Embedded St-Link/V2 (Or V2-B); Drivers; Table 4. Jumper States - ST STM32F3DISCOVERY User Manual

Hardware layout and configuration
6.2

Embedded ST-LINK/V2 (or V2-B)

The ST-LINK/V2 on PCB version A or B or the ST-LINK/V2-B on PCB version C is
embedded as a programming and debugging tool. Virtual COM port and USB mass storage
features are supported by the ST-LINK/V2-B only.
The embedded ST-LINK/V2 (or V2-B) supports only SWD for STM32 devices. 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 changes in ST-LINK/V2-B versus ST-LINK/V2 version are listed below. New features
supported on ST-LINK/V2-B are:
•
Virtual Com port interface on USB
•
Mass storage interface on USB
The embedded-on-board features not supported either on ST-LINK/V2 or on
ST-STLINK/V2-B are:
•
SWIM interface
•
Minimum supported application voltage limited to 3 V
•
USB power management request for more than 100 mA power on USB
Known limitation:
Activating the readout protection on the STM32 target prevents the target application from
running afterward. The readout protection must be kept disabled on the STM32 target.
There are two different ways to use the embedded ST-LINK/V2 (or V2-B), depending on the
jumper states (see
•
Programming/debugging the STM32 on board (refer to
LINK/V2 (or V2-B) to program/debug the on-board
• Programming/debugging the STM32 in an external application board, using a cable
connected to SWD connector CN2 (refer to
to program/debug an external STM32
Jumper state
Both CN4 jumpers ON
Both CN4 jumpers OFF
6.2.1

Drivers

The ST-LINK/V2 (or V2-B) requires a dedicated USB driver, which, for Windows
can be found at the
PC before the driver is installed, some Discovery interfaces may be declared as 'Unknown'
in the PC device manager. In this case, the user must install the driver files, and from the
device manager, he must update the driver of the connected device (see
Note: Prefer using the 'USB Composite Device' handle for a full recovery.
14/36
Table 4):

Table 4. Jumper states

ST-LINK/V2 (or V2-B) functions enabled for on-board programming
(default)
ST-LINK/V2 (or V2-B) functions enabled for application through external
CN3 connector (SWD supported)
www.st.com website. In case the STM32 Discovery is connected to the
UM1570 Rev 6
Section 6.2.4: Using ST-
STM32F303VCT6)
Section 6.2.5: Using ST-LINK/V2 (or V2-B)
application)
Description
UM1570
®
XP, 7, 8,
Figure 6).