O:\Coding\STM32F3DISCOVERY\IDE\openocd\bin-x64>openocd -f stm32f3discovery.cfg
Open On-Chip Debugger 0.6.1 (2012-10-07-10:39)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.sourceforge.net/doc/doxygen/bugs.html
adapter speed: 1000 kHz
srst_only separate srst_nogate srst_open_drain
Info : clock speed 1000 kHz
libusbx: error [init_device] device '\\.\USB#VID_0483&PID_3748#7&3A0A42BF&0&2' i
s no longer connected!
libusbx: error [init_device] device '\\.\USB#VID_0556&PID_0001#6&8C2917D&0&2' is
 no longer connected!
libusbx: info [cache_config_descriptors] could not access configuration descript
or (dummy) for '\\.\USB#VID_13D3&PID_3304#6&DBCE08D&0&5': [31] A device attached
 to the system is not functioning.
Error: open failed
in procedure 'transport'
in procedure 'init'