_WRP3_WRP3)
+  uint16_t WRP3_Data = 0xFFFF;
+#endif /* FLASH_WRP3_WRP3 */
+  
+  /* Check the parameters */
+  assert_param(IS_OB_WRP(WriteProtectPage));
+    
+  /* Get current write protected pages and the new pages to be protected ******/
+  WriteProtectPage = (uint32_t)(~((~FLASH_OB_GetWRP()) | WriteProtectPage));
+  
+#if defined(OB_WRP_PAGES0TO15MASK)
+  WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
+#elif defined(OB_WRP_PAGES0TO31MASK)
+  WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
+#endif /* OB_WRP_PAGES0TO31MASK */
+  
+#if defined(OB_WRP_PAGES16TO31MASK)
+  WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8);
+#elif defined(OB_WRP_PAGES32TO63MASK)
+  WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8);
+#endif /* OB_WRP_PAGES32TO63MASK */
+ 
+#if defined(OB_WRP_PAGES64TO95MASK)
+  WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES64TO95MASK) >> 16);
+#endif /* OB_WRP_PAGES64TO95MASK */
+#if defined(OB_WRP_PAGES32TO47MASK)
+  WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
+#endif /* OB_WRP_PAGES32TO47MASK */
+
+#if defined(OB_WRP_PAGES96TO127MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES96TO127MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO255MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO255MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO511MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO511MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO127MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24); 
+#endif /* OB_WRP_PAGES96TO127MASK */
+  
+  /* 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;
+
+    /* To be able to write again option byte, need to perform a option byte erase */
+    status = HAL_FLASHEx_OBErase();
+    if (status == HAL_OK)  
+    {
+      /* Enable write protection */
+      SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
+
+#if defined(FLASH_WRP0_WRP0)
+      if(WRP0_Data != 0xFF)
+      {
+        OB->WRP0 &= WRP0_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP0_WRP0 */
+
+#if defined(FLASH_WRP1_WRP1)
+      if((status == HAL_OK) && (WRP1_Data != 0xFF))
+      {
+        OB->WRP1 &= WRP1_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP1_WRP1 */
+
+#if defined(FLASH_WRP2_WRP2)
+      if((status == HAL_OK) && (WRP2_Data != 0xFF))
+      {
+        OB->WRP2 &= WRP2_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP2_WRP2 */
+
+#if defined(FLASH_WRP3_WRP3)
+      if((status == HAL_OK) && (WRP3_Data != 0xFF))
+      {
+        OB->WRP3 &= WRP3_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP3_WRP3 */
+
+      /* if the program operation is completed, disable the OPTPG Bit */
+      CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
+    }
+  }
+  
+  return status;
+}
+
+/**
+  * @brief  Disable the write protection of the desired pages
+  * @note   An option byte erase is done automatically in this function. 
+  * @note   When the memory read protection level is selected (RDP level = 1), 
+  *         it is not possible to program or erase the flash page i if   
+  *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1 
+  * 
+  * @param  WriteProtectPage specifies the page(s) to be write unprotected.
+  *         The value of this parameter depend on device used within the same series 
+  * @retval HAL status 
+  */
+static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  uint16_t WRP0_Data = 0xFFFF;
+#if defined(FLASH_WRP1_WRP1)
+  uint16_t WRP1_Data = 0xFFFF;
+#endif /* FLASH_WRP1_WRP1 */
+#if defined(FLASH_WRP2_WRP2)
+  uint16_t WRP2_Data = 0xFFFF;
+#endif /* FLASH_WRP2_WRP2 */
+#if defined(FLASH_WRP3_WRP3)
+  uint16_t WRP3_Data = 0xFFFF;
+#endif /* FLASH_WRP3_WRP3 */
+  
+  /* Check the parameters */
+  assert_param(IS_OB_WRP(WriteProtectPage));
+
+  /* Get current write protected pages and the new pages to be unprotected ******/
+  WriteProtectPage = (FLASH_OB_GetWRP() | WriteProtectPage);
+
+#if defined(OB_WRP_PAGES0TO15MASK)
+  WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
+#elif defined(OB_WRP_PAGES0TO31MASK)
+  WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
+#endif /* OB_WRP_PAGES0TO31MASK */
+  
+#if defined(OB_WRP_PAGES16TO31MASK)
+  WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8);
+#elif defined(OB_WRP_PAGES32TO63MASK)
+  WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8);
+#endif /* OB_WRP_PAGES32TO63MASK */
+ 
+#if defined(OB_WRP_PAGES64TO95MASK)
+  WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES64TO95MASK) >> 16);
+#endif /* OB_WRP_PAGES64TO95MASK */
+#if defined(OB_WRP_PAGES32TO47MASK)
+  WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
+#endif /* OB_WRP_PAGES32TO47MASK */
+
+#if defined(OB_WRP_PAGES96TO127MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES96TO127MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO255MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO255MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO511MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO511MASK) >> 24); 
+#elif defined(OB_WRP_PAGES48TO127MASK)
+  WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24); 
+#endif /* OB_WRP_PAGES96TO127MASK */
+
+    
+  /* 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;
+
+    /* To be able to write again option byte, need to perform a option byte erase */
+    status = HAL_FLASHEx_OBErase();
+    if (status == HAL_OK)  
+    {
+      SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
+
+#if defined(FLASH_WRP0_WRP0)
+      if(WRP0_Data != 0xFF)
+      {
+        OB->WRP0 |= WRP0_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP0_WRP0 */
+
+#if defined(FLASH_WRP1_WRP1)
+      if((status == HAL_OK) && (WRP1_Data != 0xFF))
+      {
+        OB->WRP1 |= WRP1_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP1_WRP1 */
+
+#if defined(FLASH_WRP2_WRP2)
+      if((status == HAL_OK) && (WRP2_Data != 0xFF))
+      {
+        OB->WRP2 |= WRP2_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP2_WRP2 */
+
+#if defined(FLASH_WRP3_WRP3)
+      if((status == HAL_OK) && (WRP3_Data != 0xFF))
+      {
+        OB->WRP3 |= WRP3_Data;
+        
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+      }
+#endif /* FLASH_WRP3_WRP3 */
+
+      /* if the program operation is completed, disable the OPTPG Bit */
+      CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
+    }
+  }
+  return status;
+}
+
+/**
+  * @brief  Set the read protection level.
