---
title: "Unofficial Zephyr board with W55RP20-EVB-Pico"
url: "https://maker.wiznet.io/josephsr/resellers/unofficial-zephyr-board-with-w55rp20-evb-pico/"
markdown_url: "https://maker.wiznet.io/josephsr/resellers/unofficial-zephyr-board-with-w55rp20-evb-pico/md"
type: "VAR: Value-Added Reseller Products"
author: "ondras12345"
author_url: "https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "ondras12345"
original_url: "https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico"
published: "2025-09-24"
language: "en"
likes: 0
views: 843
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Unofficial Zephyr board with W55RP20-EVB-Pico

> Minimal Zephyr board scaffold for W55RP20-EVB-Pico; enable with BOARD_ROOT and BOARD w55rp20_evb_pico in your app CMake.

Original author: ondras12345 (source: https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

## Documents and links

- [zephyr-board-w55rp20_evb_pico](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico) (code)

## Article

### Introduction

This repository ships an **unofficial Zephyr DeviceTree board definition** for **WIZnet W55RP20-EVB-Pico**. It contains a concise README and a board directory under `boards/wiznet/w55rp20_evb_pico/`. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### WIZnet product integration

Board referenced: **W55RP20-EVB-Pico** (RP2040 + WIZnet **W5500** family).

Purpose: let a Zephyr **application** select the board through CMake variables documented in the README. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

![](https://maker.wiznet.io/upload/ckeditor5/447085285%5F1758811151%2Epng)

### Project structure & languages

Path: `boards/wiznet/w55rp20_evb_pico/`, plus `README.md` at root.

Languages panel shows **CMake** (board scaffold). [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### Build & test quickly (app-side)

Place this repo in your **app** workspace and apply the two lines above.

Build a Zephyr **net sample** (e.g., sockets echo server) targeting `w55rp20_evb_pico`.

If you need Ethernet, add a **W5500** node in your **overlay DTS** (SPI + `int-gpios` + `reset-gpios`) and enable W5500 Kconfig options per Zephyr docs.

### Evidence block

README usage and board directory listing on the repo page. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### Applications & next steps

Use it as a lightweight **board-selection scaffold**; keep overlays/configs in your app.

Next: add a minimal `prj.conf` and DTS overlay snippet for faster Ethernet bring-up.

---

### 소개

이 저장소는 **WIZnet W55RP20-EVB-Pico** 대상의 **비공식 Zephyr 디바이스트리 보드 정의**를 제공합니다. 루트 README와 `boards/wiznet/w55rp20_evb_pico/` 경로가 확인됩니다. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### WIZnet 통합

참조 보드: **W55RP20-EVB-Pico**(RP2040 + WIZnet **W5500** 계열).

목적: README에 설명된 CMake 변수로 **애플리케이션**에서 보드를 선택할 수 있도록 함. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

![](https://maker.wiznet.io/upload/ckeditor5/447085285%5F1758811250%2Epng)

### 사용법(README 발췌)

애플리케이션의 `CMakeLists.txt`에 다음을 추가:

`set(BOARD_ROOT ${CMAKE_CURRENT_LIST_DIR}/zephyr-board-w55rp20_evb_pico) set(BOARD w55rp20_evb_pico)`

(README의 지침과 동일) [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### 구조 & 언어

경로: `boards/wiznet/w55rp20_evb_pico/`, 루트 `README.md`.

언어 패널: **CMake**(보드 스캐폴드). [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### 빠른 빌드 & 테스트(앱 기준)

본 레포를 **애플리케이션** 워크스페이스에 둔 뒤 CMake 두 줄을 적용.

`w55rp20_evb_pico` 대상으로 Zephyr **네트 샘플**(예: sockets echo server) 빌드.

이더넷 필요 시, 애플리케이션 **overlay DTS**에 **W5500** 노드(SPI + `int-gpios` + `reset-gpios`) 추가 및 관련 Kconfig 활성화.

### 근거 블록

README 사용법과 보드 디렉토리 표기. [GitHub](https://github.com/ondras12345/zephyr-board-w55rp20_evb_pico)

### 활용 & 다음 단계

**보드 선택 스캐폴드**로 활용하고, 오버레이/설정은 앱 쪽에 유지.

다음: 최소 `prj.conf`와 DTS 오버레이 예시 추가로 이더넷 초기화 가속.

---

Source: https://maker.wiznet.io/josephsr/resellers/unofficial-zephyr-board-with-w55rp20-evb-pico/