本文详细介绍如何使用树莓派和一条7美元的HDMI线缆解决家庭影院系统中常见的HDMI-CEC设备协同问题。作者通过分析HDMI-CEC协议的工作原理,发现游戏主机等设备在唤醒电视后无法自动激活音响系统,导致音频输出仍停留在电视扬声器。解决方案是在媒体机柜中部署树莓派,通过监听CEC总线并模仿Apple TV的正确行为,自动向音响系统发送激活指令。文章提供了完整的实施步骤,包括设备拓扑规划、CEC总线监控、Python脚本编写和系统服务配置。这一方案不仅解决了设备间的兼容性问题,还避免了传统自动化方案带来的延迟,为家庭影院爱好者提供了一个高效、经济的技术解决方案。
原文链接:Hacker News






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