I am trying to debug my STM32 NUCLEO-F334R8 board. When I try to connect to the board via openocd from the command line . I get the following log:
openocd -f board/st_nucleo_f3.cfg
GNU MCU Eclipse 64-bits Open On-Chip Debugger 0.10.0+dev-00254-g2ec04e4e (2017-11-10-11:34)
Licensed under GNU GPL v2
adapter speed: 1000 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
none separate
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : Unable to match requested speed 1000 kHz, using 950 kHz
Info : clock speed 950 kHz
Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
Info : STLINK v2 JTAG v39 API v2 SWIM v27 VID 0x0483 PID 0x374B
Info : using stlink api v2
Info : Target voltage: 3.255227
Info : stm32f3x.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : Listening on port 3333 for gdb connections
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
It gets connected to openOCD but how to resolve the error "libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED"?
