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@@ -1,822 +0,0 @@
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-/**
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- ******************************************************************************
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- * @file EEPROM/EEPROM_Emulation/src/eeprom.c
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- * @author MCD Application Team
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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 � 2017 STMicroelectronics International N.V.
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- * All rights reserved.</center></h2>
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- *
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- * Redistribution and use in source and binary forms, with or without
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- * modification, are permitted, provided that the following conditions are met:
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- *
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- * 1. Redistribution 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 other
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- * contributors to this software may be used to endorse or promote products
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- * derived from this software without specific written permission.
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- * 4. This software, including modifications and/or derivative works of this
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- * software, must execute solely and exclusively on microcontroller or
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- * microprocessor devices manufactured by or for STMicroelectronics.
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- * 5. Redistribution and use of this software other than as permitted under
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- * this license is void and will automatically terminate your rights under
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- * this license.
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- *
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- * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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- * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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- * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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- * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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- * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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- * 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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-
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-/* Includes ------------------------------------------------------------------*/
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-#include "eeprom_f4.h"
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-
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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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-
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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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-
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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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-
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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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-/**
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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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-
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- FLASH_UnlockF4();
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-
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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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-
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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 = FLASH_EraseSectorF4(PAGE0_ID);
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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 = FLASH_EraseSectorF4(PAGE1_ID);
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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 = FLASH_ProgramHalfWordF4(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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-
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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 = FLASH_ProgramHalfWordF4(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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- /* Erase Page1 */
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- if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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- {
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- FlashStatus = FLASH_EraseSectorF4(PAGE1_ID);
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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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- /* Erase Page1 */
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- if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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- {
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- FlashStatus = FLASH_EraseSectorF4(PAGE1_ID);
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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 = FLASH_ProgramHalfWordF4(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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-
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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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- /* Erase Page1 */
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- if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
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- {
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- FlashStatus = FLASH_EraseSectorF4(PAGE1_ID);
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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 = FLASH_ProgramHalfWordF4(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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- /* Erase Page0 */
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- if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
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- {
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- FlashStatus = FLASH_EraseSectorF4(PAGE0_ID);
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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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-
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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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-
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- return HAL_OK;
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-}
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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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-
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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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-
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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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-
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- /* In case variable value is read, reset ReadStatus flag */
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- ReadStatus = 0;
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-
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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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-
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- /* Return ReadStatus value: (0: Page not erased, 1: Sector erased) */
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- return ReadStatus;
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-}
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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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-
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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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-
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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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-
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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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-
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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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-
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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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-
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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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-
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- /* In case variable value is read, reset ReadStatus flag */
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- ReadStatus = 0;
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-
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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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-
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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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-/**
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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)
|
|
|
-{
|
|
|
- uint16_t Status = 0;
|
|
|
-
|
|
|
- /* Write the variable virtual address and value in the EEPROM */
|
|
|
- Status = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
|
|
-
|
|
|
- /* In case the EEPROM active page is full */
|
|
|
- if (Status == PAGE_FULL)
|
|
|
- {
|
|
|
- /* Perform Page transfer */
|
|
|
- Status = EE_PageTransfer(VirtAddress, Data);
|
|
|
- }
|
|
|
-
|
|
|
- /* Return last operation status */
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * @brief Erases PAGE and PAGE1 and writes VALID_PAGE header to PAGE
|
|
|
- * @param None
|
|
|
- * @retval Status of the last operation (Flash write or erase) done during
|
|
|
- * EEPROM formating
|
|
|
- */
|
|
|
-static HAL_StatusTypeDef EE_Format(void)
|
|
|
-{
|
|
|
- HAL_StatusTypeDef FlashStatus = HAL_OK;
|
|
|
-
|
|
|
- /* Erase Page0 */
|
|
|
- if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
|
|
|
- {
|
|
|
- FlashStatus = FLASH_EraseSectorF4(PAGE0_ID);
|
|
|
- /* If erase operation was failed, a Flash error code is returned */
|
|
|
- if (FlashStatus != HAL_OK)
|
|
|
- {
|
|
|
- return FlashStatus;
|
|
|
- }
|
|
|
- }
|
|
|
- /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
|
|
|
- FlashStatus = FLASH_ProgramHalfWordF4(PAGE0_BASE_ADDRESS, VALID_PAGE);
|
|
|
- /* If program operation was failed, a Flash error code is returned */
|
|
|
- if (FlashStatus != HAL_OK)
|
|
|
- {
|
|
|
- return FlashStatus;
|
|
|
- }
|
|
|
-
|
|
|
- /* Erase Page1 */
|
|
|
- if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
|
|
|
- {
|
|
|
- FlashStatus = FLASH_EraseSectorF4(PAGE1_ID);
|
|
|
- /* If erase operation was failed, a Flash error code is returned */
|
|
|
- if (FlashStatus != HAL_OK)
|
|
|
- {
|
|
|
- return FlashStatus;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return HAL_OK;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * @brief Find valid Page for write or read operation
|
|
|
- * @param Operation: operation to achieve on the valid page.
