How to check if Bluetooth device is UP or NOT using l2ping ?

If you want to know the bluetooth device you want to connect to is alive or not, i.e. whether that device’s Bluetooth is ON or not and whether it can respond to our other request like enquiry for information etc. For this l2ping helps us. L2ping sends a L2CAP echo request to the Bluetooth MAC … Read more

Scan, Pair, Connect to Bluetooth device from Ubuntu from command line using bluetoothctl

bluetoothctl is bluetooth control tool which allows us to make the host discoverable, scan other devices, pair to the scanned devices and also connect to those devices using command line utility on ubuntu. Follow below commands for the same. Commands are self explanatory, replace scaned mac address of your device instead of “6C:C4:D5:6C:C5:BC” whereever required.

How Android Bluetooth Profiles are enabled and Services are activated ?

How Android Bluetooth profiles are enabled ? Answer: Check packages/apps/Bluetooth/res/values/config.xml If you want to disable the above profile, change from “true” to “false” The above flags are used during initialisation as below, in file, packages/apps/Bluetooth/src/com/android/bluetooth/btservice/Config.java Resource flag to indicate whether profile is supported or not. Supported Profile services are defined at, Now inside init, it … Read more

Turn Your Linux PC Into Bluetooth Speakers For Your Mobile Phone

WiFi

This post shows steps to Play Songs from mobile and listen on laptop/desktop speaker over Bluetooth. The steps are performed on Ubuntu 16.04, there might be some issues for later Ubuntu version, you can try. Create a file as below, Install Blueman as, Start blueman manager as, You may see a window like below, Start … Read more

Configure Ubuntu 16.04 as Bluetooth A2DP Sink

This post shows steps configure Ubuntu 16.04 as Bluetooth A2DP Sink. When Ubuntu is acting as A2DP sink you will be able to Play Songs from mobile and listen on laptop/desktop speaker over Bluetooth. Create a file as below, Install Blueman as, Start blueman manager as, You may see a window like below, Start Bluetooth … Read more

Check Bluetooth services of a remote device

With following mechanism, we can check the bluetooth profiles and services of a remote device, 1) Switch on bluetooth and make it discoverable ( in my case its Samsung Mobile ) 2) On ubuntu, check mac id using below command, $ hcitool inqInquiring …38:EC:E4:50:2C:F7    clock offset: 0x1164    class: 0x5a020c 3) Now to check services and … Read more

Using hcitool to get bluetooth device information

Below commands are shown for communication between Linux Laptop and Samsung Mobile to get Mobile bluetooth device information using hcitool. For this, first make sure laptop bluetooth is turned ON and then switch ON the Bluetooth of Mobile and Make it discoverable/visible to all nearby bluetooth devices. Lets try to understand what is hcitool, $ … Read more

Understanding Bluetooth Basics – Pairing and Handshaking process

What is Bluetooth? Bluetooth is a standardized protocol for sending and receiving data via a 2.4GHz wireless link. It’s a secure protocol, and it’s perfect for short-range, low-power, low-cost, wireless transmissions between electronic devices. How Bluetooth Works ? The Bluetooth protocol operates at 2.4GHz in the same unlicensed ISM frequency band where RF protocols like … Read more

How to capture bluetooth packets on Android

When we want to capture bluetooth packets for some debugging in Android, we can follow below procedure. Enable Bluetooth and then make sure you have also enabled developer options. Go to developer options, and enable “Enable Bluetooth HCI Snoop Log” then do the operations of what you need to capture from bluetooth, Now, connected your … Read more

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