WebServer2_iwt.sketch

/*
  Web Server

 A simple web server that shows the value of the analog input pins.
 using an Arduino Wiznet Ethernet shield.

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13
 * Analog inputs attached to pins A0 through A5 (optional)

 created 18 Dec 2009
 by David A. Mellis
 modified 9 Apr 2012
 by Tom Igoe

 */

#include <SPI.h>
#include <Ethernet.h>

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,99,3);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }


  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
}


void loop() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank)
        {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");  // the connection will be closed after completion of the response
          client.println("Refresh: 5");  // refresh the page automatically every 5 sec
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          client.println("<body>");
          client.println("<h2>LittleFe Node Reset Subsystem</h2>");
          client.print("<form METHOD=get action=\"http://");
          client.print(Ethernet.localIP());
          client.println("\">");
          client.println("<table border='1'>");
          client.println("<tr><th>Node</th><th>Reset</th><th>Power</th></tr>");
          for (int i=1; 7>i; i++)
          { /* for each node */
            client.print("<tr><td>");
            client.print(i);
            client.print("</td><td><input type=\"radio\" name=\"r");
            client.print(i);
            client.print("\" value=\"1\"></td><td><input type=\"radio\" name=\"p");
            client.print(i);
            client.println("1\" value=\"1\"></td></tr>");
          } /* for each node */
          client.println("<tr><td colspan='3'><input type=submit value=\"Submit\"></td></tr>");
          client.println("</table>");
          client.println("</form>");
          // output the value of each analog input pin
          // for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
          //   int sensorReading = analogRead(analogChannel);
          //   client.print("analog input ");
          //  client.print(analogChannel);
          //  client.print(" is ");
          //  client.print(sensorReading);
          //  client.println("<br />");
          client.println("</body>");
          client.println("</html>");
          break;
        }
       if (c == '\n')
        {

        }
        // you've gotten a character on the current line
        //   currentLineIsBlank = false;


        // if (c == '\n') {
        // you're starting a new line
        //   currentLineIsBlank = true;
        // }
        // else if (c != '\r') {
        // you've gotten a character on the current line
        //   currentLineIsBlank = false;
        // }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
    Serial.println("client disonnected");
  }
}