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-/*
- WiFi Web Server LED Blink
-
- A simple web server that lets you blink an LED via the web.
- This sketch will print the IP address of your WiFi Shield (once connected)
- to the Serial monitor. From there, you can open that address in a web browser
- to turn on and off the LED on pin 9.
-
- If the IP address of your shield is yourAddress:
- http://yourAddress/H turns the LED on
- http://yourAddress/L turns it off
-
- This example is written for a network using WPA encryption. For
- WEP or WPA, change the Wifi.begin() call accordingly.
-
- Circuit:
- * WiFi shield attached
- * LED attached to pin 9
-
- created 25 Nov 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() {
- Serial.begin(9600); // initialize serial communication
- pinMode(9, OUTPUT); // set the LED pin mode
-
- // check for the presence of the shield:
- if (WiFi.status() == WL_NO_SHIELD) {
- Serial.println("WiFi shield not present");
- while(true); // don't continue
- }
-
- // attempt to connect to Wifi network:
- while ( status != WL_CONNECTED) {
- Serial.print("Attempting to connect to Network named: ");
- Serial.println(ssid); // print the network name (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(); // start the web server on port 80
- printWifiStatus(); // you're connected now, so print out the status
-}
-
-
-void loop() {
- WiFiClient client = server.available(); // listen for incoming clients
-
- if (client) { // if you get a client,
- Serial.println("new client"); // print a message out the serial port
- String currentLine = ""; // make a String to hold incoming data from the client
- while (client.connected()) { // loop while the client's connected
- if (client.available()) { // if there's bytes to read from the client,
- char c = client.read(); // read a byte, then
- Serial.write(c); // print it out the serial monitor
- if (c == '\n') { // if the byte is a newline character
-
- // if the current line is blank, you got two newline characters in a row.
- // that's the end of the client HTTP request, so send a response:
- if (currentLine.length() == 0) {
- // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
- // and a content-type so the client knows what's coming, then a blank line:
- client.println("HTTP/1.1 200 OK");
- client.println("Content-type:text/html");
- client.println();
-
- // the content of the HTTP response follows the header:
- client.print("Click <a href=\"/H\">here</a> turn the LED on pin 9 on<br>");
- client.print("Click <a href=\"/L\">here</a> turn the LED on pin 9 off<br>");
-
- // The HTTP response ends with another blank line:
- client.println();
- // break out of the while loop:
- break;
- }
- else { // if you got a newline, then clear currentLine:
- currentLine = "";
- }
- }
- else if (c != '\r') { // if you got anything else but a carriage return character,
- currentLine += c; // add it to the end of the currentLine
- }
-
- // Check to see if the client request was "GET /H" or "GET /L":
- if (currentLine.endsWith("GET /H")) {
- digitalWrite(9, HIGH); // GET /H turns the LED on
- }
- if (currentLine.endsWith("GET /L")) {
- digitalWrite(9, LOW); // GET /L turns the LED off
- }
- }
- }
- // 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");
- // print where to go in a browser:
- Serial.print("To see this page in action, open a browser to http://");
- Serial.println(ip);
-}