Endless possibilities with Bluetooth and profiles.
Profiles are definitions of possible applications and specify general behaviors that Bluetooth® enabled devices use to communicate with other Bluetooth devices. Profiles build on the Bluetooth standard to more clearly define what kind of data a Bluetooth module is transmitting. The device’s application determines which profiles it must support, from hands-free capabilities to heart rate sensors to alerts and more.
For two Bluetooth devices to be compatible, they must support the same profiles. And while profiles generally describe the same use case behaviors, they are different for Bluetooth BR/EDR and LE implementations. Compatibility between BR/EDR and LE implementations requires a dual-mode controller on at least one device for interoperability. For BR/EDR, a wide range of adopted Bluetooth profiles describe many different common types of applications or use cases for devices. For Bluetooth LE, developers have the option of using a comprehensive set of adopted profiles, or use the Generic Attribute Profile (GATT) to create new profiles. This helps support innovative new applications that maintain interoperability with other Bluetooth devices.
Bluetooth profiles typically contain information such as dependencies on other profiles and suggested user interface formats. For BR/EDR, the profile will also specify the particular options and parameters at each layer of the Bluetooth protocol stack used to perform its task. This may include, if appropriate, an outline of the required service record.