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UM2153

Hardware layout and configuration

7.3

Embedded ST-LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32L4 Discovery

kit for IoT node. 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 ST-LINK/V2 in-circuit debugger/programmer for

STM8 and STM32 User manual (UM1075) at the www.st.com website.

7.3.1

Drivers

Before connecting STM32L475VG to a Windows® PC (XP, 7, 8 or 10) via USB, a driver for

the ST-LINK/V2-1 must be installed. It is available at the www.st.com website.

In case the STM32L4 Discovery kit for IoT node is connected to the PC before the driver is

installed, some STM32L4 Discovery kit interfaces may be declared as “unknown” in the PC

device manager. In this case the user must install the driver files, and update the driver of

the connected device from the device manager (see Figure 6).

Note:

Prefer using the “USB Composite Device” handle for a full recovery.

Figure 6. USB composite device

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