[136] | 1 | /*
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| 2 | Repeating Web client
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| 3 |
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| 4 | This sketch connects to a a web server and makes a request
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| 5 | using a Wiznet Ethernet shield. You can use the Arduino Ethernet shield, or
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| 6 | the Adafruit Ethernet shield, either one will work, as long as it's got
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| 7 | a Wiznet Ethernet module on board.
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| 8 |
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| 9 | This example uses DNS, by assigning the Ethernet client with a MAC address,
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| 10 | IP address, and DNS address.
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| 11 |
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| 12 | Circuit:
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| 13 | * Ethernet shield attached to pins 10, 11, 12, 13
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| 14 |
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| 15 | created 19 Apr 2012
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| 16 | by Tom Igoe
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| 17 | modified 21 Jan 2014
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| 18 | by Federico Vanzati
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| 19 |
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| 20 | http://arduino.cc/en/Tutorial/WebClientRepeating
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| 21 | This code is in the public domain.
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| 22 |
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| 23 | */
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| 24 |
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| 25 | #include <SPI.h>
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| 26 | #include <Ethernet2.h>
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| 27 |
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| 28 | // assign a MAC address for the ethernet controller.
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| 29 | // fill in your address here:
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| 30 | byte mac[] = {
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| 31 | 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
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| 32 | };
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| 33 | // fill in an available IP address on your network here,
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| 34 | // for manual configuration:
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| 35 | IPAddress ip(192, 168, 1, 177);
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| 36 |
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| 37 | // fill in your Domain Name Server address here:
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| 38 | IPAddress myDns(1, 1, 1, 1);
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| 39 |
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| 40 | // initialize the library instance:
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| 41 | EthernetClient client;
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| 42 |
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| 43 | char server[] = "www.arduino.cc";
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| 44 | //IPAddress server(64,131,82,241);
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| 45 |
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| 46 | unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
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| 47 | const unsigned long postingInterval = 10L * 1000L; // delay between updates, in milliseconds
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| 48 | // the "L" is needed to use long type numbers
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| 49 |
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| 50 | void setup() {
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| 51 | // start serial port:
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| 52 | Serial.begin(9600);
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| 53 | while (!Serial) {
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| 54 | ; // wait for serial port to connect. Needed for Leonardo only
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| 55 | }
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| 56 |
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| 57 | // give the ethernet module time to boot up:
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| 58 | delay(1000);
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| 59 | // start the Ethernet connection using a fixed IP address and DNS server:
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| 60 | Ethernet.begin(mac, ip, myDns);
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| 61 | // print the Ethernet board/shield's IP address:
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| 62 | Serial.print("My IP address: ");
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| 63 | Serial.println(Ethernet.localIP());
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| 64 | }
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| 65 |
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| 66 | void loop() {
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| 67 | // if there's incoming data from the net connection.
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| 68 | // send it out the serial port. This is for debugging
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| 69 | // purposes only:
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| 70 | if (client.available()) {
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| 71 | char c = client.read();
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| 72 | Serial.write(c);
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| 73 | }
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| 74 |
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| 75 | // if ten seconds have passed since your last connection,
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| 76 | // then connect again and send data:
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| 77 | if (millis() - lastConnectionTime > postingInterval) {
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| 78 | httpRequest();
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| 79 | }
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| 80 |
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| 81 | }
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| 82 |
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| 83 | // this method makes a HTTP connection to the server:
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| 84 | void httpRequest() {
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| 85 | // close any connection before send a new request.
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| 86 | // This will free the socket on the WiFi shield
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| 87 | client.stop();
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| 88 |
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| 89 | // if there's a successful connection:
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| 90 | if (client.connect(server, 80)) {
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| 91 | Serial.println("connecting...");
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| 92 | // send the HTTP PUT request:
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| 93 | client.println("GET /latest.txt HTTP/1.1");
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| 94 | client.println("Host: www.arduino.cc");
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| 95 | client.println("User-Agent: arduino-ethernet");
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| 96 | client.println("Connection: close");
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| 97 | client.println();
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| 98 |
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| 99 | // note the time that the connection was made:
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| 100 | lastConnectionTime = millis();
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| 101 | }
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| 102 | else {
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| 103 | // if you couldn't make a connection:
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| 104 | Serial.println("connection failed");
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| 105 | }
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| 106 | }
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| 107 |
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| 108 |
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