DioGetIoDirection

Function

Retrieves I/O direction of I/O ports.

Format

Ret = DioGetIoDirection ( Id , Dir )

Parameters

Id [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from DioInit.

Dir [ VB.NET: Integer ] [ C, C++: long * ] [ C#: out int ] [ Python: ctypes.POINTER(ctypes.c_long) ]
Specify the address of the variable to store the I/O direction.

Bit = 0: Input
Bit = 1: Output

Return Value

Ret [ VB.NET: Integer ] [ C, C++: long ] [ C#: int ] [ Python: ctypes.c_long ]

Definition	Value [Dec]	Description
DIO_ERR_SUCCESS	0	Normal completed.
DIO_ERR_SYS_RECOVERED_FROM_STANDBY	7	Execute DioResetDevice function because the device has recovered from standby mode.
DIO_ERR_DLL_INVALID_ID	10001	Invalid ID specified.
DIO_ERR_SYS_NOT_SUPPORTED	20500	Direction value is out of range.

The others (See also: Details of Error Code)

Remarks

Please use the DioGet8255Mode function for the board with 8255.

Example

Retrieves the I/O direction being set.

VB.NET	Dim Ret As Integer Dim Dir As Integer Ret = DioGetIoDirection ( Id , Dir )
C, C++	long Ret; long Dir; Ret = DioGetIoDirection ( Id , &Dir );
C#	int Ret; int Dir; Ret = dio.GetIoDirection ( Id , out Dir );
Python	Ret = ctypes.c_long() Dir = ctypes.c_long() Ret.value = cdio.DioGetIoDirection ( Id , ctypes.byref(Dir) )