|
|
|
- * This parameter can be one of the following values:
|
|
|
- * @arg READ_FROM_VALID_PAGE: read operation from valid page
|
|
|
- * @arg WRITE_IN_VALID_PAGE: write operation from valid page
|
|
|
- * @retval Valid page number (PAGE or PAGE1) or NO_VALID_PAGE in case
|
|
|
- * of no valid page was found
|
|
|
- */
|
|
|
-static uint16_t EE_FindValidPage(uint8_t Operation)
|
|
|
-{
|
|
|
- uint16_t PageStatus0 = 6, PageStatus1 = 6;
|
|
|
-
|
|
|
- /* Get Page0 actual status */
|
|
|
- PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
|
|
|
-
|
|
|
- /* Get Page1 actual status */
|
|
|
- PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
|
|
|
-
|
|
|
- /* Write or read operation */
|
|
|
- switch (Operation)
|
|
|
- {
|
|
|
- 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 = FLASH_ProgramHalfWordF4(Address, Data);
|
|
|
- /* If program operation was failed, a Flash error code is returned */
|
|
|
- if (FlashStatus != HAL_OK)
|
|
|
- {
|
|
|
- return FlashStatus;
|
|
|
- }
|
|
|
- /* Set variable virtual address */
|
|
|
- FlashStatus = FLASH_ProgramHalfWordF4(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;
|
|
|
- uint16_t OldPageId=0;
|
|
|
- uint16_t ValidPage = PAGE0, VarIdx = 0;
|
|
|
- uint16_t EepromStatus = 0, ReadStatus = 0;
|
|
|
-
|
|
|
- /* 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 = FLASH_ProgramHalfWordF4(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;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* Erase the old Page: Set old Page status to ERASED status */
|
|
|
- FlashStatus = FLASH_EraseSectorF4(OldPageId);
|
|
|
- /* 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 = FLASH_ProgramHalfWordF4(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;
|
|
|
-}
|
|
|
-
|
|
|
-/* flash operation */
|
|
|
-
|
|
|
-#define EraseTimeout ((uint32_t)0x00000FFF)
|
|
|
-#define ProgramTimeout ((uint32_t)0x0000001F)
|
|
|
-
|
|
|
-#define FLASH_PSIZE_BYTE 0
|
|
|
-#define FLASH_PSIZE_HFWORD FLASH_CR_PSIZE_0
|
|
|
-#define FLASH_PSIZE_WORD FLASH_CR_PSIZE_1
|
|
|
-#define FLASH_CR_SNB_Pos 3
|
|
|
-#define FLASH_KEY1_F4 0x45670123
|
|
|
-#define FLASH_KEY2_F4 0xCDEF89AB
|
|
|
-
|
|
|
-#define ASSERT(exp) (void)((0))
|
|
|
-
|
|
|
-static void Flash_Delay(void)
|
|
|
-{
|
|
|
- __IO uint32_t i = 0;
|
|
|
- for(i = 0xFF; i != 0; i--) { }
|
|
|
-}
|
|
|
-
|
|
|
-static HAL_StatusTypeDef FLASH_GetStatus(void)
|
|
|
-{
|
|
|
- if ((FLASH->SR & FLASH_SR_BSY) == FLASH_SR_BSY)
|
|
|
- return HAL_BUSY;
|
|
|
-
|
|
|
- if ((FLASH->SR & (FLASH_SR_PGSERR|FLASH_SR_PGPERR|FLASH_SR_PGAERR)) != 0)
|
|
|
- return HAL_ERROR;
|
|
|
-
|
|
|
- if ((FLASH->SR & FLASH_SR_WRPERR) != 0 )
|
|
|
- return HAL_ERROR;
|
|
|
-
|
|
|
- if ((FLASH->SR & FLASH_SR_SOP) != 0 )
|
|
|
- return HAL_ERROR;
|
|
|
-
|
|
|
- return HAL_OK;
|
|
|
-}
|
|
|
-
|
|
|
