765 lines
23 KiB
C
765 lines
23 KiB
C
/**
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******************************************************************************
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* @file stm32l4xx_hal_flash.c
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* @author MCD Application Team
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* @brief FLASH HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the internal FLASH memory:
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* + Program operations functions
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* + Memory Control functions
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* + Peripheral Errors functions
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*
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@verbatim
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==============================================================================
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##### FLASH peripheral features #####
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==============================================================================
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[..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
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to the Flash memory. It implements the erase and program Flash memory operations
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and the read and write protection mechanisms.
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[..] The Flash memory interface accelerates code execution with a system of instruction
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prefetch and cache lines.
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[..] The FLASH main features are:
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(+) Flash memory read operations
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(+) Flash memory program/erase operations
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(+) Read / write protections
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(+) Option bytes programming
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(+) Prefetch on I-Code
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(+) 32 cache lines of 4*64 bits on I-Code
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(+) 8 cache lines of 4*64 bits on D-Code
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(+) Error code correction (ECC) : Data in flash are 72-bits word
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(8 bits added per double word)
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##### How to use this driver #####
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==============================================================================
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[..]
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This driver provides functions and macros to configure and program the FLASH
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memory of all STM32L4xx devices.
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(#) Flash Memory IO Programming functions:
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(++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and
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HAL_FLASH_Lock() functions
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(++) Program functions: double word and fast program (full row programming)
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(++) There Two modes of programming :
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(+++) Polling mode using HAL_FLASH_Program() function
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(+++) Interrupt mode using HAL_FLASH_Program_IT() function
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(#) Interrupts and flags management functions :
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(++) Handle FLASH interrupts by calling HAL_FLASH_IRQHandler()
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(++) Callback functions are called when the flash operations are finished :
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HAL_FLASH_EndOfOperationCallback() when everything is ok, otherwise
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HAL_FLASH_OperationErrorCallback()
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(++) Get error flag status by calling HAL_GetError()
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(#) Option bytes management functions :
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(++) Lock and Unlock the option bytes using HAL_FLASH_OB_Unlock() and
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HAL_FLASH_OB_Lock() functions
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(++) Launch the reload of the option bytes using HAL_FLASH_Launch() function.
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In this case, a reset is generated
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[..]
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In addition to these functions, this driver includes a set of macros allowing
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to handle the following operations:
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(+) Set the latency
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(+) Enable/Disable the prefetch buffer
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(+) Enable/Disable the Instruction cache and the Data cache
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(+) Reset the Instruction cache and the Data cache
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(+) Enable/Disable the Flash power-down during low-power run and sleep modes
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(+) Enable/Disable the Flash interrupts
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(+) Monitor the Flash flags status
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@endverbatim
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file in
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* the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32l4xx_hal.h"
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/** @addtogroup STM32L4xx_HAL_Driver
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* @{
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*/
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/** @defgroup FLASH FLASH
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* @brief FLASH HAL module driver
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* @{
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*/
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#ifdef HAL_FLASH_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private defines -----------------------------------------------------------*/
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#if defined (STM32L4P5xx) || defined (STM32L4Q5xx) || defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
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#define FLASH_NB_DOUBLE_WORDS_IN_ROW 64
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#else
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#define FLASH_NB_DOUBLE_WORDS_IN_ROW 32
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#endif
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/* Private macros ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/** @defgroup FLASH_Private_Variables FLASH Private Variables
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* @{
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*/
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/**
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* @brief Variable used for Program/Erase sectors under interruption
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*/
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FLASH_ProcessTypeDef pFlash = {.Lock = HAL_UNLOCKED, \
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.ErrorCode = HAL_FLASH_ERROR_NONE, \
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.ProcedureOnGoing = FLASH_PROC_NONE, \
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.Address = 0U, \
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.Bank = FLASH_BANK_1, \
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.Page = 0U, \
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.NbPagesToErase = 0U, \
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.CacheToReactivate = FLASH_CACHE_DISABLED};
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/** @defgroup FLASH_Private_Functions FLASH Private Functions
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* @{
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*/
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static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data);
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static void FLASH_Program_Fast(uint32_t Address, uint32_t DataAddress);
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup FLASH_Exported_Functions FLASH Exported Functions
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* @{
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*/
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/** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
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* @brief Programming operation functions
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*
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@verbatim
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===============================================================================
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##### Programming operation functions #####
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===============================================================================
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[..]
