Pins Used
W5100 Ethernet Shield -- D10, D11, D12, D13
Analog Sensors -- A0, A1, A2, A3, A4, A5
Switches -- D2, D3, D4, D5, D6, D7, D8, D9
Output On Chrome Browser
Sketch
// modified from Instructables Arduino Led Server and Arduino Example WebServer
// by Befun Hung on Oct. 20, 2012
// the sketch works on Arduino IDE 1.01
#include <Ethernet.h>
#include <SPI.h>
//network NB: Pins 10, 11, 12 and 13 are reserved for Ethernet module.
#define sensorPinStart 0 //change to 2 if using Arduino Ethernet Shield 05 or 06
#define noOfSensors 2
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 1, 177 };
byte gateway[] = { 192, 168, 1, 1 };
byte subnet[] = { 255, 255, 255, 0 };
String inString = String(35);
String Led;
int led[] = {00, 2, 3, 4 ,5 ,6 ,7 ,8,9 }; //Led pins num 0 in arry is not used
int numofleds = 8; //numofleds
String value[] = {"off","off","off","off","off","off","off","off","off"}; //startup all led are off
EthernetServer server(80);
String data;
void setup()
{
Serial.begin(9600);
Ethernet.begin(mac, ip,gateway,subnet);
server.begin();
//set pin mode
for (int j = 1; j < (numofleds + 1); j++)
{
pinMode(led[j], OUTPUT);
}
Serial.println("Serial READY");
Serial.println("Ethernet READY");
Serial.println("Server READY");
}
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 (inString.length() < 35)
{
inString.concat(c);
}
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();
client.println("<html>");
client.println("<meta http-equiv=\"refresh\" content=\"5\">");
client.println("<body><form method=get>");
client.println("<center><p><h1>Freeduino/Arduino Web Sensor And Switch</h1></p><hr></center>");
client.println("<h2>");
client.println("Sensor Reading:<br>");
for (int analogChannel = sensorPinStart ; analogChannel < sensorPinStart+noOfSensors ; analogChannel++)
{
int sensorReading = analogRead(analogChannel);
client.print("Analog Input ");
client.print(analogChannel);
client.print(" : ");
client.print(sensorReading);
client.println("<br>");
}
client.println("<p></p>Switches Status:<br>");
for(int i=1;i < (numofleds + 1) ;i++)
{
Led = String("Switch") + i;
if(inString.indexOf(Led+"=off")>0 || inString.indexOf("all=on")>0)
{
Serial.println(Led+"on");
digitalWrite(led[i], HIGH);
value[i] = "on";
}
else if(inString.indexOf(Led+"=on")>0 || inString.indexOf("all=off")>0 )
{
Serial.println(Led+"off");
digitalWrite(led[i], LOW);
value[i] = "off";
}
client.println(Led+" <input type=submit name="+Led+" value="+value[i]+">"+"<br>");
}
client.println("<p></p>Switches Action:<br>");
client.println("All <input type=submit name=all value=on><input type=submit name=all value=off>");
client.println("</form><hr></h2>");
client.println("<center>The web page will automatically refresh every 5 seconds.</center>");
client.println("</html></body>");
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;
}
} // End of if (client.available)
} // End of while (client.connected())
// give the web browser time to receive the data
delay(1);
inString = "";
client.stop();
} //End of if (client)
}
