Bluetooth Driver

Bluetooth Driver

Bluetooth driver also known as profile driver is written by independent hardware vendors (in short, IHVs) to support various protocols defined in the Bluetooth specifications. Profile drivers should follow the Windows Driver Model (WDM) architectureÂ

To support the Bluetooth protocol, Microsoft supplies several Bluetooth drivers and support files, including:

BthPort.sys

BthEnum.sys

BthUsb.sys

BthProps.cpl

IHVs must use Windows Vista or later to develop their profile drivers because earlier versions of Windows, including Windows XP with SP2, do not support profile driver development.

The Bluetooth driver stack provides device driver interfaces (DDIs) that enable profile drivers to access Synchronous Connection-Oriented (SCO) links and Logical Link Controller and Adaptation Protocol (L2CAP) links between the local system and remote Bluetooth devices

SCO

Synchronous connection-oriented (SCO) links are point-to-point connections between two Bluetooth devices. They are defined primarily to support time-bounded information like voice.

L2CAP and SDP

The L2CAP is designed to support asynchronous connectionless link (ACL) Bluetooth links. The Bluetooth driver stack provides support for connection-oriented services. Profile drivers use the Bluetooth L2CAP DDIs to open, update, and close L2CAP connections, as well as to perform read and write operations over an open L2CAP connection. Â

There are two installation types for Bluetooth driver:

Client-side installation

Server-side installation