This example requires an ethernet shield and an LED connected to pin 6.
Copy the code into a new sketch and upload it to your arduino and then open your web browser to http://192.168.1.177
Code
[c]
#include <SPI.h>
#include <Ethernet.h>
#include <Servo.h>
Servo myservo; // create servo object to control a servo
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 177 }; // ip in lan
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(80); //server port
String readString;
//////////////////////
void setup(){
pinMode(6, OUTPUT); //pin selected to control
//start Ethernet
Ethernet.begin(mac, ip, gateway, subnet);
server.begin();
//the pin for the servo co
//enable serial data print
Serial.begin(9600);
Serial.println(“server LED test 1.0″); // so I can keep track of what is loaded
}
void loop(){
// Create a client connection
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 100) {
//store characters to string
readString += c;
//Serial.print(c);
}
//if HTTP request has ended
if (c == ‘\n’) {
///////////////
Serial.println(readString); //print to serial monitor for debuging
client.println(“HTTP/1.1 200 OK”); //send new page
client.println(“Content-Type: text/html”);
client.println();
client.println(“<HTML>”);
client.println(“<HEAD>”);
client.println(“<TITLE>LED on/off</TITLE>”);
client.println(“</HEAD>”);
client.println(“<BODY>”);
client.println(“<H1>LED On/Off</H1>”);
client.println(“<hr />”);
client.println(“<br />”);
client.println(“<a href=\”/?lighton\”\”>Turn On Light</a>”);
client.println(“<a href=\”/?lightoff\”\”>Turn Off Light</a><br />”);
client.println(“</BODY>”);
client.println(“</HTML>”);
delay(1);
//stopping client
client.stop();
///////////////////// control arduino pin
if(readString.indexOf(“?lighton”) >0)//checks for on
{
digitalWrite(6, HIGH); // set pin 4 high
Serial.println(“Led On”);
}
else
{
if(readString.indexOf(“?lightoff”) >0)//checks for off
{
digitalWrite(6, LOW); // set pin 4 low
Serial.println(“Led Off”);
}
}
//clearing string for next read
readString=””;
}
}
}
}
}
[/c]
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