7.1 Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated into the STM32WB5MM-DK Discovery kit. For
information about debugging and programming features refer to ST-LINK/V2 in-circuit debugger/programmer for
STM8 and STM32 user manual (UM1075), which describes in detail all the ST-LINK/V2 features.
The additional features supported on the ST-LINK/V2-1 are:
• USB software re-enumeration
• Virtual COM port interface on USB
• Mass storage interface on USB
• USB power management request for more than 100 mA power on USB (limited to 300 mA for this board)
The following features are no more supported on the ST-LINK/V2-1:
• Application voltage lower than 3 V
7.1.1 Drivers
The ST-LINK/V2-1 requires a dedicated USB driver, which, for Windows 7
®
and Windows 8
®
, is found at
www.st.com. For Windows 10
®
, it is not necessary to install the driver, as the ST-LINK is automatically identified.
In case the STM32WB5MM-DK Discovery kit is connected to the PC before the driver is installed, some
Discovery board interfaces may be declared as “Unknown” in the PC device manager. In this case, the user
must install the dedicated driver files, and update the driver of the connected device from the device manager as
shown in Figure 6.
Note: Prefer using the “USB Composite Device” handle for a full recovery.
Figure 6. USB composite device
7.1.2 ST-LINK/V2-1 firmware upgrade
The ST-LINK/V2-1 embeds a firmware upgrade mechanism for the 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 functionalities, bug fixes,
support for new microcontroller families), it is recommended to visit the www.st.com website before starting to use
the STM32WB5MM-DK Discovery kit and periodically, to stay up-to-date with the latest firmware version.
UM2825
Embedded ST-LINK/V2-1
UM2825 - Rev 1
page 11/42
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