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
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
How Android Bluetooth profiles are enabled ? Ans: Check packages/apps/Bluetooth/res/values/config.xml <resources> 16 <bool name=”profile_supported_a2dp”>true</bool> 30</resources> If you want to disable the above profile, change from “true” to “false” Check related lxr 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. private static … Read more
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
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
We can turn on the Bluetooth using adb command as below, $ adb shell am start -a android.bluetooth.adapter.action.REQUEST_ENABLE once you type this on your desktop/laptop, Android will prompt the user on Mobile / Android device for allowing permissions to turn ON the bluetooth, like below We can make the Bluetooth Discoverable using adb command as … Read more
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 wheter 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
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. … Read more
Rfkill is a tool for enabling and disabling wireless devices. $ rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no As seen above we have a WiFi, LAN and Bluetooth supported and ON … Read more
Create a file as below, $ vim /etc/bluetooth/audio.conf [bash] # This section contains options which are not specific to any # particular interface [General] Enable=Source,Sink,Headset,Gateway,Control,Media Disable=Socket [/bash] Install Blueman as, $ sudo apt-get install blueman $ sudo apt-get install pulseaudio-module-bluetooth Start blueman manager as, $ blueman-manager You may see a window like below, Start Bluetooth … Read more
