蓝牙 - BLE Basics

BLE Basics [ BLE基础 ]

需要了解的两个主要概念是 BLE 设备的两种模式：

Two major concepts to know about are the two modes of BLE devices:

* 广播模式（也称为通用访问配置文件 GAP）

* 连接设备模式（也称为通用属性配置文件 GATT）。

* Broadcasting mode (also called GAP for Generic Access Profile)

* Connected device mode (also called GATT for Generic ATTribute Profile).

GAP 模式用于广播外设广告，如 "我是一个名为 LEDBlue-19592CBC 的设备"，以及在需要时，为了与专用设备建立连接，来广播相关信息。在需要时建立所需的广告信息。外围设备还可能广播一些其提供的可用服务信息。

GAP mode deals with broadcasting peripheral advertisements, such as "I'm a device named LEDBlue-19592CBC", as well as advertising information necessary to establish a dedicated device connection if desired. The peripheral may also be advertising available services.

GATT 模式处理两台设备连接后的通信和属性传输，如心脏监视器和手机之间。

GATT mode deals with communications and attribute transfer between two devices once they are connec