Hi,

I'am trying to use the DFR0850 POE shield with an Arduino Uno R3 board.

My Arduino IDE is in version 1.8.19.

I downloaded and installed the right library from the this website.

I try the following program, provided on the site too.

I removed the E-RST jumper.

I connected shield to a non-POE switch, to a POE switch with the same result.

The Ethernet switch connects to a laptop whose address is 192.168.1.254.

I have try with 2 different shields purchased.

The result is always the same :

“server is at 0.0.0.0”

Thank for your help.

/*
Web Server

A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)

created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe

*/

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

#define SS 10U //W5500 CS
#define RST 11U //W5500 RST

// 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
};
IPAddress ip(192, 168, 1, 177);

// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);

void setup() {

pinMode(SS, OUTPUT);
pinMode(RST, OUTPUT);

digitalWrite(SS, LOW);

digitalWrite(RST,HIGH); //Reset this module
delay(200);
digitalWrite(RST,LOW);
delay(200);
digitalWrite(RST,HIGH);
delay(200);
// Open serial communications and wait for port to open:
Serial.begin(19200);
//while (!Serial) {
// ; // wait for serial port to connect. Needed for Leonardo only
//}

// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.println(" ");
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
boolean 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
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
int sensorReading = analogRead(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");
}
}