---
title: "WIZnet W5500 C Library (FreeRTOS) for Embedded Ethernet — AMIRAFRASIAB/W5500"
url: "https://maker.wiznet.io/josephsr/projects/client-supported-lib-for-w5500-lan-module-specially-for-cm4/"
markdown_url: "https://maker.wiznet.io/josephsr/projects/client-supported-lib-for-w5500-lan-module-specially-for-cm4/md"
type: "UCC: User Created Content"
author: "AMIRAFRASIAB"
author_url: "https://github.com/AMIRAFRASIAB/W5500"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "AMIRAFRASIAB"
original_url: "https://github.com/AMIRAFRASIAB/W5500"
published: "2025-09-24"
language: "en"
likes: 0
views: 554
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# WIZnet W5500 C Library (FreeRTOS) for Embedded Ethernet — AMIRAFRASIAB/W5500

> WIZnet W5500 client/driver repo with Client/Driver/Example/FreeRTOS/Official folders and a 1.0.0 tag noting a completed FreeRTOS driver.

Original author: AMIRAFRASIAB (source: https://github.com/AMIRAFRASIAB/W5500)

## Article

### Introduction

This repository provides a **C-language codebase** for the **WIZnet W5500 Ethernet Controller**, with top-level folders `Client/`, `Driver/`, `Example/`, `FreeRTOS/`, and `Official/`. The repo **description** says “Specially for CM4,” and the **1.0.0 tag** states “FreeRTOS Driver completed and doxygen comments added.” [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### WIZnet product integration

Target device: **WIZnet W5500 Ethernet Controller** (hardware TCP/IP over SPI).

Evidence: presence of `Driver/` and `FreeRTOS/` plus the **1.0.0 tag** note about a FreeRTOS driver. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### Software stack overview

Languages: **C 100%** (GitHub panel).

Structure: `Client/`, `Driver/`, `Example/`, `FreeRTOS/`, `Official/`.

Versioning cue: **Tag 1.0.0** with the FreeRTOS driver message. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### Build & toolchain — actionable path

**Clone** and **checkout** the `1.0.0` tag.

Inspect public headers in `Driver/` and `FreeRTOS/` for SPI and **CS/INT/RESET** hooks.

Add a minimal **CMake/Make** in your application to compile the driver plus one file from `Example/` as a smoke test.

If using FreeRTOS, define task stack/priority for W5500 I/O accordingly. **(Build scripts are not published in the repo page.)** [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### Configuration & runtime pointers

Wire your board’s SPI device and GPIO for **CS / INT / RESET** to the driver’s expected hooks.

Add DHCP/static IP bring-up in your app if not present in examples.

### Reproduction checklist

Clone → `git checkout 1.0.0` → add `Driver/` (and `FreeRTOS/`) to your app → wire SPI/GPIO → run a minimal **TCP send/recv** test. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### Evidence block

Repo description: “Client Supported Lib For W5500 LAN Module (**Specially for CM4**).”

Tag text: “**FreeRTOS Driver completed and doxygen comments added**.” [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### Applications & next steps

Uses: deterministic wired telemetry, industrial clients on W5500.

Next: publish a tiny `CMakeLists.txt`, generated Doxygen, and a working echo example.

---

## **WIZnet W5500 C 라이브러리 및 FreeRTOS 드라이버(레포 설명에 CM4 표기)**

### 소개

본 저장소는 **WIZnet W5500**을 위한 **C 언어 코드베이스**로, 루트에 `Client/`, `Driver/`, `Example/`, `FreeRTOS/`, `Official/` 폴더가 있습니다. 저장소 **설명**에 “Specially for CM4” 문구가 있으며, **태그 1.0.0**에는 “FreeRTOS Driver completed and doxygen comments added”라고 명시되어 있습니다. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### WIZnet 통합

대상: **WIZnet W5500 Ethernet Controller**(SPI, HW TCP/IP).

근거: `Driver/`, `FreeRTOS/` 폴더와 **1.0.0 태그**의 FreeRTOS 드라이버 문구.

![](https://maker.wiznet.io/upload/ckeditor5/447085285%5F1758811081%2Epng)

### 소프트웨어 개요

언어: **C 100%**.

구조: `Client/`, `Driver/`, `Example/`, `FreeRTOS/`, `Official/`.

버전 단서: **1.0.0 태그**의 FreeRTOS 문구.

### 빌드 & 툴체인(실행 절차)

저장소 클론 → `1.0.0` 체크아웃.

`Driver/`, `FreeRTOS/` 헤더에서 SPI 및 **CS/INT/RESET** 훅 확인.

애플리케이션 쪽 **CMake/Make**로 드라이버와 `Example/` 일부 빌드.

FreeRTOS 사용 시, W5500 I/O 태스크의 스택/우선순위 설정. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### 구성 & 런타임

보드의 SPI, **CS/INT/RESET** GPIO를 드라이버 훅에 매핑.

DHCP/Static 초기화가 없다면 애플리케이션에서 보강.

### 재현 체크리스트

클론 → `git checkout 1.0.0` → `Driver/`(필요 시 `FreeRTOS/`) 포함 → SPI/GPIO 매핑 → **TCP 송수신** 스모크 테스트. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### 근거 블록

저장소 설명의 **CM4 표기**, **1.0.0 태그**의 FreeRTOS 문구. [GitHub](https://github.com/AMIRAFRASIAB/W5500)

### 활용 & 다음 단계

활용: 유선 텔레메트리, 산업용 클라이언트.

다음: 최소 `CMakeLists.txt`와 동작 예제, Doxygen 페이지 공개.

---

Source: https://maker.wiznet.io/josephsr/projects/client-supported-lib-for-w5500-lan-module-specially-for-cm4/