Product Card

For information about debugging and programming features refer to STLINK-V2.1 in-circuit debugger/

programmer

, User manual (UM1075) available on www.st.com, which describes in details all the STLINK-V2.1

features.

Figure 8 shows the STLINK USB µB connector pinout MB1263/CN4.

Figure 8. STLINK USB µB connector pinout MB1263/CN4

MSv46073V1

Table 10 describes STLINK USB µB connector pinout MB1263/CN4.

able 10. STLINK USB µB connector pinout MB1263/CN4

Pin Board function STLINK STM32 pin

1 VBUS Power -

2 DM PA11

3 DP PA12

4 ID GND

5 GND GND

As current consumption of the EVAL exceeds permissible current on USB, it is not possible to power the boards

through the STLINK-V2.1 USB. T

o use the STLINK-V2.1 for programming and debugging, it is mandatory to

power the board first using the 5V power supply, then connect the STLINK-V2.1 USB cable to the PC. Proceeding

this way the USB enumeration succeed thanks to the external power source.

The user must respect the following power sequence procedure:

1. Check that MB1263/JP1 is OFF, MB1263/JP4 [2-3] and JP5 [2-3] are ON to connect UART4 as STLINK

VCP.

2. Connect the 5 V power source, MB1263/LD1 LED turns green, MB1263/LD6 flashes red.

3. Connect the PC to USB connector MB1263/CN4, MB1263/LD6 is red and becomes green once the

connection with the STLINK is established.

6.7.1 Drivers

Before connecting STM32MP157x-EV1 to a Windows (XP, 7, 8 10) PC via USB, a driver for ST-LINK/V2-1 must

be installed. It may be downloaded from www

.st.com.

In case the STM32MP157x-EV1 Evaluation board is connected to the PC before installing the driver, the Windows

device manager may report some USB devices found on STM32MP157x-EV1as “Unknown”. To recover from this

situation, after installing the dedicated driver downloaded from www.st.com, the association of “Unknown” USB

devices found on STM32MP157x-EV1 to this dedicated driver must be updated in the device manager manually.

It is recommended to proceed using USB Composite Device line, as shown in Figure 9.

UM2535

Embedded ST-LINK/V2-1

UM2535 - Rev 2

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