Updated all clients to unify style, and include printWifiStatus() where useful

WiFi/examples/WifiPachubeClient/WifiPachubeClient.ino

@@ -4,6 +4,9 @@
  This sketch connects an analog sensor to Pachube (http://www.pachube.com)
  using an Arduino Wifi shield.
  
+ This example is written for a network using WPA encryption. For 
+ WEP or WPA, change the Wifi.begin() call accordingly.
+ 
  This example has been updated to use version 2.0 of the Pachube.com API. 
  To make it work, create a feed with a datastream, and give it the ID
  sensor1. Or change the code below to match your feed.
@@ -12,7 +15,7 @@
  * Analog sensor attached to analog in 0
  * Wifi shield attached to pins 10, 11, 12, 13
  
- created 2 March 2012
+ created 4 March 2012
  by Tom Igoe
  
  This code is in the public domain.
@@ -22,6 +25,7 @@
 #include <SPI.h>
 #include <WiFi.h>
 
+
 #define APIKEY         "YOUR API KEY GOES HERE" // replace your pachube api key here
 #define FEEDID         00000 // replace your feed ID
 #define USERAGENT      "My Project" // user agent is the project name
@@ -38,15 +42,20 @@ boolean lastConnected = false;      // state of the connection last time through
 const int postingInterval = 10000;  //delay between updates to Pachube.com
 
 void setup() {
-  // start serial port:
   Serial.begin(9600);
+  Serial.println("Attempting to connect to Wifi network...");
+  Serial.print("SSID: ");
+  Serial.println(ssid);
+
   status = WiFi.begin(ssid, pass);
   if ( status != WL_CONNECTED) { 
     Serial.println("Couldn't get a wifi connection");
+    // don't do anything else:
     while(true);
   } 
   else {
     Serial.println("Connected to wifi");
+    printWifiStatus();
   }
 }
 
@@ -119,8 +128,8 @@ void sendData(int thisData) {
     Serial.println();
     Serial.println("disconnecting.");
     client.stop();
-    lastConnected = client.connected();
   }
+  lastConnected = client.connected();
 }
 
 
@@ -144,3 +153,23 @@ int getLength(int someValue) {
   return digits;
 }
 
+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: ");
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+
+
+
+
+

WiFi/examples/WifiPachubeClientString/WifiPachubeClientString.ino

@@ -4,6 +4,13 @@
  This sketch connects an analog sensor to Pachube (http://www.pachube.com)
  using a Arduino Wifi shield.
  
+ This example is written for a network using WPA encryption. For 
+ WEP or WPA, change the Wifi.begin() call accordingly.
+ 
+ This example has been updated to use version 2.0 of the Pachube.com API. 
+ To make it work, create a feed with a datastream, and give it the ID
+ sensor1. Or change the code below to match your feed.
+ 
  This example uses the String library, which is part of the Arduino core from
  version 0019.  
  
@@ -11,7 +18,7 @@
  * Analog sensor attached to analog in 0
  * Wifi shield attached to pins 10, 11, 12, 13
  
- created 2 March 2012
+ created 4 March 2012
  by Tom Igoe
  
  This code is in the public domain.
@@ -125,3 +132,5 @@ void sendData(String thisData) {
     lastConnected = client.connected();
   }
 }
+
+

WiFi/examples/WifiTwitterClient/WifiTwitterClient.ino

@@ -0,0 +1,143 @@
+/*
+  Wifi Twitter Client with Strings
+ 
+ This sketch connects to Twitter using using an Arduino WiFi shield. 
+ It parses the XML returned, and looks for <text>this is a tweet</text>
+ 
+ This example is written for a network using WPA encryption. For 
+ WEP or WPA, change the Wifi.begin() call accordingly.
+ 
+ This example uses the String library, which is part of the Arduino core from
+ version 0019.  
+ 
+ Circuit:
+ * WiFi shield attached to pins 10, 11, 12, 13
+ 
+ created 4 Mar 2012
+ by Tom Igoe
+ 
+ This code is in the public domain.
+ 
+ */
+#include <SPI.h>
+#include <WiFi.h>
+
+char ssid[] = "YourNetwork"; //  your network SSID (name) 
+char pass[] = "password";    // your network password (use for WPA, or use as key for WEP)
+int keyIndex = 0;            // your network key Index number (needed only for WEP)
+
+
+// initialize the library instance:
+WiFiClient client;
+
+const unsigned long requestInterval = 30*1000;    // delay between requests; 30 seconds
+
+IPAddress server(199,59,149,200);      // api.twitter.com
+
+boolean requested;                     // whether you've made a request since connecting
+unsigned 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");
+    printWifiStatus();
+    connectToServer();
+  }
+}
+
+
+
+void loop()
+{
+  if (client.connected()) {
+    if (client.available()) {
+      // read incoming bytes:
+      char inChar = client.read();
+      
+      // 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(server, 80)) {
+    Serial.println("making HTTP request...");
+    // make HTTP GET request to twitter:
+    client.println("GET /1/statuses/user_timeline.xml?screen_name=arduinoteam HTTP/1.1");
+    client.println("HOST:api.twitter.com");
+    client.println();
+  }
+  // note the time of this connect attempt:
+  lastAttemptTime = millis();
+}   
+
+
+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: ");
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+

