731 lines
24 KiB
C
731 lines
24 KiB
C
/**
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******************************************************************************
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* @file EEPROM_Emulation/src/eeprom.c
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* @author MCD Application Team
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* @version V1.3.0
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* @date 18-December-2015
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* @brief This file provides all the EEPROM emulation firmware functions.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/** @addtogroup EEPROM_Emulation
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* @{
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "eeprom.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Global variable used to store variable value in read sequence */
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uint16_t DataVar = 0;
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/* Virtual address defined by the user: 0xFFFF value is prohibited */
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extern uint16_t VirtAddVarTab[NB_OF_VAR];
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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static HAL_StatusTypeDef EE_Format(void);
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static uint16_t EE_FindValidPage(uint8_t Operation);
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static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
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static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data);
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static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
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/**
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* @brief Restore the pages to a known good state in case of page's status
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* corruption after a power loss.
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* @param None.
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* @retval - Flash error code: on write Flash error
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* - FLASH_COMPLETE: on success
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*/
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uint16_t EE_Init(void)
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{
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uint16_t pagestatus0 = 6, pagestatus1 = 6;
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uint16_t varidx = 0;
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uint16_t eepromstatus = 0, readstatus = 0;
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int16_t x = -1;
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HAL_StatusTypeDef flashstatus;
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uint32_t page_error = 0;
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FLASH_EraseInitTypeDef s_eraseinit;
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/* Get Page0 status */
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pagestatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
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/* Get Page1 status */
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pagestatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
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/* Fill EraseInit structure*/
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE0_ID;
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s_eraseinit.NbPages = 1;
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/* Check for invalid header states and repair if necessary */
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switch (pagestatus0)
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{
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case ERASED:
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if (pagestatus1 == VALID_PAGE) /* Page0 erased, Page1 valid */
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{
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/* Erase Page0 */
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if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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}
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else if (pagestatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
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{
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/* Erase Page0 */
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if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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/* Mark Page1 as valid */
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flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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else /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
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{
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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flashstatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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break;
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case RECEIVE_DATA:
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if (pagestatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
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{
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/* Transfer data from Page1 to Page0 */
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for (varidx = 0; varidx < NB_OF_VAR; varidx++)
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{
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if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[varidx])
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{
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x = varidx;
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}
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if (varidx != x)
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{
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/* Read the last variables' updates */
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readstatus = EE_ReadVariable(VirtAddVarTab[varidx], &DataVar);
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/* In case variable corresponding to the virtual address was found */
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if (readstatus != 0x1)
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{
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/* Transfer the variable to the Page0 */
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eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[varidx], DataVar);
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/* If program operation was failed, a Flash error code is returned */
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if (eepromstatus != HAL_OK)
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{
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return eepromstatus;
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}
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}
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}
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}
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/* Mark Page0 as valid */
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flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE1_ID;
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s_eraseinit.NbPages = 1;
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/* Erase Page1 */
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if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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}
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else if (pagestatus1 == ERASED) /* Page0 receive, Page1 erased */
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{
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE1_ID;
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s_eraseinit.NbPages = 1;
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/* Erase Page1 */
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if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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/* Mark Page0 as valid */
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flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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else /* Invalid state -> format eeprom */
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{
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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flashstatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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break;
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case VALID_PAGE:
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if (pagestatus1 == VALID_PAGE) /* Invalid state -> format eeprom */
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{
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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flashstatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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else if (pagestatus1 == ERASED) /* Page0 valid, Page1 erased */
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{
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE1_ID;
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s_eraseinit.NbPages = 1;
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/* Erase Page1 */
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if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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}
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else /* Page0 valid, Page1 receive */
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{
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/* Transfer data from Page0 to Page1 */
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for (varidx = 0; varidx < NB_OF_VAR; varidx++)
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{
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if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[varidx])
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{
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x = varidx;
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}
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if (varidx != x)
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{
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/* Read the last variables' updates */
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readstatus = EE_ReadVariable(VirtAddVarTab[varidx], &DataVar);
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/* In case variable corresponding to the virtual address was found */
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if (readstatus != 0x1)
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{
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/* Transfer the variable to the Page1 */
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eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[varidx], DataVar);
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/* If program operation was failed, a Flash error code is returned */
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if (eepromstatus != HAL_OK)
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{
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return eepromstatus;
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}
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}
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}
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}
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/* Mark Page1 as valid */
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flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE0_ID;
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s_eraseinit.NbPages = 1;
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/* Erase Page0 */
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if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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}
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break;
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default: /* Any other state -> format eeprom */
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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flashstatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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break;
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}
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return HAL_OK;
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}
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/**
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* @brief Verify if specified page is fully erased.
