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1  Using Arduino / Project Guidance / Re: Yet another web control project, with a catch on: October 09, 2012, 10:40:48 am
The code should be like this(you need to change the place of "  readString=""; " )

//zoomkat 3-17-12
//simple button GET server code to control servo and arduino pin 5
//for use with IDE 1.0
//open serial monitor to see what the arduino receives
//use the \ slash to escape the " in the html
//address will look like http://192.168.1.102:84 when submited
//for use with W5100 based ethernet shields
//Powering a servo from the arduino usually DOES NOT WORK.
//note that the below bug fix may be required
// http://code.google.com/p/arduino/issues/detail?id=605

#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, 102 }; // ip in lan
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(84); //server port

String readString;

//////////////////////

void setup(){

  pinMode(5, OUTPUT); //pin selected to control
  pinMode(6, OUTPUT); //pin selected to control
  pinMode(7, OUTPUT); //pin selected to control
  //start Ethernet
  Ethernet.begin(mac, ip, gateway, gateway, subnet);
  server.begin();

  //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>Arduino GET test page</TITLE>");
          client.println("</HEAD>");
          client.println("<BODY>");

          client.println("<H1>Zoomkat's simple Arduino button</H1>");

          // DIY buttons
          client.println("<a href=\"/?on1\"\">ON</a>");
          client.println("<a href=\"/?off1\"\">OFF</a><br />");

          // mousedown buttons
          client.println("<br><input type=\"button\" value=\"ON\" onmousedown=\"location.href ('/?on2');\"/>");
          client.println("<input type=\"button\" value=\"OFF\" onmousedown=\"location.href ('/?off2');\"/>");        

          // mousedown radio buttons
          client.println("<br><br><input type=\"radio\" value=\"ON\" onmousedown=\"location.href ('/?on3');\"\">ON</>");
          client.println("<input type=\"radio\" value=\"OFF\" onmousedown=\"location.href ('/?off3');\"\">OFF</>");        

          client.println("</BODY>");
          client.println("</HTML>");

          delay(1);
          //stopping client
          client.stop();

          ///////////////////// control arduino pin
          if(readString.indexOf("on1") >0) {
            digitalWrite(5, HIGH);
            Serial.println("Led on1");
          }
          if(readString.indexOf("off1") >0) {
            digitalWrite(5, LOW);
            Serial.println("Led off1");
          }
          
          if(readString.indexOf("on2") >0) {
            digitalWrite(6, HIGH);
            Serial.println("Led on2");
          }
          if(readString.indexOf("off2") >0) {
            digitalWrite(6, LOW);
            Serial.println("Led off2");
          }

          if(readString.indexOf("on3") >0) {
            digitalWrite(7, HIGH);
            Serial.println("Led on3");
          }
          if(readString.indexOf("off3") >0) {
            digitalWrite(7, LOW);
            Serial.println("Led off3");
          }
      
        //clearing string for next read
        readString="";
        }      
      }
    }
  }
}
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