Merge branch 'master' of github.com:arduino/wifishield

WiFi/examples/WifiChatServer/WifiChatServer.ino

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+/*
+ Wifi Chat  Server
+ 
+ A simple server that distributes any incoming messages to all
+ connected clients.  To use telnet to  your device's IP address and type.
+ You can see the client's input in the serial monitor as well.
+  
+  This example obtains an IP address from the Wifi router and
+  reports it.
+ 
+  Circuit:
+ * WiFi shield attached
+ 
+ created 21 May 2011
+ by Tom Igoe
+ 
+ */
+
+#include <SPI.h>
+#include <WiFi.h>
+#include <IPAddress.h>
+
+char ssid[] = "yourWifiNetwork";
+char pass[] = "seekrit-password";
+int status = WL_IDLE_STATUS;
+// telnet defaults to port 23
+Server server(23);
+boolean gotAMessage = false; // whether or not you got a message from the client yet
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Attempting to connect to WPA network...");
+  Serial.print("SSID: ");
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+  if ( status == WL_CONNECTED) {
+    // start listening for clients
+    server.begin();
+     Serial.println("Wifi shield is idle");
+    // report the IP address:
+    IPAddress myIPAddress = WiFi.localIp();
+    Serial.print("My IP Address: ");
+    Serial.print(WiFi.localIp()[3]);
+    Serial.print(".");
+    Serial.print(WiFi.localIp()[2]);
+    Serial.print(".");
+    Serial.print(WiFi.localIp()[1]);
+    Serial.print(".");
+    Serial.println(WiFi.localIp()[0]); 
+  } else {
+    // if you didn't get a wifi connection, report what happened:
+   switch (status) {
+      case WL_IDLE_STATUS:
+      Serial.println("Wifi connection succeeded");
+      break;
+      case WL_NO_SSID_AVAIL:
+       Serial.println("No Wifi network available");
+        break;
+      case WL_CONNECT_FAILED:
+       Serial.println("Wifi connection failed");
+        break;
+      case WL_CONNECTION_LOST:
+       Serial.println("Wifi connection lost");
+        break;
+      case WL_DISCONNECTED:
+       Serial.println("Wifi disconnected");
+     break;
+   }
+  }
+}
+
+void loop() {
+  // wait for a new client:
+  Client client = server.available();
+
+  // when the client sends the first byte, say hello:
+  if (client) {
+    if (!gotAMessage) {
+      Serial.println("I have a new client");
+      client.println("Hello, client!"); 
+      gotAMessage = true;
+    }
+
+    // read the bytes incoming from the client:
+    char thisChar = client.read();
+    // echo the bytes back to the client:
+    server.write(thisChar);
+    // echo the bytes to the server as well:
+    Serial.print(thisChar);
+  }
+}
+
+
+
+
+
+
+

