Summary

This short blog demonstrates how to implement coroutine-like behavior in plain C on a single page. The reader will learn a compact, portable technique to write functions that can yield and later resume while preserving local state, useful for generators and lightweight cooperative concurrency in firmware.

Key Takeaways

• Implement a coroutine-style function in plain C without language-level support or an RTOS
• Preserve function state across yields using simple state variables and control constructs
• Use coroutines to implement generators, event handlers, or cooperative multitasking patterns
• Avoid pitfalls around reentrancy, stack usage, and local scope when adopting coroutine patterns

Who Should Read This

Embedded and firmware engineers (intermediate level) building small-footprint drivers, generators, or cooperative concurrency on microcontrollers who want a lightweight alternative to threads/RTOS.

Still RelevantIntermediate

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