[136] | 1 | /*
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| 2 | DHCP-based IP printer
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| 3 |
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| 4 | This sketch uses the DHCP extensions to the Ethernet library
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| 5 | to get an IP address via DHCP and print the address obtained.
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| 6 | using an Arduino Wiznet Ethernet shield.
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| 7 |
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| 8 | Circuit:
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| 9 | * Ethernet shield attached to pins 10, 11, 12, 13
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| 10 |
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| 11 | created 12 April 2011
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| 12 | modified 9 Apr 2012
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| 13 | by Tom Igoe
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| 14 |
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| 15 | */
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| 16 |
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| 17 | #include <SPI.h>
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| 18 | #include <Ethernet2.h>
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| 19 |
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| 20 | // Enter a MAC address for your controller below.
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| 21 | // Newer Ethernet shields have a MAC address printed on a sticker on the shield
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| 22 | byte mac[] = {
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| 23 | 0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
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| 24 | };
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| 25 |
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| 26 | // Initialize the Ethernet client library
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| 27 | // with the IP address and port of the server
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| 28 | // that you want to connect to (port 80 is default for HTTP):
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| 29 | EthernetClient client;
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| 30 |
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| 31 | void setup() {
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| 32 | // Open serial communications and wait for port to open:
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| 33 | Serial.begin(9600);
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| 34 | // this check is only needed on the Leonardo:
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| 35 | while (!Serial) {
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| 36 | ; // wait for serial port to connect. Needed for Leonardo only
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| 37 | }
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| 38 |
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| 39 | // start the Ethernet connection:
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| 40 | if (Ethernet.begin(mac) == 0) {
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| 41 | Serial.println("Failed to configure Ethernet using DHCP");
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| 42 | // no point in carrying on, so do nothing forevermore:
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| 43 | for (;;)
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| 44 | ;
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| 45 | }
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| 46 | // print your local IP address:
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| 47 | Serial.print("My IP address: ");
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| 48 | for (byte thisByte = 0; thisByte < 4; thisByte++) {
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| 49 | // print the value of each byte of the IP address:
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| 50 | Serial.print(Ethernet.localIP()[thisByte], DEC);
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| 51 | Serial.print(".");
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| 52 | }
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| 53 | Serial.println();
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| 54 | }
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| 55 |
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| 56 | void loop() {
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| 57 |
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| 58 | }
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| 59 |
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| 60 |
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