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Ethernet

Ethernet.begin()

Description

Initializes the ethernet library and network settings.

Syntax

Ethernet.begin(mac, ip);
Ethernet.begin(mac, ip, gateway);
Ethernet.begin(mac, ip, gateway, subnet);

Parameters

mac: the MAC (Media access control) address for the device (array of 6 bytes). this is the Ethernet hardware address of your shield. Newer Arduino Ethernet Shields include a sticker with the device's MAC address. For older shields, choose your own.

ip: the IP address of the device (array of 4 bytes)

gateway: the IP address of the network gateway (array of 4 bytes). optional: defaults to the device IP address with the last octet set to 1

subnet: the subnet mask of the network (array of 4 bytes). optional: defaults to 255.255.255.0

Returns

None

Example

#include <Ethernet.h>

// the media access control (ethernet hardware) address for the shield:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  
//the IP address for the shield:
byte ip[] = { 10, 0, 0, 177 };    

void setup()
{
  Ethernet.begin(mac, ip);
}

void loop () {}

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This reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License and is based on the Arduino reference. Code samples in the reference are released into the public domain.

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