Are you still troubled by scheduling tasks for your Python scripts? Complicated configurations, lengthy code, and a lack of visual monitoring can leave you overwhelmed. Plombery may change your perception of Python task scheduling, leading you into a new world that is efficient, convenient, and visual! 1. What is Plombery? Plombery is a simple and … Read more
Concepts and Characteristics of Embedded Systems Embedded Systems are specialized computer systems that are embedded within larger devices or systems to perform specific functions. In Internet of Things (IoT) systems, embedded systems act like neural nodes, playing a crucial role in various fields such as smart homes, industrial control, smart energy, intelligent transportation, and smart … Read more
In embedded system development, the choice of microcontroller programming framework is crucial as it directly affects the system’s efficiency, real-time performance, and maintainability. Below are several common microcontroller programming frameworks and their characteristics: 1. Polling without Interrupt FrameworkCharacteristics: All tasks are executed in a fixed order without an interrupt mechanism.Applicable Scenarios: Simple applications with low … Read more
RTOS (Real-Time Operating System) Real-Time Characteristics: The ability to respond to external events and execute tasks within a specified time frame, such as in industrial control, ensuring precise timing for sensor signal acquisition and actuator control operations, thereby maintaining the stable and efficient operation of automated production lines. Task Scheduling Mechanism: Understanding preemptive scheduling (where … Read more
Hello everyone, welcome to <span>LiXin Embedded</span>. FreeRTOS V11.0 provides support for Symmetric Multi-Processing (SMP) on multicore systems. Previously, multicore development often required using various branch versions of FreeRTOS, which was quite cumbersome. Now, V11.0 integrates SMP directly into the mainline, allowing seamless switching between single-core and multicore. Today, we will discuss how to apply this … Read more
In operating systems, task scheduling is a crucial concept. It determines how multiple processes or threads share CPU resources. In this article, we will introduce two common task scheduling algorithms: Round Robin Scheduling and Priority Scheduling. We will demonstrate the implementation of these two algorithms through C language code examples. 1. Round Robin Scheduling 1.1 … 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
1. Interrupt Priority <span>Cortex-M</span> series cores (such as <span>M3/M4/M7</span>) use the <span>NVIC</span> (Nested Vectored Interrupt Controller) to support interrupt nesting and priority management. It employs a grouping mechanism that divides interrupt priority into two parts: Preemption Priority: Determines whether the current interrupt can interrupt other interrupts. Subpriority: Determines the response order when preemption priorities are … Read more
Core Value of Priority Queue The <span>priority_queue</span> container adapter in the C++ Standard Library provides an efficient way to maintain a priority data structure. This article will delve into its core features and demonstrate its applications in system design and algorithm optimization through practical examples. Basic Usage Analysis #include <iostream> #include <queue> int main() { … Read more
<span>at</span> is a command-line tool used to automatically execute various commands or scripts at a specified time and date. Tasks created with <span>at</span> are executed only once, making it an ideal tool for managing one-time tasks at precise time points. This article will introduce how to use <span>at</span> along with its companion tools <span>batch</span>, <span>atq</span>, … Read more