1. FreeRTOS Multitasking Architecture 1.1 Overview of Task Model As a lightweight real-time operating system, the core of FreeRTOS is its multitasking capability. In FreeRTOS, applications are organized as a set of independent tasks, each executing in its own context (such as a separate stack space) without dependencies on each other. Each task can be … Read more
In embedded system development, real-time operating systems (RTOS) are becoming increasingly important. The STM32FreeRTOS library provides Arduino users with an easy way to implement RTOS functionality. This article will delve into the features and usage of STM32FreeRTOS, allowing you to quickly get started with this powerful development tool. What is STM32FreeRTOS? STM32FreeRTOS is a library … Read more
1. Task Scheduling FreeRTOS is a lightweight real-time operating system kernel, and one of its core functions is task scheduling. Task scheduling is the core mechanism of FreeRTOS, determining which task runs at any given moment, when to switch tasks, and how to handle task priorities. 1.1. Task Definition Task “Task” is the basic execution … Read more
MicroPython is a compact Python interpreter specifically designed for microcontrollers and embedded systems. Imagine a world of microcontrollers that once required complex C programming, now being controlled with Python, a simple and friendly language. It’s like giving engineers a VIP pass to the kingdom of smart hardware, lowering the barriers to hardware programming and allowing … Read more
What is a Real-Time Operating System (RTOS) A Real-Time Operating System (RTOS) is an operating system specifically designed for real-time applications. Real-time applications require predictable responses within specific time constraints, so RTOS focuses on providing an emphasis on timing constraints to ensure that the system can meet real-time performance requirements. 1. Real-Time Performance: Hard Real-Time … Read more
Continuing from the previous article, we have already learned about the porting and startup process of FreeRTOS. Today, we will continue to study the task management part of FreeRTOS, starting with understanding what a task is. 1. Task 1.1 Introduction to Tasks (1) In bare-metal systems, we generally use a front-and-back system for development. If … Read more
Have you ever wondered why your HarmonyOS device can do so many things at once? You can receive calls while gaming, and reply to messages while watching videos. The secret behind this is the task scheduling mechanism. This “traffic control system” determines who goes first and who goes later, directly affecting user experience! What is … Read more
We often refer to RTOS (Real Time Operating System) as a real-time operating system, but what exactly is a real-time operating system? Is it truly real-time?This question is likely to be on the minds of many beginners. Brief Overview of RTOS RTOS: Real Time Operating System, which means real-time operating system. According to Baidu Encyclopedia: … Read more
Introduction I wrote this porting guide because a colleague from my WeChat public account asked me to write a tutorial on porting, so I wrote this article at their request. Preparation Before porting, we first need to obtain the official source package of FreeRTOS. Here are two download links: One is the official website: http://www.freertos.org/ … Read more
1. Basic Concepts <span>FreeRTOS</span> (Free Real-Time Operating System) is a lightweight open-source real-time operating system designed for embedded devices. It was developed by <span>Real Time Engineers Ltd.</span> and was acquired by Amazon in 2017, becoming part of Amazon FreeRTOS. FreeRTOS supports various architectures such as <span>ARM Cortex-M</span>, <span>RISC-V</span>, <span>AVR</span>, and <span>MIPS</span>, and is widely used … Read more