#include <SPI.h>
#include <Ethernet.h>
#include <PubSubClient.h>

int ledPin = 8;

byte mac[]    = {  0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress ip(192, 168, 0, 1);
IPAddress server(192, 168, 0, 229);


void callback(char* topic, byte* payload, unsigned int length) {
  if (payload[0] == '1')
  {
    digitalWrite(ledPin, HIGH);
  }
  if (payload[0] == '0')
  {
    digitalWrite(ledPin, LOW);
  }
}


EthernetClient ethClient;
PubSubClient client(server, 1883, callback, ethClient);

void setup()
{
  pinMode(ledPin , OUTPUT);
  digitalWrite(ledPin, LOW);
  Ethernet.begin(mac, ip);
  if (client.connect("arduinoClient", "testuser", "testpass")) {
    client.subscribe("led");
  }
}


void loop()
{
  client.loop();
}