/**
 * @file se050_i2c_hal.h
 * @brief SE050 I2C HAL Interface
 */

#ifndef SE050_I2C_HAL_H
#define SE050_I2C_HAL_H

#include <stdint.h>
#include <stddef.h>
#include <string.h>

/* Status codes */
typedef enum {
    SE050_OK = 0,
    SE050_ERR_INVALID_ARG = -1,
    SE050_ERR_I2C = -2,
    SE050_ERR_TIMEOUT = -3,
    SE050_ERR_INTERNAL = -4,
    SE050_ERR_SESSION = -5,
    SE050_ERR_FAIL = -6,
    SE050_ERR_RNG = -7,
    SE050_ERR_ECDH = -8,
    SE050_ERR_NOT_INIT = -9,
    SE050_ERR_SCP03 = -10
} se050_status_t;

/* I2C HAL structure */
#define SE050_I2C_DEV_PATH_MAX  64

typedef struct {
    void *handle;           /**< I2C file descriptor */
    uint8_t slave_addr;     /**< I2C slave address */
    char dev_path[SE050_I2C_DEV_PATH_MAX];  /**< I2C device path */
    int wakeup_pin;         /**< Wakeup GPIO pin (-1 if unused) */
} se050_i2c_hal_t;

/* Public API */
se050_status_t se050_i2c_init(se050_i2c_hal_t *hal, const char *dev_path, uint8_t slave_addr);
void se050_i2c_close(se050_i2c_hal_t *hal);
int se050_i2c_read(se050_i2c_hal_t *hal, uint8_t *buffer, int length);
int se050_i2c_write(se050_i2c_hal_t *hal, const uint8_t *buffer, int length);
se050_status_t se050_i2c_wakeup(se050_i2c_hal_t *hal);

#endif /* SE050_I2C_HAL_H */