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+/*
+ WiFi Web Server
+
+ A simple web server that shows the value of the analog input pins.
+ using a WiFi shield.
+
+ This example is written for a network using WPA encryption. For
+ WEP or WPA, change the Wifi.begin() call accordingly.
+
+ Circuit:
+ * WiFi shield attached
+ * Analog inputs attached to pins A0 through A5 (optional)
+
+ created 13 July 2010
+ by dlf (Metodo2 srl)
+ modified 31 May 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <WiFi.h>
+
+
+char ssid[] = "yourNetwork"; // your network SSID (name)
+char pass[] = "secretPassword"; // your network password
+int keyIndex = 0; // your network key Index number (needed only for WEP)
+
+int status = WL_IDLE_STATUS;
+
+WiFiServer server(80);
+
+void setup() {
+ //Initialize serial and wait for port to open:
+ Serial.begin(9600);
+ while (!Serial) {
+ ; // wait for serial port to connect. Needed for Leonardo only
+ }
+
+ // check for the presence of the shield:
+ if (WiFi.status() == WL_NO_SHIELD) {
+ Serial.println("WiFi shield not present");
+ // don't continue:
+ while(true);
+ }
+
+ // attempt to connect to Wifi network:
+ while ( status != WL_CONNECTED) {
+ Serial.print("Attempting to connect to SSID: ");
+ Serial.println(ssid);
+ // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
+ status = WiFi.begin(ssid, pass);
+
+ // wait 10 seconds for connection:
+ delay(10000);
+ }
+ server.begin();
+ // you're connected now, so print out the status:
+ printWifiStatus();
+}
+
+
+void loop() {
+ // listen for incoming clients
+ WiFiClient 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");
+ client.println();
+ client.println("<!DOCTYPE HTML>");
+ client.println("<html>");
+ // add a meta refresh tag, so the browser pulls again every 5 seconds:
+ client.println("<meta http-equiv=\"refresh\" content=\"5\">");
+ // 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("</html>");
+ break;
+ }
+ 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");
+ }
+}
+
+
+void printWifiStatus() {
+ // print the SSID of the network you're attached to:
+ Serial.print("SSID: ");
+ Serial.println(WiFi.SSID());
+
+ // print your WiFi shield's IP address:
+ IPAddress ip = WiFi.localIP();
+ Serial.print("IP Address: ");
+ Serial.println(ip);
+
+ // print the received signal strength:
+ long rssi = WiFi.RSSI();
+ Serial.print("signal strength (RSSI):");
+ Serial.print(rssi);
+ Serial.println(" dBm");
+}
+