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Composite Device problem.

lubo
Associate

‎2024-04-02 03:09 AM

Hello

I am working a project that implements CDC_ACM and MSC devices in a composite device.Device Manager displays these as USB Serial Device (Com35 , works) and STM Product USB Device (Mass Storage Device). But Disk Drive does not appear in Explorer of  PC (BTW it appears in Explorer after too long time ... 10 min or so as Disk Drive , without size and Windows does not ask to format at all)? What i am missing or what i do wrong , please help?

Regards

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2 REPLIES 2
FBL
ST Employee

‎2024-04-09 05:01 AM

Hi @lubo 

Would you share a minimum of code to reproduce? Which STM32 product, board you are using? Could you test MSC standalone and see if the issue persists?

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

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lubo
Associate
In response to FBL

‎2024-04-09 10:26 PM

Hi FBL

Thanks for your attention.
Meanwhile i managed to solve the problem.It works fine now.
There was a wrong value I wrote for TxFifo in conf. file.
My project include a Composite Device (4 Virtual Com Ports and 2 LUN Mass Storage device).
The processor is STM32U5A5 serie.

Best Regards

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