STM32H7A3 USB_OTG_FS

[comer]

Hi,

    I am using the STM32H7A3 board to implement the virtual serial port function for USB, and I want to use FS mode. However, there is no macro definition related to FS mode in STM32H7a3xx. h. Do I need to manually add it? And I checked the demo in the development package, but there is no demo of H7A3 regarding the virtual serial port. Can you provide it? Currently, I am referring to the USB virtual serial port demo of stm32H743l for porting, following the HS mode, but the computer does not recognize the USB interface.

[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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@comer wrote:

I am using the STM32H7A3 board 

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Which STM32H7A3 board ?

[comer]

It's not an official development board, it's the smallest system board I bought online

[Andrew Neil]

That doesn't tell us much - Please give a link.

[comer]

hi ,andrew neil

        The important thing is not this development board, but the USB code generated by CubeIDE when I use the STM32H7A3 chip for development the configuration related to FS, whether this chip can be configured into FS mode?

[Pavel A.]

STM32H7A/B have only one USB controller (per the documentation, I don't have these boards) and it is named "HS".

For example see here. This is why _FS macros are not defined for this product - just by arbitrary convention.