EEPROM_Emulation

Functions
static uint16_t	EE_FindValidPage (uint8_t Operation)
	Find valid Page for write or read operation.
static uint16_t	EE_VerifyPageFullWriteVariable (uint16_t VirtAddress, uint16_t Data)
	Verify if active page is full and Writes variable in EEPROM.
static uint16_t	EE_PageTransfer (uint16_t VirtAddress, uint16_t Data)
	Transfers last updated variables data from the full Page to an empty one.
static uint16_t	EE_VerifyPageFullyErased (uint32_t Address)
	Verify if specified page is fully erased.
uint16_t	EE_Init (void)
	Restore the pages to a known good state in case of page's status corruption after a power loss.
uint16_t	EE_ReadVariable (uint16_t VirtAddress, uint16_t *Data)
	Returns the last stored variable data, if found, which correspond to the passed virtual address.
uint16_t	EE_WriteVariable (uint16_t VirtAddress, uint16_t Data)
	Writes/upadtes variable data in EEPROM.
HAL_StatusTypeDef	EE_Format (void)
	Erases PAGE and PAGE1 and writes VALID_PAGE header to PAGE.

Variables
uint16_t	DataVar = 0

Detailed Description

Function Documentation

EE_FindValidPage()

static uint16_t EE_FindValidPage ( uint8_t Operation )

static

Find valid Page for write or read operation.

Parameters

Operation

operation to achieve on the valid page. This parameter can be one of the following values: READ_FROM_VALID_PAGE: read operation from valid page WRITE_IN_VALID_PAGE: write operation from valid page

Return values

Valid

page number (PAGE or PAGE1) or NO_VALID_PAGE in case of no valid page was found

Definition at line 505 of file eeprom.c.

EE_Format()

HAL_StatusTypeDef EE_Format

(

void

)

Erases PAGE and PAGE1 and writes VALID_PAGE header to PAGE.

Parameters

None

Return values

Status

of the last operation (Flash write or erase) done during EEPROM formating

Definition at line 453 of file eeprom.c.

EE_Init()

uint16_t EE_Init

(

void

)

Restore the pages to a known good state in case of page's status corruption after a power loss.

Parameters

None.

Return values

-	Flash error code: on write Flash error FLASH_COMPLETE: on success

Definition at line 79 of file eeprom.c.

EE_PageTransfer()

static uint16_t EE_PageTransfer ( uint16_t VirtAddress, uint16_t Data )

static

Transfers last updated variables data from the full Page to an empty one.

Parameters

VirtAddress	16 bit virtual address of the variable
Data	16 bit data to be written as variable value

Return values

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

Definition at line 638 of file eeprom.c.

EE_ReadVariable()

uint16_t EE_ReadVariable	(	uint16_t	VirtAddress,
		uint16_t *	Data )

Returns the last stored variable data, if found, which correspond to the passed virtual address.

Parameters

VirtAddress	Variable virtual address
Data	Global variable contains the read variable value

Return values

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.

Definition at line 370 of file eeprom.c.

EE_VerifyPageFullWriteVariable()

static uint16_t EE_VerifyPageFullWriteVariable ( uint16_t VirtAddress, uint16_t Data )

static

Verify if active page is full and Writes variable in EEPROM.

Parameters

VirtAddress	16 bit virtual address of the variable
Data	16 bit data to be written as variable value

Return values

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

Definition at line 577 of file eeprom.c.

EE_VerifyPageFullyErased()

uint16_t EE_VerifyPageFullyErased ( uint32_t Address )

static

Verify if specified page is fully erased.

Parameters

Address

page address This parameter can be one of the following values: PAGE0_BASE_ADDRESS: Page0 base address PAGE1_BASE_ADDRESS: Page1 base address

Return values

page	fully erased status: 0: if Page not erased 1: if Page erased

Definition at line 332 of file eeprom.c.

EE_WriteVariable()

uint16_t EE_WriteVariable	(	uint16_t	VirtAddress,
		uint16_t	Data )

Writes/upadtes variable data in EEPROM.

Parameters

VirtAddress	Variable virtual address
Data	16 bit data to be written

Return values

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

Definition at line 429 of file eeprom.c.

Variable Documentation

DataVar

uint16_t DataVar = 0

Definition at line 59 of file eeprom.c.