STLink V3 + OpenOCD + STM32H747
If you are running Linux and you instilled OpenOCD with sudo apt install openocd Make sure you check version with openocd --version If version is " Open On-Chip Debugger 0.11" there is very big chance your STLink V3 wan't connect to STM32H747 MCUs. I got this error message: openocd -f /usr/share/openocd/scripts/interface/stlink.cfg -f /usr/share/openocd/scripts/target/stm32h7x.cfg Open On-Chip Debugger 0.11.0 Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'. Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD Info : Listening on port 6666 for tcl connections Info : Listening on port 4444 for telnet connections Info : clock speed 1800 kHz Error: open failed Make sure to build latest OpenOCD. For me it start
