Hardware layout and configuration
UM2198
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DocID030511 Rev 1
8.3 Embedded
ST_LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32H743I-
EVAL Evaluation board. Compared to ST-LINK/V2 the changes are listed below.
The new features supported on ST-LINK/V2-1 are:
•
USB software re-enumeration
•
Virtual COM port interface on USB
•
Mass storage interface on USB
•
USB power management request for more than 100mA power on USB
This feature is no more supported on ST-LINK/V2-1: SWIM interface
For all general information concerning debugging and programming features common
between V2 and V2-1 versions, refer to
ST-LINK/V2 in-circuit debugger/programmer for
STM8 and STM32
User manual (UM1075) at the
www.st.com
website.
Note:1
It is possible to power the Evaluation board through CN23 (Embedded ST-LINK/V2-1 USB
connector) even if an external tool is connected to CN8 (ETM Trace connector) or CN9
(External JTAG and SWD connector).
Note:2
ETM can only work at 50 MHz clock by default because ETM signals are shared with other
peripherals. If better performance of ETM is required (84 MHz/98 MHz), R217, R230, R231,
R234, R236, SB2, SB5, SB8, SB11, SB42, SB57 must be removed to reduce the stub on
ETM signals. In this configuration SAI and PDM are not functional and NOR Flash and the
address of SRAM are limited on A18.
Note:3
ETM trace function would be abnormal as SAI_SDB share the same pins with TRACE_D0,
and TRACE_D0 would be forced high by SAI_SDB. When using ETM trace it is necessary
to set ADCDAT1 pin (SAI_SDB signal of the STM32) of audio codec WM8994ECS/R (U22)
by software to be tri-state.
8.3.1 Drivers
Before connecting the STM32H743I-EVAL Evaluation board to a Windows
®
PC (XP, 7, 8 or
10) through a USB, a driver for the ST-LINK/V2-1 must be installed. It is available at the
www.st.com
website.
In case the STM32H743I-EVAL Evaluation board is connected to the PC before the driver is
installed, some STM32H743I-EVAL interfaces may be declared as "unknown" in the PC
device manager. To recover from this situation the user has to install the driver files, and
update the driver of the connected device from the device manager (see
Figure 5
).
Note:
Prefer using the "USB Composite Device" handle for a full recovery.
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