/**
* @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
*/
uint16_t EE_Init(void)
{
uint16_t PageStatus0 = 6, PageStatus1 = 6;
uint16_t VarIdx = 0;
uint16_t EepromStatus = 0, ReadStatus = 0;
int16_t x = -1;
HAL_StatusTypeDef FlashStatus;
uint32_t SectorError = 0;
FLASH_EraseInitTypeDef pEraseInit;
/* Get Page0 status */
PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
/* Get Page1 status */
PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
pEraseInit.TypeErase = TYPEERASE_SECTORS;
pEraseInit.Sector = PAGE0_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* 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))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
}
else if (PageStatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
{
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
/* Mark Page1 as valid */
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_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 erase/program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
break;
case RECEIVE_DATA:
if (PageStatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
{
/* Transfer data from Page1 to Page0 */
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++)
{
if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
{
x = VarIdx;
}
if (VarIdx != x)
{
/* Read the last variables' 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 Page0 */
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != HAL_OK)
{
return EepromStatus;
}
}
}
}
/* Mark Page0 as valid */
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
pEraseInit.Sector = PAGE1_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
}
else if (PageStatus1 == ERASED) /* Page0 receive, Page1 erased */
{
pEraseInit.Sector = PAGE1_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
/* Mark Page0 as valid */
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_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 != HAL_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 != HAL_OK)
{
return FlashStatus;
}
}
else if (PageStatus1 == ERASED) /* Page0 valid, Page1 erased */
{
pEraseInit.Sector = PAGE1_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
}
else /* Page0 valid, Page1 receive */
{
/* Transfer data from Page0 to Page1 */
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++)
{
if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
{
x = VarIdx;
}
if (VarIdx != x)
{
/* Read the last variables' 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 Page1 */
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
/* If program operation was failed, a Flash error code is returned */
if (EepromStatus != HAL_OK)
{
return EepromStatus;
}
}
}
}
/* Mark Page1 as valid */
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
pEraseInit.Sector = PAGE0_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
}
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 != HAL_OK)
{
return FlashStatus;
}
break;
}
return HAL_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
*/
uint16_t EE_Init(void)
{
uint16_t pagestatus0 = 6, pagestatus1 = 6;
uint16_t varidx = 0;
uint16_t eepromstatus = 0, readstatus = 0;
int16_t x = -1;
HAL_StatusTypeDef flashstatus;
uint32_t page_error = 0;
FLASH_EraseInitTypeDef s_eraseinit;
/* Get Page0 status */
pagestatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
/* Get Page1 status */
pagestatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
/* Fill EraseInit structure*/
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE0_ID;
s_eraseinit.NbPages = 1;
/* 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))
{
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;
}
}
}
else if (pagestatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
{
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
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;
}
}
/* Mark Page1 as valid */
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_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 erase/program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_OK)
{
return flashstatus;
}
}
break;
case RECEIVE_DATA:
if (pagestatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
{
/* Transfer data from Page1 to Page0 */
for (varidx = 0; varidx < NB_OF_VAR; varidx++)
{
if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[varidx])
{
x = varidx;
}
if (varidx != x)
{
/* Read the last variables' 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 Page0 */
eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[varidx], DataVar);
/* If program operation was failed, a Flash error code is returned */
if (eepromstatus != HAL_OK)
{
return eepromstatus;
}
}
}
}
/* Mark Page0 as valid */
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_OK)
{
return flashstatus;
}
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE1_ID;
s_eraseinit.NbPages = 1;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
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;
}
}
}
else if (pagestatus1 == ERASED) /* Page0 receive, Page1 erased */
{
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE1_ID;
s_eraseinit.NbPages = 1;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
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;
}
}
/* Mark Page0 as valid */
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_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 != HAL_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 != HAL_OK)
{
return flashstatus;
}
}
else if (pagestatus1 == ERASED) /* Page0 valid, Page1 erased */
{
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE1_ID;
s_eraseinit.NbPages = 1;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
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;
}
}
}
else /* Page0 valid, Page1 receive */
{
/* Transfer data from Page0 to Page1 */
for (varidx = 0; varidx < NB_OF_VAR; varidx++)
{
if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[varidx])
{
x = varidx;
}
if (varidx != x)
{
/* Read the last variables' 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 Page1 */
eepromstatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[varidx], DataVar);
/* If program operation was failed, a Flash error code is returned */
if (eepromstatus != HAL_OK)
{
return eepromstatus;
}
}
}
}
/* Mark Page1 as valid */
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_OK)
{
return flashstatus;
}
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE0_ID;
s_eraseinit.NbPages = 1;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
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;
}
}
}
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 != HAL_OK)
{
return flashstatus;
}
break;
}
return HAL_OK;
}
/**
* @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;
uint32_t SectorError = 0;
FLASH_EraseInitTypeDef pEraseInit;
pEraseInit.TypeErase = FLASH_TYPEERASE_SECTORS;
pEraseInit.Sector = PAGE0_ID;
pEraseInit.NbSectors = 1;
pEraseInit.VoltageRange = VOLTAGE_RANGE;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* 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 = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
pEraseInit.Sector = PAGE1_ID;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
/* If erase operation was failed, a Flash error code is returned */
if (FlashStatus != HAL_OK)
{
return FlashStatus;
}
}
return HAL_OK;
}
/**
* @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;
uint32_t page_error = 0;
FLASH_EraseInitTypeDef s_eraseinit;
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.PageAddress = PAGE0_ID;
s_eraseinit.NbPages = 1;
/* Erase Page0 */
if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
{
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 Page0 as valid page: Write VALID_PAGE at Page0 base address */
flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
/* If program operation was failed, a Flash error code is returned */
if (flashstatus != HAL_OK)
{
return flashstatus;
}
s_eraseinit.PageAddress = PAGE1_ID;
/* Erase Page1 */
if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
{
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;
}
}
return HAL_OK;
}