Writing robust firmware for embedded systems often requires rigorous testing and careful validation of assumptions. Unlike desktop software, embedded applications run closer to the hardware and often lack the luxury of an operating system, debugger, or even a screen to inform the developer when something goes wrong. This makes assertions a valuable tool during development—they help catch programming errors early, during test phases, before the code reaches production.
This article explains how to safely and effectively use assert() in embedded systems by tailoring its behavior to the development lifecycle and hardware environment.
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