Liangxu Linux

May 19, 2021 · Fundamentals

Understanding Linux NEC Infrared Remote Drivers: From Protocol Basics to Kernel Implementation

This article explains how infrared remote controls work, details the NEC protocol timing and encoding, and walks through the Linux kernel driver implementation—including GPIO‑IR receiver code, NEC decoder logic, device‑tree configuration, and key‑event reporting—providing a complete technical guide for developers.