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* @param Address: page address
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* This parameter can be one of the following values:
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* @arg PAGE0_BASE_ADDRESS: Page0 base address
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* @arg PAGE1_BASE_ADDRESS: Page1 base address
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* @retval page fully erased status:
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* - 0: if Page not erased
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* - 1: if Page erased
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*/
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uint16_t EE_VerifyPageFullyErased(uint32_t Address)
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{
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uint32_t readstatus = 1;
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uint16_t addressvalue = 0x5555;
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/* Check each active page address starting from end */
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while (Address <= PAGE0_END_ADDRESS)
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{
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/* Get the current location content to be compared with virtual address */
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addressvalue = (*(__IO uint16_t*)Address);
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/* Compare the read address with the virtual address */
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if (addressvalue != ERASED)
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{
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/* In case variable value is read, reset readstatus flag */
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readstatus = 0;
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break;
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}
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/* Next address location */
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Address = Address + 4;
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}
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/* Return readstatus value: (0: Page not erased, 1: Page erased) */
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return readstatus;
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}
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/**
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* @brief Returns the last stored variable data, if found, which correspond to
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* the passed virtual address
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* @param VirtAddress: Variable virtual address
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* @param Data: Global variable contains the read variable value
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* @retval Success or error status:
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* - 0: if variable was found
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* - 1: if the variable was not found
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* - NO_VALID_PAGE: if no valid page was found.
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*/
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uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data)
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{
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uint16_t validpage = PAGE0;
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uint16_t addressvalue = 0x5555, readstatus = 1;
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uint32_t address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
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/* Get active Page for read operation */
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validpage = EE_FindValidPage(READ_FROM_VALID_PAGE);
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/* Check if there is no valid page */
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if (validpage == NO_VALID_PAGE)
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{
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return NO_VALID_PAGE;
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}
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/* Get the valid Page start Address */
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PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(validpage * PAGE_SIZE));
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/* Get the valid Page end Address */
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address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + validpage) * PAGE_SIZE));
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/* Check each active page address starting from end */
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while (address > (PageStartAddress + 2))
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{
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/* Get the current location content to be compared with virtual address */
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addressvalue = (*(__IO uint16_t*)address);
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/* Compare the read address with the virtual address */
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if (addressvalue == VirtAddress)
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{
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/* Get content of Address-2 which is variable value */
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*Data = (*(__IO uint16_t*)(address - 2));
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/* In case variable value is read, reset readstatus flag */
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readstatus = 0;
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break;
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}
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else
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{
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/* Next address location */
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address = address - 4;
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}
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}
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/* Return readstatus value: (0: variable exist, 1: variable doesn't exist) */
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return readstatus;
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}
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/**
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* @brief Writes/upadtes variable data in EEPROM.
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* @param VirtAddress: Variable virtual address
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* @param Data: 16 bit data to be written
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* @retval Success or error status:
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* - FLASH_COMPLETE: on success
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* - PAGE_FULL: if valid page is full
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* - NO_VALID_PAGE: if no valid page was found
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* - Flash error code: on write Flash error
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*/
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uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data)
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{
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uint16_t Status = 0;
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/* Write the variable virtual address and value in the EEPROM */
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Status = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
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/* In case the EEPROM active page is full */
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if (Status == PAGE_FULL)
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{
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/* Perform Page transfer */
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Status = EE_PageTransfer(VirtAddress, Data);
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}
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/* Return last operation status */
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return Status;
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}
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/**
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* @brief Erases PAGE and PAGE1 and writes VALID_PAGE header to PAGE
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* @param None
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* @retval Status of the last operation (Flash write or erase) done during
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* EEPROM formating
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*/
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static HAL_StatusTypeDef EE_Format(void)
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{
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HAL_StatusTypeDef flashstatus = HAL_OK;
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uint32_t page_error = 0;
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FLASH_EraseInitTypeDef s_eraseinit;
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s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
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s_eraseinit.PageAddress = PAGE0_ID;
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s_eraseinit.NbPages = 1;
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/* Erase Page0 */
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if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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/* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
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flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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s_eraseinit.PageAddress = PAGE1_ID;
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/* Erase Page1 */
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if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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{
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flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
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/* If erase operation was failed, a Flash error code is returned */
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if (flashstatus != HAL_OK)
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{
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return flashstatus;
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}
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}
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return HAL_OK;
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}
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|
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/**
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* @brief Find valid Page for write or read operation
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* @param Operation: operation to achieve on the valid page.
