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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"
100 lines
2.1 KiB
C++
100 lines
2.1 KiB
C++
/*
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DHCP-based IP printer
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This sketch uses the DHCP extensions to the Ethernet library
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to get an IP address via DHCP and print the address obtained.
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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 12 April 2011
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modified 9 Apr 2012
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by Tom Igoe
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modified 02 Sept 2015
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by Arturo Guadalupi
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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[] = {
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0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
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};
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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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// this check is only needed on the Leonardo:
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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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for (;;)
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;
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}
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// print your local IP address:
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printIPAddress();
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}
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void loop() {
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switch (Ethernet.maintain())
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{
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case 1:
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//renewed fail
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Serial.println("Error: renewed fail");
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break;
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case 2:
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//renewed success
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Serial.println("Renewed success");
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//print your local IP address:
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printIPAddress();
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break;
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case 3:
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//rebind fail
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Serial.println("Error: rebind fail");
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break;
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case 4:
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//rebind success
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Serial.println("Rebind success");
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//print your local IP address:
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printIPAddress();
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break;
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default:
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//nothing happened
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break;
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}
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}
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void printIPAddress()
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{
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Serial.print("My IP address: ");
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for (byte thisByte = 0; thisByte < 4; thisByte++) {
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// print the value of each byte of the IP address:
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Serial.print(Ethernet.localIP()[thisByte], DEC);
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Serial.print(".");
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}
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Serial.println();
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}
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