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This subsection provides a set of functions allowing to manage the FLASH
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program operations.
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@endverbatim
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* @{
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*/
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/**
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* @brief Program double word or fast program of a row at a specified address.
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* @param TypeProgram Indicate the way to program at a specified address.
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* This parameter can be a value of @ref FLASH_Type_Program
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* @param Address specifies the address to be programmed.
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* @param Data specifies the data to be programmed
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* This parameter is the data for the double word program and the address where
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* are stored the data for the row fast program
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*
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* @retval HAL_StatusTypeDef HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
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{
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HAL_StatusTypeDef status;
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uint32_t prog_bit = 0;
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/* Process Locked */
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__HAL_LOCK(&pFlash);
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/* Check the parameters */
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assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
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/* Wait for last operation to be completed */
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status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
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if(status == HAL_OK)
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{
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pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
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/* Deactivate the data cache if they are activated to avoid data misbehavior */
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if(READ_BIT(FLASH->ACR, FLASH_ACR_DCEN) != 0U)
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{
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/* Disable data cache */
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__HAL_FLASH_DATA_CACHE_DISABLE();
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pFlash.CacheToReactivate = FLASH_CACHE_DCACHE_ENABLED;
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}
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else
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{
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pFlash.CacheToReactivate = FLASH_CACHE_DISABLED;
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}
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if(TypeProgram == FLASH_TYPEPROGRAM_DOUBLEWORD)
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{
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/* Program double-word (64-bit) at a specified address */
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FLASH_Program_DoubleWord(Address, Data);
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prog_bit = FLASH_CR_PG;
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}
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else if((TypeProgram == FLASH_TYPEPROGRAM_FAST) || (TypeProgram == FLASH_TYPEPROGRAM_FAST_AND_LAST))
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{
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/* Fast program a 32 row double-word (64-bit) at a specified address */
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FLASH_Program_Fast(Address, (uint32_t)Data);
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/* If it is the last row, the bit will be cleared at the end of the operation */
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if(TypeProgram == FLASH_TYPEPROGRAM_FAST_AND_LAST)
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{
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prog_bit = FLASH_CR_FSTPG;
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}
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}
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else
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{
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/* Nothing to do */
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}
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/* Wait for last operation to be completed */
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status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
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/* If the program operation is completed, disable the PG or FSTPG Bit */
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if (prog_bit != 0U)
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{
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CLEAR_BIT(FLASH->CR, prog_bit);
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}
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/* Flush the caches to be sure of the data consistency */
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FLASH_FlushCaches();
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}
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/* Process Unlocked */
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__HAL_UNLOCK(&pFlash);
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return status;
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}
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/**
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* @brief Program double word or fast program of a row at a specified address with interrupt enabled.
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* @param TypeProgram Indicate the way to program at a specified address.
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* This parameter can be a value of @ref FLASH_Type_Program
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* @param Address specifies the address to be programmed.
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* @param Data specifies the data to be programmed
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* This parameter is the data for the double word program and the address where
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* are stored the data for the row fast program
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*
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
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{
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HAL_StatusTypeDef status = HAL_OK;
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/* Check the parameters */
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assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
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/* Process Locked */
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__HAL_LOCK(&pFlash);
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pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
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/* Deactivate the data cache if they are activated to avoid data misbehavior */
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if(READ_BIT(FLASH->ACR, FLASH_ACR_DCEN) != 0U)
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{
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/* Disable data cache */
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__HAL_FLASH_DATA_CACHE_DISABLE();
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pFlash.CacheToReactivate = FLASH_CACHE_DCACHE_ENABLED;
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}
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else
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{
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pFlash.CacheToReactivate = FLASH_CACHE_DISABLED;
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}
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/* Set internal variables used by the IRQ handler */
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if(TypeProgram == FLASH_TYPEPROGRAM_FAST_AND_LAST)
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{
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pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM_LAST;
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}
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else
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{
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pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM;
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}
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pFlash.Address = Address;
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/* Enable End of Operation and Error interrupts */
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__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_OPERR);
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if(TypeProgram == FLASH_TYPEPROGRAM_DOUBLEWORD)
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{
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/* Program double-word (64-bit) at a specified address */
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FLASH_Program_DoubleWord(Address, Data);
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}
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else if((TypeProgram == FLASH_TYPEPROGRAM_FAST) || (TypeProgram == FLASH_TYPEPROGRAM_FAST_AND_LAST))
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{
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/* Fast program a 32 row double-word (64-bit) at a specified address */
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FLASH_Program_Fast(Address, (uint32_t)Data);
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}
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else
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{
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/* Nothing to do */
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}
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return status;
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}
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/**
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* @brief Handle FLASH interrupt request.
