STM32F4 USB composite device driver MISSING!

[bmak]

Hi!

I currently work on USB composite device (CDC + MSC). I putted together a program with help from:

• https://sudonull.com/post/68144-CDC-MSC-USB-Composite-Device-on-STM32-HAL
• https://www.programmersought.com/article/18127793400/

The thing is, i don't know if my program works, because THE DRIVER IS MISSING.

I can't find the driver that win 10 would accept.

When I use only CDC or MSC it works fine, but together not.

I'm using STM32F407VG (custom board and discovery board).

I tried these drivers:

• https://github.com/rogerclarkmelbourne/Arduino_STM32/issues/697
• https://www.st.com/en/development-tools/stsw-stm32102.html

The device shows up as "Maple".

Anyone had this problem? Is it the fault of the drivers or my program?

Thanks and have a nice day :)

UPDATE:

It wasn't windows problem, it was the problem with my code. If you dont know how to do composite device i recommend to you this link:

 HAL_PCDEx_SetRxFiFo(&hpcd_USB_OTG_FS, 0x80);
 HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 0, 0x40);
 HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 1, 0x40);
 HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 2, 0x20);
 HAL_PCDEx_SetTxFiFo(&hpcd_USB_OTG_FS, 3, 0x20);

• https://shequ.stmicroelectronics.cn/forum.php?mod=viewthread&tid=620990

Only changes I did to match my STM32F407 was this in USBD_LL_Unit():

After that everything worked :)

Also, if you are using custom board with STM32 and external STLink connected, ALWAYS remember to disconnect it when testing your code! I'm sure it will save you a lot of issues :)

[bmak]

Also, i tried changing stmcdc.inf file (like it is written at the end of this post https://sudonull.com/post/68144-CDC-MSC-USB-Composite-Device-on-STM32-HAL

) but it didn't help. The driver didn't want to be installed.

[Pavel A.]

What exactly Win10 shows in device manager?

[bmak]

Unknown device, name "Maple". I don't have screenshot.

[Pavel A.]

Does it show some problem such as "error reading descriptor"?

If it is composite, try "View devices by container" to see all sub-functions.

[bmak]

Solution in update :)