蓝牙建立连接的大致流程是什么?或者说建立连接需要经历几个过程。最好能结合蓝牙的协议栈进行一下阐述?
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Connected Not Configured - The thermometer may be configured to enable measurement reports. The thermometer will not send stored measurements until the CCC is enabled. Once connection is established, the thermometer sets a timer to disconnect in 20 seconds.