1. Basic Concepts In the context of the entire microcontroller program, we refer to it as an application. When using FreeRTOS, we can create multiple tasks within the application; some documents refer to tasks as threads. For example, in daily life, a mother may need to do two things at the same time: Feeding: This … Read more
As the command center for Jihua Railway, road, and waterway transportation, the ‘nervous center’ of the Railway Transportation Department (Logistics Company) Transportation Scheduling Room is primarily responsible for the organization, scheduling, and control of cargo transportation, ensuring transportation safety, and improving transportation efficiency. It serves as the ‘ballast’ for ensuring the safe and stable operation … Read more
What is Pod Priority in Kubernetes? Pod priority is a scheduling feature in Kubernetes that allows Kubernetes to make scheduling decisions based on priority numbers by comparing other pods. Let’s take a look at the following two main concepts in pod priority. Pod Preemption Policy Pod Priority Pod Preemption Policy The pod preemption policy allows … Read more
In FreeRTOS, Cooperative Scheduling and Preemptive Scheduling are two different task scheduling algorithms. The core difference between them lies in the triggering mechanism for task switching and how task priorities are handled. 1. Cooperative Scheduling 1.1 Concept Cooperative Scheduling is a non-preemptive scheduling algorithm. In cooperative scheduling mode, task switching only occurs when a task … Read more
Dian Dian Xia wants to learn about RTOS, but doesn’t know where to start, sigh.Real-Time Operating Systems? I’m familiar with them, let me explain slowly.Ke Ke Jun Real-Time Operating Systems (RTOS) are widely used in consumer electronics, entertainment products, home appliances, industrial equipment, medical instruments, military weapons, and scientific research equipment. They play a critical … Read more
1. What Is the Task State Machine Model? The task state machine model describes the lifecycle and state transitions of a task. Typical states include: (1) Ready: The task can execute but is waiting for the scheduler to allocate CPU. (2) Running: The task is currently using the CPU to execute. (3) Blocked: The task … Read more
Last night, I tossed and turned in bed again, my mind filled with unfinished study tasks and upcoming exams. Suddenly, an idea flashed through my mind: it would be great to have a thoughtful study assistant to help me organize my time! Wait, I can write Python, can’t I? Why not do it myself and … Read more
Embedded operating systems sound quite impressive, but in fact, they are just a streamlined version of an operating system, specially tailored for embedded devices. Today, let’s talk about a particularly interesting embedded operating system – the one based on priority cooperative scheduling. It’s a bit like a well-organized small team, where each member has their … Read more