蓝牙BLE ATT剖析（二）-- PDU

最新推荐文章于 2025-07-20 19:21:57 发布

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最新推荐文章于 2025-07-20 19:21:57 发布

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本文链接：https://blog.youkuaiyun.com/qq_43680229/article/details/84072548

本文详细介绍了蓝牙BLE ATT协议中的PDU，包括Error Handling、MTU Exchange、Find Information、Reading Attributes、Writing Attributes以及Server Initiated等操作，如Error Response、Exchange MTU Request/Response、Read By Type Request/Response、Write Request/Command和Handle Value Notification/Indication/Confirmation等。同时，文中提及了适用于初学者的人工智能教程。

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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 Requestis used by the client toinform the server of the
client’s maximum receive MTU size and requestthe server to respond with its
maximum receive MTU size.

2.Exchange MTU Response

The Exchange MTU Responseis sent in reply to a received Exchange MTU
Request.

三.Find Information

1.Find Information Request

The Find Information Requestis used to obtain the mapping of attribute
handles with their associated types. This allows a client to discover the list of
attributes and their types on a server