Understanding Android Bluetooth Code : part 1 – Application Framework
At the application framework level is the app’s code, which utilizes the android.bluetooth APIs to interact with … Read more
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How Android Bluetooth Profiles are Enabled and Services Activated in AOSP
Trace how AOSP initializes Bluetooth profiles (A2DP, HFP, GATT) from SystemServer and AdapterService down to Fluoride HAL and Binder IPC.
Turn Your Linux PC into Wireless Bluetooth Speakers for Mobile Devices
Turn your Linux PC or Raspberry Pi into a wireless Bluetooth speaker for smartphones using BlueZ, PipeWire, and PulseAudio A2DP audio routing.
Configuring Ubuntu Linux as a Bluetooth A2DP Audio Receiver (A2DP Sink)
Configure Ubuntu Linux as a Bluetooth A2DP Sink audio receiver to stream audio wirelessly from mobile phones using PulseAudio, PipeWire, and BlueZ.
Send and receive data from user space and kernel using Netlink sockets
As mentioned in Linux kernel souce code net/netlink/af_netlink.c, netlink is a Kernel-user communication protocol which allows user … Read more
C program to read the contents of a file into character buffer
Lets say we want to read the contents of some file and want to operate on these … Read more
Sending HTTP POST Data from a Client and Returning Server Responses via Netcat
Send HTTP POST data from client tools (curl, Python) and return custom JSON responses using Netcat over a specific port on Linux.
Create Static Library in Linux
If you want to create shared library visit our another article “How to create Shared Library in … Read more
Bi-Directional Communication Between User-Space and Linux Kernel via Netlink Sockets
Learn bi-directional user-space to Linux kernel communication using Netlink sockets (AF_NETLINK) with full C kernel module and user client examples.
Compile native C library and daemon using Android.mk
To compile any c library inside android, we need to write an Android.mk makefile, for reference please … Read more
Listening on Specific Port Numbers with Netcat to Receive HTTP POST Requests
Listen on a specific port using Netcat (nc) to inspect incoming HTTP POST messages, webhooks, JSON payloads, and log headers in Linux.
Fix: Chrome Error "Something Went Wrong When Opening Your Profile" on Linux
Fix Chrome error 'Something went wrong when opening your profile' on Linux by removing SQLite lock files, fixing permissions, and restoring data.
Fix: no permissions (user in plugdev group; are your udev rules wrong?)
Resolve 'no permissions (user in plugdev group; are your udev rules wrong?)' error on Linux by configuring /etc/udev/rules.d/51-android.rules.
Enable Wifi with yocto
If you want to have WiFi integrated with yocto root filesystem, follow below mentioned steps, Open file, … Read more
Resolve: error: initializer element is not constant
Sometimes during complex programing, there are chances we make some mistakes during hurry to write and complete … Read more
Scanning and Listing Available Wi-Fi Networks in Linux: nmcli, iw, and iwlist
Scan and list available Wi-Fi networks in Linux using nmcli, iw, and iwlist. Learn BSSID, SSID, RSSI signal strength, and channel parsing.
Connect Wi-Fi from Linux Terminal Using Nmcli
nmcli is a command-line tool for controlling NetworkManager and reporting network status. It can be utilized as … Read more
Fix: error: package android.support.v7.app does not exist / AppCompatActivity cannot be resolved
Resolve 'error: package android.support.v7.app does not exist' and 'cannot resolve symbol AppCompatActivity' by migrating to AndroidX in Gradle.
Error Handling in C programs using errno, perror and strerror
The perror() function produces a message on standard error describing the last error encountered during a call … Read more
Arrays in Go language with Simple example
The below program initialises a static array of 7 elements and prints the values of each element … Read more
Automate Social Media Updates from Your Website Using Open-Source Tools and Webhooks
Automate social media posts from your website RSS feed using open-source tools like n8n, Huginn, and custom Node.js webhook bots.
Automating RSS 2.0 XML Feed Generation with Bash Scripts
Automate RSS 2.0 XML feed generation from website URLs using Bash, curl, date RFC-822 formatting, and XML entity escaping.
Creating Sendy compatible csv to import list of emails
Sendy is a self hosted email newsletter application that lets you send trackable emails via Amazon Simple Email … Read more
Java UDP Socket Programming: DatagramSocket and DatagramPacket Client-Server Guide
Master Java UDP socket programming: complete client-server code using DatagramSocket and DatagramPacket, packet buffering, and MTU mechanics.