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CN-Wio-terminal-BLE-introduction.md
客户端向服务器发出数据通信请求,允许设备与其他蓝牙设备进行无线数据交换。 服务器向客户端提供数据服务,它通过特征将数据封装起来。多个特征组成一个服务,因此服务是基本的BLE应用程序。 客户端和服务器是通信关系,它们都可以作为主设备或从设备。
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