imbis
/
AKM_Demo_Board
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '682cdde8c2'
${ noResults }
AKM_Demo_Board/Project/Application/eeprom/eeprom.c

827 lines
28 KiB
Raw Normal View History Unescape

cli 기능 추가
3 months ago
/**
******************************************************************************
* @file EEPROM/EEPROM_Emulation/src/eeprom.c
* @author MCD Application Team
* @brief This file provides all the EEPROM emulation firmware functions.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V.
* All rights reserved.</center></h2>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted, provided that the following conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of other
* contributors to this software may be used to endorse or promote products
* derived from this software without specific written permission.
* 4. This software, including modifications and/or derivative works of this
* software, must execute solely and exclusively on microcontroller or
* microprocessor devices manufactured by or for STMicroelectronics.
* 5. Redistribution and use of this software other than as permitted under
* this license is void and will automatically terminate your rights under
* this license.
*
* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/** @addtogroup EEPROM_Emulation
* @{
*/
/* Includes ------------------------------------------------------------------*/
#include "board_config.h"
#include "cammsys_flash.h"
#include "eeprom.h"
#include "eeprom_address.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Global variable used to store variable value in read sequence */
uint16_t DataVar = 0;
/* Virtual address defined by the user: 0xFFFF value is prohibited */
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
static uint32_t EE_Format(void);
static uint32_t EE_FindValidPage(uint8_t Operation);
static uint32_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
static uint32_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data);
static uint32_t EE_Transfer_Write_Variable(uint32_t writeaddress, uint16_t VirtAddress, uint16_t Data);
static uint32_t EE_VerifyPageFullyErased(uint32_t Address);
static uint32_t EE_WriteData(uint32_t address, uint32_t data);
uint32_t EE_EraseAll()
{
if (flash_erase_page(PAGE0_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
if (flash_erase_page(PAGE1_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
return EE_OK;
}
/**
* @brief Restore the pages to a known good state in case of page's status
* corruption after a power loss.
* @param None.
* @retval - Flash error code: on write Flash error
* - FLASH_COMPLETE: on success
*/
uint32_t EE_Init(void)
{
uint32_t PageStatus0 = 6, PageStatus1 = 6;
uint16_t VarIdx = 0;
uint32_t EepromStatus = 0, ReadStatus = 0;
int16_t x = -1;
uint32_t FlashStatus;
uint32_t SectorError = 0;
Flash_Initialization();
/* Get Page0 status */
PageStatus0 = (*(__IO uint32_t*)PAGE0_BASE_ADDRESS);
/* Get Page1 status */
PageStatus1 = (*(__IO uint32_t*)PAGE1_BASE_ADDRESS);
/* Check for invalid header states and repair if necessary */
switch (PageStatus0)
{
case ERASED:
if (PageStatus1 == VALID_PAGE) /* Page0 erased, Page1 valid */
{
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
if (flash_erase_page(PAGE0_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
}
else if (PageStatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
{
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
if (flash_erase_page(PAGE0_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
/* Mark Page1 as valid */
FlashStatus = EE_WriteData(PAGE1_BASE_ADDRESS, VALID_PAGE);
if (FlashStatus != EE_OK)
return FlashStatus;
}
else /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
{
/* Erase both Page0 and Page1 and set Page0 as valid page */
FlashStatus = EE_Format();
if (FlashStatus != EE_OK)
return FlashStatus;
}
break;
case RECEIVE_DATA:
if (PageStatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
{
/* Transfer data from Page1 to Page0 */
EE_Item eeItem;
for (VarIdx = 0; VarIdx < EE_INDEX_MAX; VarIdx++)
{
eeItem.buf = *(__IO uint32_t*)(PAGE0_BASE_ADDRESS+4);
if (eeItem.index == VarIdx)
{
x = VarIdx;
}
if (VarIdx != x)
{
/* Read the last variables' updates */
ReadStatus = EE_ReadVariable(VarIdx, &DataVar);
/* In case variable corresponding to the virtual address was found */
if (ReadStatus != 0x1)
{
/* Transfer the variable to the Page0 */
EepromStatus = EE_VerifyPageFullWriteVariable(VarIdx, DataVar);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != EE_OK)
{
return EepromStatus;
}
}
}
}
/* Mark Page0 as valid */
FlashStatus = EE_WriteData(PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
if (flash_erase_page(PAGE1_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
}
else if (PageStatus1 == ERASED) /* Page0 receive, Page1 erased */
{
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
if (flash_erase_page(PAGE1_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
/* Mark Page0 as valid */
FlashStatus = EE_WriteData(PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
}
else /* Invalid state -> format eeprom */
{
/* Erase both Page0 and Page1 and set Page0 as valid page */
FlashStatus = EE_Format();
/* If erase/program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
{
return FlashStatus;
}
}
break;
case VALID_PAGE:
if (PageStatus1 == VALID_PAGE) /* Invalid state -> format eeprom */
{
/* Erase both Page0 and Page1 and set Page0 as valid page */
FlashStatus = EE_Format();
/* If erase/program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
{
return FlashStatus;
}
}
else if (PageStatus1 == ERASED) /* Page0 valid, Page1 erased */
{
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
if (flash_erase_page(PAGE1_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
}
else /* Page0 valid, Page1 receive */
{
/* Transfer data from Page0 to Page1 */
EE_Item eeItem;
for (VarIdx = 0; VarIdx < EE_INDEX_MAX; VarIdx++)
{
eeItem.buf = *(__IO uint32_t*)(PAGE1_BASE_ADDRESS + 4);
if (eeItem.index == VarIdx)
{
x = VarIdx;
}
if (VarIdx != x)
{
/* Read the last variables' updates */
ReadStatus = EE_ReadVariable(VarIdx, &DataVar);
/* In case variable corresponding to the virtual address was found */
if (ReadStatus != 0x1)
{
/* Transfer the variable to the Page1 */
EepromStatus = EE_VerifyPageFullWriteVariable(VarIdx, DataVar);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != EE_OK)
{
return EepromStatus;
}
}
}
}
/* Mark Page1 as valid */
FlashStatus = EE_WriteData(PAGE1_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
if (flash_erase_page(PAGE0_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
}
break;
default: /* Any other state -> format eeprom */
/* Erase both Page0 and Page1 and set Page0 as valid page */
FlashStatus = EE_Format();
/* If erase/program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
{
return FlashStatus;
}
break;
}
return EE_OK;
}
/**
* @brief Verify if specified page is fully erased.
