Try using this sketch but adapt the static IP addresses to be within your network. This one is for 192.168.1.190 as self-assigned IP. This very quickly tests if DHCP is the problem.
#include <Arduino.h>
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
#define ETH_SPI_BUS HSPI
#define ETH_MOSI 13
#define ETH_MISO 12
#define ETH_SCLK 14
#define ETH_CS 15
SPIClass ethernetSPI(ETH_SPI_BUS);
void setup()
{
// You can use Ethernet.init(pin) to configure the CS pin and SPI
// Init with specific pin settings from above.
Ethernet.init(ETH_CS, ðernetSPI, ETH_SCLK, ETH_MISO, ETH_MOSI);
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial)
{
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("Ethernet WebServer Example");
// start the Ethernet connection and the server:
// use static IPs. Self-assign 192.168.0.37, set gateway & DNS as 192.168.0.1
// this should match your home network settings
IPAddress ip(192,168,0,37);
IPAddress dns(192,168,0,1);
IPAddress gateway(192,168,0,1);
Serial.println("Trying to recognize hardware and join via static IP...");
Ethernet.begin(mac, ip, dns, gateway);
Serial.println("Got out of Ethernet.begin.");
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware)
{
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true)
{
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF)
{
Serial.println("Ethernet cable is not connected.");
}
// start the server
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop()
{
// listen for incoming clients
EthernetClient client = server.available();
if (client)
{
Serial.println("new client");
// an HTTP request ends with a blank line
bool currentLineIsBlank = true;
while (client.connected())
{
if (client.available())
{
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the HTTP request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank)
{
// send a standard HTTP response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
// output the value of each analog input pin, 8 channels for now
for (int analogChannel = 0; analogChannel < 8; analogChannel++)
{
int sensorReading = analogRead(analogInputToDigitalPin(analogChannel));
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(sensorReading);
client.println("<br />");
}
client.println("</html>");
break;
}
if (c == '\n')
{
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r')
{
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}