---
title: "(Sponsored) STM32 USB Virtual COM Port - Phil's Lab #154"
url: https://daily.dev/posts/sponsored-stm32-usb-virtual-com-port---phil-s-lab-154-cr2vxlnec
source_url: https://www.youtube.com/watch?v=kDaQO_x8auk
type: video:youtube
source: "Phil's Lab"
published: 2026-05-31T07:45:26.124Z
updated: 2026-06-04T02:15:51.637Z
tags: ["embedded", "firmware", "hardware", "stm32"]
reading_time: 25
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# (Sponsored) STM32 USB Virtual COM Port - Phil's Lab #154

**[Phil's Lab](https://daily.dev/sources/phils-lab)** · 25 min read · 0 upvotes · 0 comments

## Summary

A step-by-step walkthrough of setting up a USB Virtual COM Port (CDC class) on an STM32H7 microcontroller using STM32CubeIDE. Covers hardware schematic considerations (USB differential pair, ESD protection, CC pull-down resistors, crystal vs crystal-less USB), CubeIDE peripheral and clock configuration, and firmware implementation for both transmitting and receiving data via the CDC driver. Includes practical code examples using snprintf, CDC_Transmit_HS, and a receive callback pattern, verified with HTerm serial monitor on Windows.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.youtube.com/watch?v=kDaQO_x8auk>

---

Tags: [#embedded](https://daily.dev/tags/embedded), [#firmware](https://daily.dev/tags/firmware), [#hardware](https://daily.dev/tags/hardware), [#stm32](https://daily.dev/tags/stm32)

[View this post on daily.dev](https://daily.dev/posts/sponsored-stm32-usb-virtual-com-port---phil-s-lab-154-cr2vxlnec)