m24512.h File Reference

Header file for M24512 EEPROM driver. More...

#include <stdint.h>
#include <stdbool.h>
#include "no_os_i2c.h"
#include "no_os_gpio.h"
#include "no_os_error.h"
#include "no_os_eeprom.h"

Include dependency graph for m24512.h:

Classes
struct	m24512_init_param
	M24512 initialization parameters. More...
struct	m24512_dev
	M24512 device descriptor. More...

Macros
#define	M24512_MEMORY_SIZE   65536U
#define	M24512_PAGE_SIZE   128U
#define	M24512_NUM_PAGES   512U
#define	M24512_MAX_ADDRESS   (M24512_MEMORY_SIZE - 1)
#define	M24512_WRITE_CYCLE_TIME   5U
#define	M24512_BYTE_WRITE_TIME   5U
#define	M24512_PAGE_WRITE_TIME   5U
#define	M24512_ADDR_HIGH_BYTE(addr)
#define	M24512_ADDR_LOW_BYTE(addr)

Functions
int32_t	m24512_init (struct no_os_eeprom_desc **desc, const struct no_os_eeprom_init_param *param)
	Initialize the M24512 EEPROM device.
int32_t	m24512_remove (struct no_os_eeprom_desc *desc)
	Free resources allocated by M24512 device.
int32_t	m24512_read_data (struct no_os_eeprom_desc *desc, uint32_t address, uint8_t *data, uint16_t len)
	Read multiple bytes from EEPROM.
int32_t	m24512_write_data (struct no_os_eeprom_desc *desc, uint32_t address, uint8_t *data, uint16_t len)
	Write multiple bytes to EEPROM (handles page boundaries)
bool	m24512_is_ready (struct m24512_dev *dev)
	Check if EEPROM is ready (write cycle completed)
int	m24512_wait_ready (struct m24512_dev *dev, uint32_t timeout_ms)
	Wait for write cycle completion.
int	m24512_get_info (struct m24512_dev *dev, uint32_t *memory_size, uint16_t *page_size, uint16_t *num_pages)
	Get device information.

Variables
const struct no_os_eeprom_platform_ops	eeprom_m24512_ops
	M24512 EEPROM specific ops structure.

Detailed Description

Header file for M24512 EEPROM driver.

Author

rober.nosp@m.t.bu.nosp@m.dai@a.nosp@m.nalo.nosp@m.g.com

Copyright 2025(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

M24512_ADDR_HIGH_BYTE

#define M24512_ADDR_HIGH_BYTE

(

addr

)

Value:

((uint8_t)((addr >> 8) & 0xFF))

M24512_ADDR_LOW_BYTE

#define M24512_ADDR_LOW_BYTE

(

addr

)

Value:

((uint8_t)(addr & 0xFF))

M24512_BYTE_WRITE_TIME

#define M24512_BYTE_WRITE_TIME   5U

M24512_MAX_ADDRESS

#define M24512_MAX_ADDRESS   (M24512_MEMORY_SIZE - 1)

M24512_MEMORY_SIZE

#define M24512_MEMORY_SIZE   65536U

M24512_NUM_PAGES

#define M24512_NUM_PAGES   512U

M24512_PAGE_SIZE

#define M24512_PAGE_SIZE   128U

M24512_PAGE_WRITE_TIME

#define M24512_PAGE_WRITE_TIME   5U

M24512_WRITE_CYCLE_TIME

#define M24512_WRITE_CYCLE_TIME   5U

Function Documentation

m24512_get_info()

int m24512_get_info	(	struct m24512_dev *	dev,
		uint32_t *	memory_size,
		uint16_t *	page_size,
		uint16_t *	num_pages )

Get device information.

Parameters

dev	- Device descriptor
memory_size	- Pointer to store memory size
page_size	- Pointer to store page size
num_pages	- Pointer to store number of pages

Returns

0 in case of success, negative error code otherwise

m24512_init()

int32_t m24512_init	(	struct no_os_eeprom_desc **	desc,
		const struct no_os_eeprom_init_param *	param )

Initialize the M24512 EEPROM device.

Parameters

desc	- Pointer to device descriptor
param	- Initialization parameters

Returns

0 in case of success, negative error code otherwise

m24512_is_ready()

bool m24512_is_ready

(

struct m24512_dev *

dev

)

Check if EEPROM is ready (write cycle completed)

Parameters

dev	- Device descriptor

Returns

true if ready, false if busy

m24512_read_data()

int32_t m24512_read_data	(	struct no_os_eeprom_desc *	desc,
		uint32_t	address,
		uint8_t *	data,
		uint16_t	len )

Read multiple bytes from EEPROM.

Parameters

desc	- Device descriptor
address	- Starting memory address
data	- Buffer to store read data
len	- Number of bytes to read

Returns

0 in case of success, negative error code otherwise

m24512_remove()

int32_t m24512_remove

(

struct no_os_eeprom_desc *

desc

)

Free resources allocated by M24512 device.

Parameters

desc	- Device descriptor

Returns

0 in case of success, negative error code otherwise

m24512_wait_ready()

int m24512_wait_ready	(	struct m24512_dev *	dev,
		uint32_t	timeout_ms )

Wait for write cycle completion.

Parameters

dev	- Device descriptor
timeout_ms	- Maximum timeout in milliseconds

Returns

0 if ready, negative error code on timeout

m24512_write_data()

int32_t m24512_write_data	(	struct no_os_eeprom_desc *	desc,
		uint32_t	address,
		uint8_t *	data,
		uint16_t	len )

Write multiple bytes to EEPROM (handles page boundaries)

Parameters

desc	- Device descriptor
address	- Starting memory address
data	- Data buffer to write
len	- Number of bytes to write

Returns

0 in case of success, negative error code otherwise

Variable Documentation

eeprom_m24512_ops

const struct no_os_eeprom_platform_ops eeprom_m24512_ops

extern

M24512 EEPROM specific ops structure.

M24512 EEPROM specific ops structure