SPECIFICATIONS

Pin Function:

The Ethernet W5100 network expansion module enables the For Arduino to function as a simple web server or control network applications such as reading and writing to the For Arduino digital and analog interfaces over the network. A simple web server can be implemented directly using the Ethernet library included in the IDE.

This version also supports reading and writing to mini SD cards (TF cards).

This expansion board features a stackable design and can be directly plugged into the For Arduino, along with our other expansion boards.

Code:

#include <SPI.h>
/*
 * Web Server
 *
 * A simple web server that shows the value of the analog input pins.
 */
#include <Ethernet.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] =  { 192, 168, 1, 15 };
EthernetServer server(80);
void setup()
{
  Ethernet.begin(mac, ip);
  server.begin();
}
void loop()
{
EthernetClient client = server.available();
if (client) {
    // an http request ends with a blank line
    boolean current_line_is_blank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        // if we've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so we can send a reply
        if (c == 'n' && current_line_is_blank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();

          // output the value of each analog input pin
          client.print("welcome to tinyos electronics");
          client.println("<br />");
          client.print("//*************************************");
          client.println("<br />");
          client.print("");
          client.println("<br />");
          client.print("//*************************************");
          client.println("<br />");
          for (int i = 0; i < 6; i++) {
            client.print("analog input ");
            client.print(i);
            client.print(" is ");
            client.print(analogRead(i));
            client.println("<br />");
          }
          break;
        }
        if (c == 'n') {
          // we're starting a new line
          current_line_is_blank = true;
        } else if (c != 'r') {
          // we've gotten a character on the current line
          current_line_is_blank = false;
        }
      }
    }
    client.stop();
  }
}