error while uploading : open ocd child process termination reason:unplugged target or stlink already in use or stlink usbdriver not installed
i am trying to upload the programme on my stm32f3discovery board for the first time but console is giving an error as follows:
Unplugged target or STLink already in use or STLink USB driver not installed
Open On-Chip Debugger 0.10.0+dev-00021-g524e8c8 (2019-04-12-08:33)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
srst_only separate srst_nogate srst_open_drain connect_assert_srst
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 8000 kHz
adapter_nsrst_delay: 100
Info : clock speed 8000 kHz
Error: open failed (no matching adapter found)
in procedure ‘program’
in procedure ‘init’ called at file “embedded:startup.tcl”, line 495
in procedure ‘ocd_bouncer’
** OpenOCD init failed **
shutdown command invoked
i have already installed stlink drivers as they are automatically installed when we make new project . i m a linux user . please help