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pkulk.1
pkulk.1
Associate II
Mar 9, 2022 9:35 PM UTC
Question

[STM32U575ZI-Q] Not able to set the USB OTG FS. The option(USBX) is disabled in the middleware section of CubeMx for USB OTG FS.

I am trying to set up USB OTG FS as CDC(virtual com port). For the other Nucleo board (Nucleo F746ZG) I was able to set it up in middleware section of CubeMx GUI.

With the STM32U575ZI-Q board, the option(USBX) is disabled. Also, in the device manager or computer, the port is not recognized. I am using C-type USB to USB-A also tried with C-type to C-type.

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7 replies

Peter BENSCH
Peter BENSCH
ST Technical Moderator
Mar 10, 2022 8:16 AM UTC

You've probably set USB_OTG_FS > OTG/Dual_Role_Device, correct?

Have you also activated ThreadX > Core, because this is required for USBX (also shown in the pop-up)?

Regards

/Peter

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pkulk.1
pkulk.1Author
Associate II
Mar 10, 2022 8:31 AM UTC

@Peter BENSCH​ I am setting it to Device only mode. I have not activated ThreadX>Core.

Peter BENSCH
Peter BENSCH
ST Technical Moderator
Mar 10, 2022 11:42 AM UTC

The middleware USBX, like ThreadX, is part of Azure and includes both host and device, which is why ThreadX > Core is required.

Regards

/Peter

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pkulk.1
pkulk.1Author
Associate II
Mar 11, 2022 2:11 AM UTC

@Peter BENSCH​ What could be the reason for the port is not being detected and not shown in Device MAnager? I tried C-type to USB-A and Ctype to C-type.

Peter BENSCH
Peter BENSCH
ST Technical Moderator
Mar 11, 2022 11:13 AM UTC

Of course, the USB device can only be recognised if the USB port is active and supported by software.

Regards

/Peter

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pkulk.1
pkulk.1Author
Associate II
Mar 11, 2022 10:01 PM UTC

@Peter BENSCH​ Okay, I have activated the ThreadX and set the USBX. and I can see the board as a device, not as a com port(in Device Manager)(image attached).

Could you please show me how to do a simple TX and RX using USBX?

Prakash_Raj1994
Associate III
Oct 16, 2023 9:38 AM UTC

Hi pkulk,

did you get solution for USB CDC transmit and receive ?

regards,

prakash

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