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+/**
+ ******************************************************************************
+ * @file stm32l1xx_hal_flash.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 5-September-2014
+ * @brief FLASH HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the internal FLASH memory:
+ * + FLASH Interface configuration
+ * + FLASH Memory Programming
+ * + Interrupts and flags management
+ *
+ * @verbatim
+
+ ==============================================================================
+ ##### FLASH peripheral features #####
+ ==============================================================================
+
+ [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
+ to the Flash memory. It implements the erase and program Flash memory operations
+ and the read and write protection mechanisms.
+
+ [..] The Flash memory interface accelerates code execution with a system of instruction prefetch.
+
+ [..] The FLASH main features are:
+ (+) Flash memory read operations
+ (+) Flash memory program/erase operations
+ (+) Read / write protections
+ (+) Prefetch on I-Code
+ (+) Option Bytes programming
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..] This driver provides functions to configure and program the Flash
+ memory of all STM32L1xx devices.
+
+ (#) FLASH Memory Programming functions: this group includes all
+ needed functions to erase and program the main memory:
+ (++) Lock and Unlock the Flash interface.
+ (++) Erase function: Erase Page.
+ (++) Program functions: Fast Word and Half Page(should be
+ executed from internal SRAM).
+
+ (#) DATA EEPROM Programming functions: this group includes all
+ needed functions to erase and program the DATA EEPROM memory:
+ (++) Lock and Unlock the DATA EEPROM interface.
+ (++) Erase function: Erase Byte, erase HalfWord, erase Word, erase
+ Double Word (should be executed from internal SRAM).
+ (++) Program functions: Fast Program Byte, Fast Program Half-Word,
+ FastProgramWord, Program Byte, Program Half-Word,
+ Program Word and Program Double-Word (should be executed
+ from internal SRAM).
+
+ (#) FLASH Option Bytes Programming functions: this group includes
+ all needed functions to:
+ (++) Lock and Unlock the Flash Option bytes.
+ (++) Set/Reset the write protection.
+ (++) Set the Read protection Level.
+ (++) Set the BOR level.
+ (++) Program the user option Bytes.
+ (++) Launch the Option Bytes loader.
+ (++) Get the Write protection.
+ (++) Get the read protection status.
+ (++) Get the BOR level.
+ (++) Get the user option bytes.
+
+ (#) Interrupts and flags management functions :
+ (++) Handle FLASH interrupts by calling HAL_FLASH_IRQHandler()
+ (++) Wait for last FLASH operation according to its status
+ (++) Get error flag status by calling HAL_GetErrorCode()
+
+ (#) FLASH Interface configuration functions: this group includes
+ the management of following features:
+ (++) Enable/Disable the RUN PowerDown mode.
+ (++) Enable/Disable the SLEEP PowerDown mode.
+
+ (#) FLASH Peripheral State methods: this group includes
+ the management of following features:
+ (++) Wait for the FLASH operation
+ (++) Get the specific FLASH error flag
+
+ [..] In addition to these function, this driver includes a set of macros allowing
+ to handle the following operations:
+
+ (+) Set/Get the latency
+ (+) Enable/Disable the prefetch buffer
+ (+) Enable/Disable the 64 bit Read Access.
+ (+) Enable/Disable the Flash power-down
+ (+) Enable/Disable the FLASH interrupts
+ (+) Monitor the FLASH flags status
+
+ ===============================================================================
+ ##### Programming operation functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the FLASH
+ program operations.
+
+ [..] The FLASH Memory Programming functions, includes the following functions:
+ (+) HAL_FLASH_Unlock(void);
+ (+) HAL_FLASH_Lock(void);
+ (+) HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint32_t Data)
+ (+) HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint32_t Data)
+
+ [..] Any operation of erase or program should follow these steps:
+ (#) Call the HAL_FLASH_Unlock() function to enable the flash control register and
+ program memory access.
+ (#) Call the desired function to erase page or program data.
+ (#) Call the HAL_FLASH_Lock() to disable the flash program memory access
+ (recommended to protect the FLASH memory against possible unwanted operation).
+
+ ==============================================================================
+ ##### Option Bytes Programming functions #####
+ ==============================================================================
+
+ [..] The FLASH_Option Bytes Programming_functions, includes the following functions:
+ (+) HAL_FLASH_OB_Unlock(void);
+ (+) HAL_FLASH_OB_Lock(void);
+ (+) HAL_FLASH_OB_Launch(void);
+ (+) HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit);
+ (+) HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit);
+
+ [..] Any operation of erase or program should follow these steps:
+ (#) Call the HAL_FLASH_OB_Unlock() function to enable the Flash option control
+ register access.
+ (#) Call the following functions to program the desired option bytes.
+ (++) HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit);
+ (#) Once all needed option bytes to be programmed are correctly written, call the
+ HAL_FLASH_OB_Launch(void) function to launch the Option Bytes programming process.
+ (#) Call the HAL_FLASH_OB_Lock() to disable the Flash option control register access (recommended
+ to protect the option Bytes against possible unwanted operations).
+
+ * @endverbatim
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2014 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 "stm32l1xx_hal.h"
+
+/** @addtogroup STM32L1xx_HAL_Driver
+ * @{
+ */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+
+/** @defgroup FLASH FLASH
+ * @brief FLASH driver modules
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/** @defgroup FLASH_Internal_Variables FLASH Internal Variables
+ * @{
+ */
+
+/**
+ * @brief Variable used for Program/Erase sectors under interruption
+ */
+FLASH_ProcessTypeDef ProcFlash;
+
+
+/**
+ * @}
+ */
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup FLASH_Exported_Functions FLASH Exported functions
+ * @{
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
+ * @brief Programming operation functions
+ *
+@verbatim
+@endverbatim
+ * @{
+ */
+/**
+ * @brief Program word at a specified address
+ * @note To correctly run this function, the HAL_FLASH_Unlock() function
+ * must be called before.
