The following article is a summary of common knowledge in Shell programming, covering syntax and techniques. 1. Basic Concepts of Shell 1. Introduction The Shell is a command-line interpreter, an interface for users to interact with the kernel, receiving user-input commands and invoking system functions for execution. The Shell is loaded into memory when logging … Read more
Choosing and Using C Language Code Editors In the process of learning C programming, selecting the right code editor is crucial. A good editor can not only enhance your coding efficiency but also help you better understand and debug your code. This article will introduce several common C language code editors and their usage methods, … Read more
C Language Interview: Code Debugging and Error Handling In the software development process, debugging and error handling are crucial steps to ensure code quality. Especially in job interviews, examiners often assess candidates’ understanding of code debugging and error handling to evaluate their capabilities. This article will detail the basic debugging techniques and error handling methods … Read more
Debugging Techniques for C Language Code: Using GDB Debugging is an essential skill for any programmer, and in C language, the GNU Debugger (GDB) is one of the most commonly used debugging tools. This article will introduce you to how to effectively use GDB to debug C language programs. What is GDB? The GNU Debugger … Read more
Background Introduction In embedded systems, UART serial ports are commonly used for debugging and communication. Typically, there are no specific requirements for the baud rate of the debugging serial port, with a common configuration being 115200 8N1. Besides debugging, UART serial ports can also serve as data communication interfaces for interconnecting with other boards or … Read more
Using serial ports to print debugging information is a common debugging method, known for its simplicity and ease of use, but it also has significant limitations:– It does not support advanced features such as breakpoints, single-step tracing, and memory read/write.– Excessive printed debugging information can impact performance, while too little information may be insufficient to … Read more
Application Overview Hey friends, today we are going to talk about a super cool project—the Edge AI Siemens PLC Autonomous Driving Testing System! Doesn’t it sound exciting? I’ve been thrilled for a long time because this is a model that combines cutting-edge AI technology with classic PLC control! The purpose of this project is to … Read more
Ansible Variables • Ansible variables are case-sensitive • Ansible variables should not have duplicate names, especially not conflict with built-in variables • Ansible variable names can consist of numbers, letters, and underscores, but must start with a letter Connection Variables Connection variables are built-in variables in Ansible that control how Ansible connects to managed hosts. … Read more
Introduction curl is a powerful command-line tool for network transfer operations over protocols like HTTP, supporting scripted HTTP requests and providing a rich set of options for users to customize requests and handle responses. Today’s article in the Frontend Morning Reading Course is shared by @Daniel Stenberg and translated by @Piao Piao. The translation starts … Read more
Hello everyone, today we are going to discuss a topic that is both frustrating and rewarding in the industrial field—how to make the “old gentleman” Modbus and the “modern youth” TCP/IP shake hands and make peace. Last year, while debugging a sewage treatment plant project, I encountered a “generation gap” issue between these two protocols, … Read more