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Diffstat (limited to 'libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino')
-rw-r--r-- | libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino b/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino new file mode 100644 index 0000000..650f74e --- /dev/null +++ b/libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino @@ -0,0 +1,111 @@ +/* + Repeating Web client + + This sketch connects to a a web server and makes a request + using a Wiznet Ethernet shield. 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 DNS, by assigning the Ethernet client with a MAC address, + IP address, and DNS address. + + Circuit: + * Ethernet shield attached to pins 10, 11, 12, 13 + + created 19 Apr 2012 + by Tom Igoe + + http://arduino.cc/en/Tutorial/WebClientRepeating + This code is in the public domain. + + */ + +#include <SPI.h> +#include <Ethernet.h> + +// assign a MAC address for the ethernet controller. +// fill in your address here: +byte mac[] = { + 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; +// fill in an available IP address on your network here, +// for manual configuration: +IPAddress ip(10,0,0,20); + +// fill in your Domain Name Server address here: +IPAddress myDns(1,1,1,1); + +// initialize the library instance: +EthernetClient client; + +char server[] = "www.arduino.cc"; + +unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds +boolean lastConnected = false; // state of the connection last time through the main loop +const unsigned long postingInterval = 60L*1000L; // delay between updates, in milliseconds + // the "L" is needed to use long type numbers + +void setup() { + // start serial port: + Serial.begin(9600); + // give the ethernet module time to boot up: + delay(1000); + // start the Ethernet connection using a fixed IP address and DNS server: + Ethernet.begin(mac, ip, myDns); + // print the Ethernet board/shield's IP address: + Serial.print("My IP address: "); + Serial.println(Ethernet.localIP()); +} + +void loop() { + // if there's incoming data from the net connection. + // send it out the serial port. This is for debugging + // purposes only: + if (client.available()) { + char c = client.read(); + Serial.print(c); + } + + // if there's no net connection, but there was one last time + // through the loop, then stop the client: + if (!client.connected() && lastConnected) { + Serial.println(); + Serial.println("disconnecting."); + client.stop(); + } + + // if you're not connected, and ten seconds have passed since + // your last connection, then connect again and send data: + if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) { + httpRequest(); + } + // store the state of the connection for next time through + // the loop: + lastConnected = client.connected(); +} + +// this method makes a HTTP connection to the server: +void httpRequest() { + // 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: arduino-ethernet"); + 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"); + Serial.println("disconnecting."); + client.stop(); + } +} + + + + |