What are Bit Fields? Imagine you need to store a switch variable that can only be on (1) or off (0). Using a full int (typically 4 bytes, 32 bits) would waste 31 bits of space. Bit fields (also known as “bit segments”) were created to solve this waste. They allow you to partition the … Read more
C Language Experience Discussion (Part 7): Array Out-of-Bounds, the Number One Killer of Memory Safety 📌 Application Scenarios & Problem Description Array out-of-bounds is the most common and dangerous memory safety issue in C language. In scenarios such as “string processing”, “buffer operations”, and “dynamic array management”, a slight oversight can lead to accessing memory … Read more
“ This article is compiled based on the C programming course taught by Professor Weng Kai from Zhejiang University on the China University MOOC platform. Preparation Correctly Displaying Chinese on Windows To compile C programs on Windows, you can install Dev-C++ (recommended) or MinGW (Minimalist GNU for Windows). General compilation command: gcc -o foo foo.c … Read more
After writing a program in C language to determine the odd or even nature of an integer yesterday, I suddenly thought: since we can determine odd or even, can we also use C language to determine if an integer is a prime number? A prime number, also known as a prime, is an integer that … Read more
Click the above to select“Pin/Star Public Account” Welfare and valuable content delivered first-handHello everyone, I am Mai Ge.In embedded development, especially in os-less microcontroller programs, the most common mistake is the rampant use of global variables.This phenomenon is often seen among programmers transitioning from early assembly language and beginners, who tend to treat global variables … Read more
Recommended reading: C Language Learning Guide: Have you mastered these core knowledge points? C Language Pointers: From Beginner to Proficiency, a comprehensive article to thoroughly understand C Language Dynamic Memory Management: From Beginner to Proficiency, a comprehensive article to thoroughly understand C Language File Operations: From Beginner to Proficiency, a comprehensive article to thoroughly understand … Read more
1. Concept of Modular Design How can we improve the flexibility and maintainability of embedded programming? This is a long-term learning process for us embedded software developers. The design of embedded systems requires high flexibility and maintainability. Modular design, as an important software engineering method, can effectively enhance the development efficiency, code reusability, and maintainability … Read more
Source: Technology Makes Dreams Greater Author: Li Xiaoyao Concept of Modular Design How to improve the flexibility and maintainability of embedded programming? This is believed to be a long-term learning process for us in embedded software development. The design of embedded systems requires high flexibility and maintainability. Modular design, as an important software engineering method, … Read more
Discussion: How to Use Mio Asynchronous Timer? Official documentation There are no example codes, making it difficult to understand how to use it Someone provided an answer in the replies extern crate mio; extern crate mio_extras; use mio::*; use mio_extras::timer::{Timer, Builder}; use std::time::Duration; fn main() { const TIMER: Token = Token(2); let poll = Poll::new().unwrap(); … Read more
Clickthe blue text Follow us This article mainly describes the basic usage of CMake. In previous documents, I covered two build tools, Makefile and Autotools. Related articles are as follows: “What is Makefile on Linux?” “What knowledge should you know before working with Makefile?” “Practical examples of Makefile” “Compiling with Autotools and Yocto” Previously, I … Read more