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en:arduino:libraries:ethernetlocalip

Ethernet

Ethernet.localIP()

Description

Obtains the IP address of the Ethernet shield. Useful when the address is auto assigned through DHCP.

Syntax

Ethernet.localIP();

Parameters

none

Returns

the IP address

Example

#include <SPI.h>
#include <Ethernet.h>
 
// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = {  
  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02 };
 
// Initialize the Ethernet client library
// with the IP address and port of the server 
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;
 
void setup() {
  // start the serial library:
  Serial.begin(9600);
  // start the Ethernet connection:
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing forevermore:
    for(;;)
      ;
  }
  // print your local IP address:
  Serial.println(Ethernet.localIP());
 
}
 
void loop() {
 
}

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本页面的其他翻译:
en/arduino/libraries/ethernetlocalip.txt · 最后更改: 2016/12/25 22:15 (外部编辑)