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* This parameter can be one of the following values:
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* @arg READ_FROM_VALID_PAGE: read operation from valid page
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* @arg WRITE_IN_VALID_PAGE: write operation from valid page
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* @retval Valid page number (PAGE or PAGE1) or NO_VALID_PAGE in case
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* of no valid page was found
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*/
|
|
static uint16_t EE_FindValidPage(uint8_t Operation)
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{
|
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uint16_t pagestatus0 = 6, pagestatus1 = 6;
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|
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/* Get Page0 actual status */
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pagestatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
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/* Get Page1 actual status */
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pagestatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
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|
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/* Write or read operation */
|
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switch (Operation)
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{
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case WRITE_IN_VALID_PAGE: /* ---- Write operation ---- */
|
|
if (pagestatus1 == VALID_PAGE)
|
|
{
|
|
/* Page0 receiving data */
|
|
if (pagestatus0 == RECEIVE_DATA)
|
|
{
|
|
return PAGE0; /* Page0 valid */
|
|
}
|
|
else
|
|
{
|
|
return PAGE1; /* Page1 valid */
|
|
}
|
|
}
|
|
else if (pagestatus0 == VALID_PAGE)
|
|
{
|
|
/* Page1 receiving data */
|
|
if (pagestatus1 == RECEIVE_DATA)
|
|
{
|
|
return PAGE1; /* Page1 valid */
|
|
}
|
|
else
|
|
{
|
|
return PAGE0; /* Page0 valid */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return NO_VALID_PAGE; /* No valid Page */
|
|
}
|
|
|
|
case READ_FROM_VALID_PAGE: /* ---- Read operation ---- */
|
|
if (pagestatus0 == VALID_PAGE)
|
|
{
|
|
return PAGE0; /* Page0 valid */
|
|
}
|
|
else if (pagestatus1 == VALID_PAGE)
|
|
{
|
|
return PAGE1; /* Page1 valid */
|
|
}
|
|
else
|
|
{
|
|
return NO_VALID_PAGE ; /* No valid Page */
|
|
}
|
|
|
|
default:
|
|
return PAGE0; /* Page0 valid */
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Verify if active page is full and Writes variable in EEPROM.
|
|
* @param VirtAddress: 16 bit virtual address of the variable
|
|
* @param Data: 16 bit data to be written as variable value
|
|
* @retval Success or error status:
|
|
* - FLASH_COMPLETE: on success
|
|
* - PAGE_FULL: if valid page is full
|
|
* - NO_VALID_PAGE: if no valid page was found
|
|
* - Flash error code: on write Flash error
|
|
*/
|
|
static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data)
|
|
{
|
|
HAL_StatusTypeDef flashstatus = HAL_OK;
|
|
uint16_t validpage = PAGE0;
|
|
uint32_t address = EEPROM_START_ADDRESS, pageendaddress = EEPROM_START_ADDRESS+PAGE_SIZE;
|
|
|
|
/* Get valid Page for write operation */
|
|
validpage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
|
|
|
|
/* Check if there is no valid page */
|
|
if (validpage == NO_VALID_PAGE)
|
|
{
|
|
return NO_VALID_PAGE;
|
|
}
|
|
|
|
/* Get the valid Page start address */
|
|
address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(validpage * PAGE_SIZE));
|
|
|
|
/* Get the valid Page end address */
|
|
pageendaddress = (uint32_t)((EEPROM_START_ADDRESS - 1) + (uint32_t)((validpage + 1) * PAGE_SIZE));
|
|
|
|
/* Check each active page address starting from begining */
|
|
while (address < pageendaddress)
|
|
{
|
|
/* Verify if address and address+2 contents are 0xFFFFFFFF */
|
|
if ((*(__IO uint32_t*)address) == 0xFFFFFFFF)
|
|
{
|
|
/* Set variable data */
|
|
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, address, Data);
|
|
/* If program operation was failed, a Flash error code is returned */
|
|
if (flashstatus != HAL_OK)
|
|
{
|
|
return flashstatus;
|
|
}
|
|
/* Set variable virtual address */
|
|
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, address + 2, VirtAddress);
|
|
/* Return program operation status */
|
|
return flashstatus;
|
|
}
|
|
else
|
|
{
|
|
/* Next address location */
|
|
address = address + 4;
|
|
}
|
|
}
|
|
|
|
/* Return PAGE_FULL in case the valid page is full */
|
|
return PAGE_FULL;
|
|
}
|
|
|
|
/**
|
|
* @brief Transfers last updated variables data from the full Page to
|
|
* an empty one.
