Embedded St-Link/V2-1; Drivers; St-Link/V2-1 Firmware Upgrade; Figure 7. Usb Composite Device - ST STM32G081B-EVAL User Manual

UM2403
8.1
Note:
8.1.1
Note:
8.1.2
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Embedded ST-LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32G081B-
EVAL Evaluation board. Compared to ST-LINK/V2 the changes are listed below.
The new features supported on ST-LINK/V2-1 are:
•
USB software enumeration
•
Virtual COM port interface on USB
•
Mass storage interface on USB
•
USB power management request for more than 100 mA power on USB
This feature is no longer supported on ST-LINK/V2-1:
• SWIM interface
For all general information concerning debugging and programming features common
between V2 and V2-1 refer to ST-LINK/V2 in-circuit debugger/programmer for STM8 and
STM32 User manual (UM1075) in the
It is possible to power the board via CN6 (Embedded ST-LINK/V2-1 USB connector) even if
an external tools is connected to CN12 or CN13 (External SWD connector).

Drivers

The ST-LINK/V2-1 requires a dedicated USB driver, which can be found on
Windows PC (7, 8 or 10).
In case the STM32G081B-EVAL Evaluation board is connected to the PC before the driver
is installed, some STM32G081B-EVAL interfaces may be declared as "Unknown" in the PC
device manager. In this case, the user must install the driver files, and update the driver of
the connected device from the device manager.
Prefer using the "USB Composite Device" handle for a full recovery.

ST-LINK/V2-1 firmware upgrade

The ST-LINK/V2-1 embeds a firmware upgrade mechanism for in-situ upgrade through the
USB port. As the firmware may evolve during the lifetime of the ST-LINK/V2-1 product (for
example new functionality, bug fixes, support for new microcontroller families), it is
recommended to visit the
EVAL board and periodically, to stay up-to-date with the latest firmware version.
www.st.com website.

Figure 7. USB Composite Device

www.st.com website before starting to use the STM32G081B-
UM2403 Rev 1
Hardware layout and configuration
www.st.com for
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