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USB enumeration issue with Nucleo board acting as USB Host CDC

NS.8
Associate II

I am working on STM32H7532ZIT6 – NUCLEO H753ZI. Trying to connect LTE modem (Quectel EVal board ) via USB I/f using a female connector in between. Programmed STM as USB host at 48MHZ and disabled VBUS. I see that the Enumeration fails as the API USBH_Get_DevDesc. Tried sample code online from several sites and none works

7 REPLIES 7

Hello @NS.8​,

Welcome to ST Community :smiling_face_with_smiling_eyes:

You can refer to the following example provided under the H7 Firmware Package:

  • Projects\STM32H743I-EVAL\Applications\USB_Host\CDC_Standalone

As well, take a look at this video, it may help you.

BeST Regards,

Walid

NS.8
Associate II

Hi Walid,

Thanks for the answer. I am trying to bring the nucleo board STM32H7532ZIT6 – NUCLEO H753ZI as USB host in CDC mode. Can you please let me know whether this board supports CDC mode in USB host?

NS.8
Associate II

Hi Walid,

It will be useful if you can provide USB host examples of STM32H7532ZIT6 – NUCLEO H753ZI so that I can verify the IOC/Configuration file?

Thanks in advance

Hello @NS.8​ ,

The examples provided under the STM32H7Cube firmware do not have the ioc file.

You can try to customize this example to your needs. This might help you.

BeST Regards,

Walid

NS.8
Associate II

Hi Walid,

I suspect the configuration to be the main culprit in our setup. Is it possible to provide instructions for configuration so that we can verify the same ? WE disabled the VBUS as the module we connect to STM has a separate power

Hi Walid,

What is the IDE used in this example project?

Hello @NS.8​ ,

All H7 examples are provided with the following IDEs:

  • IAR (EWARM)
  • Keil (MDK-ARM)
  • System workbench (SW4STM32)

BeST Regards,

Walid