61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
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#ifndef INT_EEPROM24XX_H
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#define INT_EEPROM24XX_H
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#include <stdint.h>
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#include <stddef.h>
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typedef int32_t IntEEPROM_Result_t;
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#define INT_EEPROM_OK 0
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#define INT_EEPROM_ERR_ARG -1
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#define INT_EEPROM_ERR_IO -2
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/* 底层总线读回调：
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* ctx : 用户上下文（可传 I2C 句柄、驱动实例等）
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* dev_addr : 器件地址（格式由你的平台驱动决定）
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* mem_addr : EEPROM 内存地址
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* mem_addr_size : 地址字节数（1 或 2）
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* timeout_ms : 访问超时（毫秒）
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*/
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typedef IntEEPROM_Result_t (*IntEEPROM_BusRead_t)(void *ctx,
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uint16_t dev_addr,
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uint32_t mem_addr,
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uint8_t mem_addr_size,
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uint8_t *buf,
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uint16_t len,
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uint32_t timeout_ms);
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/* 底层总线写回调，参数含义同读回调 */
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typedef IntEEPROM_Result_t (*IntEEPROM_BusWrite_t)(void *ctx,
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uint16_t dev_addr,
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uint32_t mem_addr,
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uint8_t mem_addr_size,
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const uint8_t *buf,
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uint16_t len,
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uint32_t timeout_ms);
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typedef void (*IntEEPROM_DelayMs_t)(void *ctx, uint32_t delay_ms);
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typedef struct
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{
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void *ctx; /* 用户上下文 */
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uint16_t dev_addr; /* 器件地址 */
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uint16_t page_size; /* 页大小（字节） */
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uint8_t mem_addr_size; /* 地址字节数：1 或 2 */
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uint32_t write_cycle_ms; /* 每次页写后等待时间（ms） */
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uint32_t timeout_ms; /* 总线访问超时（ms） */
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IntEEPROM_BusRead_t bus_read;
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IntEEPROM_BusWrite_t bus_write;
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IntEEPROM_DelayMs_t delay_ms;
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} IntEEPROM24xx_t;
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/* 读取 EEPROM。
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* 返回 INT_EEPROM_OK 表示成功。
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*/
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IntEEPROM_Result_t Int_EEPROM24xx_Read(const IntEEPROM24xx_t *dev, uint32_t mem_addr, uint8_t *buf, uint16_t len);
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/* 写入 EEPROM（内部会自动按页拆分写入）。 */
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IntEEPROM_Result_t Int_EEPROM24xx_Write(const IntEEPROM24xx_t *dev, uint32_t mem_addr, const uint8_t *buf, uint16_t len);
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#endif
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