ST STM32U083C-DK - Embedded STLINK-V2 EC; Drivers; STLINK-V2 EC Firmware Upgrade; Figure 6. USB Composite Device

6.3 Embedded STLINK-V2EC
The STLINK-V2EC programming and debugging tool is integrated with the STM32U083C-DK Discovery kit.
The embedded STLINK-V2EC supports only the SWD for STM32 devices.
For all general information concerning the debugging and programming features of STLINK-V2EC, refer to the
user manual ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 (UM1075) and the technical note
Overview of ST-LINK derivatives (TN1235).
There are two different ways to program and debug the onboard STM32 MCU:
• Using the embedded STLINK-V2EC
• Using an external debug tool connected to the STDC14/MIPI10 connector (CN4)
Refer to Table 10. Jumper configuration to switch between STLINK-V2EC and STDC14 configurations.
The STLINK-V2EC facility for debugging and flashing is integrated into the STM32 Discovery kit.
Features supported in STLINK-V2EC:
• USB software re-enumeration
• Mass storage interface on USB
• USB power management request for more than 100 mA power on the USB connector
Known limitations:
• Activating the readout protection on the STM32 target prevents the target application from running
afterward. The target readout protection must be kept disabled on STLINK-V2EC boards.
6.3.1 Drivers
Until Windows
®
10, STLINK-V2EC requires a dedicated USB driver, which is available from www.st.com.
In case the STM32U083C-DK Discovery kit is connected to the PC before the driver is installed, some STM32
Discovery kit interfaces might 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 6.
Note: It is preferable to use the USB Composite Device to handle a full recovery.
Figure 6. USB composite device
6.3.2 STLINK-V2EC firmware upgrade
STLINK-V2EC embeds a firmware mechanism for the in‑place upgrade through the USB port. As the firmware
might evolve during the lifetime of the STLINK-V2EC product (for example new functionalities, bug fixes, support
for new microcontroller families), visiting the
www.st.com website is recommended before starting to use the
STM32U083C-DK Discovery kit, then periodically to stay up-to-date with the latest firmware version.
UM3292
Hardware layout and configuration
UM3292 - Rev 1
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