How to Build Commercial Alibaba Cloud MQTT Connectivity with WIZnet W5500 on STM32F103?

This project combines an STM32F103C8T6, WIZnet W5500, and an MQTT client to publish and subscribe to messages through Alibaba Cloud IoT.

gavinchang

Published July 18, 2026

109 UCC

25 WCC

55 VAR

4 Followers

Original author: bond007Original source (new tab)

Project description

How to Build Commercial Alibaba Cloud MQTT Connectivity with WIZnet W5500 on STM32F103? Summary This project combines an STM32F103C8T6, WIZnet W5500, and an MQTT client to publish and subscribe to messages through Alibaba Cloud IoT. STM32 runs the application, MQTT packet handling, cloud authentication, telemetry formatting, command validation, and recovery logic. W5500 provides the 10/100 Ethernet MAC/PHY, hardwired TCP/IP processing, eight hardware sockets, and 32 KB of network buffer memory. The GitCode repository identifies an MQTT client, W5500 driver integration, Alibaba Cloud…

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