Comprehensive Analysis and Explanation of Linux I2C Device Drivers 1 I2C Hardware Basics and Protocol Overview The I2C (Inter-Integrated Circuit) bus was developed by Philips Semiconductors (now NXP) in the 1980s. It is a simple, bidirectional, synchronous two-wire serial bus widely used to connect microcontrollers and their peripherals. Understanding the hardware basics of I2C is … Read more
“The Process of Single Board DIY” 1. Concept Stage 2. Schematic Design 3. PCB Design 4. Board Debugging — To Conclude — “The Process of Single Board DIY” 1. Concept Stage When starting with hardware DIY, it is advisable to find some interesting mature cases to imitate. During the replication process, strive to understand the … Read more
(Some of these entries only consider usability and do not take optimization into account; use with caution in production environments.)1. C++ Universal Header (*Only usable with the GCC compiler)#include<bits>**Recommended only for competitive programming; otherwise, it may lead to unpredictable issues.2. Improve yourself by practicing on Luogu’s theme library; for exams, use Luogu’s beginner and interview … Read more
Introduction: An HTTP request command line client implemented in Python, which I understand as the Python version of curl, but it offers more user-friendly and easier-to-use commands and options. HTTPie is an HTTP command line tool implemented in Python that provides more human-friendly and interactive commands and options, which can be used for testing, debugging, … Read more
1 When debugging a program in an integrated development environment, it is important not to modify the source code, because if modifications are made, debugging must be terminated, the file closed, and reopened to start debugging again. ( ) This statement is judged as ×. 【Analysis】 In modern integrated development environments (such as Visual Studio, … Read more
Linux Memory Leak Analysis In Linux system administration, a memory leak is a common performance issue that can lead to resource exhaustion, performance degradation, or crashes. A memory leak refers to memory allocated by a program that is not properly released, gradually accumulating and occupying memory. According to the official Valgrind report, memory leaks account … Read more
How to Run Python Scripts? A Step-by-Step Guide with 2 Methods for Beginners! 💻 After writing Python code, how do you get it to run? It’s actually super simple! Whether it’s the “right-click” method for beginners or the “terminal command” method for professionals, newcomers can learn both in just one minute! Both methods are taught, … Read more
Part One: Overview of Program Control Structures 1.1 What is Control Flow In programming, control flow refers to the order in which instructions are executed in a program. By default, a program executes line by line from top to bottom in the order the code is written, which is known as sequential structure. However, real-world … Read more
Are you eager to gain a deep understanding of the underlying operations of embedded systems? Are you tired of the constraints of frameworks and want to control every detail of the microcontroller? Then, this comprehensive bare-metal programming guide open-source project will take you on an exciting journey into embedded programming! 1. Why Choose Bare-Metal Programming? … Read more
Technical experience sharing, welcome to follow and provide guidance. I briefly introduced KASAN in my article “Debugging Memory Leaks in the Kernel”. At that time, my understanding of the implementation principles of KASAN was still shallow. Recently, I plan to comprehensively learn and understand KASAN, and then consolidate my memory by writing this series of … Read more