STM32U575CIU6 USB CDC not working

[ramamurth]

Hi,

I'm working on custom board where i have to use the USB CDC class to demonstrate the USB virtual com port feature along with data transfer and receive.

We have generated the project using CubeMX 6.15 and STM32Cube IDE 2.0 but not able to detect the com port.

We are using PA11, PA12, PA9 pins for USB.

Kindly provide a step-by-step guide.

Thank you.

Ram

[Andrew Neil]

Welcome to the forum.

Please see How to write your question to maximize your chances to find a solution for best results.

 

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@ramamurth wrote:

on custom board

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You'll need to give details of that board - schematics, layout, etc.

Some good, clear photos may also help.

Do other things on the board work OK?

 

Before moving to a custom board, did you prove your code on a known-good board; eg, ST board?

[Gyessine]

Hello @ramamurth 
First and to eliminate all software related issues
Can you try and run this firmware example and see if it works?
Keep in my mind that you will need 2 "DATA" USB cables.
BR
Gyessine

[FBL]

Hi @ramamurth 

Based on the project attached, you are not configuring your project in standalone (without ThreadX) properly: missing

ux_device_stack_tasks_run()

Here is a step by step KB article to implement standalone USBX.