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ST-Link disconnects frequently

Question asked by John Griswold on Nov 4, 2017
Latest reply on Nov 4, 2017 by Clive One

I am debugging on a couple of Nucleo boards, one a F767ZI, the other a L433RC. Both have had the ST-Link boards removed, with a wiring harness to connect the ST-Link board to the boards under test.


Very frequently the debugger link will drop unexpectedly, and I am unable to continue with my session. I need to stop the debug session, restart the debug session, and then try to get back to where I was debugging, always with completely different data (live samples are coming in). I doubt I can have a debug session last for more than ten minutes.


Is this an artifact of separating the ST-Link board from the main board? Is there something else I'm doing wrong? Or is my currently-low opinion of the STM boards warranted? I'd like to think I was doing something that can be remedied by a bit of behavior modification.


Any words of wisdom? I know there's wisdom out there.


Best regards,