# 通信模块概要说明

Nyboard V1 使用了Atmel ATMEGA328P芯片，该芯片仅支持一个串口。为了让Nyboard支持更多通信模块，我们将该串口独立出来。该串口引脚兼容Arduino Pro Mini的6针，具体如下表：

<table><thead><tr><th width="150">序号</th><th width="150">引脚名称</th><th width="456.2">用途</th><th></th></tr></thead><tbody><tr><td>1</td><td>DTR</td><td>串口Modem信号，用于下载完成后复位Nyboard</td><td></td></tr><tr><td>2</td><td>RX</td><td>ATMEGA328P的串口RX（接收）信号</td><td></td></tr><tr><td>3</td><td>TX</td><td>ATMEGA328P的串口TX（发送）信号</td><td></td></tr><tr><td>4</td><td>5V</td><td>板载5V供电电路，为MCU和芯片供电</td><td></td></tr><tr><td>5</td><td>GND</td><td>地线</td><td></td></tr><tr><td>6</td><td>GND</td><td>地线</td><td></td></tr></tbody></table>

Nyboard的串口通信速率默认为 **115200** bps

Petoi当前为Nyboard开发的通信模块包括：

* [USB上载模块](https://docs.petoi.com/v/chinese/mo-kuai-shi-yong-zhi-nan-1/usb-xia-zai-mo-kuai-ch340c)
* 基于JDY-23的双模（EDR & BLE）[蓝牙模块](https://docs.petoi.com/v/chinese/mo-kuai-shi-yong-zhi-nan-1/shuang-mo-lan-ya-mo-kuai)
* 基于ESP8266的[WiFi模块](https://docs.petoi.com/v/chinese/mo-kuai-shi-yong-zhi-nan-1/wifi-mo-kuai-esp8266)


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