EEPROM driver

Low-level EEPROM interface. More...

Detailed Description

Low-level EEPROM interface.

Files
file	eeprom.h
	Low-level eeprom driver interface.

Macros
#define	EEPROM_CLEAR_BYTE   0x00
	Default value of the EEPROM clear byte.

Functions
uint8_t	eeprom_read_byte (uint32_t pos)
	Read a byte at the given position in eeprom. More...
size_t	eeprom_read (uint32_t pos, void *data, size_t len)
	Read len bytes from the given position. More...
void	eeprom_write_byte (uint32_t pos, uint8_t data)
	Write a byte at the given position. More...
size_t	eeprom_write (uint32_t pos, const void *data, size_t len)
	Write len bytes at the given position. More...
size_t	eeprom_set (uint32_t pos, uint8_t val, size_t len)
	Set len bytes from the given position pos with value val. More...
size_t	eeprom_clear (uint32_t pos, size_t len)
	Clear len bytes from the given position pos. More...
size_t	eeprom_erase (void)
	Erase the whole EEPROM content. More...

Function Documentation

eeprom_clear()

size_t eeprom_clear	(	uint32_t	pos,
		size_t	len
	)

Clear len bytes from the given position pos.

Clearing a byte in EEPROM simply consists in setting it to 0

Parameters

[in]	pos	start position in eeprom
[in]	len	the number of bytes to clear

Returns

the number of bytes cleared

eeprom_erase()

size_t eeprom_erase

(

void

)

Erase the whole EEPROM content.

Returns

the EEPROM_SIZE

eeprom_read()

size_t eeprom_read	(	uint32_t	pos,
		void *	data,
		size_t	len
	)

Read len bytes from the given position.

This function must be implemented by each CPU that provides an internal EEPROM.

Parameters

[in]	pos	start position in eeprom
[out]	data	output memory location to write to
[in]	len	the number of bytes to read

Returns

the number of bytes read

eeprom_read_byte()

uint8_t eeprom_read_byte

(

uint32_t

pos

)

Read a byte at the given position in eeprom.

Parameters

[in]

pos

position to read

Returns

the byte read

eeprom_set()

size_t eeprom_set	(	uint32_t	pos,
		uint8_t	val,
		size_t	len
	)

Set len bytes from the given position pos with value val.

Parameters

[in]	pos	start position in eeprom
[in]	val	the value to set
[in]	len	the number of bytes to set

Returns

the number of bytes set

eeprom_write()

size_t eeprom_write	(	uint32_t	pos,
		const void *	data,
		size_t	len
	)

Write len bytes at the given position.

This function must be implemented by each CPU that provides an internal EEPROM.

Parameters

[in]	pos	start position in eeprom
[in]	data	input memory location to read into
[in]	len	the number of bytes to read

Returns

the number of bytes written

eeprom_write_byte()

void eeprom_write_byte	(	uint32_t	pos,
		uint8_t	data
	)

Write a byte at the given position.

Parameters

[in]	pos	position to write
[in]	data	byte address to write to