AR synchronization

AWStudio: Easily Set Up EtherCAT Distributed Clocks to Enhance Synchronization Accuracy!

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AWStudio: Easily Set Up EtherCAT Distributed Clocks to Enhance Synchronization Accuracy!

Video Recommendations In an EtherCAT system, ensuring the clock synchronization of all slave devices is crucial for achieving precise control. In this issue, we will explore how the AWStudio Motion Control version addresses clock inconsistency issues through a distributed clock synchronization mechanism, enhancing the system’s synchronization performance. Clock Synchronization Issues in EtherCAT SystemsEtherCAT does not … Read more

Bilibili C++ Interview: Differences Between Mutex and Spin Lock, and Their Use Cases

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Bilibili C++ Interview: Differences Between Mutex and Spin Lock, and Their Use Cases

In multithreaded programming, synchronization mechanisms are essential for ensuring safe access to shared resources.Mutexes and Spin Locks, as the two most classic types of locks, are widely used in various systems and frameworks.This article will comprehensively analyze the differences between the two from the perspectives of underlying implementation principles, waiting strategy differences, performance overhead analysis, … Read more

In-Depth Analysis of the Exclusive Mechanism in Arm v8/v9

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In-Depth Analysis of the Exclusive Mechanism in Arm v8/v9

Click the card below to follow Arm Technology Academy This article is selected from the “Arm Selection” column of Jishu, authorized to be reprinted from the WeChat public account Arm Selection. The author is ctw, who believes that code changes the world. This article will guide you through the knowledge related to the exclusive mechanism. … Read more

What is the Purpose of Immediate Transmit in Local Wake-up of ECU

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What is the Purpose of Immediate Transmit in Local Wake-up of ECU

The core purpose of local wake-up (such as KL15 power-on or sensor trigger) directly entering the Immediate Transmit State is to achieve rapid network-wide collaborative wake-up through high-frequency NM messages that seize the bus. The specific design logic is as follows: 1. Core Purpose Accelerate Network Synchronization The ECU that wakes up locally acts as … Read more

Understanding Priority Inversion in FreeRTOS: What Is It and How to Solve It?

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Understanding Priority Inversion in FreeRTOS: What Is It and How to Solve It?

Imagine a scenario in a busy office building waiting for an elevator: Low-Priority Person: A visitor in no hurry (low-priority task) enters the elevator and presses a button for a high floor. Medium-Priority Person: At this moment, a manager in a hurry for a meeting (medium-priority task) also enters the elevator. High-Priority Person: Suddenly, the … Read more

Technical Explanation of Processor Control Instructions in Assembly Language

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Technical Explanation of Processor Control Instructions in Assembly Language

1. Overview Processor control instructions are used to directly manage the core state and behavior of the CPU, rather than performing data calculations or transfers. Their functions include setting flags, executing no-operations, synchronizing with coprocessors, and implementing atomic operations in multiprocessor environments. These instructions are fundamental for writing robust and efficient low-level code, especially when … Read more

The Ceiling of C++ Thread Synchronization: An Advanced Journey from std::mutex to Condition Variables

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The Ceiling of C++ Thread Synchronization: An Advanced Journey from std::mutex to Condition Variables

Click the “C++ Players, please get ready” button below, select “Follow/Pin/Star the public account” for valuable content and benefits, delivered to you first! Recently, some friends mentioned they did not receive the daily article push, which is due to WeChat changing its push mechanism, causing those who did not star the public account to miss … Read more

Overview of SoC Reset Tree Design

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Overview of SoC Reset Tree Design

1. Introduction The design of the reset tree for SoC (System on Chip) is a critical aspect that ensures the chip can reliably start and recover under various conditions. The reset tree, as a crucial yet often overlooked infrastructure within the SoC, is responsible for safely, reliably, and orderly transmitting reset signals generated externally or … Read more

Introduction to FreeRTOS Basics Part Six

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Introduction to FreeRTOS Basics Part Six

Following the previous section, when we use global variables to implement synchronization and mutual exclusion, it is as follows:When the if condition is met, the task switches, and printf may not print completely, so we need to introduce a queue.First, let’s look at a few definitions. Queue (First In First Out) Understanding a queue is … Read more

Understanding C Language Rules to Avoid Code Issues

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Understanding C Language Rules to Avoid Code Issues

We have a product that requires LED lights to flash in sync. The area controller (in an STM32 microcontroller environment) sends wireless signals based on GPS signals to control the start time of the light flashes, achieving synchronization. A colleague implemented a function to send wireless signals, similar to the following: int RS232_lora_sendAlignInfo(void){ uint8_t send_buf[] … Read more