---
title: "STM32+W5500+AIR202/302 & SSL mode"
url: "https://maker.wiznet.io/louis_m/projects/stm32-w5500-air202-302-ssl-mode/"
markdown_url: "https://maker.wiznet.io/louis_m/projects/stm32-w5500-air202-302-ssl-mode/md"
type: "UCC: User Created Content"
author: "Yang Fengwu Corporation"
author_url: "https://cloud.tencent.com/developer/article/1730848?from=article.detail.1635894"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Yang Fengwu Corporation"
original_url: "https://cloud.tencent.com/developer/article/1730848?from=article.detail.1635894"
published: "2022-08-30"
language: "en"
hardware: ["WIZnet WIZ850io"]
likes: 4
views: 1036
comments: 1
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# STM32+W5500+AIR202/302 & SSL mode

> Port the mbedtls library so that the W5500 can connect to the MQTT server in SSL mode

Original author: Yang Fengwu Corporation (source: https://cloud.tencent.com/developer/article/1730848?from=article.detail.1635894)

## Components

- **WIZnet WIZ850io** x 1 ([docs](https://docs.wiznet.io/Product/ioModule/WIZ850io))

## Article

Connect to My Server Test by default (server port 8883)

![](https://maker.wiznet.io/upload/ckeditor5/744587216%5F1661868087%2Epng)

Download to Microcontroller (Internet cable connection)

![](https://maker.wiznet.io/upload/ckeditor5/744587216%5F1661868117%2Epng)

Observe the log print port to verify that the server is connected.

![](https://maker.wiznet.io/upload/ckeditor5/744587216%5F1661868165%2Epng)

Open MQTT Debugging Helper and Development Board Communication (see topic correction)

![](https://maker.wiznet.io/upload/ckeditor5/744587216%5F1661868199%2Epng)

---

Source: https://maker.wiznet.io/louis_m/projects/stm32-w5500-air202-302-ssl-mode/