DioStartCount

Function

Starts the count operation.

Format

Ret = DioStartCount ( Id , ChNo , ChNum )

Parameters

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

ChNo [ VB.NET: Short ] [ C, C++: short * ] [ C#: out short ] [ Python: ctypes.POINTER(ctypes.c_short) ]
Specify the start address of the array that stores the channel number to start counting.

ChNum [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the number of channels specified in ChNo.

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_CH_NO	20105	The channel number is out of specifiable range.
DIO_ERR_SYS_CH_NUM	20106	The number of channels is out of the specifiable range.

The others (See also: Details of Error Code)

Remarks

- Starts the count of the specified channels.

Example

Starts the count of channel 0 and channel 1.

VB.NET	Dim Ret As Integer Dim ChNo(1) As Short ChNo(0) = 0 ChNo(1) = 1 Ret = DioStartCount( Id , ChNo , 2 )
C, C++	long Ret; short ChNo[2] ChNo[0] = 0; ChNo[1] = 1; Ret = DioStartCount( Id , ChNo , 2 );
C#	int Ret; short[] ChNo = new short[2]; byte[] CountEdge = new byte[2]; ChNo[0] = 0; ChNo[1] = 1; Ret = dio.StartCount( Id , out ChNo , 2 );
Python	Ret = ctypes.c_long() ChNoType = ctypes.c_short * 2 ChNo = ChNoType() ChNo[0] = 0 ChNo[1] = 1 Ret.value = cdio.DioStartCount( Id , ChNo , 2 )