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* @retval None
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*/
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void HAL_FLASH_IRQHandler(void)
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{
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uint32_t tmp_page;
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uint32_t error;
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FLASH_ProcedureTypeDef procedure;
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/* If the operation is completed, disable the PG, PNB, MER1, MER2 and PER Bit */
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CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_MER1 | FLASH_CR_PER | FLASH_CR_PNB));
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#if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || \
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defined (STM32L496xx) || defined (STM32L4A6xx) || \
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defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
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defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
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CLEAR_BIT(FLASH->CR, FLASH_CR_MER2);
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#endif
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/* Disable the FSTPG Bit only if it is the last row programmed */
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if(pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM_LAST)
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{
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CLEAR_BIT(FLASH->CR, FLASH_CR_FSTPG);
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}
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/* Check FLASH operation error flags */
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error = (FLASH->SR & FLASH_FLAG_SR_ERRORS);
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if (error !=0U)
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{
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/*Save the error code*/
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pFlash.ErrorCode |= error;
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/* Clear error programming flags */
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__HAL_FLASH_CLEAR_FLAG(error);
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/* Flush the caches to be sure of the data consistency */
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FLASH_FlushCaches() ;
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/* FLASH error interrupt user callback */
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procedure = pFlash.ProcedureOnGoing;
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if(procedure == FLASH_PROC_PAGE_ERASE)
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{
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HAL_FLASH_OperationErrorCallback(pFlash.Page);
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}
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else if(procedure == FLASH_PROC_MASS_ERASE)
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{
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HAL_FLASH_OperationErrorCallback(pFlash.Bank);
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}
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else if((procedure == FLASH_PROC_PROGRAM) ||
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(procedure == FLASH_PROC_PROGRAM_LAST))
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{
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HAL_FLASH_OperationErrorCallback(pFlash.Address);
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}
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else
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{
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HAL_FLASH_OperationErrorCallback(0U);
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}
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/*Stop the procedure ongoing*/
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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}
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/* Check FLASH End of Operation flag */
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if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != 0U)
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{
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/* Clear FLASH End of Operation pending bit */
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
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if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGE_ERASE)
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{
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/* Nb of pages to erased can be decreased */
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pFlash.NbPagesToErase--;
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/* Check if there are still pages to erase*/
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if(pFlash.NbPagesToErase != 0U)
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{
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/* Indicate user which page has been erased*/
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HAL_FLASH_EndOfOperationCallback(pFlash.Page);
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/* Increment page number */
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pFlash.Page++;
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tmp_page = pFlash.Page;
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FLASH_PageErase(tmp_page, pFlash.Bank);
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}
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else
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{
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/* No more pages to Erase */
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/* Reset Address and stop Erase pages procedure */
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pFlash.Page = 0xFFFFFFFFU;
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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/* Flush the caches to be sure of the data consistency */
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FLASH_FlushCaches() ;
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/* FLASH EOP interrupt user callback */
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HAL_FLASH_EndOfOperationCallback(pFlash.Page);
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}
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}
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else
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{
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/* Flush the caches to be sure of the data consistency */
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FLASH_FlushCaches() ;
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procedure = pFlash.ProcedureOnGoing;
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if(procedure == FLASH_PROC_MASS_ERASE)
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{
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/* MassErase ended. Return the selected bank */
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/* FLASH EOP interrupt user callback */
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HAL_FLASH_EndOfOperationCallback(pFlash.Bank);
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}
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else if((procedure == FLASH_PROC_PROGRAM) ||
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(procedure == FLASH_PROC_PROGRAM_LAST))
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{
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/* Program ended. Return the selected address */
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/* FLASH EOP interrupt user callback */
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HAL_FLASH_EndOfOperationCallback(pFlash.Address);
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}
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else
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{
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/* Nothing to do */
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}
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/*Clear the procedure ongoing*/
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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}
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}
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if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
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{
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/* Disable End of Operation and Error interrupts */
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__HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_OPERR);
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/* Process Unlocked */
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__HAL_UNLOCK(&pFlash);
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}
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}
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/**
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* @brief FLASH end of operation interrupt callback.
