Gx3788PioGetPortDirection

Purpose

Returns the direction (input or output) settings of a selected digital port.

Gx3788PioGetPortDirection (nHandle, nPort, pdwDirection, pnStatus)

Name	Type	Comments
nHandle	SHORT	Handle to a GX3788 board.
nPort	SHORT	Select the digital port to get: 0. GX3788_PIO_PORT0: Digital Port 0. 1. GX3788_PIO_PORT1: Digital Port 1. 2. GX3788_PIO_PORT2: Digital Port 2.
pdwDirection	PDWORD	Returns the direction settings of the selected digital port: 0. GX3788_PIO_PORT_DIRECTION_IN: Digital channel is an input. 1. GX3788_PIO_PORT_DIRECTION_OUT: Digital channel is an output.
pnStatus	PSHORT	Returned status: 0 on success, negative number on failure.

Digital Port 0 contains the positive 32 channels of the 32 differential pairs.

Digital Port 1 contains the negative 32 channels of the 32 differential pairs.

Digital Port 2 contains the 32 single-ended channels.

The following example sets channels 0 to 4 of digital port 0 to output and channels 5 to 31 to input, and returns the settings:

SHORT nStatus;

DWORD dwDirection;

Gx3788PioSetPortDirection (nHandle, GX3788_PIO_PORT0, 0x1F, &nStatus);

Gx3788PioGetPortDirection (nHandle, GX3788_PIO_PORT0, &dwDirection, &nStatus);