692 lines
20 KiB
C
692 lines
20 KiB
C
/**
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******************************************************************************
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* @file stm32f0xx_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 State 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.
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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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(+) Prefetch on I-Code
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(+) Option Bytes programming
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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 STM32F0xx devices.
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(#) FLASH Memory I/O Programming functions: this group includes all needed
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functions to erase and program the main memory:
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(++) Lock and Unlock the FLASH interface
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(++) Erase function: Erase page, erase all pages
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(++) Program functions: half word, word and doubleword
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(#) FLASH Option Bytes Programming functions: this group includes all needed
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functions to manage the Option Bytes:
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(++) Lock and Unlock the Option Bytes
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(++) Set/Reset the write protection
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(++) Set the Read protection Level
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(++) Program the user Option Bytes
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(++) Launch the Option Bytes loader
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(++) Erase Option Bytes
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(++) Program the data Option Bytes
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(++) Get the Write protection.
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(++) Get the user option bytes.
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(#) Interrupts and flags management functions : this group
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includes all needed functions to:
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(++) Handle FLASH interrupts
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(++) Wait for last FLASH operation according to its status
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(++) Get error flag status
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[..] In addition to these function, this driver includes a set of macros allowing
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to handle the following operations:
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(+) Set/Get the latency
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(+) Enable/Disable the prefetch buffer
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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) 2016 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 "stm32f0xx_hal.h"
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/** @addtogroup STM32F0xx_HAL_Driver
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* @{
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*/
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#ifdef HAL_FLASH_MODULE_ENABLED
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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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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup FLASH_Private_Constants FLASH Private Constants
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* @{
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*/
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/**
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* @}
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*/
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/* Private macro ---------------------------- ---------------------------------*/
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/** @defgroup FLASH_Private_Macros FLASH Private Macros
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* @{
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*/
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/**
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* @}
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*/
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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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/* Variables used for Erase pages under interruption*/
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FLASH_ProcessTypeDef pFlash;
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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_HalfWord(uint32_t Address, uint16_t Data);
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static void FLASH_SetErrorCode(void);
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extern void FLASH_PageErase(uint32_t PageAddress);
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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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@endverbatim
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* @{
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*/
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/**
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* @brief Program halfword, word or double word at a specified address
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* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
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* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
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*
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* @note If an erase and a program operations are requested simultaneously,
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* the erase operation is performed before the program one.
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*
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* @note FLASH should be previously erased before new programming (only exception to this
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* is when 0x0000 is programmed)
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*
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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 Specifie the address to be programmed.
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* @param Data Specifie the data to be programmed
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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 = HAL_ERROR;
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uint8_t index = 0U;
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uint8_t nbiterations = 0U;
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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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assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
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/* Wait for last operation to be completed */
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status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
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if(status == HAL_OK)
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{
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if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
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{
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/* Program halfword (16-bit) at a specified address. */
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nbiterations = 1U;
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}
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else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
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{
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/* Program word (32-bit = 2*16-bit) at a specified address. */
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nbiterations = 2U;
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}
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else
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{
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/* Program double word (64-bit = 4*16-bit) at a specified address. */
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nbiterations = 4U;
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}
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for (index = 0U; index < nbiterations; index++)
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{
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FLASH_Program_HalfWord((Address + (2U*index)), (uint16_t)(Data >> (16U*index)));
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/* Wait for last operation to be completed */
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status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
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/* If the program operation is completed, disable the PG Bit */
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CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
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/* In case of error, stop programming procedure */
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if (status != HAL_OK)
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{
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break;
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}
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}
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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 halfword, word or double word at a specified address with interrupt enabled.
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* @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
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* The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
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*
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* @note If an erase and a program operations are requested simultaneously,
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* the erase operation is performed before the program one.
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*
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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 Specifie the address to be programmed.
