DioOutMultiBit

Function

Outputs multiple bits to output bits.

Format

Ret = DioOutMultiBit ( Id , BitNo , BitNum , Data )

Parameters

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

BitNo [ VB.NET: Short ] [ C, C++: short * ] [ C#: out short ] [ Python: ctypes.POINTER(ctypes.c_short) ]
Store the logical output bit numbers into an array, and specify the base address of this array.

BitNum [ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short ]
Specify the number of bits which are specified by BitNo. The maximum number of bits is 256.

Data [ VB.NET: Byte ] [ C, C++: BYTE * ] [ C#: out byte ] [ Python: ctypes.POINTER(ctypes.c_ubyte) ]
Store the output data into an array, and specify the base address of this array. The output data are set to either 0 or 1.

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_BIT_NO	20102	Bit No. beyond the limit.
DIO_ERR_SYS_BIT_NUM	20103	Bit number beyond the limit.
DIO_ERR_SYS_BIT_DATA	20104	Bit data beyond the limit of 0 to 1.

The others (See also: Details of Error Code)

Initial Value

The initial values of output data are 0 after the device is reset. (DIO-0808RN-USB is set to 1H)

Remarks

Outputs multiple bits to output bits. Before this function is called, it is necessary that the logical bit numbers to be output are set into the array specified by BitNo. The data to be output are stored into the array named Data by the order of logical bits which are specified by PortNo.

When you want to output data to the same bit continuously, the same bit numbers are stored in the array named BitNo and the data which are to be continuously output are stored in the array named Data sequentially. In that case, the maximum number of bits and the maximum number of data are 256. When the device type is isolation, after outputting data, it necessary to wait until the data are really output. Therefore, this usage is effective only for devices that output TTL level.

Example

Outputs 1 to bit 0 and 0 to bit 1 respectively.

VB.NET	Dim Ret As Integer Dim BitNo(1) As Short Dim Data(1) As Byte BitNo(0) = 0 BitNo(1) = 1 Data(0) = 1 Data(1) = 0 Ret = DioOutMultiBit ( Id , BitNo , 2 , Data )
C, C++	long Ret; short BitNo[2] BYTE Data[2]; BitNo[0] = 0; BitNo[1] = 1; Data[0] = 1; Data[1] = 0; Ret = DioOutMultiBit ( Id , BitNo , 2 , Data );
C#	int Ret; short[] BitNo = new short[2]; byte[] Data = new byte[2]; BitNo[0] = 0; BitNo[1] = 1; Data[0] = 1; Data[1] = 0; Ret = dio.OutMultiBit ( Id , out BitNo , 2 , out Data );
Python	Ret = ctypes.c_long() BitNoType = ctypes.c_short * 2 BitNo = BitNoType() DataType = ctypes.c_ubyte * 2 Data = DataType() BitNo[0] = 0 BitNo[1] = 1 Data[0] = 1 Data[1] = 0 Ret.value = cdio.DioOutMultiBit ( Id , BitNo , 2 , Data )