Amazon FreeRTOS

What Should You Prepare for an Embedded Software Engineer Interview?

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What Should You Prepare for an Embedded Software Engineer Interview?

1. Define Goals and Positioning You need to choose a direction for your embedded system position based on your current programming skills.2. Prepare Core Embedded Knowledge1. Deep mastery of C languageBasic syntax: variable declaration, control structures, loops, conditional statements.Pointers: the relationship between pointers and arrays, pointers to pointers, dynamic memory allocation.Preprocessor: macro definitions, file inclusion, … Read more

A Comprehensive Comparison of Embedded Development: RTOS vs Bare Metal

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A Comprehensive Comparison of Embedded Development: RTOS vs Bare Metal

In embedded development, the argument of “using RTOS to improve efficiency” is often mentioned, but in actual projects, there is often a counterintuitive phenomenon of “the system becoming slower.” This article clarifies the core differences between RTOS and bare metal from a technical perspective, providing direct decision-making advice in just three minutes. 1. Analysis of … Read more

In-Depth Analysis of Three Major Directions in Embedded Development: Choose the Right Path to Double Your Salary

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In-Depth Analysis of Three Major Directions in Embedded Development: Choose the Right Path to Double Your Salary

In 2025, the embedded talent market will show significant differentiation. Not all embedded engineers can command high salaries. The key lies in the choice of direction. Those who choose the wrong path may find their monthly salary hovering around 12,000 for three years. In contrast, those who select the right track, with the same work … Read more

Understanding Critical Sections in FreeRTOS

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Understanding Critical Sections in FreeRTOS

When it comes to critical sections in FreeRTOS, there are several questions that need to be addressed:1. How is the protection of critical sections implemented?2. What is the relationship with interrupt priority?3. Will masking interrupts affect the operating system’s tick timing and cause a temporary loss of the system clock?With these questions in mind, let’s … Read more

Implementing a Simple FreeRTOS: Core Code Overview

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Implementing a Simple FreeRTOS: Core Code Overview

Introduction: In embedded system development, Real-Time Operating Systems (RTOS) play a crucial role in effectively managing the execution of multiple tasks, enhancing system concurrency and response speed. FreeRTOS, as a widely used open-source RTOS, has core design concepts and implementation mechanisms that are worth in-depth study and learning. To better understand how an RTOS works, … Read more

A Brief Discussion on Real-Time Operating Systems (RTOS)

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A Brief Discussion on Real-Time Operating Systems (RTOS)

01 What is a Real-Time Operating System (RTOS)? A Real-Time Operating System (RTOS) is an operating system designed to serve real-time applications. Such operating systems can quickly respond to and process data, with processing time requirements measured in increments of 0.1 seconds. The results must be able to control production processes or respond quickly to … Read more

FreeRTOS Makefile Explanation

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FreeRTOS Makefile Explanation

Explanation of the Makefile content for the FreeRTOS demo project on Ubuntu: 1. Tool Definition Section PREFIX = arm-none-eabi- CC = $(PREFIX)gcc CXX = $(PREFIX)g++ AS = $(PREFIX)gcc -x assembler-with-cpp LD = $(PREFIX)g++ OBJCOPY = $(PREFIX)objcopy OBJDUMP = $(PREFIX)objdump SIZE = $(PREFIX)size GDB = $(PREFIX)gdb Defines the prefix for the cross-compilation toolchain and various tools … Read more

Advantages, Disadvantages, and Typical Scenarios of VxWorks in Real-Time Applications

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Advantages, Disadvantages, and Typical Scenarios of VxWorks in Real-Time Applications

In the world of embedded systems and mission-critical devices, Real-Time Operating Systems (RTOS) are the core foundation of reliable computing. Among numerous RTOS options, VxWorks, developed by Wind River Systems, has become one of the most trusted and commercially successful solutions due to decades of development. History of VxWorks Timeline of VxWorks Development Figure: The … Read more

Analysis of FreeRTOS Queues

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Analysis of FreeRTOS Queues

1. Introduction to Queues A queue is a mechanism for data exchange between tasks, tasks and interrupts, and interrupts and tasks. Based on queues, FreeRTOS implements various functionalities such as queue sets and semaphores. All communication and synchronization mechanisms in FreeRTOS are based on queues. Queues have the following characteristics: 1.1. Data Storage Queues can … Read more

Beginner’s Guide to Learning Embedded Systems

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Beginner's Guide to Learning Embedded Systems

Embedded systems are a core component of modern technology, widely used in smart homes, industrial control, automotive electronics, medical devices, and more. For beginners, mastering embedded development requires a systematic learning path. 1. Basic Preparation Stage (1-2 months) Fundamentals of Electronic Circuits Master basic circuit components: resistors, capacitors, inductors, diodes, transistors, etc. Understand the basics … Read more