Piotrek Wasilewski
Piotrek Wasilewski
Hello, please provide more details, for example a screenshot, and the latest log file (located C:\Users\\AppData\Roaming\STMViewer\logs).
Have you enabled SWD + trace (SWO) setting in cube IDE? 
Have you checked if the SWO outputs any data to the ST-Link on the SWO pin? Var Viewer works only with SWCLK, SWDIO and GND. SWO is needed additionally for...
The *.ioc seems to be correct. Have you checked the SWO signal directly at the MCU pin? Are you sure there is nothing connected to it that could interfere with...
Ok this is an improvement. Could you try different prescaler values? If you're not using an original stlink there may be some problems with maximum SWO pin bandwidth. Could you...
Have you tried modifying the prescaler?
Could you try connecting the oscilloscope so that you see proper frames? It seems you only get error frames, so maybe the problem is in the electrical connection somehow? The...
Thank you for the research! Is it possible for you to narrow down the whole SWO setup to a particular register write(s) that make it work with STMViewer?
So I meant like, are all these register writes indispensable? Or you could test which one is really necessary?
Closing due to inactivity. I currently don't have any H7 mcu on my hand - please reopen to let us know which register write was missing (or I will when...