Source | Mculover666 To develop “advanced” applications based on RTOS, many principles of the kernel must be mastered. This article will explain how the RTOS kernel manages interrupts? How should users write interrupt handler functions? And how can users set critical sections? 1. Review of Knowledge — Interrupts 1.1. Interrupt Mechanism The interrupt mechanism is … Read more
Follow our official account to never miss an update! Many friends who have been using bare-metal programming for a long time may have misunderstandings about many concepts when switching to learn RTOS. 1Introduction Most people do not understand some concepts in RTOS when they start learning real-time operating systems. They are often confronted with concepts … Read more
Follow+Star Public Account Number, don’t miss exciting content Author | strongerHuang WeChat Public Account | strongerHuang I recently saw a discussion in a technical group about whether to read the RTOS kernel source code. From the perspective of someone who has been there, I would say: it is not necessary, I do not recommend reading … Read more
Follow+Star Public Account Number, don’t miss wonderful content Author | strongerHuang WeChat Public Account | strongerHuang Students who have a deep understanding of RTOS principles or have read RTOS source code should know: RTOS implements inter-task communication usually by a series of pointers. The “effective data” of inter-task communication is actually implemented by pointers pointing … Read more
Follow+Star public number, don’t miss wonderful content Author | strongerHuang WeChat public account | strongerHuang Everyone knows that RTOS (Real Time Operating System) is a real-time operating system. So what exactly is a real-time operating system? Is RTOS really real-time? I believe many beginners have such doubts. What is RTOS RTOS:Real Time Operating System, which … Read more
When learning the principles of operating systems, you will come across terms like “time slice”, “preemptive”, and “real-time”, which many people may not fully understand, even after studying or working in operating system development. Ultimately, it comes down to not grasping some basic principles of operating systems. This article aims to address similar questions that … Read more
As a pioneer and innovator in RTOS, the author shares a very clear viewpoint: Many engineers feel that all RTOS options are similar when choosing an RTOS, and believe that some lightweight kernel abstractions can meet the major demands for safe and reliable systems today. This thought is fundamentally flawed. No company or project team … Read more
Embedded System Software An embedded system is a computer system designed for specific applications, and its architecture has developed alongside the gradual application of embedded systems. The design of embedded software architecture is closely related to the architecture of embedded systems. The following case studies will help understand the relevant architecture diagrams of embedded software. … Read more
Follow Arm Technology Classroom by clicking the card below This article is authorized to be transferred from the WeChat public account Embedded Column. This article mainly shares the implementation of simple Asymmetric Multi-Processing (AMP) core-to-core communication using FreeRTOS message buffers, taking the STM32H7 (M4 and M7) dual-core processor as an example. 1. Overview The communication … Read more
In business, “must” represents the minimum requirements for market participation. Today, there are over a hundred open-source and commercial RTOS in the embedded market, most of which lack functional safety certification. Given this, it is clear that RTOS functional safety certification is not yet a “must” today, but perhaps it should be. RTOS is the … Read more