Click the above“Mechanical and Electronic Engineering Technology” to follow us In Linux system programming, a Static Library is a compiled code library that contains a collection of multiple compilation units (such as functions and data) that can be shared by multiple programs. Static libraries typically have the file extension .a. Creating a Static Library Compile … Read more
#include “stdafx.h” #include<stdio.h> #include<stdlib.h> #include<string.h> // Whether to enable DEBUG mode //#define _DEBUG_ 0 // Not enabled #define _DEBUG_ 1 // Enabled #if _DEBUG_ #define PRINTF(…) printf(__VA_ARGS__) #else #define PRINTF(…) #endif int main() { int a, b, c; b = 1; c = 2; a = b + c; PRINTF(“a = %d\n”, a); getchar(); return … Read more
Click the above “Chuangxue Electronics” to follow and easily learn electronic knowledge. Chuangxue Electronics Subscription Daily updates of technical articles in the electronics industry and the latest news on microcontrollers, learn easily anytime, anywhere. Here are some issues encountered in mixed programming of C language and assembly language in Keil, written down for future reference. … Read more
It must be said that Keil seems to be the most widely used IDE among domestic users. After being acquired by ARM, the introduction of the Keil MDK development environment with ARMCC and other compilers has been well received by many ARM development engineers. The large user base (many of whom have transitioned from the … Read more
1. NPT is a general-purpose American standard tapered pipe thread with a thread angle of 60°. PT thread is a British standard tapered thread with a thread angle of 55°, commonly used for sealing. British pipe threads are fine threads; coarse threads have a larger thread depth, which severely reduces the strength of the external … Read more
Introduction Recently, I prepared to implement a virtual serial port driver in Linux; however, since graduation, I have been engaged in bare-metal driver development, and thus I have gradually forgotten about device drivers in Linux. To achieve this functionality, I have searched for a lot of information online, but most of it only explains the … Read more
History of C Language Development The world originally had no computers; engineers created them out of necessity for their work. To inform the normal operation of computers, engineers invented programming languages. As the C language exam approaches, are you feeling as frantic and furious as I am? Today, let’s learn about the history of C … Read more
Interoperability Between C Language and ARM Assembly Language 1. Accessing C Language Global Variables from Assembly Global variables can only be accessed indirectly through their addresses. To access global variables in C, you must first introduce the global variable using the extern directive, and then load its address into a register. For unsigned char type, … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join the technical exchange QQ group with 1000 members. Note 【Official Account】 for quicker approval. 1. In-Depth Understanding of Basic Process Concepts Textbook Concept: An execution instance of a program, a program that is currently executing, etc. Kernel Perspective: An entity responsible for … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our 1000-member tech exchange QQ group, note 【public account】 for faster approval 1. Classic Review of C File Interfaces When using C, we typically use functions like fopen, fwrite, fread, and fclose to access files. 1.2 fwrite For example, I need to … Read more