实现看门狗定时器的计时和其中断

程序运行成功之后，



超级终端上将显示：

WatchDog Timer Test Example

10 seconds:

1s 2s 3s 4s 5s 6s 7s 8s 9s 10s

O.K. End.-The timing watchdog timer and interrupt

After the success of the program is running,



HyperTerminal will be displayed:

WatchDog Timer Test Example

  10 seconds:

  1s 2s 3s 4s 5s 6s 7s 8s 9s 10s

  The O.K. END.