In the C language, macro definitions are a very powerful tool that can help us simplify code, improve readability, and maintainability. This article will detail macro definitions in C, including their basic concepts, usage methods, and some common application scenarios. What is a Macro Definition? A macro definition is a preprocessor directive used for text … Read more
Click the blue text above: IoT Guesthouse to follow us In embedded C language interviews, in addition to basic syntax and data structures, some advanced features such as macro definitions, storage classes, and type modifiers will also be emphasized. These knowledge points not only test your mastery of syntax but also your understanding of the … Read more
Hello everyone, I am the Mixed Bag Master. queue.h is a header file in Linux and FreeBSD. FreeBSD: FreeBSD is a UNIX-like operating system. This is a very practical header file because it contains all macro definitions, making it usable not only in Linux/Embedded Linux projects but also conveniently in microcontroller projects. It implements the … Read more
The C language is essential foundational knowledge in microcontroller development. This article lists some basic C language knowledge points encountered while learning STM32, hoping to be helpful to everyone. 01 Bit ManipulationNext, we will explain several bit operators and then discuss techniques for using bit manipulation. The C language supports the following six bit operations:Six … Read more
In some exam questions, macro definitions as shown in the following images often appear. Are these macro definitions correct? They are definitely wrong! This has caused considerable trouble for teaching and students when solving problems. This article will analyze the relevant knowledge of macro definitions, the side effects caused by similar errors, and provide guidance … Read more
1. A pipeline can achieve maximum efficiency only when it is filled with instructions, meaning that one instruction is executed per clock cycle (this refers only to single-cycle instructions). If a jump occurs in the program, the pipeline will be cleared, and it will take several clock cycles to refill the pipeline. Therefore, minimizing the … Read more
Relationship Between .h Files and .c Files When referring to the programs of experts, I found that the strict programs written by others all include a “KEY.H” file, which defines the functions used in the .C file, such as Keyhit() and Keyscan()..H files are header files, probably meaning ‘Head’, which is necessary for structured design … Read more