9: GPIO Interface
Command 10h, Get Functions
1 means general purpose I/O available to the user.
0 means dedicated function (e.g., serial flow control, diagnostics) for
configurable pin X.
Command 11h, Get Directions
1 means GPIO X is an output.
Command 12h, Get Active Levels
1 means GPIO X is active low (0V when active, 3.3V when inactive).
0 means it is active high (3.3V when active, 0V when inactive).
Command 13h, Get Current States
xPico User Guide 64