0 Introduction Recently, I encountered a situation where the ROM size was quite tight, and the code size was too large, resulting in the inability to fit all the code into the ROM. I had to optimize the C code line by line. During the optimization process, I noticed that in previous cases, some frequently … Read more
Preprocessor and #define Directive Basic Concepts Preprocessor: A program that processes source code before compilation #define: A preprocessor directive used to create symbol constants or macros How it Works: Similar to a global search and replace, but only processes independent tokens Code Example #include <iostream> #include <climits> // Includes definitions for symbol constants like INT_MAX … Read more
In assembly language, constants are immutable values used within a program. NASM provides various methods to define constants, which are replaced with their corresponding values at compile time and do not occupy memory space. Constant Definition Instructions 1. EQU Directive The EQU directive is used to define constants that cannot be redefined. Syntax: CONSTANT_NAME EQU … Read more
Introduction System boot failures are not frequent, but after enough attempts, even low-probability events can occur. Although having a Ventoy multi-boot USB drive makes system installation a breeze, when a system fails, reinstalling is often easier than repairing it. However, occasionally exploring the repair process can be a valuable learning experience. Interestingly, this time the … Read more
According to Mobile Payment Network: The combination of AI Agents and stablecoins is receiving widespread attention. Michael Novogratz, former partner at Goldman Sachs and founder and CEO of Galaxy Digital, predicted in a recent interview that within the next five years, AI Agents will become the largest users of stablecoins, which will significantly drive the … Read more
It has always been said that the waveform from the oscilloscope can analyze engine faults, but how can one determine that this motorcycle belongs to a non-Asian electronic fuel injection (EFI) system just from a single waveform image? With the “correct” waveform data, a repair technician can pinpoint the fault within ten minutes, avoiding the … Read more
In the C language, <span>#define</span> and <span>const</span> can both be used to define constants, but they have significant differences in implementation mechanisms, usage, and characteristics. 1. <span>#define</span> Macro Definition <span>#define</span> is a preprocessor directive used to define macro constants (or symbolic constants), which replaces all occurrences of the macro name in the code with the … Read more
Author: Joey Prebys If DeFi aims to fundamentally change the financial system, why does it still have a high barrier to entry for users? As the number of wallets and TVL data continues to rise, DeFi remains a confusing experiment for many, is this meaningful adoption? True adoption goes beyond charts and statistics; it is … Read more
Content Hello everyone, I am Bug Jun~In industrial communication and embedded development, RS485 has become one of the mainstream buses due to its high anti-interference capability and multi-node support. However, many engineers often confuse two key signals when debugging RS485: DE and RTS. They both appear to be “control send” signals, and in some circuits, … Read more
What is the SIMD 228 proposal? This article will clarify it for you. If we compare Solana to a company, then SOL stakers are the “employees” of this company, maintaining network security by staking SOL in exchange for “salary” (staking rewards) issued by the system. The SIMD 228 proposal essentially announces: The salary distribution mechanism … Read more