Skip to content

ESP32 + W5500 (SPI Ethernet) TCP Client Example — Full Guide

A complete ESP32 + W5500 TCP client example using SPI Ethernet, static IP, and ESP-IDF 5.5.x. Reliable wired networking for industrial IoT.

Grace_Koo

Published November 28, 2025

112 UCC

25 WCC

11 VAR

ESP32 + W5500 (SPI Ethernet) TCP Client Example — Full Guide

Components

Hardware components
W5500

WIZnet - W5500

x 1

WIZ550io

WIZnet - WIZ550io

x 1

ESP32

Espressif - ESP32

x 1

Software Apps and online services
Visual Studio 2015

microsoft - Visual Studio 2015

x 1

WIZnet parts

Project description

1️⃣ Overview ESP32 includes built-in Wi-Fi, but for industrial, high-noise, or secure environments, wired Ethernet (W5500) is more stable and predictable. This guide explains how to use ESP32 + WIZ550io(W5500) with ESP-IDF 5.5.x, covering: Example project creation command Hardware wiring Full menuconfig settings Ethernet initialization Build & flash Testing (TCP/iperf) Everything is aligned with your exact GPIO configuration. 2️⃣ Install ESP-IDF After installing ESP-IDF Tools: install.bat export.bat Check version: idf.py --version Expected: ESP-IDF v5.5.1 3️⃣ Create an Example Project (TCP…

Keep reading with a free account

Guests can read 15 projects per visit. Log in or create a free account to read the full description, open the documents and join the comments.

Similar projects you might like