Composite Device problem.

lubo · ‎2024-04-02

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

FBL · ‎2024-04-09

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?

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lubo · ‎2024-04-09

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