DioDmGetCount

Function

Retrieves the transfer count number.

Format

Ret = DioDmGetCount ( Id , Direction , Count , Carry )

Parameters

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

Direction [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Set the transfer direction.

Definition

Value

[Dec]

Description

DIODM_DIR_IN

Input

DIODM_DIR_OUT

Output

Count [ VB.NET: Integer ] [ C, C++: unsigned long * ] [ C#: out uint ] [ Python: ctypes.POINTER(ctypes.c_ulong) ]
Specify the address of the variable to store the count number.

Carry [ VB.NET: Integer ] [ C, C++: unsigned long * ] [ C#: out uint ] [ Python: ctypes.POINTER(ctypes.c_ulong) ]
Specify the address of the variable to store the carry count.

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_DLL_CALL_DRIVER	10002	Not call the driver (Failure on DEVICE I/O CONTROL).
DIO_ERR_DLL_BUFF_ADDRESS	10100	Invalid data buffer address.
DIO_ERR_SYS_NOT_SUPPORTED	20001	This board couldn't use this function.
DIO_ERR_SYS_IODIRECTION	20500	Direction value is out of range.

The others (See also: Details of Error Code)

Initial Value

None

Remarks

The 64-bit count number is returned by combining Count with Carry.

When using the DIO-32DM3-PE, the data is transferred to the PC side every 2-2048 samplings for optimization.
Therefore, there is such a possibility that the count doesn't work when the clocks input, but the sampling is performed.
When the transfer is completed, the rest of the data will also be transferred.

Example

Retrieves the count number of input transfer.

VB.NET	Dim Ret As Integer Dim Count As Integer Dim Carry As Integer Ret = DioDmGetCount ( Id , DIODM_DIR_IN , Count , Carry )
C, C++	long Ret; long Count; long Carry; Ret = DioDmGetCount ( Id , DIODM_DIR_IN , &Count , &Carry );
C#	int Ret; int Count; int Carry; Ret = dio.DmGetCount ( Id , (short)CdioConst.DIODM_DIR_IN , out Count , out Carry );
Python	Ret = ctypes.c_long() Count = ctypes.c_ulong() Carry = ctypes.c_uong() Ret.value = cdio.DioDmGetCount ( Id , cdio.DIODM_DIR_IN , ctypes.byref(Count) , ctypes.byref(Carry) )