#rtos articles | Hashnode

Ccircuitrockscircuitrocks.hashnode.devJul 15 · 2 min read

Porting Apache NuttX to the Adafruit Fruit Jam to Run Doom

The first frame of Doom flickering onto an HDMI monitor is a familiar rite of passage, but this time it ran off a board barely bigger than a credit card. A forum maker known as speccy88 had spent week

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SBSomnath Babu N Rbeyondbits.hashnode.devJun 13 · 6 min read

SPI Explained Beyond MOSI and MISO

Embedded Systems Fundamentals #2 Most engineers learn SPI through a simple diagram: Master ---- Slave MOSI MISO SCLK CS A transfer begins. Bytes move. The transfer completes. Simple. But inside the

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NVNikheel Vishwas Savantfreecodecamp.orgJun 1 · 60 min read

How to Build Bluetooth Applications with Zephyr OS: A Handbook for Devs

Your phone just connected to wireless earbuds, your smartwatch synced health data to an app, and a sensor somewhere in your building reported its temperature to a gateway. All of those interactions ha

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VKVinod Kumar Gorrepatiblog.vinodtech.comOct 31, 2025 · 4 min read

FreeRTOS vs Bare-Metal — When to Choose What (A Practical Guide for Embedded Engineers)

Choosing between FreeRTOS and Bare-Metal is one of the most important architectural decisions you’ll make when starting embedded firmware. It affects performance, power, scalability, debugging complexity, maintainability, and long-term product cost. ...

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박박서경psk-study.hashnode.devSep 15, 2025 · 4 min read

RTOS Hardware Interrupt

Hardware interrupt = a mechanism by which an external/peripheral event immediately interrupts the CPU’s current execution and runs a designated ISR (Interrupt Service Routine).→ Rule of thumb: keep the top half (ISR) short; do the real work in the bo...

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박박서경psk-study.hashnode.devSep 10, 2025 · 3 min read

RTOS – Context Switching and Interrupts

1. What Is Context Switching? A context is simply the state of the CPU while a task is running.This includes: CPU registers (PC, SP, general-purpose registers) Task stack contents Task metadata (priority, name, entry point, etc.) FreeRTOS stores...

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박박서경psk-study.hashnode.devSep 10, 2025 · 6 min read

Introduction to RTOS – Why Do We Need It?

1. Two Types of Operating Systems General Purpose Operating System (GPOS) Examples: Windows, Linux, Android Strengths: user-friendly, supports many apps, rich libraries Weakness: non-deterministic scheduling (you don’t know exactly when a task wi...

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박박서경psk-study.hashnode.devSep 10, 2025 · 3 min read

RTOS – Low-Level Memory Allocation

1. Why Do We Need Special Memory Management? In desktop OSes (Linux, Windows), we use malloc() and free() from the standard C library. But in embedded systems, this approach has limitations: Very limited heap size (often only a few KBs) Real-time r...

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PSPammi Soni | 360iResearch™pammi360.hashnode.devJul 10, 2025 · 4 min read

Leveraging Microkernel RTOS on Multi-Core Heterogeneous Processors for 5G and Edge Computing Excellence

In today’s rapidly evolving telecommunications landscape, the demands placed on computing infrastructure have intensified, particularly with the surge of 5G networks and the growth of edge computing solutions. To meet these demands, cutting-edge tech...

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Aampheoampheoelectronic.hashnode.devJul 7, 2025 · 2 min read

What is the difference between bare-metal and RTOS-based development?

The difference between bare-metal and RTOS-based development lies in how the microcontroller's resources are managed and how tasks are scheduled and executed. Bare-Metal Development Definition: Bare-metal programming means running your application w...

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