USB CDC device not compiling properly

[Cheyne]

Product: STM32F401VET6
Firmware Package: STM32Cube_FW_F4 V1.28.0
Tool: STM32CubeIDE (latest version)

Description:

Hi!

I’m currently working on a USB CDC device project using the STM32F401VET6 microcontroller with the STM32Cube_FW_F4 firmware package (V1.28.0) in STM32CubeIDE.

I have encountered a series of issues when enabling USB_DEVICE with the CDC class. Specifically:

1. The generated project fails to compile due to errors, such as USBD_ClassTypeDef being undefined in some modules (e.g., usbd_ioreq.h), even though usbd_def.h is included and USBD_ClassTypeDef  is defined in usbd_def.h.

2. The structure USBD_HandleTypeDef is not recognized in some compilation units, leading to cascading errors.

3. There seem to be conflicts or inconsistencies when including usbd_def.h, especially between header files like usbd_ctlreq.c, usbd_core.c, and usbd_ioreq.c.

4. Even after ensuring all relevant include paths (e.g., Middlewares/ST/...) are configured correctly in the project, the problem persists.

5. I found there is the issue of circular header dependencies, e.g. usbd_ioreq.h has #include "usbd_core.h". However, usbd_core.h has #include "usbd_ioreq.h".

I suspect that there may be version mismatches, circular header dependencies, or missing default initializations with the USB stack in this firmware version.

Could you kindly:

• Confirm if STM32Cube_FW_F4 V1.28.0 supports USB CDC correctly for STM32F401?

• Provide any known solutions or a verified example for USB CDC on STM32F401 using CubeMX-generated code?

I would be grateful if you could help clarify whether this issue is known and how to resolve it.

Best regards,

[TDK]

Please include the IOC file used to generate this code.

[Cheyne]

This is my .ioc file. Please check!

[FBL]

Hi @Cheyne 

First, I recommend upgrading to latest version of CubeF4 V1.28.2.

Second, I regenerated the code using your IOC file with latest version STM32CubeIDE without compiling issues.

So, check include paths : it seems some MW files are missing in your project : usbd_cdc.h ..

Sometimes the compiler cache may cause stale or incomplete builds. Perform a full clean of the project followed by a rebuild to ensure all files are correctly compiled and linked.

If still having issue, you can share your full project.