U2C_RESULT U2C_SetSingleIoDirection (
            HANDLE hDevice,
             ULONG IoNumber,
             BOOL bOutput
);

The U2C_SetSingleIoDirection function configures input/output direction of the specified GPIO pin.

Parameters:

	hDevice	Handle to the U2C-12 device.
	IoNumber	The number of the GPIO pin to change direction. Numbers 0..7 correspond to Port A pins 0..7 Numbers 8..15 correspond to Port B pins 0..7 Number 16..23 correspond to Port C pins 0..7
	bOutput	The direction of the GPIO pin: bOutput = TRUE configures the GPIO pin for output bOutput = FALSE configures the GPIO pin for input

Return values:

	U2C_SUCCESS	The GPIO pin direction was successfully modified.
	U2C_HARDWARE_NOT_FOUND	U2C-12 device referenced by hDevice handle was not found.
	U2C_BAD_PARAMETER	IoNumber is out of range.