UM1670 Rev 4 15/32
UM1670 Hardware layout
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6.3.1 Drivers
The ST-LINK/V2-B requires a dedicated USB driver, which, for Windows
®
7, 8, and 10 can
be found at the www.st.com website. In case the STM32 Discovery is connected to 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 (see
Figure 6:
Updating the list of drivers in Device Manager) and update the driver of the connected
device from the device manager.
Note: Prefer using the “USB Composite Device” handle for a full recovery.
Figure 6. Updating the list of drivers in Device Manager
6.3.2 ST-LINK/V2-B firmware upgrade
The ST-LINK/V2-B 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-B 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 Discovery board
and periodically, to stay up-to-date with the latest firmware version.
6.3.3 VCP configuration
The ST-LINK/V2-B on STM32F429I-DISC1 supports Virtual COM port (VCP) on U2 pin 12
(ST-LINK_TX) and U2 pin 13 (ST-LINK_RX), which are connected to the STM32F429 target
STM32 USART1 (PA9, PA10) for Mbed support, thanks to the SB11 and SB15 solder
bridges.
The SB11 (PA9) and SB15 (PA10) default configurations for 32F429IDISCOVERY and
STM32F429I-DISC1 are given in
Table 6: Solder bridges.
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