mbed official
mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_flash_ex.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
- Child:
- 156:95d6b41a828b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_flash_ex.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,1005 @@
+/**
+ ******************************************************************************
+ * @file stm32f0xx_hal_flash_ex.c
+ * @author MCD Application Team
+ * @version V1.4.0
+ * @date 27-May-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 STM32F0xxx devices. It includes
+
+ (++) Set/Reset the write protection
+ (++) Program the user Option Bytes
+ (++) Get the Read protection Level
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© 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 "stm32f0xx_hal.h"
+
+/** @addtogroup STM32F0xx_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)8
+#define FLASH_POSITION_OB_USERDATA0_BIT (uint32_t)16
+#define FLASH_POSITION_OB_USERDATA1_BIT (uint32_t)24
+/**
+ * @}
+ */
+
+/* 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(void);
+void FLASH_PageErase(uint32_t PageAddress);
+
+/* 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)
+ {
+ /* 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();
+
+ /* 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));
+
+ /* 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 = 0xFFFFFFFFU;
+
+ /* 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 (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
+ {
+ /*Mass erase to be done*/
+ pFlash.ProcedureOnGoing = FLASH_PROC_MASSERASE;
+ FLASH_MassErase();
+ }
+ 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
+ *
+ * @retval None
+ */
+static void FLASH_MassErase(void)
+{
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Only bank1 will be erased*/
+ SET_BIT(FLASH->CR, FLASH_CR_MER);
+ SET_BIT(FLASH->CR, FLASH_CR_STRT);
+}
+
+/**
+ * @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(OB_WRP1_WRP1)
+ uint16_t WRP1_Data = 0xFFFF;
+#endif /* OB_WRP1_WRP1 */
+#if defined(OB_WRP2_WRP2)
+ uint16_t WRP2_Data = 0xFFFF;
+#endif /* OB_WRP2_WRP2 */
+#if defined(OB_WRP3_WRP3)
+ uint16_t WRP3_Data = 0xFFFF;
+#endif /* OB_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_PAGES32TO47MASK)
+ WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
+#endif /* OB_WRP_PAGES32TO47MASK */
+
+#if defined(OB_WRP_PAGES48TO63MASK)
+ WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO63MASK) >> 24);
+#elif defined(OB_WRP_PAGES48TO127MASK)
+ WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24);
+#endif /* OB_WRP_PAGES48TO63MASK */
+
+ /* 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(OB_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 /* OB_WRP0_WRP0 */
+
+#if defined(OB_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 /* OB_WRP1_WRP1 */
+
+#if defined(OB_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 /* OB_WRP2_WRP2 */
+
+#if defined(OB_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 /* OB_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(OB_WRP1_WRP1)
+ uint16_t WRP1_Data = 0xFFFF;
+#endif /* OB_WRP1_WRP1 */
+#if defined(OB_WRP2_WRP2)
+ uint16_t WRP2_Data = 0xFFFF;
+#endif /* OB_WRP2_WRP2 */
+#if defined(OB_WRP3_WRP3)
+ uint16_t WRP3_Data = 0xFFFF;
+#endif /* OB_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_PAGES32TO47MASK)
+ WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
+#endif /* OB_WRP_PAGES32TO47MASK */
+
+#if defined(OB_WRP_PAGES48TO63MASK)
+ WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO63MASK) >> 24);
+#elif defined(OB_WRP_PAGES48TO127MASK)
+ WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24);
+#endif /* OB_WRP_PAGES48TO63MASK */
+
+
+ /* 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(OB_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 /* OB_WRP0_WRP0 */
+
+#if defined(OB_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 /* OB_WRP1_WRP1 */
+
+#if defined(OB_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 /* OB_WRP2_WRP2 */
+
+#if defined(OB_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 /* OB_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
+ * @arg @ref OB_RDP_LEVEL_2 Full chip protection
+ * @note 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_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: IWDG_SW(Bit0), RST_STOP(Bit1), RST_STDBY(Bit2), nBOOT1(Bit4),
+ * VDDA_Analog_Monitoring(Bit5) and SRAM_Parity_Enable(Bit6).
+ * For few devices, following option bytes are available: nBOOT0(Bit3) & BOOT_SEL(Bit7).
+ * @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)));
+ assert_param(IS_OB_BOOT1((UserConfig&OB_BOOT1_SET)));
+ assert_param(IS_OB_VDDA_ANALOG((UserConfig&OB_VDDA_ANALOG_ON)));
+ assert_param(IS_OB_SRAM_PARITY((UserConfig&OB_SRAM_PARITY_RESET)));
+#if defined(FLASH_OBR_BOOT_SEL)
+ assert_param(IS_OB_BOOT_SEL((UserConfig&OB_BOOT_SEL_SET)));
+ assert_param(IS_OB_BOOT0((UserConfig&OB_BOOT0_SET)));
+#endif /* FLASH_OBR_BOOT_SEL */
+
+ /* 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_OBR_BOOT_SEL)
+ OB->USER = UserConfig;
+#else
+ OB->USER = (UserConfig | 0x88);
+#endif
+
+ /* 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 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 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_RDPRT1 | FLASH_OBR_RDPRT2));
+
+ if (tmp_reg == FLASH_OBR_RDPRT1)
+ {
+ readstatus = OB_RDP_LEVEL_1;
+ }
+ else if (tmp_reg == FLASH_OBR_RDPRT2)
+ {
+ readstatus = OB_RDP_LEVEL_2;
+ }
+ else
+ {
+ readstatus = OB_RDP_LEVEL_0;
+ }
+
+ return readstatus;
+}
+
+/**
+ * @brief Return the FLASH User Option Byte value.
+ * @retval The FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1), RST_STDBY(Bit2), nBOOT1(Bit4),
+ * VDDA_Analog_Monitoring(Bit5) and SRAM_Parity_Enable(Bit6).
+ * For few devices, following option bytes are available: nBOOT0(Bit3) & BOOT_SEL(Bit7).
+ */
+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;
+
+ /* Proceed to erase the page */
+ SET_BIT(FLASH->CR, FLASH_CR_PER);
+ WRITE_REG(FLASH->AR, PageAddress);
+ SET_BIT(FLASH->CR, FLASH_CR_STRT);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_FLASH_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
