Welcome to BTstack
BTstack is BlueKitchen's implementation of the official Bluetooth stack.
It is well suited for small, resource-constraint devices
such as 8 or 16 bit embedded systems as it is highly configurable and comes with an ultra small memory footprint.
Targeting a variety of platforms is as simple as providing the necessary UART, CPU, and CLOCK implementations. BTstack is currently capable of connecting to Bluetooth-modules via: (H2) HCI USB, (H4) HCI UART + TI's eHCILL, and (H5) HCI Three-Wire UART.
On smaller embedded systems, a minimal run loop implementation allows to use BTstack without a Real Time OS (RTOS).
If a RTOS is already provided, BTstack can be integrated and run as a single thread.
On larger systems, BTstack provides a server that connects to a Bluetooth module.
Multiple applications can communicate with this server over different inter-process communication methods. As sockets are used for client/server communication, it's easy to interact via higher-level level languages, e.g. there's already a Java binding for use in desktop environments.
BTstack supports the Central and the Peripheral Role of Bluetooth 5 Low Energy specification incl. LE Secure Connections, LE Data Channels, and LE Data Length Extension. It can be configured to run as either single-mode stack or a dual-mode stack.
BTstack is free for non-commercial use. However, for commercial use, tell us a bit about your project to get a quote.
Third-party libraries (FOSS): List of used libraries and their licenses
Discussion and Community Support: BTstack Google Group
Supported Protocols and Profiles
Protocols: L2CAP (incl. LE Data Channels), RFCOMM, SDP, BNEP, AVDTP, AVCTP, ATT, SM (incl. LE Secure Connections).
Profiles: GAP, IOP, HFP, HSP, SPP, PAN, A2DP, AVRCP incl. Browsing, GATT.
Beta Stage: HID, HOGP, PBAP.
In Development: BLE Mesh and more.
It has been qualified with the Bluetooth SIG (QDID 110883) for GAP, IOP, HFP, HSP, SPP, PAN, A2DP, AVRCP profiles and
GATT, SM of the Bluetooth 5 specification. For information on MFi/iAP2 support, please contact us.
Evaluation Platforms
Embedded Platforms:
Build Status