【小e物联网试用体验】开发板初步试用(完结-6)

ti

6.3.4 服务器端java代码

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class SocketServer {

public static void main(String[] args) {

try {

/** 创建ServerSocket*/

// 创建一个ServerSocket在端口2013监听客户请求

ServerSocket serverSocket =new ServerSocket(20006);

System.out.println("Server started!("+serverSocket.getInetAddress().getHostAddress()+")");

while (true) {

// 侦听并接受到此Socket的连接,请求到来则产生一个Socket对象，并继续执行

Socket socket = serverSocket.accept();

/** 获取客户端传来的信息 */

// 由Socket对象得到输入流，并构造相应的BufferedReader对象

BufferedReader bufferedReader =new BufferedReader(new InputStreamReader(socket.getInputStream()));

// 获取从客户端读入的字符串

String result = bufferedReader.readLine();

System.out.println("Client say : " + result);

/** 发送服务端准备传输的 */

// 由Socket对象得到输出流，并构造PrintWriter对象

PrintWriter printWriter =new PrintWriter(socket.getOutputStream());

printWriter.print("hello Client, I am Server!");

printWriter.flush();

/** 关闭Socket*/

printWriter.close();

bufferedReader.close();

socket.close();

}

}catch (Exception e) {

System.out.println("Exception:" + e);

}finally{

// serverSocket.close();

}

编译上述代码后，用Java运行(过程不细述)。

将开发板的固件烧录到开发板后，运行结果如下：

服务端：

客户端：

ets Jan 8 2013,rst cause:1, boot mode:(3,7)

load 0x40100000, len 26044, room 16

tail 12

chksum 0xf3

ho 0 tail 12 room 4

load 0x3ffe8000, len 3180, room 12

tail 0

chksum 0x53

load 0x3ffe8c70, len 2616, room 8

tail 0

chksum 0xb8

csum 0xb8

OS SDK ver: 1.4.0(c599790) compiled @ Feb 26 2016 11:08:14

phy ver: 762, pp ver: 10.4

SDK version:1.4.0(c599790)

get chip id ok

get mac address ok

get flash info ok

====client info======

Wifi state:0

chipID:14552115

mac addr:18:fe:34:de:0c:33

preset parameters:,

empty

EspMsgMutex created

mode : sta(18:fe:34:de:0c:33)

add if0

scandone

state: 0 -> 2 (b0)

state: 2 -> 3 (0)

state: 3 -> 5 (10)

add 0

aid 3

pm open phy_2,type:2 0 0

cnt

connected with TP-LINK_6FD10A, channel 6

dhcp client start...

et_wifi_event_cb,event_id:1

connect to ssid:TP-LINK_6FD10A,channel:6

ip:192.168.1.6,mask:255.255.255.0,gw:192.168.1.1

et_wifi_event_cb,event_id:4

Got IP! ip:192.168.1.6,mask:255.255.255.0,gw:192.168.1.1

tcp client init!(server ip:192.168.1.5,server port:20006)

espconn remote IP:192.168.1.5

espconn remote port:20006

espconn local IP:192.168.1.6

espconn local port:22211

espconn connect success!

espconn_client_connect, regist espconn_client_recv

Connect

Send Success

Receive Data:hello Client, I am Server!

espconn_client_recv, espconn_client_close, err:0, p: 0

espconn_client_close, close

espconn_thread 1413,message[3fff24b0]

espconn_thread 1433,sig_type[4]

DisConnect! try to reconnect......

espconn_client_connect, regist espconn_client_recv

Connect

Send Success

Receive Data:hello Client, I am Server!

espconn_client_recv, espconn_client_close, err:0, p: 0

espconn_client_close, close

espconn_thread 1413,message[3fff21d8]

espconn_thread 1433,sig_type[4]

DisConnect! try to reconnect......

espconn_client_connect, regist espconn_client_recv

Connect

Send Success

Receive Data:hello Client, I am Server!

espconn_client_recv, espconn_client_close, err:0, p: 0

espconn_client_close, close

espconn_thread 1413,message[3fff2250]

espconn_thread 1433,sig_type[4]

DisConnect! try to reconnect......

espconn_client_connect, regist espconn_client_recv

Connect

Send Success

Receive Data:hello Client, I am Server!

espconn_client_recv, espconn_client_close, err:0, p: 0

espconn_client_close, close

espconn_thread 1413,message[3fff61e0]

espconn_thread 1433,sig_type[4]

DisConnect! try to reconnect......

espconn_client_connect, regist espconn_client_recv

Connect

Send Success

Receive Data:hello Client, I am Server!

espconn_client_recv, espconn_client_close, err:0, p: 0

espconn_client_close, close

espconn_thread 1413,message[3fff2228]

espconn_thread 1433,sig_type[4]

DisConnect! try to reconnect......

【总结】基于小E开发板进行了局域网配网/UART通信/与服务器之间的TCP连接等实验，测试过的基本功能已经可以满足物联网的应用。剩下的就是基于具体项目进行具体开发。煤气报警系统项目，只需要在开发板基础上增加UART通信的应用协议的实现和与服务器之间的TCP协议的应用协议的实现。从接触小E开发板到现在，花在开发板上的时间很少，但由于小E开发板文档配套、技术支持等方面到位，提高了wifi模块的开发效率，有利于项目的快速推进。

h1654155956.5608 · 2016-7-12 09:38:01

煤气报警用的什么传感器。

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【小e物联网试用体验】开发板初步试用(完结-6)

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