Embedded Stlink/V2-1; Drivers; St-Link/V2-1 Firmware Upgrade; Figure 7. Usb Composite Device - STMicroelectronics B-L462E-CELL1 User Manual

7.1

Embedded STLINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the B-L462E-CELL1 Discovery kit for IoT
nodes. Compared to the ST-LINK/V2 the changes are listed below.
The new 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
The following features are no more supported on the ST-LINK/V2-1:
• SWIM interface
• Application voltage lower than 3 V
For all general information concerning debugging and programming features common between V2 and V2-1
versions, refer to user manual ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 (UM1075) at the
www.st.com website.
7.1.1

Drivers

The ST-LINK/V2-1 requires a dedicated USB driver, which, for Windows 7
found at www.st.com.
In case the B-L462E-CELL1 Discovery kit for IoT nodes 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
Note: Prefer using the "USB Composite Device" handle for a full recovery.
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
use the B-L462E-CELL1 Discovery kit for IoT nodes and periodically, to stay up-to-date with the latest firmware
version.
UM2743 - Rev 1
7.
Figure 7.
®
, Windows 8
USB composite device
www.st.com
UM2743
Embedded STLINK/V2-1
® ®
and Windows 10 , is
website before starting to
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