1.2.9.2 SYS_PORT_PinRead Function

bool SYS_PORT_PinRead(SYS_PORT_PIN pin)

Read the selected pin value.

This function reads the selected pin value. it reads the value regardless of pin configuration, whether uniquely as an input, or driven by the PIO Controller, or driven by peripheral.

Reading the I/O line levels requires the clock of the PIO Controller to be enabled, otherwise this API reads the levels present on the I/O line at the time the clock was disabled.

Returns the read value of the selected I/O pin.

bool value;
value = SYS_PORT_PinRead(SYS_PORT_PIN_PB3);

To read the latched value on this pin, SYS_PORT_PinLatchRead API should be used.