---
title: "W5500_AVR"
url: "https://maker.wiznet.io/Benjamin/projects/w5500-avr/"
markdown_url: "https://maker.wiznet.io/Benjamin/projects/w5500-avr/md"
type: "UCC: User Created Content"
author: "Hessi02"
author_url: "https://github.com/Hessi02/W5500_AVR"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Hessi02"
original_url: "https://github.com/Hessi02/W5500_AVR"
published: "2024-03-19"
language: "en"
tags: ["W5500"]
hardware: ["WIZnet W5500"]
likes: 0
views: 1834
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# W5500_AVR

> A Wiznet W5500 driver for the AVR microcontroller.

Original author: Hessi02 (source: https://github.com/Hessi02/W5500_AVR)

## 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/))

## Documents and links

- [inc, lib, src, CMakeLists](https://github.com/Hessi02/W5500_AVR) (code)

## Article

Today, we dive into an exciting open-source project hosted on GitHub, named "W5500_AVR". This project aims to provide a comprehensive driver for the Wiznet W5500 chip, specifically tailored for the AVR microcontroller series. Developed and maintained by a dedicated community of developers, the W5500_AVR project offers a powerful and flexible framework for incorporating Ethernet functionality into AVR-based systems.

The W5500_AVR project on GitHub is a testament to the power of open-source collaboration. Developed and maintained by a community of passionate developers, this project provides a comprehensive driver and library for interfacing the Wiznet W5500 chip with AVR microcontrollers. The project's goal is to simplify the integration of Ethernet connectivity into AVR-based systems, enabling developers to leverage the full potential of the W5500 chip.

The project's repository is well-structured, with clear separation of concerns. The "src" directory contains the core source files for the W5500 driver, including low-level SPI communication, socket management, and network protocol handling. The "inc" directory holds the necessary header files, defining the APIs and data structures used throughout the project.

![](https://maker.wiznet.io/upload/ckeditor5/472268825%5F1712066642%2Epng)

One of the standout features of the W5500_AVR project is its focus on abstraction and modularity. The driver is designed to provide a high-level interface for managing sockets, making it easier for developers to establish and handle network connections. The project includes classes such as "wiznet_w5500", "tcp_socket", and "udp_socket", which encapsulate the complexities of the W5500 chip and provide intuitive methods for sending and receiving data.

The project also places a strong emphasis on interrupt-driven communication. The W5500 chip supports hardware interrupts, allowing efficient handling of network events without the need for constant polling. The W5500_AVR driver leverages this capability, enabling asynchronous communication and minimizing the load on the host microcontroller.

To facilitate seamless integration, the W5500_AVR project provides a set of well-documented examples. These examples demonstrate how to configure the driver, establish network connections, send and receive data, and handle various network scenarios. The "basic_host" example, for instance, showcases a simple TCP server implementation using the W5500 driver.

```cpp
/**
 *  \file   basic_host.cpp
 *  \brief  This is an example file for an basic host send operation.
 *  
 *  The W5500 listens on PORT 1000. After a new connection is established,
 *  the chip sends a message to the client.
 */

#include "w5500.hpp"

int main(void)
{
    W5500 chip = W5500("00-08-dc-ff-ff-ff", "192.168.178.1", "255.255.255.0", "192.168.178.101");

    TcpSocket socket;
    socket.bind(&chip, 1000);
    socket.open();
    socket.listen();

    socket.waitForConnected();
    socket.send("Successfully connected to 192.168.178.101.");

    return 0;
}
```

The project's documentation is thorough and user-friendly. The README file provides a clear overview of the project's structure, installation instructions, and usage guidelines. It also includes a changelog, highlighting the recent updates and improvements made to the driver.

One of the key strengths of the W5500_AVR project is its active community of contributors. The project welcomes contributions from developers worldwide, fostering a collaborative environment where ideas are shared, and improvements are made continuously. The commit history reveals a steady stream of updates, bug fixes, and feature enhancements, demonstrating the project's ongoing evolution and stability.

The W5500_AVR project on GitHub is a shining example of the power of open-source collaboration in the embedded systems domain. By providing a comprehensive and well-maintained driver for the Wiznet W5500 Ethernet controller, this project empowers developers to easily integrate network connectivity into their AVR-based projects.

With its focus on abstraction, modularity, and interrupt-driven communication, the W5500_AVR driver offers a robust and efficient solution for network communication. The project's well-structured codebase, extensive documentation, and active community support make it an invaluable resource for developers working with the AVR microcontroller series.

Whether you are building an IoT device, a network-enabled embedded system, or any other project requiring Ethernet connectivity, the W5500_AVR project is definitely worth exploring. By leveraging the power of the Wiznet W5500 chip and the expertise of the open-source community, you can accelerate your development process and create reliable and feature-rich networked applications.

---

Source: https://maker.wiznet.io/Benjamin/projects/w5500-avr/