Circuit Troubleshooting

Understanding RK3588 PCIe: From Hardware Resources to Split Configuration + Pitfall Guide (Includes Mind Map)

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Understanding RK3588 PCIe: From Hardware Resources to Split Configuration + Pitfall Guide (Includes Mind Map)

RK3588 is Rockchip’s flagship SoC, its PCIe controller, with flexible link splitting capabilities and rich features, has become the core bridge for connecting peripherals such as NVMe, WiFi, AI acceleration cards, etc. This article integrates hardware resource analysis, practical split configuration schemes, key configuration steps, and pitfall points, along with a visual mind map, to … Read more

Detailed Guide to Running Qt Applications on Embedded Linux: Platform Plugin Mechanisms from Qt4 to Qt5/6

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Introduction Deploying Qt applications in embedded Linux systems is a common requirement in scenarios such as industrial control, smart terminals, and in-vehicle systems. However, unlike desktop environments, embedded devices often lack a complete graphics stack (such as X11 or Wayland) and may not even have a window manager. Therefore, Qt provides various platform plugins to … Read more

Is Your Server Lagging? 10 Linux Commands to Identify Performance Bottlenecks in 5 Minutes

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Server response is slow, services fail to start, disk space is running low… When faced with these common issues, blindly restarting the server not only fails to address the root cause but may also obscure the real problems. This article compiles 10 key <span>Linux</span> commands, along with detailed usage methods and scenario descriptions, to help … Read more

The Ultimate Guide to Linux Command Line for Cloud Engineers

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The terminal is your gateway to cloud infrastructure. Whether you are connecting to an EC2 instance via SSH, troubleshooting Lambda container environment issues, or configuring ECS tasks, you need to be proficient in operating Unix-like systems. This guide covers the essential Linux command line skills that cloud engineers will use in their daily work. By … Read more

Linux System Optimization: In-Depth Analysis of Increased Disk Latency Issues

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Based on the previous chapters, we have basically mastered a series of fundamental information about file systems and disks, from the entire read and write process from applications to disks, as well as the role of the virtual file system and block device layer in bridging these components, and finally obtaining some performance metrics to … Read more

Common and Advanced Commands for Viewing Logs in Linux

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In Linux, viewing and analyzing logs is a core operation for daily maintenance or testing. Below are common and advanced commands for viewing logs and their usage scenarios. 1. Common commands for viewing historical logs 1) Regularly search for log information containing specific keywords in designated log files. 1) Ignore case sensitivity, allowing for matches … Read more

Detailed Explanation of CAN Bus Normal Voltage: Understand Quickly with Diagrams for Rapid Fault Location

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For friends engaged in automotive electronics or related fields, the ability to quickly assess the operational status of the CAN bus is a very practical skill. Today, we will delve into the normal voltage range of the CAN bus and how to conduct basic fault diagnosis through voltage measurements. 1. Normal Voltage Range of the … Read more

Linux Basics: Network Management

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A Brief Explanation of Several Confusing Points for Beginners <span>ip</span> Command: How to Use It? It is the modern replacement for <span>ifconfig</span>. Think of it as a network toolbox where you just need to specify the object (address, network interface, route, etc.) and the action to perform. <span>ip addr</span> (or <span>ip a</span>): Manage IP addresses. … Read more

Linux Performance Tuning: A Comprehensive Guide to Troubleshooting Memory Issues

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1. Introduction In previous articles, we have discussed the principles of memory, the use of swap, types of caches, and tools for diagnosing memory leaks. Now, we have a basic understanding of memory. When encountering memory issues in work or study, how should we troubleshoot or where should we start? This article mainly discusses the … Read more

Three Ways to Open Douyin Command Links: Tips and Tutorial for Mastering the Method in One Minute

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Three Ways to Open Douyin Command Links: Tips and Tutorial for Mastering the Method in One Minute 1. Understanding Douyin Commands: Features and Use Cases Douyin commands area convenient content sharing mechanism within the Douyin platform, consisting of a specific code or character combination automatically generated by the system. When users see interesting videos, live … Read more