WiFi/examples/WifiWebClient/WifiWebClient.ino

@@ -0,0 +1,103 @@
+
+/*
+  Web client
+ 
+ This sketch connects to a website (http://www.google.com)
+ using a WiFi shield.
+ 
+  This example is written for a network using WPA encryption. For 
+ WEP or WPA, change the Wifi.begin() call accordingly.
+
+ This example is written for a network using WPA encryption. For 
+ WEP or WPA, change the Wifi.begin() call accordingly.
+ 
+ Circuit:
+ * WiFi shield attached
+ 
+ created 13 July 2010
+ by dlf (Metodo2 srl)
+ modified 4 Mar 2012
+ by Tom Igoe
+ */
+
+
+#include <SPI.h>
+#include <WiFi.h>
+
+char ssid[] = "YourNetwork"; //  your network SSID (name) 
+char pass[] = "password";    // your network password (use for WPA, or use as key for WEP)
+int keyIndex = 0;            // your network key Index number (needed only for WEP)
+
+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):
+WiFiClient client;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Attempting to connect to Wifi network...");
+  Serial.print("SSID: ");
+  Serial.println(ssid);
+
+  status = WiFi.begin(ssid, pass);
+  if ( status != WL_CONNECTED) { 
+    Serial.println("Couldn't get a wifi connection");
+    // don't do anything else:
+    while(true);
+  } 
+  else {
+    Serial.println("Connected to wifi");
+    printWifiStatus();
+    Serial.println("\nStarting connection to server...");
+    // if you get a connection, report back via serial:
+    if (client.connect(server, 80)) {
+      Serial.println("connected to server");
+      // 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 from server.");
+    client.stop();
+
+    // do nothing forevermore:
+    while(true);
+  }
+}
+
+
+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: ");
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}
+
+
+
+

WiFi/examples/WifiWebServer/WifiWebServer.ino

@@ -0,0 +1,113 @@
+/*
+  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 4 Mar 2012
+ by Tom Igoe
+ */
+
+
+#include <SPI.h>
+#include <WiFi.h>
+
+char ssid[] = "YourNetwork"; //  your network SSID (name) 
+char pass[] = "password";    // your network password (use for WPA, or use as key for WEP)
+int keyIndex = 0;            // your network key Index number (needed only for WEP)
+
+int status = WL_IDLE_STATUS;
+
+WiFiServer server(80);
+
+void setup() {
+  // initialize serial:
+  Serial.begin(9600);
+  Serial.println("Attempting to connect to Wifi 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 {
+    server.begin();
+    Serial.print("Connected to wifi.");
+    printWifiStatus();
+  }
+}
+
+
+void loop() {
+  // listen for incoming clients
+  WiFiClient client = server.available();
+  if (client) {
+    // an http request ends with a blank line
+    boolean currentLineIsBlank = true;
+    while (client.connected()) {
+      if (client.available()) {
+        char c = client.read();
+        // 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();
+          client.println("<html>");
+          // output the value of each analog input pin
+          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
+            client.print("analog input ");
+            client.print(analogChannel);
+            client.print(" is ");
+            client.print(analogRead(analogChannel));
+            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();
+  }
+}
+
+
+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: ");
+
+  // print the received signal strength:
+  long rssi = WiFi.RSSI();
+  Serial.print("signal strength (RSSI):");
+  Serial.print(rssi);
+  Serial.println(" dBm");
+}