* @param Address: page address
* This parameter can be one of the following values:
* @arg PAGE0_BASE_ADDRESS: Page0 base address
* @arg PAGE1_BASE_ADDRESS: Page1 base address
* @retval page fully erased status:
* - 0: if Page not erased
* - 1: if Page erased
*/
uint32_t EE_VerifyPageFullyErased(uint32_t Address)
{
uint32_t ReadStatus = 1;
uint32_t AddressValue = 0x5555;
uint32_t endAddress = 0;
EE_Item eeItem;
if (Address == PAGE0_BASE_ADDRESS)
endAddress = PAGE0_END_ADDRESS;
else if (Address == PAGE1_BASE_ADDRESS)
endAddress = PAGE1_END_ADDRESS;
/* Check each active page address starting from end */
while (Address < endAddress)
{
/* Get the current location content to be compared with virtual address */
AddressValue = (*(__IO uint32_t*)Address);
/* Compare the read address with the virtual address */
if (AddressValue != ERASED)
{
/* In case variable value is read, reset ReadStatus flag */
ReadStatus = 0;
break;
}
/* Next address location */
Address = Address + 4;
}
/* Return ReadStatus value: (0: Page not erased, 1: Sector erased) */
return ReadStatus;
}
/**
* @brief Returns the last stored variable data, if found, which correspond to
* the passed virtual address
* @param VirtAddress: Variable virtual address
* @param Data: Global variable contains the read variable value
* @retval Success or error status:
* - 0: if variable was found
* - 1: if the variable was not found
* - NO_VALID_PAGE: if no valid page was found.
*/
uint32_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data)
{
uint32_t ValidPage = PAGE0;
uint32_t AddressValue = 0x5555, ReadStatus = 1;
uint32_t Address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
EE_Item eeItem;
/* Get active Page for read operation */
ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
/* Check if there is no valid page */
if (ValidPage == NO_VALID_PAGE)
{
return NO_VALID_PAGE;
}
/* Get the valid Page start Address */
PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
/* Get the valid Page end Address */
Address = (uint32_t)((EEPROM_START_ADDRESS - 4) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
/* Check each active page address starting from end */
while (Address >= (PageStartAddress + 4))
{
/* Get the current location content to be compared with virtual address */
eeItem.buf = (*(__IO uint32_t*)Address);
/* Compare the read address with the virtual address */
if (eeItem.index == VirtAddress)
{
/* Get content of Address-2 which is variable value */
*Data = eeItem.data;
/* In case variable value is read, reset ReadStatus flag */
ReadStatus = 0;
break;
}
else
{
/* Next address location */
Address = Address - 4;
}
}
/* Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) */
return ReadStatus;
}
/**
* @brief Writes/upadtes variable data in EEPROM.
