---
title: "Connected the Ethernet communication without iolibrary"
url: "https://maker.wiznet.io/WIZnet/projects/connected-the-ethernet-communication-without-iolibrary/"
markdown_url: "https://maker.wiznet.io/WIZnet/projects/connected-the-ethernet-communication-without-iolibrary/md"
type: "UCC: User Created Content"
author: "ppcchh1"
author_url: "https://blog.naver.com/ppcchh1"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "ppcchh1"
original_url: "https://blog.naver.com/ppcchh1"
published: "2023-02-10"
language: "ko"
hardware: ["WIZnet W5500"]
likes: 2
views: 213
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Connected the Ethernet communication without iolibrary

> iolibrary 사용하지 않고 W5500을 이용하여 직접 프로그래밍을 한다. 또한 자세한 흐름도를 통해 동작상태를 확인할수 있다.

Original author: ppcchh1 (source: https://blog.naver.com/ppcchh1)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

첫번째. SPI 통신 분석

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_1-300x178.png)

SPI 프레임의 상세 설정

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_2-300x107.png)

<https://blog.naver.com/ppcchh1/222192758736>

두번째. 주요 레지스터와 칩 설정 방법

통신을 위한 사용해야하는 Common Register 및 Socket Register 소개 및 설명입니다.

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_3-3-300x147.png)

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_3-4-300x145.png)

<https://blog.naver.com/ppcchh1/222200158956>

세번째. 간단한 서버 열기

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_3-300x169.png)

W5500을 이용하여 외부로 접속하는 방법을 간단히 도식화 한 그림입니다.

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_3-1-220x300.png)

W5500이 실제 동작하는 흐름도입니다.

이건 단순히 동작하는 흐름도이며, 레지스터 흐름도는 다음과 같습니다.

![](https://maker.wiznet.io/uploads/2021/04/ethernetW5500_3-2-219x300.png)

<https://blog.naver.com/ppcchh1/222205135776>

---

Source: https://maker.wiznet.io/WIZnet/projects/connected-the-ethernet-communication-without-iolibrary/