Resolved! I got two STM32H735 Discovery kits (STM32H735G-DK) and broke them somehow by connecting both via USB at the same time. A) What causes these problems and what can be done to avoid them? B) What can be done to revive the boards?
I performed the following steps:1) Set JP7 to STLK2) Connect USB -> Demo starts correctly3) Flash a simple self-written code (sets LED to state of user-button) via OpenOCD -> ST-Link works4) Flash a second self-written code (sets both LED to state of...