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蓝牙4.0 的OSAL中定时器启动，在OSAL_API文档中说明用osal_start_timerEx( )来启动定时器，但是osal_start_timerEx( )里面仅仅调用osalAddTimer（）来添加一个定时器，添加之后是如何让定时器工作的的呢？或者说是如何激活定时器开始计时的呢？谢谢
实际是把定时器任务串成链表，然后main->osal_start_system->osal_run_system->osalTimeUpdate->osalTimerUpdate,一旦时间用尽，调用osal_set_event( srchTimer->task_id, srchTimer->event_flag );相应的任务就会由你注册的任务task_id,去处理。
源代码都是开放的，仔细看看就明白了。