-static HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t timeout)
|
|
|
-{
|
|
|
- /* Check for the Flash Status */
|
|
|
- HAL_StatusTypeDef status = FLASH_GetStatus();
|
|
|
- /* Wait for a Flash operation to complete or a TIMEOUT to occur */
|
|
|
- while ((status == HAL_BUSY) && (timeout != 0x00))
|
|
|
- {
|
|
|
- Flash_Delay();
|
|
|
- status = FLASH_GetStatus();
|
|
|
- timeout--;
|
|
|
- }
|
|
|
- if (timeout == 0)
|
|
|
- status = HAL_TIMEOUT;
|
|
|
-
|
|
|
- return status;
|
|
|
-}
|
|
|
-HAL_StatusTypeDef FLASH_UnlockF4(void)
|
|
|
-{
|
|
|
- FLASH->KEYR = FLASH_KEY1_F4;
|
|
|
- FLASH->KEYR = FLASH_KEY2_F4;
|
|
|
- return HAL_OK;
|
|
|
-}
|
|
|
-
|
|
|
-HAL_StatusTypeDef FLASH_EraseSectorF4(uint32_t sector)
|
|
|
-{
|
|
|
- HAL_StatusTypeDef status = HAL_OK;
|
|
|
- /* Wait for last operation to be completed */
|
|
|
- status = FLASH_WaitForLastOperation(EraseTimeout);
|
|
|
-
|
|
|
- if(status == HAL_OK) {
|
|
|
- /* if the previous operation is completed, proceed to erase the page */
|
|
|
- CLEAR_BIT(FLASH->CR, FLASH_CR_PSIZE);
|
|
|
- FLASH->CR |= FLASH_PSIZE_WORD;
|
|
|
- CLEAR_BIT(FLASH->CR, FLASH_CR_SNB);
|
|
|
- FLASH->CR |= FLASH_CR_SER | (sector << FLASH_CR_SNB_Pos);
|
|
|
- FLASH->CR |= FLASH_CR_STRT;
|
|
|
-
|
|
|
- /* Wait for last operation to be completed */
|
|
|
- status = FLASH_WaitForLastOperation(EraseTimeout);
|
|
|
- if(status != HAL_TIMEOUT)
|
|
|
- {
|
|
|
- /* if the erase operation is completed, disable the PER Bit */
|
|
|
- FLASH->CR &= ~FLASH_CR_SNB;
|
|
|
- FLASH->CR &= ~FLASH_CR_SER;
|
|
|
- }
|
|
|
-
|
|
|
- FLASH->SR = (FLASH_SR_EOP | FLASH_SR_SOP | FLASH_SR_WRPERR);
|
|
|
- }
|
|
|
- /* Return the Erase Status */
|
|
|
- return status;
|
|
|
-}
|
|
|
-
|
|
|
-HAL_StatusTypeDef FLASH_ProgramHalfWordF4(uint32_t address, uint16_t data)
|
|
|
-{
|
|
|
- HAL_StatusTypeDef status = HAL_ERROR;
|
|
|
-
|
|
|
- if (IS_FLASH_ADDRESS(address))
|
|
|
- {
|
|
|
- /* Wait for last operation to be completed */
|
|
|
- status = FLASH_WaitForLastOperation(ProgramTimeout);
|
|
|
- if(status == HAL_OK) {
|
|
|
- // set size to byte
|
|
|
- FLASH->CR &= ~FLASH_CR_PSIZE;
|
|
|
- FLASH->CR |= FLASH_PSIZE_HFWORD;
|
|
|
- FLASH->CR |= FLASH_CR_PG;
|
|
|
-
|
|
|
- *(__IO uint16_t*)address = data;
|
|
|
- /* Wait for last operation to be completed */
|
|
|
- status = FLASH_WaitForLastOperation(ProgramTimeout);
|
|
|
- if(status != HAL_TIMEOUT)
|
|
|
- {
|
|
|
- /* if the program operation is completed, disable the PG Bit */
|
|
|
- FLASH->CR &= ~FLASH_CR_PG;
|
|
|
- }
|
|
|
- FLASH->SR = (FLASH_SR_EOP | FLASH_SR_SOP | FLASH_SR_PGSERR | FLASH_SR_PGPERR | FLASH_SR_PGAERR | FLASH_SR_WRPERR);
|
|
|
- }
|
|
|
- }
|
|
|
- return status;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * @}
|
|
|
- */
|
|
|
-
|
|
|
-/******************* (C) COPYRIGHT 2017 STMicroelectronics *****END OF FILE****/
|
skullY