Click on the above“Hardcore Wang”, select“Pin/Star the Official Account” Get the latest benefits and resources delivered to you Hello everyone, I am Hardcore Wang. “I previously worked on desktop software development using C++ Qt under Windows, but recently while looking for a new job, I found that many positions require Linux, and very few require … Read more
Click the blue text above to follow me and read beautiful articles The Linux operating system’s kernel manages various hardware devices in the system, including buses, devices, and drivers. This article will introduce the basic concepts of buses, devices, and drivers in the Linux system, as well as their relationships. By combining the relevant /sys … Read more
Operating System in C: Device Drivers Introduction Device drivers are a crucial component of an operating system, acting as a bridge between hardware and software. Through device drivers, the operating system can control and manage hardware devices such as printers, graphics cards, and network adapters. In this article, we will delve into how to write … Read more
Content Overview What is Embedded? What is Cross-Compilation? Getting Started and Improving in Embedded 1. What is Embedded? Embedded can be said to be one of the most widely covered and popular professions today. So, what is embedded? This question cannot be easily answered in just a few words. Embedded, in English, is “embedded,” meaning … Read more
Click the aboveblue text to follow us In embedded Linux, asynchronous I/O (AIO) is a powerful I/O model that allows processes to continue executing other tasks while waiting for I/O operations to complete. Compared to I/O multiplexing mechanisms (such as select and poll), asynchronous I/O uses a signal notification mechanism, allowing processes to avoid repeatedly … Read more
Host Development Environment: Ubuntu 9.10 Kernel: Linux 2.6.22.6 (from the data CD -> systems directory) File System: fs_qtopia.yaffs2 (from the data CD -> bin directory) Development Board: JZ2440 Objective: Transfer files to the development board via SD card It’s actually quite simple, just one mount command. This guide is written in detail for beginners who … Read more
01 Using the make tool When programming on Windows, we use an IDE with a graphical interface and corresponding buttons, such as build or run, to compile. By directly entering the make command in the console, it will automatically invoke the make tool.02 Makefile The make tool will look for a makefile in the current … Read more
01 1. Introduction to CD Resources Join me to become an embedded Linux expert, let’s get started! 02 Next, we will learn together. 01_ Development and Flashing Tools （Linux image flashing tools, cross-compilers, bare-metal image creation tools） 1. Cross-compiler （ARM cross-compiler） 2. Bare-metal image creation tools （Bare-metal image creation tools） 3. mfgtools_for_6ULL （Image flashing tools） … Read more
In the field of Linux virtualization, KVM and QEMU are the two most common tools. Many people have heard of them, but often confuse their differences, with some even mistakenly believing they are the same thing. Today, we will unveil their mysteries and explore the characteristics, roles, and how KVM and QEMU work together! 1. … Read more
LinuxMirrors provides a very convenient source change script. You only need to run a single command to help users quickly change the software source of the Linux system and install Docker. It supports various mainstream Linux distributions, including Debian, Ubuntu, CentOS, Fedora, etc., and can automatically detect the system type and version, providing the most … Read more