+ * Call the HAL_FLASH_Lock() to disable the flash memory access
+ * (recommended to protect the FLASH memory against possible unwanted operation).
+ * @param TypeProgram: Indicate the way to program at a specified address.
+ * This parameter can be a value of @ref FLASH_Type_Program
+ * @param Address: specifies the address to be programmed.
+ * @param Data: specifies the data to be programmed
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+
+ /* Process Locked */
+ __HAL_LOCK(&ProcFlash);
+
+ /* Check the parameters */
+ assert_param(IS_TYPEPROGRAMFLASH(TypeProgram));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ /*Program word (32-bit) at a specified address.*/
+ *(__IO uint32_t *)Address = Data;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&ProcFlash);
+
+ return status;
+}
+
+/**
+ * @brief Program word at a specified address with interrupt enabled.
+ * @param TypeProgram: Indicate the way to program at a specified address.
+ * This parameter can be a value of @ref FLASH_Type_Program
+ * @param Address: specifies the address to be programmed.
+ * @param Data: specifies the data to be programmed
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(&ProcFlash);
+
+ /* Check the parameters */
+ assert_param(IS_TYPEPROGRAMFLASH(TypeProgram));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
+
+ /* Enable End of FLASH Operation interrupt */
+ __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP);
+
+ /* Enable Error source interrupt */
+ __HAL_FLASH_ENABLE_IT(FLASH_IT_ERR);
+
+ /* Clear pending flags (if any) */
+ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_MASK);
+
+ ProcFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM;
+ ProcFlash.Address = Address;
+
+ if(TypeProgram == TYPEPROGRAM_WORD)
+ {
+ /*Program word (32-bit) at a specified address.*/
+ *(__IO uint32_t *)Address = Data;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&ProcFlash);
+
+ return status;
+}
+
+/**
+ * @brief FLASH end of operation interrupt callback
+ * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
+ * - Pages Erase: Sector which has been erased
+ * (if 0xFFFFFFFF, it means that all the selected sectors have been erased)
+ * - Program: Address which was selected for data program
+ * @retval none
+ */
+__weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief FLASH operation error interrupt callback
+ * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
+ * - Pagess Erase: Sector number which returned an error
+ * - Program: Address which was selected for data program
+ * @retval none
+ */
+__weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
+{
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_FLASH_OperationErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
+ * @brief management functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the FLASH
+ memory operations.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Unlock the FLASH control register access
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Unlock(void)
+{
+ if((FLASH->PECR & FLASH_PECR_PRGLOCK) != RESET)
+ {
+ /* Unlocking FLASH_PECR register access*/
+ if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
+ {
+ FLASH->PEKEYR = FLASH_PEKEY1;
+ FLASH->PEKEYR = FLASH_PEKEY2;
+ }
+
+ /* Unlocking the program memory access */
+ FLASH->PRGKEYR = FLASH_PRGKEY1;
+ FLASH->PRGKEYR = FLASH_PRGKEY2;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Locks the FLASH control register access
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Lock(void)
+{
+ /* Set the PRGLOCK Bit to lock the program memory access */
+ SET_BIT(FLASH->PECR, FLASH_PECR_PRGLOCK);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Unlock the FLASH Option Control Registers access.
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
+{
+ if((FLASH->PECR & FLASH_PECR_OPTLOCK) != RESET)
+ {
+ /* Unlocking FLASH_PECR register access*/
+ if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
+ {
+ /* Unlocking FLASH_PECR register access*/
+ FLASH->PEKEYR = FLASH_PEKEY1;
+ FLASH->PEKEYR = FLASH_PEKEY2;
+ }
+
+ /* Unlocking the option bytes block access */
+ FLASH->OPTKEYR = FLASH_OPTKEY1;
+ FLASH->OPTKEYR = FLASH_OPTKEY2;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Lock the FLASH Option Control Registers access.
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
+{
+ /* Set the OPTLOCK Bit to lock the option bytes block access */
+ SET_BIT(FLASH->PECR, FLASH_PECR_OPTLOCK);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Launch the option byte loading.
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
+{
+ /* Set the OBL_Launch bit to lauch the option byte loading */
+ SET_BIT(FLASH->PECR, FLASH_PECR_OBL_LAUNCH);
+
+ /* Wait for last operation to be completed */
+ return(FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE));
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group3 Peripheral State and Errors functions
+ * @brief Peripheral Errors functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Errors functions #####
+ ===============================================================================
+ [..]
+ This subsection permit to get in run-time Errors of the FLASH peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Get the specific FLASH error flag.
+ * @retval FLASH_ErrorCode: The returned value can be:
+ * @arg FLASH_ERROR_WRP: FLASH Write protected error flag
+ * @arg FLASH_ERROR_PGA: FLASH Programming Alignment error flag
+ * @arg FLASH_ERROR_SIZE: FLASH Size error flag
+ * @arg FLASH_ERROR_OPTV: Option validity error flag
+ * @arg FLASH_ERROR_OPTVUSR: Option UserValidity Error flag (available only Cat.3, Cat.4 and Cat.5 devices)
+ * @arg FLASH_ERROR_RD: FLASH Read Protection error flag (PCROP) (available only Cat.2 and Cat.3 devices)
+ */
+FLASH_ErrorTypeDef HAL_FLASH_GetError(void)
+{
+ return ProcFlash.ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/