Resolved! STM32L552 - trying to set 3 GPIO Pins as inputs(w/ wo pull-downs) to be read before most initialization, but some pins on the board are always HIGH?
I'm trying to use 3 GPIO Pins as a 3-bit ID essentially. Depending on the values read, the uC will configure itself in an appropriate way (1 bin fits all tools essentially). The problem I'm having is that with the eval board the pins are pretty close...