Honored Contributor
Honored ContributorThe incomplete I/O assignments warning usually means you defined an I/O port in your top level, but you didn't assigned it to any pin.
On device with configurable drive strength and slew rate (loke CIII), this warning also appear when you leave these parameters to the default value. Regarding the unknown pin appearing in the pin assignments, maybe it was an old I/O pin which was later removed, so the assignment is still there but refers to an unexistent signal: you simply need to remove the assignment line from the pin planner.