WiFi/examples/WifiTwitterClient/WifiTwitterClient.ino

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+/*
+  Twitter Client with Strings
+ 
+ This sketch connects to Twitter using an Ethernet shield. It parses the XML
+ returned, and looks for <text>this is a tweet</text>
+ 
+ You can use the Arduino Ethernet shield, or the Adafruit Ethernet shield, 
+ either one will work, as long as it's got a Wiznet Ethernet module on board.
+ 
+ This example uses the DHCP routines in the Ethernet library which is part of the 
+ Arduino core from version 1.0 beta 1
+ 
+ This example uses the String library, which is part of the Arduino core from
+ version 0019.  
+ 
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+ 
+ created 21 May 2011
+ by Tom Igoe
+ 
+ This code is in the public domain.
+ 
+ */
+#include <SPI.h>
+#include <WiFi.h>
+#include <IPAddress.h>
+
+char ssid[] = "yourWifiNetwork";
+char pass[] = "seekrit-password";
+int status = WL_IDLE_STATUS;
+
+// initialize the library instance:
+Client client;
+
+const int requestInterval = 60000;  // delay between requests
+
+char serverName[] = "api.twitter.com";  // twitter URL
+
+boolean requested;                   // whether you've made a request since connecting
+long lastAttemptTime = 0;            // last time you connected to the server, in milliseconds
+
+String currentLine = "";            // string to hold the text from server
+String tweet = "";                  // string to hold the tweet
+boolean readingTweet = false;       // if you're currently reading the tweet
+
+void setup() {
+  // reserve space for the strings:
+  currentLine.reserve(256);
+  tweet.reserve(150);
+  // initialize serial:
+  Serial.begin(9600);
+  Serial.println("Attempting to connect to WPA network...");
+  Serial.print("SSID: ");
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+  if ( status != WL_CONNECTED) { 
+    Serial.println("Couldn't get a wifi connection");
+    while(true);
+  } 
+  else {
+    Serial.println("Connected to wifi");
+    connectToServer();
+  }
+}
+
+
+
+void loop()
+{
+  if (client.connected()) {
+    if (client.available()) {
+      // read incoming bytes:
+      char inChar = client.read();
+Serial.write(inChar);
+
+      // add incoming byte to end of line:
+      currentLine += inChar; 
+
+      // if you get a newline, clear the line:
+      if (inChar == '\n') {
+        currentLine = "";
+      } 
+      // if the current line ends with <text>, it will
+      // be followed by the tweet:
+      if ( currentLine.endsWith("<text>")) {
+        // tweet is beginning. Clear the tweet string:
+        readingTweet = true; 
+        tweet = "";
+      }
+      // if you're currently reading the bytes of a tweet,
+      // add them to the tweet String:
+      if (readingTweet) {
+        if (inChar != '<') {
+          tweet += inChar;
+        } 
+        else {
+          // if you got a "<" character,
+          // you've reached the end of the tweet:
+          readingTweet = false;
+          Serial.println(tweet);   
+          // close the connection to the server:
+          client.stop(); 
+        }
+      }
+    }   
+  }
+  else if (millis() - lastAttemptTime > requestInterval) {
+    // if you're not connected, and two minutes have passed since
+    // your last connection, then attempt to connect again:
+    connectToServer();
+  }
+}
+
+void connectToServer() {
+  // attempt to connect, and wait a millisecond:
+  Serial.println("connecting to server...");
+  if (client.connect(serverName, 80)) {
+    Serial.println("making HTTP request...");
+    // make HTTP GET request to twitter:
+    client.println("GET /1/statuses/user_timeline.xml?screen_name=arduino&count=1 HTTP/1.1");
+    client.println("HOST: api.twitter.com");
+    client.println();
+  }
+  // note the time of this connect attempt:
+  lastAttemptTime = millis();
+}   
+

WiFi/examples/WifiWebClient/WifiWebClient.ino

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+#include <SPI.h>
+
+/*
+  Web client
+ 
+ This sketch connects to a website (http://www.google.com)
+ using a WiFi shield.
+ 
+ Circuit:
+ * WiFi shield attached
+ * Analog inputs attached to pins A0 through A5 (optional)
+ 
+ created 13 July 2010
+ by Domenico La Fauci
+ modified 21 May 2011
+ by Tom Igoe
+ */
+
+
+#include <SPI.h>
+#include <WiFi.h>
+#include <IPAddress.h>
+
+char ssid[] = "yourWifiNetwork";
+char pass[] = "seekrit-password";
+int status = WL_IDLE_STATUS;
+IPAddress server(74,125,115,105);  // Google
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server 
+// that you want to connect to (port 80 is default for HTTP):
+Client client;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Attempting to connect to WPA network...");
+  Serial.print("SSID: ");
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+  if ( status != WL_CONNECTED) { 
+    Serial.println("Couldn't get a wifi connection");
+    while(true);
+  } 
+  else {
+    Serial.println("Connected to wifi");
+    Serial.println("\nStarting connection...");
+    // if you get a connection, report back via serial:
+    if (client.connect(server, 80)) {
+      Serial.println("connected");
+      // Make a HTTP request:
+      client.println("GET /search?q=arduino HTTP/1.0");
+      client.println();
+    }
+  }
+}
+
+void loop() {
+  // if there are incoming bytes available 
+  // from the server, read them and print them:
+  if (client.available()) {
+    char c = client.read();
+    Serial.print(c);
+  }
+
+  // if the server's disconnected, stop the client:
+  if (!client.connected()) {
+    Serial.println();
+    Serial.println("disconnecting.");
+    client.stop();
+
+    // do nothing forevermore:
+    for(;;)
+      ;
+  }
+}
+
+