NUCLEO_F746ZG OpenOCD
Hi Kevin,
Yes, System Workbench for STM32 is able to debug all ST boards and chips(if you don’t find it, just do an update by “Help >> Check for updates...”); there is a lot of work invested in keeping up-to-date with chip and board releases...
Regarding import from mbed, it is still a bit complex (you should look at Importing an mbed program for more explanation) but it should become simpler soon as the export of System Workbench project by mbed is in the works...
Regards,
Bernard (Ac6)