zigbee中的定时器中断程序，开发平台是cc2430，对定时器进行操作和运用-zigbee the timer interrupt program, the development platform is cc2430, operate and use the timer

zigbee cc2430 定时器操作，0.5s灯闪烁，0.5灯灭掉(ZigBee CC2430 timer operation, 0.5s lights flashing, 0.5 lights out.)