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* @param Data Specifie the data to be programmed
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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_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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/* 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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assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
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/* Enable End of FLASH Operation and Error source interrupts */
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__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
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pFlash.Address = Address;
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pFlash.Data = Data;
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if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
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{
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pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
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/* Program halfword (16-bit) at a specified address. */
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pFlash.DataRemaining = 1U;
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}
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else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
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{
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pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
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/* Program word (32-bit : 2*16-bit) at a specified address. */
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pFlash.DataRemaining = 2U;
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}
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else
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{
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pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
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/* Program double word (64-bit : 4*16-bit) at a specified address. */
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pFlash.DataRemaining = 4U;
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}
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/* Program halfword (16-bit) at a specified address. */
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FLASH_Program_HalfWord(Address, (uint16_t)Data);
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return status;
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}
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/**
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* @brief This function handles 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 addresstmp = 0U;
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/* Check FLASH operation error flags */
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if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
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{
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/* Return the faulty address */
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addresstmp = pFlash.Address;
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/* Reset address */
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pFlash.Address = 0xFFFFFFFFU;
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/* Save the Error code */
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FLASH_SetErrorCode();
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/* FLASH error interrupt user callback */
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HAL_FLASH_OperationErrorCallback(addresstmp);
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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))
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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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/* Process can continue only if no error detected */
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if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
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{
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if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
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{
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/* Nb of pages to erased can be decreased */
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pFlash.DataRemaining--;
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/* Check if there are still pages to erase */
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if(pFlash.DataRemaining != 0U)
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{
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addresstmp = pFlash.Address;
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/*Indicate user which sector has been erased */
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HAL_FLASH_EndOfOperationCallback(addresstmp);
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/*Increment sector number*/
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addresstmp = pFlash.Address + FLASH_PAGE_SIZE;
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pFlash.Address = addresstmp;
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/* If the erase operation is completed, disable the PER Bit */
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CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
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FLASH_PageErase(addresstmp);
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}
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else
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{
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/* No more pages to Erase, user callback can be called. */
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/* Reset Sector and stop Erase pages procedure */
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pFlash.Address = addresstmp = 0xFFFFFFFFU;
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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/* FLASH EOP interrupt user callback */
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HAL_FLASH_EndOfOperationCallback(addresstmp);
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}
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}
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else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
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{
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/* Operation is completed, disable the MER Bit */
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CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
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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(0);
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/* Stop Mass Erase procedure*/
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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}
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else
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{
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/* Nb of 16-bit data to program can be decreased */
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pFlash.DataRemaining--;
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/* Check if there are still 16-bit data to program */
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if(pFlash.DataRemaining != 0U)
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{
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/* Increment address to 16-bit */
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pFlash.Address += 2;
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addresstmp = pFlash.Address;
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/* Shift to have next 16-bit data */
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pFlash.Data = (pFlash.Data >> 16U);
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/* Operation is completed, disable the PG Bit */
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CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
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/*Program halfword (16-bit) at a specified address.*/
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FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
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}
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else
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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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if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
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{
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HAL_FLASH_EndOfOperationCallback(pFlash.Address);
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}
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else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
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{
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HAL_FLASH_EndOfOperationCallback(pFlash.Address - 2U);
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}
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else
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{
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HAL_FLASH_EndOfOperationCallback(pFlash.Address - 6U);
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}
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/* Reset Address and stop Program procedure */
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pFlash.Address = 0xFFFFFFFFU;
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pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
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}
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}
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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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/* Operation is completed, disable the PG, PER and MER Bits */
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CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
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/* Disable End of FLASH Operation and Error source interrupts */
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__HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
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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: No return value expected
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* - Pages Erase: Address of the 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: No return value expected
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* - Pages Erase: Address of the page 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) != RESET)
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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) != RESET)
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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 Locks 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 */
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SET_BIT(FLASH->CR, FLASH_CR_LOCK);
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return HAL_OK;
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}
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/**
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* @brief Unlock the FLASH Option Control Registers access.
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
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{
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if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_OPTWRE))
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{
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/* Authorizes the Option Byte register programming */
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WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
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WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
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}
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else
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{
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return HAL_ERROR;
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}
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return HAL_OK;
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}
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/**
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* @brief Lock the FLASH Option Control Registers access.
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
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{
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/* Clear the OPTWRE Bit to lock the FLASH Option Byte Registers access */
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CLEAR_BIT(FLASH->CR, FLASH_CR_OPTWRE);
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return HAL_OK;
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}
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/**
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* @brief Launch the option byte loading.
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* @note This function will reset automatically the MCU.
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* @retval HAL Status
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*/
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HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
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{
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/* Set the OBL_Launch bit to launch the option byte loading */
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SET_BIT(FLASH->CR, FLASH_CR_OBL_LAUNCH);
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/* Wait for last operation to be completed */
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return(FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE));
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup FLASH_Exported_Functions_Group3 Peripheral 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:
|
|
* @ref FLASH_Error_Codes
|
|
*/
|
|
uint32_t HAL_FLASH_GetError(void)
|
|
{
|
|
return pFlash.ErrorCode;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @addtogroup FLASH_Private_Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Program a half-word (16-bit) at a specified address.
|
|
* @param Address specify the address to be programmed.
|
|
* @param Data specify the data to be programmed.
|
|
* @retval None
|
|
*/
|
|
static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
|
|
{
|
|
/* Clean the error context */
|
|
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
|
|
|
|
/* Proceed to program the new data */
|
|
SET_BIT(FLASH->CR, FLASH_CR_PG);
|
|
|
|
/* Write data in the address */
|
|
*(__IO uint16_t*)Address = Data;
|
|
}
|
|
|
|
/**
|
|
* @brief Wait for a FLASH operation to complete.
|
|
* @param Timeout maximum flash operation timeout
|
|
* @retval 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();
|
|
|
|
while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
|
|
{
|
|
if (Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||
|
|
__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
|
|
{
|
|
/*Save the error code*/
|
|
FLASH_SetErrorCode();
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* There is no error flag set */
|
|
return HAL_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Set the specific FLASH error flag.
|
|
* @retval None
|
|
*/
|
|
static void FLASH_SetErrorCode(void)
|
|
{
|
|
uint32_t flags = 0U;
|
|
|
|
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
|
|
{
|
|
pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
|
|
flags |= FLASH_FLAG_WRPERR;
|
|
}
|
|
if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
|
|
{
|
|
pFlash.ErrorCode |= HAL_FLASH_ERROR_PROG;
|
|
flags |= FLASH_FLAG_PGERR;
|
|
}
|
|
/* Clear FLASH error pending bits */
|
|
__HAL_FLASH_CLEAR_FLAG(flags);
|
|
}
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_FLASH_MODULE_ENABLED */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|