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/*
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  Web Server
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 A simple web server that shows the value of the analog input pins.
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 using an Arduino Wiznet Ethernet shield. 
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 Circuit:
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 * Ethernet shield attached to pins 10, 11, 12, 13
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 * Analog inputs attached to pins A0 through A5 (optional)
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 created 18 Dec 2009
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 by David A. Mellis
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 modified 4 Sep 2010
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 by Tom Igoe
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 */
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#include <SPI.h>
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#include <Ethernet.h>
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// Enter a MAC address and IP address for your controller below.
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// The IP address will be dependent on your local network:
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byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
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IPAddress ip(192,168,1, 177);
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// Initialize the Ethernet server library
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// with the IP address and port you want to use 
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// (port 80 is default for HTTP):
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EthernetServer server(80);
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void setup()
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{
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  // start the Ethernet connection and the server:
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  Ethernet.begin(mac, ip);
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  server.begin();
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}
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void loop()
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{
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  // listen for incoming clients
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  EthernetClient client = server.available();
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  if (client) {
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    // an http request ends with a blank line
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    boolean currentLineIsBlank = true;
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    while (client.connected()) {
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      if (client.available()) {
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        char c = client.read();
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        // if you've gotten to the end of the line (received a newline
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        // character) and the line is blank, the http request has ended,
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        // so you can send a reply
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        if (c == '\n' && currentLineIsBlank) {
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          // send a standard http response header
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          client.println("HTTP/1.1 200 OK");
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          client.println("Content-Type: text/html");
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          client.println();
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          // output the value of each analog input pin
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          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
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            client.print("analog input ");
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            client.print(analogChannel);
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            client.print(" is ");
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            client.print(analogRead(analogChannel));
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            client.println("<br />");
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          }
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          break;
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        }
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        if (c == '\n') {
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          // you're starting a new line
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          currentLineIsBlank = true;
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        } 
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        else if (c != '\r') {
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          // you've gotten a character on the current line
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          currentLineIsBlank = false;
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        }
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      }
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    }
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    // give the web browser time to receive the data
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    delay(1);
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    // close the connection:
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    client.stop();
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  }
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}