装完包，先别急着写代码，先做一个最基础的编译验证。 在 Arduino IDE 里选好板子后，找到 文件 -> 示例 -> 01.Basics -> Blink ，这是官方提供的最简程序。 修改一下引脚定义，因为 NodeMCU 板载 LED 接的是 GPIO2，也就是 D4 口，而 Uno 上的 Blink 默认是 13 号引脚。

本内容遵循CC 4.0 BY-SA版权协议 本文介绍一套面向嵌入式初学者的Arduino系统化实践源码包，聚焦硬件抽象层（HAL）设计、四层 ...

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