| /* | |
| 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 31 May 2012 | |
| by Tom Igoe | |
| */ | |
| char ssid[] = "yourNetwork"; // your network SSID (name) | |
| char pass[] = "secretPassword"; // 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; | |
| // if you don't want to use DNS (and reduce your sketch size) | |
| // use the numeric IP instead of the name for the server: | |
| //IPAddress server(74,125,232,128); // numeric IP for Google (no DNS) | |
| char server[] = "www.google.com"; // name address for Google (using DNS) | |
| // 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() { | |
| //Initialize serial and wait for port to open: | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; // wait for serial port to connect. Needed for native USB port 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); | |
| } | |
| String fv = WiFi.firmwareVersion(); | |
| if (fv != "1.1.0") { | |
| Serial.println("Please upgrade the firmware"); | |
| } | |
| // 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); | |
| } | |
| 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/1.1"); | |
| client.println("Host: www.google.com"); | |
| client.println("Connection: close"); | |
| client.println(); | |
| } | |
| } | |
| void loop() { | |
| // if there are incoming bytes available | |
| // from the server, read them and print them: | |
| while (client.available()) { | |
| char c = client.read(); | |
| Serial.write(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: "); | |
| Serial.println(ip); | |
| // print the received signal strength: | |
| long rssi = WiFi.RSSI(); | |
| Serial.print("signal strength (RSSI):"); | |
| Serial.print(rssi); | |
| Serial.println(" dBm"); | |
| } | |