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9eaea4205d
According to #3786 removed the reference to Leonardo only in while(!Serial) of the examples. Changed in in "wait for serial port to connect. Needed for native USB port only"
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/*
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Web client
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This sketch connects to a website (http://www.google.com)
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using an Arduino Wiznet Ethernet shield.
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Circuit:
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* Ethernet shield attached to pins 10, 11, 12, 13
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created 18 Dec 2009
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by David A. Mellis
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modified 9 Apr 2012
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by Tom Igoe, based on work by Adrian McEwen
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*/
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#include <SPI.h>
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#include <Ethernet.h>
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// Enter a MAC address for your controller below.
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// Newer Ethernet shields have a MAC address printed on a sticker on the shield
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byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
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// if you don't want to use DNS (and reduce your sketch size)
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// use the numeric IP instead of the name for the server:
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//IPAddress server(74,125,232,128); // numeric IP for Google (no DNS)
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char server[] = "www.google.com"; // name address for Google (using DNS)
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// Set the static IP address to use if the DHCP fails to assign
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IPAddress ip(192, 168, 0, 177);
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// Initialize the Ethernet client library
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// with the IP address and port of the server
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// that you want to connect to (port 80 is default for HTTP):
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EthernetClient client;
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void setup() {
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// Open serial communications and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for native USB port only
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}
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// start the Ethernet connection:
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if (Ethernet.begin(mac) == 0) {
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Serial.println("Failed to configure Ethernet using DHCP");
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// no point in carrying on, so do nothing forevermore:
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// try to congifure using IP address instead of DHCP:
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Ethernet.begin(mac, ip);
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}
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// give the Ethernet shield a second to initialize:
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delay(1000);
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Serial.println("connecting...");
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// if you get a connection, report back via serial:
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if (client.connect(server, 80)) {
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Serial.println("connected");
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// Make a HTTP request:
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client.println("GET /search?q=arduino HTTP/1.1");
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client.println("Host: www.google.com");
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client.println("Connection: close");
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client.println();
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} else {
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// kf you didn't get a connection to the server:
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Serial.println("connection failed");
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}
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}
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void loop() {
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// if there are incoming bytes available
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// from the server, read them and print them:
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if (client.available()) {
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char c = client.read();
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Serial.print(c);
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}
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// if the server's disconnected, stop the client:
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if (!client.connected()) {
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Serial.println();
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Serial.println("disconnecting.");
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client.stop();
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// do nothing forevermore:
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while (true);
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}
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}
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