Enum pl_io_port_num contains the list of available 8-bit GPIO ports. Use these constants when selecting the port with the io. object (see the io.portnum property).
Note that GPIO lines are of b idirectional type and do not require explicit configuration as outputs or inputs.
Enum pl_io_port_num includes the following constants:
|0- PL_IO_PORT_NUM_0:||8-bit port 0 (P0). Contains I/O lines 0-7.|