QMA7981数据手册英文版以及中文对照版，中文版机翻，基本可以阅读。
附带7981倾斜角度和震动中断设置程序。倾斜角度代码用于检测水平和倾斜状态，震动中断用于唤醒单片机睡眠状态。
图片为QMA7981脚位连接图，适合本人代码。(Qma7981 data manual is available in English and Chinese. The Chinese version is machine-readable.
The 7981 tilt angle and vibration interrupt setting procedure is attached. The tilt angle code is used to detect the level and tilt state, and the vibration interrupt is used to wake up the sleep state of MCU.
The picture is qma7981 pin connection diagram, suitable for my code.)