Measurement-computing ADLIB WIN Manuale Utente Scaricare il pdf (Pagina 125)

Chapter 40 Buffer Handler Functions

27-5

27.5 AL_SetBuffer

Prototype C\C++

(16 Bit) ERRNUM AL_SetBuffer(LHLD lhld, long lBuffNum, int _far *fpDataBuff,

long lStartPoint, long lCount );

(32 Bit) ERRNUM AL_SetBuffer(LHLD lhld, long lBuffNum, int *fpDataBuff,

long lStartPoint, long lCount );

Visual Basic for Windows

Function AL_ SetBuffer(ByVal lhld As Long, ByVal lBuffNum As Long,

fpDataBuff as Integer, ByVal lStartPoint As Long,

ByVal lCount As Long) As Long

LHLD lhld handle of the LDSD

long lBuffNum specifies the buffer number

int _far * fpDataBuff source address of the data buffer

long lStartPoint starting point in the destination buffer to be set

long lCount number of samples

The AL_SetBuffer function copies the user fpDataBuff source buffer to the LDSD destination buffer

specified by lBuffNum. This function is used to copy the waveform data to the specified ADLIB buffers for

the Pci55xx DtoA devices.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

lBuffNum Specifies the ID number of the LDSD buffer to be copied.

fpDataBuff Specifies the user buffer source address.

lStartPoint Starting sample point in the LDSD source buffer to be set.

lCount Number of fpDataBuff samples to be copied.

Returns:

On success the specified LDSD data buffer is updated with the specified fpDataBuff data samples,

otherwise ERRNUM contains the last error code that occurred during the call.

Related Functions:

AL_SetNumOfBuffers

AL_SetBufferSize

Supported Logical Device Subsystems:

Pci55xx Series: DAC0, DAC1

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Measurement-computing ADLIB WIN Manuale Utente Pagina 125