The main protocols used in BLE are:

1. Generic Access Profile (GAP): It is used for device discovery and connection establishment between two Bluetooth devices. For example, when a Bluetooth device is searching for another device to connect to, it will use GAP to broadcast its presence and discover other devices.

2. Attribute Protocol (ATT): It is used to define how the two Bluetooth devices communicate with each other. ATT defines the format of the data that is exchanged between two devices.

3. Logical Link Control and Adaptation Protocol (L2CAP): It is used to manage the data packets that are exchanged between two devices. It is responsible for segmenting and reassembling data packets, which allows for efficient data transfer.

4. Security Manager Protocol (SMP): It is used to establish secure connections between two Bluetooth devices. It is responsible for authenticating the two devices and encrypting the data that is exchanged between them.

5. Generic Attribute Profile (GATT): It is used to define the way that data is structured and exchanged between two Bluetooth devices. For example, a GATT profile might define how a temperature sensor transmits data, or how a heart rate monitor sends data.

Leave a Reply

Your email address will not be published. Required fields are marked *