How to Connect STM32 and W5500 to OneNET Cloud Using MQTT over Ethernet?
This project demonstrates how to connect STM32 and the WIZnet W5500 Ethernet controller to the OneNET cloud platform using MQTT.
How to Connect STM32 and W5500 to OneNET Cloud Using MQTT over Ethernet?
(STM32와 W5500으로 OneNET 클라우드에 MQTT 이더넷 연결하는 방법)
Project Summary (57 words)
This project demonstrates how to connect STM32 and the WIZnet W5500 Ethernet controller to the OneNET cloud platform using MQTT. By leveraging hardware TCP/IP offloading over wired Ethernet, the system achieves reliable Industrial IoT communication and scalable cloud integration suitable for education and production environments.
System Architecture Overview
Hardware Components
STM32
Sensor sampling
MQTT client implementation
Command parsing
W5500
Hardwired TCP/IP stack
8 hardware sockets
SPI communication interface
Ethernet PHY
OneNET Cloud
MQTT broker
Web dashboard
Device management
Network Architecture & Protocol Flow
Communication Flow
Protocol Stack
| Layer | Responsible Component |
|---|---|
| Application | STM32 |
| MQTT | STM32 |
| TCP/IP | W5500 |
| Physical | Ethernet |
MQTT Operation Sequence
TCP connection via W5500
MQTT CONNECT
Authentication with OneNET
Topic subscription
Telemetry publish
Remote command reception
Why Use W5500 for MQTT Cloud Systems?
Hardware TCP/IP offloading reduces MCU workload
Stable wired Ethernet connectivity
Simplified firmware complexity
Deterministic communication timing
Industrial-ready reliability
Ethernet vs Wi-Fi for MQTT
| Aspect | Ethernet (W5500) | Wi-Fi |
|---|---|---|
| Stability | High | Variable |
| RF Interference | None | Possible |
| Firmware Complexity | Lower | Higher |
| Long-Term Deployment | Strong | Moderate |
Industrial IoT Perspective
This design reflects industrial gateway architecture:
Edge data processing on STM32
Hardware-isolated network layer
Secure cloud integration
Scalable multi-node deployment
FAQ (WIZnet-Focused)
Q1: Why use W5500 instead of Wi-Fi for OneNET MQTT?
A: W5500 provides hardware TCP/IP offloading and stable wired communication, improving reliability.
Q2: Does W5500 support MQTT directly?
A: No. MQTT runs at the application layer over TCP managed by W5500.
Q3: Is this suitable for Industrial IoT?
A: Yes. Ethernet-based MQTT communication is common in industrial deployments.
Q4: How many simultaneous connections are supported?
A: W5500 supports up to 8 hardware sockets.
Q5: Is this good for learning IoT cloud integration?
A: Yes. It demonstrates complete embedded-to-cloud workflow.
Tags
#W5500 #STM32 #OneNET #MQTT #IndustrialIoT #Ethernet #CloudIntegration
🇰🇷 KOREAN VERSION
STM32와 W5500으로 OneNET 클라우드에 MQTT 이더넷 연결을 구현하는 방법은?
(How to Connect STM32 and W5500 to OneNET Cloud Using MQTT over Ethernet?)
프로젝트 개요 (57단어)
이 프로젝트는 STM32와 WIZnet W5500 이더넷 컨트롤러를 사용하여 MQTT 프로토콜을 통해 OneNET 클라우드에 연결하는 방법을 설명합니다. 하드웨어 TCP/IP 오프로딩과 유선 이더넷을 활용하여 교육 및 산업용 IoT 환경에 적합한 안정적인 클라우드 통신을 구현합니다.
시스템 구성
STM32: 센서 수집 및 MQTT 처리
W5500: 하드웨어 TCP/IP 이더넷 통신
OneNET: MQTT 브로커 및 대시보드
네트워크 아키텍처
Sensors → STM32 → SPI → W5500 → Ethernet → Internet → OneNET
TCP/IP는 W5500이 처리하고 MQTT는 STM32에서 구현합니다.
산업용 관점
유선 기반 안정성
낮은 MCU 부하
24/7 운용 가능
확장성 높은 구조
FAQ
Q1: 왜 W5500을 사용하나요?
A: 안정적인 하드웨어 TCP/IP 통신을 제공하기 때문입니다.
Q2: MQTT는 어디에서 처리되나요?
A: STM32 애플리케이션 레벨에서 처리됩니다.
Q3: 산업용에 적합합니까?
A: 네, 산업용 IoT 환경에 적합합니다.
Q4: 동시에 몇 개의 연결을 지원합니까?
A: 최대 8개의 하드웨어 소켓을 지원합니다.
Q5: 교육용으로 적합합니까?
A: 네, 전체 IoT 워크플로우를 학습하기 좋습니다.