As a seasoned computer professional, you’re likely no stranger to the world of wireless communication. With the proliferation of IoT devices, Bluetooth Low Energy (BLE) has emerged as a popular choice for device connectivity. At the heart of BLE lies the Generic Attribute Profile (GATT), a crucial component that enables seamless data exchange between devices. In this article, we’ll delve into the intricacies of BLE GATT, exploring its architecture, key concepts, and practical applications. What is BLE GATT? BLE GATT is a protocol that defines how devices interact with each other over BLE. It’s a hierarchical structure that facilitates the exchange of data between a peripheral device (e.g., a smart sensor) and a central device (e.g., a smartphone). GATT is built on top of the Attribute Protocol (ATT), which provides a way for devices to read and write attributes, such as device names and services. GATT Architecture The GATT architecture consists of three primary components: Services: These are logical groupings of attributes that define a specific function or feature of a device. Services are used to categorize attributes into meaningful categories, making it easier for devices to discover and interact with each other.Characteristics: These are individual attributes that contain specific data, such as sensor readings or device settings. Characteristics are the building blocks of services and are used to define the actual data being exchanged.Descriptors: These are optional attributes that provide additional information about a characteristic, such as a human-readable description or a unit of measurement. How BLE GATT Works… Read more