Task Management

FreeRTOS Operations and Applications – Part One

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FreeRTOS Operations and Applications - Part One

In today’s embedded systems development field, the application of Real-Time Operating Systems (RTOS) is becoming increasingly widespread, providing solid support for various complex task scheduling, resource management, and system reliability requirements. As an open-source real-time operating system, FreeRTOS stands out in numerous embedded projects across various industries due to its simplicity, efficiency, ease of portability, … Read more

Writing a Real-Time Embedded Operating System Kernel in C

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Writing a Real-Time Embedded Operating System Kernel in C

Creating content is not easy, if convenient, please follow, thank you This article is based on a thorough review of authoritative literature and materials, forming professional and reliable content. All data in the full text can be referenced and traced back. Special note: Data and materials have been authorized. This article does not involve any … Read more

Considerations for RTOS Task Stack Allocation

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Considerations for RTOS Task Stack Allocation

Follow+Star PublicAccount, don’t miss the wonderful content Author | strongerHuang WeChat Public Account | Embedded Column Some friends asked this question: Do I need to allocate a large stack for a task with a lot of code? Actually, it’s not that the more code there is, the more stack space needs to be allocated. It … Read more

In-Depth Analysis of RTOS Scheduler

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In-Depth Analysis of RTOS Scheduler

Autosar OS – Task Management Autosar – OS Scheduler Strategies After reading the above two articles, I believe everyone has a profound understanding of the scheduler and task switching, mastering the operating principles of the scheduler, but there may still be some questions regarding details. For example: how does a task enter the ready state? … Read more

The Challenge of Mutex in RTOS Tasks

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The Challenge of Mutex in RTOS Tasks

Author | strongerHuang WeChat Official Account | Embedded Column When developing projects based on RTOS, it is common to encounter mutual exclusion situations, for example: multiple tasks need to use a single UART serial port for data transmission. If mutex locks are not added, a higher priority task may preempt the serial port and send … Read more

How to Learn an Embedded System?

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How to Learn an Embedded System?

This is a document I found online, where the author’s goal is to design a simple embedded operating system that implements a basic task scheduler. As the author mentioned, although it cannot be called an operating system, it embodies the essence of a small embedded operating system. This serves as excellent learning material for us, … Read more

How to Use Startup Scripts in VxWorks

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How to Use Startup Scripts in VxWorks

How to use the startup script in VxWorks is something everyone should know. Here’s an example: Need to define the following two macros: #define INCLUDE_SHELL #define INCLUDE_STARTUP_SCRIPT Called in usrConfig.c: #ifdef INCLUDE_STARTUP_SCRIPT usrStartupScript (startupScriptFieldSplit (sysBootParams.startupScript)); #endif There might be an issue with devices like sata/sd/usb not working. The reason is that this function is executed … Read more

FreeRTOS Operating System: A Comprehensive Guide

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FreeRTOS Operating System: A Comprehensive Guide

The manual porting process is complex and tedious. First, use cubemx for quick configuration: First, print a message to the serial port: /* USER CODE BEGIN 2 */ printf("hello shxi\r\n"); /* USER CODE END 2 */ /* Call init function for freertos objects (in freertos.c) */ MX_FREERTOS_Init(); OK proves that the configuration is correct! Tasks … Read more

Understanding RTOS Operation Mechanism Through Video Tutorials

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Understanding RTOS Operation Mechanism Through Video Tutorials

In this video tutorial, we will understand the **RTOS** operation mechanism, task management, and task switching from an application perspective. We strive to provide a rich visual experience, as good graphical analysis greatly aids in understanding **RTOS**. In this video, we adopt a step-by-step approach to clarify the operation mechanism of **RTOS**. Tencent Video: Bilibili … Read more

Optimal Stack Size for RTOS Task Allocation

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Optimal Stack Size for RTOS Task Allocation

Follow+Star Public Account, don’t miss out on exciting content Author | strongerHuang WeChat Public Account | strongerHuang Many students have such doubts: How much stack space should I allocate when creating a task? If one of my tasks has a larger code size, should I allocate more stack space? Below, I will describe the relevant … Read more