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      <title>BeagleBone Black 开发笔记：串口 TCP 数据采集与 GPIO 告警控制</title>
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      <description>记录使用 BeagleBone Black 实现串口服务器 TCP 数据采集、屏幕输出及 GPIO 控制红黄绿灯的开发过程，分享踩坑经验与解决方案。</description>
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