XS128中，通过实时中断，做一个秒钟计数(0~99)，每秒将该计数以及一串星号发送到串口上。-In XS128,Through the real-time interrupt, do a seconds count(0-99), and send the seconds and a string of asterisks to a serial port per second.

非常好的串口程序 ，已经测试通过，直接就能用了啊，呵呵 XS128 的-Very good serial program has been tested, straightforward to use, I XS128