蓝牙 BLE GATT 剖析（一）

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蓝牙 BLE GATT 剖析（一）

一.概述 The Generic Attribute Profile (GATT) defines a service framework using the Attribute Protocol. This framework defines proceduresand formats of services and their characteristics. The proceduresdefined include discovering, reading,writing, notify…

蓝牙 BLE GATT 剖析（二）-- GATT UUID and 举例

generic attribute profile (GATT)The Generic Attributes (GATT) define a hierarchical data structure that is exposed to connected Bluetooth LE devices. 一.UUID GATT Services GATT Attribute Types GATT Characteristic Descriptors GATT Characteristic Types…

蓝牙BLE: GATT Profile 简介(GATT 与 GAP)

一. 引言现在低功耗蓝牙(BLE)连接都是建立在 GATT (Generic Attribute Profile) 协议之上.GATT 是一个在蓝牙连接之上的发送和接收很短的数据段的通用规范,这些很短的数据段被称为属性(Attribute). 二. GAP 详细介绍 GATT 之前,需要了解 GAP(Generic Access Profile),它在用来控制设备连接和广播.GAP 使你的设备被其他设备可见,并决定了你的设备是否可以或者怎样与合同设备进行交互.例如 Beacon 设备就只是向外…

蓝牙BLE 架构剖析

一.BLE架构概述: 二.各个层…

蓝牙BLE ATT剖析（二）-- PDU

一.Error Handling Error Response The Error Responseis used to state that a given request cannot be performed, and to provide the reason.Note: The Write Command does notgenerate an Error Response 二.MTU Exchange 1.Exchange MTU Request The Exchange MTU R…

蓝牙BLE ATT剖析（一）

一.概述 The attribute protocol allows a device referred to as the server to expose a set of attributes and their associated values to a peer device referred to as the client. These attributes exposed by the server can be discovered, read, and written by…