ESP8266 NodeMCU引脚说明

淡淡的烟草味﹌ 2023-01-09 15:52 196阅读 0赞

![cfefd932a8e111aabf86bbccf852982d.png][]

#### 问题 ####

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开发**ESP8266 NodeMCU** GPIO功能时,作为小白的我根本不知道引脚编号,虽然知道**ESP8266 NodeMCU**丝印引脚编号如下图所示,但是和实际对应的GPIO编号完全不一样.

![52bafd7db57c40a3e83f799504823b52.png][]

#### 解决 ####

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经过多方面的资料查找,我汇总了以下的对应图片.

![2bc5bf019b8d039bd79a058b92ba6625.png][]

![a906721c201c3db01f3a82c3bdacbba6.png][]

汇总成表格的话,如下表格所示.

<table> 
 <thead> 
  <tr> 
   <th align="center">GPIO编号</th> 
   <th align="center">丝印编号</th> 
   <th align="center">旧版丝印编号</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td align="center">GPIO 0</td> 
   <td align="center">D3</td> 
   <td align="center">D8</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 1</td> 
   <td align="center">TX(D10)</td> 
   <td align="center">D5</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 2</td> 
   <td align="center">D4</td> 
   <td align="center">RX(D9)</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 3</td> 
   <td align="center">RX(D9)</td> 
   <td align="center">D4</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 4</td> 
   <td align="center">D2</td> 
   <td align="center">TX(D10)</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 5</td> 
   <td align="center">D1</td> 
   <td align="center">D11</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 6 - 11</td> 
   <td align="center">不可用,但需要一直供电</td> 
   <td align="center">不可用,但需要一直供电</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 12</td> 
   <td align="center">D6</td> 
   <td align="center">D0</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 13</td> 
   <td align="center">D7</td> 
   <td align="center">D1</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 14</td> 
   <td align="center">D5</td> 
   <td align="center">D2</td> 
  </tr> 
  <tr> 
   <td align="center">GPIO 15</td> 
   <td align="center">D8</td> 
   <td align="center">D3</td> 
  </tr> 
 </tbody> 
</table>

#### 后记 ####

--------------------

网上关于ESP8266 NodeMCU引脚关系文章较少,所以写这么一篇做一下总结,欢迎指导交流,有任何问题可以在评论区评论,谢谢大家的观看了.

参考文献如下所示。  
[乐鑫 ESP8266管脚功能清单][ESP8266]  
[ESP8266(nodemcu)引脚和I2C的坑][ESP8266_nodemcu_I2C]  
[ESP8266刷NodeMCU之后GPIO-IO索引对照表][ESP8266_NodeMCU_GPIO-IO]  
[The ESP8266 as a microcontroller - Hardware][]

![5da29a8582ac7cd9ad291d1563304dbd.gif][]

[cfefd932a8e111aabf86bbccf852982d.png]: /images/20221119/01cf8130733844588e6841b7c606a71e.png
[52bafd7db57c40a3e83f799504823b52.png]: /images/20221119/3c2cdb66fed14d1e92bdb23d69d3a821.png
[2bc5bf019b8d039bd79a058b92ba6625.png]: /images/20221119/6dc16a0d9334488ca054fc3ada18a7dd.png
[a906721c201c3db01f3a82c3bdacbba6.png]: https://img-blog.csdnimg.cn/img_convert/a906721c201c3db01f3a82c3bdacbba6.png
[ESP8266]: https://www.espressif.com/zh-hans/support/download/documents
[ESP8266_nodemcu_I2C]: https://www.jianshu.com/p/c1d316ef6e8f
[ESP8266_NodeMCU_GPIO-IO]: https://www.bigiot.net/talk/37.html
[The ESP8266 as a microcontroller - Hardware]: https://tttapa.github.io/ESP8266/Chap04%20-%20Microcontroller.html
[5da29a8582ac7cd9ad291d1563304dbd.gif]: https://img-blog.csdnimg.cn/img_convert/5da29a8582ac7cd9ad291d1563304dbd.gif