---
title: "[Dejie Electronics Follow me Episode 4] Basic Task 1: Complete the initialization of the W5500 main"
url: "https://maker.wiznet.io/mark/projects/dejie-electronics-follow-me-episode-4-basic-task-1-complete-the-initialization-of-the-w5500-main/"
markdown_url: "https://maker.wiznet.io/mark/projects/dejie-electronics-follow-me-episode-4-basic-task-1-complete-the-initialization-of-the-w5500-main/md"
type: "UCC: User Created Content"
author: "流行科技"
author_url: "https://bbs.eeworld.com.cn/thread-1272311-1-1.html"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "流行科技"
original_url: "https://bbs.eeworld.com.cn/thread-1272311-1-1.html"
license: "Apache License 2.0 (Apache-2.0)"
published: "2025-12-05"
language: "en"
likes: 0
views: 354
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# [Dejie Electronics Follow me Episode 4] Basic Task 1: Complete the initialization of the W5500 main

> [Dejie Electronics Follow me Episode 4] Basic Task 1: Complete the initialization of the W5500 main control board

Original author: 流行科技 (source: https://bbs.eeworld.com.cn/thread-1272311-1-1.html)

## Article

| Initialization itself has routines; the main issue is library selection. We need to be careful when choosing libraries for Arduino. ![](https://maker.wiznet.io/upload/ckeditor5/206448063%5F1764934250%2Ejpg) Initially, you might encounter a Ping library like this, but you'll need to modify it manually, which is quite troublesome. A user provided a ping library at: <https://github.com/masterx1981/Ethernet/tree/master/> ![](https://maker.wiznet.io/upload/ckeditor5/206448063%5F1764934308%2Ejpg) However, the official documentation currently lists this library as version 2.02. ![](https://maker.wiznet.io/upload/ckeditor5/206448063%5F1764934283%2Ejpg) Someone submitted a question, but there seems to be no response yet. For testing, you can refer to the examples provided by the ICMP_PING library. ```plaintext
#include <SPI.h>        
#include <Dns.h>
#include <Ethernet.h>
#include <EthernetICMP.h>

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; // max address for ethernet shield
IPAddress ip(192,168,1,155); // ip address for ethernet shield
IPAddress pingAddr(192,168,1,3); // ip address to ping

DNSClient dnClient;
SOCKET pingSocket = 0;
EthernetICMPPing  ping(pingSocket, (uint16_t)random(0, 255));

void ping_ip(const IPAddress &pingAddr1)
{
 EthernetICMPEchoReply  echoReply = ping(pingAddr1, 4);
 char buffer [256];
 if (echoReply.status == SUCCESS)
 {
   sprintf(buffer,
           "Reply[%d] from: %d.%d.%d.%d: bytes=%d time=%ldms TTL=%d",
           echoReply.data.seq,
           echoReply.addr[0],
           echoReply.addr[1],
           echoReply.addr[2],
           echoReply.addr[3],
           REQ_DATASIZE,
           millis() - echoReply.data.time,
           echoReply.ttl);
 }
 else
 {
   sprintf(buffer, "Echo request failed; %d", echoReply.status);
 }
 Serial.println(buffer);
 delay(500);
}

void ping_site() {
 dnClient.begin(Ethernet.dnsServerIP());
 const char domains[20] = { "www.baidu.com"};
 IPAddress dstip;

 if (dnClient.getHostByName(domains, dstip) == 1) {
   Serial.print(domains);
   Serial.print(" = ");
   Serial.println(dstip);
   ping_ip(dstip);
 } else{
   Serial.println(F("dns lookup failed"));
 }

}

void setup()
{
 Serial.begin(9600);
 while (!Serial)
   ;
 // You can use Ethernet.init(pin) to configure the CS pin
 //Ethernet.init(10);  // Most Arduino shields
 //Ethernet.init(5);   // MKR ETH shield
 //Ethernet.init(0);   // Teensy 2.0
 //Ethernet.init(20);  // Teensy++ 2.0
 //Ethernet.init(15);  // ESP8266 with Adafruit Featherwing Ethernet
 //Ethernet.init(33);  // ESP32 with Adafruit Featherwing Ethernet
 Ethernet.init(17);  // WIZnet W5100S-EVB-Pico W5500-EVB-Pico W6100-EVB-Pico

 // start Ethernet
 Ethernet.begin(mac, ip);
 // Ethernet.begin(mac, ip, myDns, gateway, subnet);


}

void loop()
{
 // ping_site();
 ping_ip(pingAddr);
}
``` When pinging a website, you still need to obtain the website's IP address before pinging. ![](https://maker.wiznet.io/upload/ckeditor5/206448063%5F1764934359%2Ejpg) Using Wireshark to view the ping of your own host will look like this. |
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Source: https://maker.wiznet.io/mark/projects/dejie-electronics-follow-me-episode-4-basic-task-1-complete-the-initialization-of-the-w5500-main/