User Activity

I would like to be able to write debugging messages to a serial terminal. Is there sample code that does this? Is there something I need to know about setting up clocks that is special for ST-LINK v3? How does one know which uart is connected to ST-L...
I'm interested in either connecting external memory to an eval board or getting an eval board with external memory already on it. I'm most interested in PSRAM, but other forms of memory may do. My main focus ins STM32H7, but if there is a solution fo...