Embedded Software & Tools

  • Operating Systems (Linux, RTOS, Android)
  • Firmware Development
  • Embedded Security
  • Development Tools & IDEs
  • AI/ML in Embedded Systems

Understanding C Programming: The Silent Functions Executed by the Compiler

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Understanding C Programming: The Silent Functions Executed by the Compiler

The C language compiler performs a large number of “invisible operations” behind the scenes, from program startup to memory management. These automatically invoked functions profoundly affect program behavior. Understanding them can not only help avoid hidden errors like memory leaks but also optimize performance in resource-constrained environments such as microcontrollers. 1. Program Startup: Functions Executed … Read more

A Beginner’s Guide to C Language: Representation and Definition of Constants

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A Beginner's Guide to C Language: Representation and Definition of Constants

Imagine you are writing a game program. There are some things that remain constant, such as the width of the screen, gravitational acceleration, and the player’s initial health points; while other things are constantly changing, like the player’s current coordinates, score, and the number of coins in the backpack. In the world of C language, … Read more

Why Do So Many People Still Use Windows Despite the Appeal of Linux?

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Why Do So Many People Still Use Windows Despite the Appeal of Linux?

It has been said that the biggest trap for the poor is learning.Why is that? Because learning is a particularly mysterious thing, very similar to love.In love, if you like a girl, you will face two situations.1. The girl does not like you: At this point, you can go to the gym, get a haircut, … Read more

Deep Dive into VFS: From Mounting to File System Types in Linux System Framework (Part 3)

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Deep Dive into VFS: From Mounting to File System Types in Linux System Framework (Part 3)

This is the third article in this series. Previously, we explored the Linux kernel and applications, discussing how applications invoke kernel capabilities through CPU privilege exceptions and interrupts. However, these implementations are quite low-level and not directly relevant to most business application development. In this chapter, we will discuss how the file system, which interacts … Read more

Linux Troubleshooting Case – CentOS 7 Network Interface Fails to Start

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Linux Troubleshooting Case - CentOS 7 Network Interface Fails to Start

The failure phenomenon is shown in the figure below: Failed to start LSB: Bring up/down networking. Solution 1: This issue is generally related to the system’s built-in NetworkManager management suite; disabling it can resolve the problem. systemctl stop NetworkManager // Stop the NetworkManager service systemctl disable NetworkManager // Disable it from starting at boot systemctl … Read more

Configuring Bonding for High Availability with Dual Network Cards on CentOS 7

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Configuring Bonding for High Availability with Dual Network Cards on CentOS 7

Configuring Bonding for High Availability with Dual Network Cards on CentOS 7 First, check the system version: Initial configuration of network card eth0: Initial configuration of network card eth1: Configure dual network cards for primary and backup 1.Stop the NetworkManager service 1.Add bond0 1.Modify eth0 1.Modify eth1 1.Restart the network cards 1.Check the status 1.Add … Read more

Practical Linux Disk Management (Partitioning, Formatting, Mounting)

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Practical Linux Disk Management (Partitioning, Formatting, Mounting)

<span>In the Linux system, disk management is a fundamental knowledge point. Properly performing disk partitioning, formatting, and mounting ensures that we can fully utilize disk space and efficiently store and access data.</span> <span>Compared to the simple drive letter management in Windows systems, disk management in Linux is more complex and flexible. In the Linux system, … Read more

How to Create a Virtual Disk in Linux?

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How to Create a Virtual Disk in Linux?

Some applications need to be concerned about the available disk capacity, such as logging systems and data storage modules. They often encounter an important question: “What to do when the disk is full?” To test this situation, do we really need to fill up hundreds of GB of disk space? Clearly, this method is time-consuming … Read more

How to Check Your External IP Address on a Linux Server

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How to Check Your External IP Address on a Linux Server

Background When using a Linux server, we often access it via remote terminal command line. Sometimes, we need to call third-party services that have IP whitelist restrictions. In such cases, we need to provide our public IP address to the third party for whitelist configuration. Unlike Windows, where we can easily search for our IP … Read more