April 2017
Intermediate to advanced
242 pages
6h 10m
English
Content preview from Building Bluetooth Low Energy Systems
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Attribute Protocol (ATT) and Generic Attribute Profile (GATT)
Bluetooth Low Energy brought two core specifications and every Low Energy profile is supposed to use them. Attribute Protocol and Generic Attribute Profile.
Attribute Protocol is a low-level layer that defines how to transfer data. It identifies the device discovery, reading and writing attributes on a fellow device. On the other hand, Generic Attribute Profile is built on the top of ATT to give high-level services to the manufacturer implementing LE. These services are basically used to manage the data transfer process in a more systematic way. For example, GATT defines if a device's role is going to be Server or Client.
An interesting thing about ATT and GATT is that they are ...
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