User's Manual

UM2819
Embedded ST-LINK/V2-1
UM2819 - Rev 1
page 16/37
7.4 Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated into the NUCLEO-WB55RG Nucleo-64 board.
For information about debugging and programming features, refer to the user manual ST-LINK/V2 in-circuit
debugger/programmer for STM8 and STM32 (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
7.4.1 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 NUCLEO-WB55RG Nucleo-64 board is connected to the PC before the driver is installed, some
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 10.
Note: Prefer using the “USB Composite Device” handle for a full recovery.
Figure 10. USB composite device
7.4.2 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 NUCLEO-WB55RG Nucleo-64 board and periodically, to stay up-to-date with the latest firmware version.
7.4.3 CN15 ST-LINK/V2-1 USB connector
The main function of this connector is the access to ST-LINK/V2-1 embedded on NUCLEO-WB55RG for
programming and debugging purposes as explained above. It can supply the board (Refer to Section 7.1 Power
supply).