/**
 * ==================================================
 *  @file imu_lis3dhtr.h
 *  @brief TODO 描述该文件的功能
 *  @author wangb
 *  @date 2026-01-27 12:21
 *  @version 1.0
 *  
 *  @details 本文件包含...
 *  
 *  @copyright Copyright (c) 2026 wangb. All Rights Reserved.
 *  
 *  @license 不开源
 * ==================================================
 */


#ifndef SMART_CANE_FALL_DETECTION_IMU_LIS3DHTR_H
#define SMART_CANE_FALL_DETECTION_IMU_LIS3DHTR_H

#include <stdint.h>


extern volatile uint8_t lis3dh_int_flag ;



/* ================= 寄存器定义 ================= */
#define LIS3DH_REG_WHOAMI      0x0F
#define LIS3DH_REG_CTRL1       0x20
#define LIS3DH_REG_CTRL2       0x21
#define LIS3DH_REG_CTRL3       0x22
#define LIS3DH_REG_CTRL4       0x23
#define LIS3DH_REG_CTRL5       0x24
#define LIS3DH_REG_STATUS      0x27

#define LIS3DH_REG_OUT_X_L     0x28
#define LIS3DH_REG_OUT_Y_L     0x2A
#define LIS3DH_REG_OUT_Z_L     0x2C

/* ---------- 中断相关寄存器 ---------- */
#define LIS3DH_REG_INT1_CFG     0x30
#define LIS3DH_REG_INT1_SRC     0x31
#define LIS3DH_REG_INT1_THS     0x32
#define LIS3DH_REG_INT1_DUR     0x33

#define LIS3DH_REG_REFERENCE    0x26

/* ================= I2C 地址 ================= */
#define LIS3DHTR_I2C_ADDR      (0x18 << 1)


/* ================= 数据结构 ================= */
typedef struct
{
    float x_g;
    float y_g;
    float z_g;
} lis3dh_accel_t;

/* ================= 接口函数 ================= */
void lis3dh_read(uint8_t reg, uint8_t *data, uint16_t len);
void lis3dh_write(uint8_t reg, uint8_t data);
uint8_t imu_lis3dhtr_init(void);
uint8_t imu_lis3dhtr_read_accel(lis3dh_accel_t *accel);
void lis3dh_clear_all_int_flags(void);
#endif //SMART_CANE_FALL_DETECTION_IMU_LIS3DHTR_H