Drivers; Stlink-V3E Firmware Upgrade; Using An External Debug Tool To Program And Debug The On-Board Stm32; Figure 8. Usb Composite Device - ST NUCLEO-WL55JC STM32WL User Manual

• CN16 MIPI10 connector
• LED6 COM status LED blinking during communication with the PC
• LED4 OC fault red LED alerting on USB overcurrent request
• U4 5 V / 300 mA output power supply capability with current limitation and LED
• LD4 5V_PWR 5 V power green LED
6.3.1

Drivers

Before connecting the STM32WL Nucleo-64 board to a Windows 7
a driver for the STLINK-V3E (stsw-link009) must be installed (not required for Windows 10
www.st.com website.
In case the STM32WL Nucleo-64 board is connected to the PC before the driver is installed, some STM32WL
Nucleo-64 interfaces may be declared as "Unknown" in the PC device manager. In this case, the user must install
the dedicated driver files, and update the driver of the connected device from the device manager as shown in
Figure 8.
Note: Prefer using the USB Composite Device handle for a full recovery.
Note: 37xx:
• 374E for STLINK-V3E without bridge functions
• 374F for STLINK-V3E with bridge functions
6.3.2

STLINK-V3E firmware upgrade

The STLINK-V3E embeds a firmware upgrade mechanism for the in-situ upgrade through the USB port. As the
firmware may evolve during the lifetime of the STLINK-V3E 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 STM32WL Nucleo-64 board and periodically, to stay up-to-date with the latest firmware version.
6.3.3

Using an external debug tool to program and debug the on-board STM32

There are two basic ways to support an external debug tool:
1. Keep the embedded STLINK-V3E running. Power on the STLINK-V3E at first until the COM LED turns red.
Then connect the external debug tool through the CN16 STDC14/MIPI-10 debug connector
2. Set the embedded STLINK-V3E in a high-impedance state. When the STLK_RST JP6 jumper is ON, the
embedded STLINK-V3E is in RESET state and all GPIOs are in high-impedance. Then, connect the external
debug tool to debug connector CN16.
UM2592 - Rev 1
®
Figure 8. USB composite device
Embedded STLINK-V3E
®
, Windows 8 , or Windows 10
®
). It is available on the
UM2592
®
PC via USB,
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