ST STM32MP257F-EV1 User Manual page 11

6.4 Embedded STLINK-V3EC
This section gives some information about the implementation of STLINK-V3EC on this board.
Attention: Before using STLINK-V3EC, ensure that the complete system is well
STLINK-V3EC function. For detailed information about the STLINK-V3EC features such as drivers, firmware
upgrades, USB interface selection, and LED management, refer to the technical note Overview of ST-LINK
derivatives (TN1235).
6.4.1 Description
To debug the onboard STM32MP257 device, the STLINK-V3EC programming and debugging tool is integrated in
STM32MP257F-EV1. The embedded STLINK-V3EC supports only SWD and VCP for STM32 devices. For
information about the debugging and programming features of STLINK-V3EC, refer to the user manual ST-
LINK/V2 in-circuit debugger/programmer for STM8 and STM32 (UM1075) and to the corresponding technical note
Overview of ST-LINK derivatives (TN1235).
6.4.2 STLINK-V3EC deactivation (Reset mode)
It is simple to deactivate the STLINK-V3EC function by putting a jumper on the JP3 header, to connect
STLK_NRST to GND. Programming, debugging, and monitoring through ST-LINK are impossible in this Reset
state, where all STLINK-V3EC PIOs are in high impedance.
Attention: The Reset mode is useful for connecting an external probe to the MIPI10 debug (CN22) connector for the
embedded STM32MP2 debug.
6.4.3 Drivers
Before connecting STM32MP257F-EV1 to a Windows
installed (it is not required for Windows 10
If STM32MP257F-EV1 is connected to the PC before the driver is installed, some STM32MP257F-EV1 interfaces
might be declared 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.
6.4.4 STLINK-V3EC firmware upgrade
STLINK-V3EC embeds a firmware upgrade mechanism for in-place upgrades through the USB port. Firmware
might evolve during the lifetime of the STLINK-V3EC product (addition of new functionalities, bug fixes, or support
of new microprocessor families). Therefore, it is recommended to visit the
starting to use STM32MP257F-EV1 to stay up‑to‑date with the latest firmware version.
6.4.5 Use of STLINK-V3EC to program and debug the on‑board STM32
To debug the on‑board STM32, no specific hardware configuration is required. Programming through STLINK-
V3EC is not supported with microprocessor products.
6.4.6 LED signification
Refer to the technical note Overview of ST-LINK derivatives (TN1235).
UM3359 - Rev 2
‑ configured and up-to-date with the
®
PC via the USB, a driver for STLINK-V3EC must be
®
and above). It is available from the
Hardware layout and configuration
www.st.com webpage.
www.st.com website periodically before
UM3359
page 11/56