Gx5731GetPortByte

Reads a port byte value.

Gx5731GetPortByte (nHandle, nPort, nByte, pucValue, pnStatus)

Name	Type	Description
nHandle	SHORT	Handle to a GX5731 board.
nPort	SHORT	Digital I/O port numbers are as follow: Digital I/O port numbers 3-6. Any port number 0 to 2 that has no I/O module installed.
nByte	SHORT	Port byte number: 0-3, 0 for the port low order byte and 3 for the high order byte.
pucValue	PBYTE	Returned value 0-255. Each bit represents the specific channel state bit 0 for lowest channel number.
pnStatus	LPSHORT	Returned status: 0 on success, negative number on failure.

Use the Gx5731SetPortByte to write data to the port bit when in Output direction.

The following example reads port 1, byte 2 value:

SHORT nStatus;

BYTE ucValue;

Gx5731GetPortByte (nHandle, 1, 2, &ucValue, &nStatus);