'no ST-LINK detected' error when changing USB port of my PC while using STM32F401RE board

[ckim]

Posted on November 30, 2015 at 12:39

when tyring to download and run, I'm seeing 'No ST-LINK detected' error after I connect the STM32F401RE board to a USB port of my PC which is a different USB port from the one I have been using. When I switch back to old USB port  it just works fine. Somehow the uVision seems to be 'remembering' the USB port of the PC it is using. Does anybody know how to avoid this problem? (I want to use another USB port for some reason.)

[Tesla DeLorean]

Posted on November 30, 2015 at 15:14

And does Device Manager see the ST-LINK as being present when inserted in the problem port? If Windows doesn't see it, no amount of magic in Keil will fix it.

Can't say I've had this issue, if you go into the Project Options -> Debug -> Debugger Settings, can it see it there? Or select it at the new location?

[ckim]

Posted on December 01, 2015 at 08:08

I found there was another uVision window running the debugger. On second thought, probably that was because I was holding the debugger on another MDK-ARM sesssion.  Thanks.