在上篇esp8266烧录好固件之后，这篇记录如何移植AT组件。

硬件连接

N32G457串口1用于finsh。这里配置串口2用于AT串口，与ESP8266通信。

RT-Thread Setinng

1、添加usart2：

2、打开配置工具，在添加软件包里搜索at_device

3、进入配置好wifi SSD与PWD

配置好后，编译下载到开发板。重启后打开串口终端：

\ | /
- RT -     Thread Operating System
 / | \     4.1.1 build Feb 14 2023 10:42:35
 2006 - 2022 Copyright by RT-Thread team
[I/sal.skt] Socket Abstraction Layer initialize success.
[I/at.clnt] AT client(V1.3.1) on device usart2 initialize success.
msh >[I/at.dev.esp] esp0 device wifi is connected.
[I/at.dev.esp] esp0 device wifi is disconnect.
[I/at.dev.esp] esp0 device wifi is connected.
[I/at.dev.esp] esp0 device network initialize successfully.

显示esp0驱动成功，网络也配置成功
输入ifconfig查看网络信息：

msh >ifconfig
network interface device: esp0 (Default)
MTU: 1500
MAC: 5c cf 7f d6 7b f5
FLAGS: UP LINK_UP INTERNET_UP DHCP_ENABLE
ip address: 192.168.101.54
gw address: 192.168.101.1
net mask  : 255.255.255.0
dns server #0: 192.168.101.1
dns server #1: 0.0.0.0

看到获取到了网络的详细信息。

ping测试

ping百度测试一下，是OK的：

msh >ping www.baidu.com
32 bytes from 14.215.177.39 icmp_seq=0 time=297 ms
32 bytes from 14.215.177.39 icmp_seq=1 time=207 ms
32 bytes from 14.215.177.39 icmp_seq=2 time=223 ms
32 bytes from 14.215.177.39 icmp_seq=3 time=20 ms

【小结】RTT 生态完美支持esp8266。N32G457可以RTT简单的配置，就能实现网络信息交换。