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* @param ReturnValue The value saved in this parameter depends on the ongoing procedure
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* Mass Erase: Bank number which has been requested to erase
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* Page Erase: Page which has been erased
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* (if 0xFFFFFFFF, it means that all the selected pages have been erased)
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* Program: Address which was selected for data program
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* @retval None
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*/
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__weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
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{
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/* Prevent unused argument(s) compilation warning */
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UNUSED(ReturnValue);
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/* NOTE : This function should not be modified, when the callback is needed,
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the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
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*/
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}
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/**
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* @brief FLASH operation error interrupt callback.
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* @param ReturnValue The value saved in this parameter depends on the ongoing procedure
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* Mass Erase: Bank number which has been requested to erase
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* Page Erase: Page number which returned an error
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* Program: Address which was selected for data program
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* @retval None
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*/
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__weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
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{
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/* Prevent unused argument(s) compilation warning */
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UNUSED(ReturnValue);
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/* NOTE : This function should not be modified, when the callback is needed,
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the HAL_FLASH_OperationErrorCallback could be implemented in the user file
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*/
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}
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/**
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* @}
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*/
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/** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
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* @brief Management functions
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*
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@verbatim
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===============================================================================
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##### Peripheral Control functions #####
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===============================================================================
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[..]
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|
This subsection provides a set of functions allowing to control the FLASH
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memory operations.
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@endverbatim
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* @{
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*/
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/**
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* @brief Unlock the FLASH control register access.
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_Unlock(void)
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{
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HAL_StatusTypeDef status = HAL_OK;
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if(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U)
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{
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/* Authorize the FLASH Registers access */
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WRITE_REG(FLASH->KEYR, FLASH_KEY1);
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WRITE_REG(FLASH->KEYR, FLASH_KEY2);
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/* Verify Flash is unlocked */
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if(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != 0U)
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{
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status = HAL_ERROR;
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}
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}
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return status;
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}
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/**
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* @brief Lock the FLASH control register access.
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_Lock(void)
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{
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/* Set the LOCK Bit to lock the FLASH Registers access */
|
|
SET_BIT(FLASH->CR, FLASH_CR_LOCK);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Unlock the FLASH Option Bytes Registers access.
|
|
* @retval HAL Status
|
|
*/
|
|
HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
|
|
{
|
|
if(READ_BIT(FLASH->CR, FLASH_CR_OPTLOCK) != 0U)
|
|
{
|
|
/* Authorizes the Option Byte register programming */
|
|
WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
|
|
WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
|
|
}
|
|
else
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Lock the FLASH Option Bytes Registers access.
|
|
* @retval HAL Status
|
|
*/
|
|
HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
|
|
{
|
|
/* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
|
|
SET_BIT(FLASH->CR, FLASH_CR_OPTLOCK);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Launch the option byte loading.
|
|
* @retval HAL Status
|
|
*/
|
|
HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
|
|
{
|
|
/* Set the bit to force the option byte reloading */
|
|
SET_BIT(FLASH->CR, FLASH_CR_OBL_LAUNCH);
|
|
|
|
/* Wait for last operation to be completed */
|
|
return(FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE));
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup FLASH_Exported_Functions_Group3 Peripheral State and Errors functions
|
|
* @brief Peripheral Errors functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Peripheral Errors functions #####
|
|
===============================================================================
|
|
[..]
