PortN returns n-th GPIO port.

SelPin returns pin for its compact representation.

Disconnect 0, high drive 1.

Disconnect 0, standard 1.

High drive 0, disconnect 1.

High drive 0, high drive 1.

High drive 0, standard 1.

Standard 0, disconnect 1.

Standard 0, high drive 1.

Standard 0, standard 1.

Input buffer disconnected, output disabled.

Input buffer connected, output disabled.

Input buffer connected, output enabled.

Input buffer disconnected, output enabled.

Enable pull-down resistance.

Disable pull-up/down resistance.

Enable pull-up resistance.

Sense for high level.

Sense for low level.

Sense disabled.

emgo:const.

emgo:const.

Pin represents one phisical pin (specific pin in specific port).

Port represents one GPIO port.

Pins is a bitmask which represents the pins of GPIO port.