Drivers; Table 10. Stlink Usb Μb Connector Pinout Mb1263/Cn4; Figure 8. Stlink Usb Μb Connector Pinout Mb1263/Cn4 - ST STM32MP157 Series User Manual

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.
Table 10 describes STLINK USB µB connector pinout MB1263/CN4.
Pin
1
2
3
4
5
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. To 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
UM2535 - Rev 1
Figure 8. STLINK USB µB connector pinout MB1263/CN4
Table 10. STLINK USB µB connector pinout MB1263/CN4
Board function
VBUS Power
DM
DP
ID
GND
Embedded ST-LINK/V2-1
STLINK STM32 pin
-
PA11
PA12
GND
GND
UM2535
MSv46073V1
page 16/55