| /* | |
| Repeating Wifi Web Client | |
| This sketch connects to a a web server and makes a request | |
| using an Arduino Wifi shield. | |
| Circuit: | |
| * WiFi shield attached to pins SPI pins and pin 7 | |
| created 23 April 2012 | |
| modified 31 May 2012 | |
| by Tom Igoe | |
| modified 13 Jan 2014 | |
| by Federico Vanzati | |
| http://www.arduino.cc/en/Tutorial/WifiWebClientRepeating | |
| This code is in the public domain. | |
| */ | |
| 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; | |
| // Initialize the Wifi client library | |
| WiFiClient client; | |
| // server address: | |
| char server[] = "www.arduino.cc"; | |
| //IPAddress server(64,131,82,241); | |
| unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds | |
| const unsigned long postingInterval = 10L * 1000L; // delay between updates, in milliseconds | |
| 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); | |
| } | |
| // you're connected now, so print out the status: | |
| printWifiStatus(); | |
| } | |
| void loop() { | |
| // if there's incoming data from the net connection. | |
| // send it out the serial port. This is for debugging | |
| // purposes only: | |
| while (client.available()) { | |
| char c = client.read(); | |
| Serial.write(c); | |
| } | |
| // if ten seconds have passed since your last connection, | |
| // then connect again and send data: | |
| if (millis() - lastConnectionTime > postingInterval) { | |
| httpRequest(); | |
| } | |
| } | |
| // this method makes a HTTP connection to the server: | |
| void httpRequest() { | |
| // close any connection before send a new request. | |
| // This will free the socket on the WiFi shield | |
| client.stop(); | |
| // if there's a successful connection: | |
| if (client.connect(server, 80)) { | |
| Serial.println("connecting..."); | |
| // send the HTTP PUT request: | |
| client.println("GET /latest.txt HTTP/1.1"); | |
| client.println("Host: www.arduino.cc"); | |
| client.println("User-Agent: ArduinoWiFi/1.1"); | |
| client.println("Connection: close"); | |
| client.println(); | |
| // note the time that the connection was made: | |
| lastConnectionTime = millis(); | |
| } else { | |
| // if you couldn't make a connection: | |
| Serial.println("connection failed"); | |
| } | |
| } | |
| 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"); | |
| } | |