+  * @param  ReadProtectLevel specifies the read protection 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
+  * @retval HAL status
+  */
+static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_RDP_LEVEL(ReadProtectLevel));
+  
+  /* 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;
+    
+    /* If the previous operation is completed, proceed to erase the option bytes */
+    SET_BIT(FLASH->CR, FLASH_CR_OPTER);
+    SET_BIT(FLASH->CR, FLASH_CR_STRT);
+
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
+
+    /* If the erase operation is completed, disable the OPTER Bit */
+    CLEAR_BIT(FLASH->CR, FLASH_CR_OPTER);
+
+    if(status == HAL_OK)
+    {
+      /* Enable the Option Bytes Programming operation */
+      SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
+      
+      WRITE_REG(OB->RDP, ReadProtectLevel);
+      
+      /* 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.    
+  * @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  Programs a half word at a specified Option Byte Data address.
+  * @note   The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
+  *         The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
+  *         The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes 
+  *         (system reset will occur)
+  *         Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
+  * @param  Address specifies the address to be programmed.
+  *         This parameter can be 0x1FFFF804 or 0x1FFFF806. 
+  * @param  Data specifies the data to be programmed.
+  * @retval HAL status
+  */
+static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data)
+{
+  HAL_StatusTypeDef status = HAL_ERROR;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_DATA_ADDRESS(Address));
+  
+  /* 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;
+
+    /* Enables the Option Bytes Programming operation */
+    SET_BIT(FLASH->CR, FLASH_CR_OPTPG); 
+    *(__IO uint16_t*)Address = Data;
+    
+    /* 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 the Option Byte Data Program Status */
+  return status;
+}
+
+/**
+  * @brief  Return 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)(READ_REG(FLASH->WRPR));
+}
+
+/**
+  * @brief  Returns the FLASH Read Protection level.
+  * @retval FLASH ReadOut Protection Status:
+  *         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
+  */
+static uint32_t FLASH_OB_GetRDP(void)
+{
+  uint32_t readstatus = OB_RDP_LEVEL_0;
+  uint32_t tmp_reg = 0;
+  
+  /* Read RDP level bits */
+  tmp_reg = READ_BIT(FLASH->OBR, FLASH_OBR_RDPRT);
+
+  if (tmp_reg == FLASH_OBR_RDPRT)
+  {
+    readstatus = OB_RDP_LEVEL_1;
+  }
+  else 
+  {
+    readstatus = OB_RDP_LEVEL_0;
+  }
+
+  return readstatus;
+}
+
+/**
+  * @brief  Return the FLASH User Option Byte value.
+  * @retval The FLASH User Option Bytes values: FLASH_OBR_IWDG_SW(Bit2), 
+  *         FLASH_OBR_nRST_STOP(Bit3),FLASH_OBR_nRST_STDBY(Bit4).
+  *         And FLASH_OBR_BFB2(Bit5) for STM32F101xG and STM32F103xG . 
+  */
+static uint8_t FLASH_OB_GetUser(void)
+{
+  /* Return the User Option Byte */
+  return (uint8_t)((READ_REG(FLASH->OBR) & FLASH_OBR_USER) >> FLASH_POSITION_IWDGSW_BIT);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup FLASH
+  * @{
+  */
+
+/** @addtogroup FLASH_Private_Functions
+ * @{
+ */
+
+/**
+  * @brief  Erase the specified FLASH memory page
+  * @param  PageAddress FLASH page to erase
+  *         The value of this parameter depend on device used within the same series      
+  * 
+  * @retval None
+  */
+void FLASH_PageErase(uint32_t PageAddress)
+{
+  /* Clean the error context */
+  pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+#if defined(FLASH_BANK2_END)
+  if(PageAddress > FLASH_BANK1_END)
+  { 
+    /* Proceed to erase the page */
+    SET_BIT(FLASH->CR2, FLASH_CR2_PER);
+    WRITE_REG(FLASH->AR2, PageAddress);
+    SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
+  }
+  else
+  {
+#endif /* FLASH_BANK2_END */
+    /* Proceed to erase the page */
+    SET_BIT(FLASH->CR, FLASH_CR_PER);
+    WRITE_REG(FLASH->AR, PageAddress);
+    SET_BIT(FLASH->CR, FLASH_CR_STRT);
+#if defined(FLASH_BANK2_END)
+  }
+#endif /* FLASH_BANK2_END */
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_FLASH_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/