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Merge branch 'master' of github.com:arduino/Arduino into LUFA_bootloader

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2 parents 4fb17c4 + a69bd00 commit 573d08c4fa767f9c892fd07077bcba76507b817a @zeveland zeveland committed Apr 20, 2012
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  1. +110 −0 libraries/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino
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+/*
+ 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 = 60*1000; // delay between updates, in milliseconds
+
+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();
+ }
+}
+
+
+
+

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