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tacchi
tacchi
Associate
August 3, 2022
Question

I am using a STM407VET6 development board, and when I connect it via USB, it is recognized as "STM32 ST-Link" as a USB device, but not as a VCP. How can I solve this problem?

  • August 3, 2022
  • 7 replies
  • 3004 views

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7 replies

Tesla DeLorean
Tesla DeLorean
Guru
August 3, 2022

Perhaps connect to the other USB port?

If this is the STM32F407-DISCO board, the TOP/NORTH connector goes to an STM32F1

The BOTTOM/SOUTH Micro-AB connects to the STM32F4, and whatever software you have running on that.

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tacchi
tacchiAuthor
Associate
August 3, 2022

I connect TOP/NORTH connector to a desktop PC.

also did other connector.

The driver has already been reinstalled.

When other boards (F407G-DISC, NUCLEO-F446RE) are connected, they are recognized as VCP.

KnarfB
KnarfB
Super User
August 3, 2022

Try re-installing all drivers.

hth

KnarfB

tacchi
tacchiAuthor
Associate
August 3, 2022

The driver has already been reinstalled.

When other boards (F407G-DISC, NUCLEO-F446RE) are connected, they are recognized as VCP.

tacchi
tacchiAuthor
Associate
August 3, 2022

TOP/NORTH connector to a desktop PC.

The driver has already been reinstalled.

When other boards (F407G-DISC, NUCLEO-F446RE) are connected, they are recognized as VCP.

waclawek.jan
waclawek.jan
Super User
August 3, 2022

> I am using a STM407VET6 development board

What board? Post photo.

​

JW​

​

​

tacchi
tacchiAuthor
Associate
August 3, 2022

0693W00000QMp2GQAT.jpgI'm using​ this board.

KnarfB
KnarfB
Super User
August 3, 2022

This board has a ST-LINK/V2-A which does not include VCP. See

STM32F4DISCOVERY Data brief and

TN1235 Overview of the ST-LINK versions.

hth

KnarfB

KnarfB
KnarfB
Super User
August 3, 2022

Can add VCP by soldering 2 wires, see UM1472 Discovery kit with STM32F407VG MCU

hth

KnarfB

tacchi
tacchiAuthor
Associate
August 3, 2022

Already made wire connections but It was not recognized as a Virtual COM Port in Device Manager.

Could it be that this device does not allow serial communication using TeraTerm or similar?

KnarfB
KnarfB
Super User
August 3, 2022

Have you upgrade the ST-LINK firmware uisng STM32CubeProgrammer or such? The tool should state the link type: Debug+MSC+VCP

hth

KnarfB

waclawek.jan
waclawek.jan
Super User
August 3, 2022

This

  • is not a genuine ST board, it's a clone
  • as the STLink is STM32F103C8T6, it cannot support the STLinkV2-A firmware which has the VCP (that would require STM32F103CBT6), only the older STLinkV2 firmware without VCP

JW

tacchi
tacchiAuthor
Associate
August 3, 2022

Understood.

Thank you very much.

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