Ethernet module W5500 from AliExpress - how to use?

Projects Networking, Protocols, and Devices
15

Hi surfride, thanks for the reply!

I connected the RST to pin 9, and tried this code (with the Adafruit library):

#include <SPI.h>
#include <Ethernet2.h>

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
IPAddress ip(192, 168, 0, 22);

EthernetServer server(80);

void setup() {
  Serial.begin(9600);
 
  pinMode(9, OUTPUT);  
  digitalWrite(9, LOW);
  delayMicroseconds(500);
  digitalWrite(9, HIGH);
  delayMicroseconds(1000);

  Ethernet.begin(mac, ip);
  
  server.begin();
  Serial.print("Server is at ");
  Serial.println(Ethernet.localIP());
}


void loop() {
}

With this I get the very same results, as without resetting:

Server is at 192.80.0.44

If I leave pin 9 on LOW, localIP() reports 0.0.0.0
If I don't set any IP, DHCP just freezes the board.

The strange thing is, that I can set the IP to 10.0.0.10 and with that I can even ping the board, but nothing else would function.

If I try to set an IP with the second byte above 127, I always get some completely different IP from Ethernet.localIP()

I'm about to give up on this one. :confused: