u8 portIn (u16 portNumber)
|portNumber : The port number from which to read|
|returns the input state of portNumber|
Reads the input state of the given port, portNumber. If the voltage on the port is less than the module's Off Level, portIn returns 0 (Off). If the voltage on the port is greater the module's On Level, portIn returns 1 (On).
u8 i = portIn(20); // Reads the input state of port 20 and stores the result in variable i