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Round-robin or RTOS for my embedded system

Round-robin or RTOS for my embedded system

Manuel Herrera
Still RelevantIntermediate

First of all, I would like to introduce myself. I am Manuel Herrera. I am starting to write blogs about the situations that I have faced over the years of my career and discussed with colleagues.To begin, I would like to open a conversation...


Summary

Manuel Herrera's blog discusses the decision between using a simple round-robin (superloop) architecture and adopting an RTOS for embedded projects. Readers will learn the practical trade-offs in timing, complexity, determinism, and maintainability to help choose and plan an implementation strategy for real-time embedded DSP and control applications.

Key Takeaways

  • Evaluate the trade-offs between superloop simplicity and RTOS determinism based on timing requirements and system complexity.
  • Estimate latency, jitter, and context-switch overhead to decide if hard or soft real-time constraints demand an RTOS.
  • Plan a migration path: outline modularization, interrupt handling, and inter-task communication when moving from round-robin to RTOS.
  • Measure and budget CPU, memory, and ISR costs to ensure chosen architecture meets performance and maintainability goals.

Who Should Read This

Embedded and DSP engineers (early-to-mid career) responsible for designing or maintaining real-time firmware who must choose between a superloop and an RTOS for timing-critical systems.

Still RelevantIntermediate

Topics

Real-Time DSPControl Systems

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