|
|
This subsection permits 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 HAL_FLASH_ERROR_RD: FLASH Read Protection error flag (PCROP)
|
|
* @arg HAL_FLASH_ERROR_PGS: FLASH Programming Sequence error flag
|
|
* @arg HAL_FLASH_ERROR_PGP: FLASH Programming Parallelism error flag
|
|
* @arg HAL_FLASH_ERROR_PGA: FLASH Programming Alignment error flag
|
|
* @arg HAL_FLASH_ERROR_WRP: FLASH Write protected error flag
|
|
* @arg HAL_FLASH_ERROR_OPERATION: FLASH operation Error flag
|
|
* @arg HAL_FLASH_ERROR_NONE: No error set
|
|
* @arg HAL_FLASH_ERROR_OP: FLASH Operation error
|
|
* @arg HAL_FLASH_ERROR_PROG: FLASH Programming error
|
|
* @arg HAL_FLASH_ERROR_WRP: FLASH Write protection error
|
|
* @arg HAL_FLASH_ERROR_PGA: FLASH Programming alignment error
|
|
* @arg HAL_FLASH_ERROR_SIZ: FLASH Size error
|
|
* @arg HAL_FLASH_ERROR_PGS: FLASH Programming sequence error
|
|
* @arg HAL_FLASH_ERROR_MIS: FLASH Fast programming data miss error
|
|
* @arg HAL_FLASH_ERROR_FAST: FLASH Fast programming error
|
|
* @arg HAL_FLASH_ERROR_RD: FLASH PCROP read error
|
|
* @arg HAL_FLASH_ERROR_OPTV: FLASH Option validity error
|
|
* @arg FLASH_FLAG_PEMPTY : FLASH Boot from not programmed flash (apply only for STM32L43x/STM32L44x devices)
|
|
*/
|
|
uint32_t HAL_FLASH_GetError(void)
|
|
{
|
|
return pFlash.ErrorCode;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/** @addtogroup FLASH_Private_Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Wait for a FLASH operation to complete.
|
|
* @param Timeout maximum flash operation timeout
|
|
* @retval HAL_StatusTypeDef HAL Status
|
|
*/
|
|
HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
|
|
{
|
|
/* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
|
|
Even if the FLASH operation fails, the BUSY flag will be reset and an error
|
|
flag will be set */
|
|
|
|
uint32_t tickstart = HAL_GetTick();
|
|
uint32_t error;
|
|
|
|
while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
|
|
{
|
|
if(Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if((HAL_GetTick() - tickstart) >= Timeout)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
error = (FLASH->SR & FLASH_FLAG_SR_ERRORS);
|
|
|
|
if(error != 0u)
|
|
{
|
|
/*Save the error code*/
|
|
pFlash.ErrorCode |= error;
|
|
|
|
/* Clear error programming flags */
|
|
__HAL_FLASH_CLEAR_FLAG(error);
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Check FLASH End of Operation flag */
|
|
if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
|
|
{
|
|
/* Clear FLASH End of Operation pending bit */
|
|
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
|
|
}
|
|
|
|
/* If there is an error flag set */
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Program double-word (64-bit) at a specified address.
|
|
* @param Address specifies the address to be programmed.
|
|
* @param Data specifies the data to be programmed.
|
|
* @retval None
|
|
*/
|
|
static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
|
|
|
|
/* Set PG bit */
|
|
SET_BIT(FLASH->CR, FLASH_CR_PG);
|
|
|
|
/* Program first word */
|
|
*(__IO uint32_t*)Address = (uint32_t)Data;
|
|
|
|
/* Barrier to ensure programming is performed in 2 steps, in right order
|
|
(independently of compiler optimization behavior) */
|
|
__ISB();
|
|
|
|
/* Program second word */
|
|
*(__IO uint32_t*)(Address+4U) = (uint32_t)(Data >> 32);
|
|
}
|
|
|
|
/**
|
|
* @brief Fast program a row double-word (64-bit) at a specified address.
|
|
* @param Address specifies the address to be programmed.
|
|
* @param DataAddress specifies the address where the data are stored.
|
|
* @retval None
|
|
*/
|
|
static void FLASH_Program_Fast(uint32_t Address, uint32_t DataAddress)
|
|
{
|
|
uint32_t primask_bit;
|
|
uint8_t row_index = (2*FLASH_NB_DOUBLE_WORDS_IN_ROW);
|
|
__IO uint32_t *dest_addr = (__IO uint32_t*)Address;
|
|
__IO uint32_t *src_addr = (__IO uint32_t*)DataAddress;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_MAIN_MEM_ADDRESS(Address));
|
|
|
|
/* Set FSTPG bit */
|
|
SET_BIT(FLASH->CR, FLASH_CR_FSTPG);
|
|
|
|
/* Disable interrupts to avoid any interruption during the loop */
|
|
primask_bit = __get_PRIMASK();
|
|
__disable_irq();
|
|
|
|
/* Program the double word of the row */
|
|
do
|
|
{
|
|
*dest_addr = *src_addr;
|
|
dest_addr++;
|
|
src_addr++;
|
|
row_index--;
|
|
} while (row_index != 0U);
|
|
|
|
/* Re-enable the interrupts */
|
|
__set_PRIMASK(primask_bit);
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_FLASH_MODULE_ENABLED */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|