本帖最后由 烈火 于 2017-1-4 18:28 编辑
楼主你好，本人小白，我用你的第二个代码烧进arduino后(只是把DHCP设置IP改成了自动获取IP，其他不变，如下：
上传完成后，能够读出自动获取的IP，浏览器输入IP后串口也显示new client！。但是浏览器确是一片空白，为什么呢？
D:\1.png
[mw_shl_code=applescript,true]/*
OpenJumper WebServer Example
http://www.openjumper.com/ethernet/
显示室内照度+开关灯控制
通过手机、平板、计算机等设备访问
Arduino Server，就看到当前室内光线照度
在A0引脚连接光敏模块，用于采集室内光线；在2号引脚连接LED模块。
奈何col 2014.12.25
*/
#include <SPI.h>
#include <Ethernet.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
//IPAddress ip(192,168,1,177);
EthernetServer server(80);
EthernetClient client;
String readString="";
int Light=2;
int Sensor=A0;
void setup() {
Serial.begin(9600);
//初始化Ethernet通信
Ethernet.begin(mac);
server.begin();
pinMode(Light,OUTPUT);
Serial.print("Server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// 监听连入的客户端
client = server.available();
if (client) {
Serial.println("new client");
boolean currentLineIsBlank = false;
while (client.connected()) {
if (client.available()) {
char c = client.read();
readString += c;
if (c == '\n') {
Serial.println(readString);
//检查收到的信息中是否有”on”，有则开灯
if(readString.indexOf("?on") >0) {
digitalWrite(Light, HIGH);
Serial.println("Led On");
break;
}
//检查收到的信息中是否有”off”，有则关灯
if(readString.indexOf("?off") >0) {
digitalWrite(Light, LOW);
Serial.println("Led Off");
break;
}
//检查收到的信息中是否有”getBrightness”，有则读取光敏模拟值，并返回给浏览器
if(readString.indexOf("?getBrightness") >0) {
client.println(analogRead(Sensor));
break;
}
//发送HTML文本
SendHTML();
break;
}
}
}
delay(1);
client.stop();
Serial.println("client disonnected");
readString="";
}
}
// 用于输出HTML文本的函数
void SendHTML()
{
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html><head><meta charset=\"UTF-8\"><title>OpenJumper!Arduino Web Server</title><script type=\"text/javascript\">");
client.println("function send2arduino(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");element=document.getElementById(\"light\");if (element.innerHTML.match(\"Turn on\")){element.innerHTML=\"Turn off\"; xmlhttp.open(\"GET\",\"?on\",true);}else{ element.innerHTML=\"Turn on\";xmlhttp.open(\"GET\",\"?off\",true); }xmlhttp.send();}");
client.println("function getBrightness(){var xmlhttp;if (window.XMLHttpRequest)xmlhttp=new XMLHttpRequest();else xmlhttp=new ActiveXObject(\"Microsoft.XMLHTTP\");xmlhttp.onreadystatechange=function(){if (xmlhttp.readyState==4 && xmlhttp.status==200)document.getElementById(\"brightness\").innerHTML=xmlhttp.responseText;};xmlhttp.open(\"GET\",\"?getBrightness\",true); xmlhttp.send();}window.setInterval(getBrightness,1000);</script>");
client.println("</head><body><div align=\"center\"><h1>Arduino Web Server</h1><div>brightness:</div><div id=\"brightness\">");
client.println(analogRead(Sensor));
client.println("</div><button id=\"light\" type=\"button\" onclick=\"send2arduino()\">Turn on</button><button type=\"button\" onclick=\"alert('OpenJumper Web Server')\">About</button></div></body></html>");
}[/mw_shl_code]
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发表于 2016-12-11 13:32
楼主