* @param VirtAddress: Variable virtual address
* @param Data: 16 bit data to be written
* @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
*/
uint32_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data)
{
uint32_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 uint32_t EE_Format(void)
{
uint32_t FlashStatus = EE_OK;
uint32_t SectorError = 0;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
if (flash_erase_page(PAGE0_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
/* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
FlashStatus = EE_WriteData(PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
if (flash_erase_page(PAGE1_BASE_ADDRESS) != E_NO_ERROR)
return EE_ERROR;
}
return EE_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 uint32_t EE_FindValidPage(uint8_t Operation)
{
uint32_t PageStatus0 = 6, PageStatus1 = 6;
/* Get Page0 actual status */
PageStatus0 = (*(__IO uint32_t*)PAGE0_BASE_ADDRESS);
/* Get Page1 actual status */
PageStatus1 = (*(__IO uint32_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 uint32_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data)
{
uint32_t FlashStatus = EE_OK;
uint32_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) + 4);
/* Get the valid Page end Address */
PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 4) + (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) == ERASED)
{
EE_Item eeItem;
eeItem.index = VirtAddress;
eeItem.data = Data;
/* Set variable data */
FlashStatus = EE_WriteData(Address, eeItem.buf);
return FlashStatus;
}
else
{
/* Next address location */
Address = Address + 4;
}
}
/* Return PAGE_FULL in case the valid page is full */
return PAGE_FULL;
}
static uint32_t EE_Transfer_Write_Variable(uint32_t writeaddress, uint16_t VirtAddress, uint16_t Data)
{
uint32_t FlashStatus = EE_OK;
uint32_t ValidPage = PAGE0;
uint32_t Address = writeaddress, PageEndAddress = writeaddress+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) == ERASED)
{
EE_Item eeItem;
eeItem.index = VirtAddress;
eeItem.data = Data;
/* Set variable data */
FlashStatus = EE_WriteData(Address, eeItem.buf);
return FlashStatus;
}
else
{
/* Next address location */
Address = Address + 4;
}
}
/* Return PAGE_FULL in case the valid page is full */
return PAGE_FULL;
}
/**
* @brief Returns the last stored variable data, if found, which correspond to
* the passed virtual address
* @param VirtAddress: Variable virtual address
* @param Data: Global variable contains the read variable value
* @retval Success or error status:
* - 0: if variable was found
* - 1: if the variable was not found
* - NO_VALID_PAGE: if no valid page was found.
*/
static uint32_t EE_Transfer_ReadVariable(uint32_t OldAddress, uint16_t VirtAddress, uint16_t* Data)
{
uint32_t ValidPage = PAGE0;
uint32_t AddressValue = 0x5555, ReadStatus = 1;
uint32_t Address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
EE_Item eeItem;
/* Get the valid Page start Address */
PageStartAddress = OldAddress;
/* Get the valid Page end Address */
Address = (uint32_t)((PageStartAddress - 4) + (uint32_t)PAGE_SIZE);
/* Check each active page address starting from end */
while (Address >= (PageStartAddress + 4))
{
/* Get the current location content to be compared with virtual address */
eeItem.buf = (*(__IO uint32_t*)Address);
/* Compare the read address with the virtual address */
if (eeItem.index == VirtAddress)
{
/* Get content of Address-2 which is variable value */
*Data = eeItem.data;
/* In case variable value is read, reset ReadStatus flag */
ReadStatus = 0;
break;
}
else
{
/* Next address location */
Address = Address - 4;
}
}
/* Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) */
return ReadStatus;
}
/**
* @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 uint32_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data)
{
uint32_t FlashStatus = EE_OK;
uint32_t NewPageAddress = EEPROM_START_ADDRESS;
uint32_t OldPageAddress = EEPROM_START_ADDRESS;
uint16_t OldPageId=0;
uint16_t ValidPage = PAGE0, VarIdx = 0;
uint32_t EepromStatus = 0, ReadStatus = 0;
uint32_t SectorError = 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;
OldPageAddress = PAGE1_BASE_ADDRESS;
}
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;
OldPageAddress = PAGE0_BASE_ADDRESS;
}
else
{
return NO_VALID_PAGE; /* No valid Page */
}
/* Set the new Page status to RECEIVE_DATA status */
FlashStatus = EE_WriteData(NewPageAddress, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
/* Write the variable passed as parameter in the new active page */
EepromStatus = EE_Transfer_Write_Variable(NewPageAddress, VirtAddress, Data);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != EE_OK)
{
return EepromStatus;
}
/* Transfer process: transfer variables from old to the new active page */
for (VarIdx = 0; VarIdx < EE_INDEX_MAX; VarIdx++)
{
if (VarIdx != VirtAddress) /* Check each variable except the one passed as parameter */
{
/* Read the other last variable updates */
ReadStatus = EE_Transfer_ReadVariable(OldPageAddress, 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_Transfer_Write_Variable(NewPageAddress, VarIdx, DataVar);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != EE_OK)
{
return EepromStatus;
}
}
}
}
/* Erase the old Page: Set old Page status to ERASED status */
if (flash_erase_page(OldPageAddress) != E_NO_ERROR)
return EE_ERROR;
/* Return last operation flash status */
return FlashStatus;
#if 0
/* Set the new Page status to RECEIVE_DATA status */
FlashStatus = EE_WriteData(NewPageAddress, RECEIVE_DATA);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_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 != EE_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 != EE_OK)
{
return EepromStatus;
}
}
}
}
/* Erase the old Page: Set old Page status to ERASED status */
if (flash_erase_page(OldPageAddress) != E_NO_ERROR)
return EE_ERROR;
/* Set new Page status to VALID_PAGE status */
FlashStatus = EE_WriteData(NewPageAddress, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != EE_OK)
return FlashStatus;
/* Return last operation flash status */
return FlashStatus;
#endif
}
/**
* @}
*/
static uint32_t EE_WriteData(uint32_t address, uint32_t data)
{
return (Flash_Write(address, (uint8_t *)&data, 4) ? EE_OK : EE_ERROR);
}
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/