PC使用EasyARM软件观察RTC万年历和RTC唤醒CPU。用串口线将FQ2478的COM0和PC相连。程序首先初始化RTC，发送 一次时间信息给上位机后进入掉电模式，等待RTC报警来唤醒，

唤醒后发送一次新的时间信息到上位机，蜂鸣器鸣叫3次。-The PC use EasyARM Software observe the RTC calendar and RTC wake up the CPU. COM0 and PC serial cable FQ2478 connected. The program first initializes the RTC send time information to the host computer to enter power down mode, wait for RTC alarm to wake up

Send a new wake-up time information to the host computer, the buzzer sounds 3 times.