#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>
// MAC address from Ethernet shield sticker
under board
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE,
0xED };
IPAddress ip(192, 168, 0, 2); // IP address, may
need to change depending on network
EthernetServer server(80); // create a server at port 80
File webFile;
void setup()
{
Ethernet.begin(mac, ip); //
initialize Ethernet device
server.begin(); //
start to listen for clients
Serial.begin(9600); // for
debugging
//
initialize SD card
Serial.println("Initializing SD card...");
if
(!SD.begin(4)) {
Serial.println("ERROR - SD card initialization failed!");
return; // init failed
}
Serial.println("SUCCESS - SD card initialized.");
//
check for index.htm file
if
(!SD.exists("index.htm")) {
Serial.println("ERROR - Can't find index.htm file!");
return; // can't find index
file
}
Serial.println("SUCCESS - Found index.htm file.");
}
void loop()
{
EthernetClient client = server.available(); // try to get client
if (client) { // got client?
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) { //
client data available to read
char c = client.read(); // read 1 byte (character) from client
// last line of client request is blank and ends with \n
// respond to client only after last line received
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");
client.println();
// send web page
webFile =
SD.open("index.htm");
// open web page file
if (webFile) {
while(webFile.available()) {
client.write(webFile.read());
// send web page to client
}
webFile.close();
}
break;
}
// every line of text received from the client ends with \r\n
if (c == '\n') {
// last character on line
of received text
// starting new line with
next character read
currentLineIsBlank =
true;
}
else if (c != '\r') {
// a text character was
received from client
currentLineIsBlank =
false;
}
} // end if (client.available())
} // end while (client.connected())
delay(1); // give the web browser time to receive
the data
client.stop(); // close the connection
} //
end if (client)
}
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