79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
|
/*
|
||
|
|
* @Author: mypx
|
||
|
|
* @Date: 2025-06-19 15:36:18
|
||
|
|
* @LastEditTime: 2025-09-10 09:33:01
|
||
|
|
* @LastEditors: mypx mypx_coder@163.com
|
||
|
|
* @Description:
|
||
|
|
*/
|
||
|
|
#ifndef __AT24CX_H__
|
||
|
|
#define __AT24CX_H__
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
// Default I2C address
|
||
|
|
#define AT24_DEFAULT_ADDR 0x50 // 0xA0 shifted to 7-bit address
|
||
|
|
|
||
|
|
// I2C address range macro definitions for different models of AT24C series devices
|
||
|
|
#define AT24C01_ADDR 0x50
|
||
|
|
#define AT24C02_ADDR 0x50
|
||
|
|
#define AT24C04_ADDR 0x50
|
||
|
|
#define AT24C08_ADDR 0x50
|
||
|
|
#define AT24C128_ADDR 0xA0 // AT24C128 uses a 16-bit address
|
||
|
|
|
||
|
|
// Maximum page size of the device (AT24C128 page size is 64 bytes, other models may be smaller)
|
||
|
|
// This page size can be modified according to the EEPROM model (unit: bytes)
|
||
|
|
#ifndef AT24_MAX_PAGE_SIZE
|
||
|
|
#define AT24_MAX_PAGE_SIZE 64 // Default support for AT24C64 / 128 / 256
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Define chip models
|
||
|
|
typedef enum
|
||
|
|
{
|
||
|
|
AT24C01,
|
||
|
|
AT24C02,
|
||
|
|
AT24C04,
|
||
|
|
AT24C08,
|
||
|
|
AT24C128
|
||
|
|
} at24cx_chip_model_t;
|
||
|
|
|
||
|
|
// Define chip information structure
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
uint16_t min_addr;
|
||
|
|
uint16_t max_addr;
|
||
|
|
uint8_t addr_size;
|
||
|
|
} at24cx_chip_info_t;
|
||
|
|
|
||
|
|
// AT24 driver structure
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
// Function pointer to write bytes to the device
|
||
|
|
int (*write_bytes)(uint16_t dev_addr, uint16_t reg, uint8_t *data, uint16_t size);
|
||
|
|
// Function pointer to read bytes from the device
|
||
|
|
int (*read_bytes)(uint16_t dev_addr, uint16_t reg, uint8_t *data, uint16_t size);
|
||
|
|
// Function pointer to log messages
|
||
|
|
void (*log)(const char *tag, const char *fmt, ...);
|
||
|
|
// Device I2C address
|
||
|
|
uint8_t dev_addr;
|
||
|
|
// Chip model
|
||
|
|
at24cx_chip_model_t chip_model;
|
||
|
|
} at24cx_dev_t;
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Write a single byte to the specified address
|
||
|
|
int at24cx_write_byte(at24cx_dev_t *device, uint16_t addr, uint8_t data);
|
||
|
|
// Write multiple bytes to the device
|
||
|
|
int at24cx_write(at24cx_dev_t *device, uint16_t start_addr, uint8_t *data_buf, uint16_t write_num);
|
||
|
|
// Read a single byte from the specified register
|
||
|
|
int at24cx_read_byte(at24cx_dev_t *device, uint16_t reg, uint8_t *data);
|
||
|
|
// Read multiple bytes from the device
|
||
|
|
int at24cx_read(at24cx_dev_t *device, uint16_t start_addr, uint8_t *data_buf, uint16_t read_num);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#endif // __AT24CX_H__
|