|
|
* @param VirtAddress: 16 bit virtual address of the variable
|
|
* @param Data: 16 bit data to be written as variable value
|
|
* @retval Success or error status:
|
|
* - FLASH_COMPLETE: on success
|
|
* - PAGE_FULL: if valid page is full
|
|
* - NO_VALID_PAGE: if no valid page was found
|
|
* - Flash error code: on write Flash error
|
|
*/
|
|
static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data)
|
|
{
|
|
HAL_StatusTypeDef flashstatus = HAL_OK;
|
|
uint32_t newpageaddress = EEPROM_START_ADDRESS;
|
|
uint32_t oldpageid = 0;
|
|
uint16_t validpage = PAGE0, varidx = 0;
|
|
uint16_t eepromstatus = 0, readstatus = 0;
|
|
uint32_t page_error = 0;
|
|
FLASH_EraseInitTypeDef s_eraseinit;
|
|
|
|
/* Get active Page for read operation */
|
|
validpage = EE_FindValidPage(READ_FROM_VALID_PAGE);
|
|
|
|
if (validpage == PAGE1) /* Page1 valid */
|
|
{
|
|
/* New page address where variable will be moved to */
|
|
newpageaddress = PAGE0_BASE_ADDRESS;
|
|
|
|
/* Old page ID where variable will be taken from */
|
|
oldpageid = PAGE1_ID;
|
|
}
|
|
else if (validpage == PAGE0) /* Page0 valid */
|
|
{
|
|
/* New page address where variable will be moved to */
|
|
newpageaddress = PAGE1_BASE_ADDRESS;
|
|
|
|
/* Old page ID where variable will be taken from */
|
|
oldpageid = PAGE0_ID;
|
|
}
|
|
else
|
|
{
|
|
return NO_VALID_PAGE; /* No valid Page */
|
|
}
|
|
|
|
/* Set the new Page status to RECEIVE_DATA status */
|
|
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, newpageaddress, RECEIVE_DATA);
|
|
/* If program operation was failed, a Flash error code is returned */
|
|
if (flashstatus != HAL_OK)
|
|
{
|
|
return flashstatus;
|
|
}
|
|
|
|
/* Write the variable passed as parameter in the new active page */
|
|
eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
|
/* If program operation was failed, a Flash error code is returned */
|
|
if (eepromstatus != HAL_OK)
|
|
{
|
|
return eepromstatus;
|
|
}
|
|
|
|
/* Transfer process: transfer variables from old to the new active page */
|
|
for (varidx = 0; varidx < NB_OF_VAR; varidx++)
|
|
{
|
|
if (VirtAddVarTab[varidx] != VirtAddress) /* Check each variable except the one passed as parameter */
|
|
{
|
|
/* Read the other last variable updates */
|
|
readstatus = EE_ReadVariable(VirtAddVarTab[varidx], &DataVar);
|
|
/* In case variable corresponding to the virtual address was found */
|
|
if (readstatus != 0x1)
|
|
{
|
|
/* Transfer the variable to the new active page */
|
|
eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[varidx], DataVar);
|
|
/* If program operation was failed, a Flash error code is returned */
|
|
if (eepromstatus != HAL_OK)
|
|
{
|
|
return eepromstatus;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
|
|
s_eraseinit.PageAddress = oldpageid;
|
|
s_eraseinit.NbPages = 1;
|
|
|
|
/* Erase the old Page: Set old Page status to ERASED status */
|
|
flashstatus = HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
|
|
/* If erase operation was failed, a Flash error code is returned */
|
|
if (flashstatus != HAL_OK)
|
|
{
|
|
return flashstatus;
|
|
}
|
|
|
|
/* Set new Page status to VALID_PAGE status */
|
|
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, newpageaddress, VALID_PAGE);
|
|
/* If program operation was failed, a Flash error code is returned */
|
|
if (flashstatus != HAL_OK)
|
|
{
|
|
return flashstatus;
|
|
}
|
|
|
|
|
|
|
|
/* Return last operation flash status */
|
|
return flashstatus;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|