Cross compile static dtc for ARM
As we seen in our previous post, “How to Compile and Install device-tree-compiler (DTC) On Ubuntu”, we … Read more
Lynxbee topic
lynxbeedev
Resolve : fatal error: curses.h: No such file or directory
Whenever you are trying to do kernel menuconfig very first time after installation of Ubuntu, its chances … Read more
Fix Yocto No GNU_HASH ELF QA Errors
Yocto reports No GNU_HASH when a packaged ELF was not linked with the build system’s LDFLAGS. Fix the upstream link command first; suppress the check only for an unavoidable, verified prebuilt binary.
setup_irq vs request_irq in Modern Linux
setup_irq belongs to historical early-platform code. Current device drivers should register handlers with request_irq, request_threaded_irq, or a device-managed wrapper.
What is the difference between elfutils and binutils
As per wikipedia, elfutils is mentioned as, “Ulrich Drepper wrote elfutils, to replace GNU Binutils, purely for … Read more
WiFi monitor mode and commands to enforce monitor mode in Linux / Ubuntu
Monitor mode, or RFMON (Radio Frequency MONitor) mode, allows a computer with a wireless network interface controller (WNIC) to monitor all traffic received from the wireless network. Monitor mode allows packets to be captured without having to associate with an access point or ad hoc network first.
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, … 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.
Sending ARP request and receiving ARP Reply using C code
This post is in continuation of our previous post “Understanding ARP (Address Resolution Protocol) basics“ To visualise … Read more
Fix Android Support Library Version Mismatch Errors
This error belongs to legacy Android Support Library projects. Trace the dependency that introduced an older artifact, then either align everything on 28.0.0 or finish the move to AndroidX.
Solved: “Error: The logging tag can be at most 23 characters, was”
Have you ever seen an error like, “Error: The logging tag can be at most 23 characters, … Read more
Fetch Daily Mandi Prices from the data.gov.in API
Use the official data.gov.in resource API to retrieve daily Agmarknet mandi prices by state, market, commodity, variety, and grade—without mistaking daily reports for a live market feed.
Get a data.gov.in API Key and Make Your First Request
A current, practical walkthrough for registering on data.gov.in, generating an API key, finding a usable resource ID, and testing the first request safely.
Compile elfutils for x86 based platforms
elfutils is a collection of utilities and libraries to read, create and modify ELF binary files, find … Read more
Adb logcat
Save Logcat Logs to File using File Redirection Collecting logs on desktop from android device Save logcat … Read more
Modifying bitbake/yocto initscripts to start wifi during boot
We will need to change the wpa-supplicant.conf file as below, by modifying poky/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/wpa_supplicant.conf-sane Now, once we modified … Read more
Bitbake / Yocto recipes for cross compiling golang program
For compiling simple golang helloworld program as part of yocto build framework, we need to download meta-golang … Read more
Fix “Invalid Operands to Binary %” in C
This compiler error means `%` received a floating-point operand. Fix the underlying type choice with integer arithmetic or the appropriate `fmod` function—not a reflexive cast.
Querying Network Interface Details by Name in Go (net.InterfaceByName)
Write a Go program using net.InterfaceByName to lookup IP addresses, MAC hardware addresses, MTU, and status flags for a specific network interface.
Go Program : Identify total number of network interfaces and display the details using index
Following example shows how to identify total number of available network interfaces and display its details using network packages InterfaceByIndex API. $ vim InterfaceByIndex.go package main import ( "net" "fmt" "log" ) func main(){ ifaces, err := net.Interfaces() if err != nil {
Inspecting Linux Network Interfaces, MACs, and IP Addresses in Go
Learn how to enumerate network interfaces, inspect MAC addresses, extract IPv4/IPv6 CIDR subnets, and check interface status flags using Go.
Merging PHP Arrays and Deduplicating Unique Elements
Merge two or more PHP arrays and filter unique elements using array_merge(), array_unique(), modern spread unpack operators, and array union operators.
Use slices ( like dynamic array ) in go language
An array has a fixed size. A slice, on the other hand, is a dynamically-sized, flexible view … Read more
Building Android AAR Libraries and Linking Module API Methods
Learn how to create an Android AAR library module in Gradle, define public API interfaces, link local module dependencies, and invoke library functions.