UM1817 datasheet(11/58 Pages) STMICROELECTRONICS

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UM1817

Hardware layout and configuration

2.1

Embedded ST-LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32091C-EVAL

evaluation board. Compared to ST-LINK/V2 the changes are listed below.

The new features supported on 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

This feature is no more supported on ST-LINK/V2-1:

•

SWIM interface

For all general information concerning debugging and programming features common

between V2 and V2-1 refer to the ST-LINK/V2 in-circuit debugger/programmer for STM8

and STM32ST-LINK/V2 User manual (UM1075).

Note:

It is possible to power the board via CN12 (Embedded ST-LINK/V2-1 USB connector) even

if an external tools is connected to CN10 (High density SWD connector) or CN11 (SWD

connector).

2.1.1

Drivers

The ST-LINK/V2-1 requires a dedicated USB driver, which can be found at the www.st.com

website for Windows® 7 and 8. On Windows® XP the ST-LINK/V2-1 driver requires WinUsb

to be installed before using the ST-LINK/V2-1 (either available from Microsoft website or

included in the USB driver for ST-LINK/V2 for XP).

In case the STM32091C-EVAL evaluation board is connected to the PC before the driver is

installed, some STM32091C-EVAL 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.

Note:

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

Figure 5. USB Composite Device

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