原本是基于STM8芯片架构的万年历算法，其中最主要的是辨析某年某月某日是星期几。以及正常的时间闹钟时间触发驱动。-STM8 chip architecture was originally based on the calendar method, the most important is discrimination a certain period of a day of the week. And the normal time-driven trigger the alarm time.