What Bluetooth stack does Android use?

Android’s Bluetooth stack uses BlueZ as the host stack. Bluez is GPL licensed, so the Android framework interacts with userspace bluez code through D-BUS IPC to avoid proprietary code.

What protocol does Bluetooth use?

The commonly adopted protocols used in Bluetooth are Point-to-Point Protocol (PPP), Internet Protocol (IP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP), and Wireless Application Protocol (WAP).

What is Bluetooth Hal?

Bluetooth HAL interface Provides an software abstraction layer that interfaces with the actual Bluetooth implementation and/or drivers. RDK Bluetooth HAL layer enables projects to pick whatever Bluetooth profiles as per their requirements. Bluetooth HAL uses BlueZ5.

What is Bluetooth HCI snoop?

When the Bluetooth HCI snoop log is enabled, the Android framework will capture Bluetooth packets sent and received between central and peripheral devices and store them as part of a bug report. To enable the Bluetooth HCI snoop log: On stock Android open Settings > System > Advanced > Developer options.

What is the Android architecture?

Android architecture is a software stack of components to support mobile device needs. Android software stack contains a Linux Kernel, collection of c/c++ libraries which are exposed through an application framework services, runtime, and application.

What is the architecture of Bluetooth?

Bluetooth is a network technology that connects mobile devices wirelessly over a short range to form a personal area network (PAN). They use short-wavelength, ultra-high frequency (UHF) radio waves within the range 2.400 to 2.485 GHz, instead of RS-232 data cables of wired PANs.

What is native Bluetooth?

Native BLE means the device has BLE built into it. Connection Type. Bridge/Receiver. Notes. Device using ANT connecting to PC.

What is L2CAP in Bluetooth?

Logical Link Control and Adaptation Protocol (L2CAP) is a protocol used in the Bluetooth standard that provides adaption between higher layers and the baseband layer of the Bluetooth stack.

How do you sniff Bluetooth on Android?

On the applicable Android devices, it is possible to capture Bluetooth traffic as follows:

  1. Go to Settings.
  2. If developer options is not enabled, enable it now.
  3. Go into developer options.
  4. Enable the option Enable Bluetooth HCI snoop log.
  5. Enable the Bluetooth option and Connected to the device.

What is BTSnoop log in Android?

In Android 4.4 and later, you can manually collect BTSnoop logs, which resemble the snoop format in RFC 1761. These logs capture the Host Controller Interface (HCI) packets. For most Android devices, the logs are stored in data/misc/bluetooth/logs .