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6.3
Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated into the STM32L5 Nucleo-144 board.
For detailed information about the debugging and programming features of ST-LINK/V2-1, refer to the ST-LINK/V2
in-circuit debugger/programmer for STM8 and STM32 user manual (UM1075) and Overview of ST-LINK
derivatives technical note (TN1235).
Features supported by the ST-LINK/V2-1:
•
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
Features not supported on ST-LINK/V2-1:
•
SWIM interface
•
Minimum supported application voltage limited to 3.0 V
Known limitation:
•
Activating the readout protection on the STM32 target prevents the target application from running afterward.
The target readout protection must be kept disabled on ST-LINK/V2-1 boards.
The embedded ST-LINK/V2-1 is directly connected to the SWD port of the target STM32.
6.3.1
Drivers
The ST-LINK/V2-1 requires a dedicated USB driver, which, for Windows 7
found at www.st.com.
In case the STM32L5 Nucleo-144 board is connected to the PC before the driver is installed, some STM32L5
Nucleo-144 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
7.
Note:
Prefer using the USB Composite Device handle for a full recovery.
6.3.2
ST-LINK/V2-1 firmware upgrade
The ST-LINK/V2-1 embeds a firmware 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
STM32L5 Nucleo-144 board and periodically, to stay up-to-date with the latest firmware version.
UM2581 - Rev 2
Figure 7.
USB composite device
www.st.com
Embedded ST-LINK/V2-1
®
®
, Windows 8
and Windows 10
website before starting to use the
UM2581
®
, is
page 12/48
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