c:\ProgramData\VMicro\tools\openocd-0.10.0.1Orig>openocd -f interface/stlink-v2.cfg -f board/st_nucleo_f4.cfg Open On-Chip Debugger 0.10.0 (2019-12-16) [https://github.com/sysprogs/openocd] Licensed under GNU GPL v2 libusb1 09e75e98b4d9ea7909e8837b7a3f00dda4589dc3 For bug reports, read http://openocd.org/doc/doxygen/bugs.html WARNING: interface/stlink-v2.cfg is deprecated, please switch to interface/stlink.cfg Warn : Interface already configured, ignoring Error: already specified hl_layout stlink Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD srst_only separate srst_nogate srst_open_drain connect_deassert_srst Info : Listening on port 6666 for tcl connections Info : Listening on port 4444 for telnet connections Info : clock speed 2000 kHz Info : STLINK v2 JTAG v33 API v2 SWIM v7 VID 0x0483 PID 0x3748 Info : using stlink api v2 Info : Target voltage: 3.236243 Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Stlink adapter speed set to 1800 kHz Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints Info : Listening on port 3333 for gdb connections