Measurement Computing TempBook rev.3.0 - Manual (Page 140)

11-16 daqCommand Reference (Enhanced API) TempBook User’s Manual
daqAdcSoftTrig
DLL Function daqAdcSoftTrig(DaqHandleT handle);
C daqAdcSoftTrig(DaqHandleT handle);
Visual BASIC VBdaqAdcSoftTrig&(ByVal handle&)
Delphi daqAdcSoftTrig(handle:DaqHandleT)
Parameters
handle Handle to the device to which the ADC software trigger is to be applied
Returns DerrNoError - No error (also, refer to API Error Codes on page 11-39)
See Also daqAdcSetTrig, daqAdcSetAcq
Program References None
Used With All devices
daqAdcSoftTrig is used to send a software trigger command to the Daq* device. This software
trigger can be used to initiate a scan or an acquisition from a program after configuring the software
trigger as the trigger source. This function may only be used if the trigger source for the acquisition
has been set to DatsSoftware with the daqAdcSetTrig function.
daqAdcTransferBufData
DLL Function daqAdcTransferBufData(DaqHandleT handle, PWORD buf, DWORD scanCount,
DaqAdcBufferXferMask bufMask, PDWORD retCount);
C daqAdcTransferBufData(DaqHandleT handle, PWORD buf, DWORD scanCount,
DaqAdcBufferXferMask bufMask, PDWORD retCount);
Visual BASIC VBdaqAdcTransferBufData(ByVal handle, buf%, ByVal scanCount&, ByVal bufMask&,
retCount&);
Delphi daqAdcTransferBufData(handle: DaqHandleT; buf : PWORD, scanCount : DWORD,
bufMask: DaqAdcBufferXferMask; retCount: PDWORD);
Parameters
handle Handle to the device for which the ADC buffer should be retrieved.
buf Pointer to an application-supplied buffer to place the buffered data.
scanCount Number of scans to retrieve from the acquisition buffer.
bufMask A mask defining operation depending on the current state of the acquisition buffer
retCount A pointer to the total number of scans returned, if any.
Returns DerrNoError - No error (also, refer to API Error Codes on page 11-39)
See Also daqAdcTransferSetBuffer, daqAdcTransferGetStat
Program References ADCEX9.C, ADCEX10.C
Used With All devices
daqAdcTransferBufData requests a transfer of scanCount scans from the driver-allocated
ADC acquisition buffer to the specified user-supplied buffer. The bufMask parameter can be used
to specify the conditions for the transfer as follows:
•
DabtmWait - Instructs the function to wait until the requested number of scans are available
in the driver-allocated acquisition buffer. When the requested number of scans are available,
the function will return with retCount set to scanCount, the number of scans requested.
ADC data will be returned in the memory referred to by the buf parameter.
•
DabtmNoWait - Instructs the function to return immediately if the specified number of scans
are not available when the function is called. If the entire amount requested is not available,
the function will return with no data and retCount will be set to 0. If the requested number
of scans are available in ADC acquisition buffer, the function will return with retCount set
to scanCount, the number of scans requested. ADC data will be returned in the memory
referred to by the buf parameter.
•
DabtmRetAvail - Instructs the function to return immediately, regardless of the number of
scans available in the driver-allocated acquisition buffer. The retCount parameter will
return the total number of scans retrieved. retCount can return anything from 0 to
scanCount
, the number of scans requested. ADC data will be returned in the memory
referred to by the buf parameter.
The driver-allocated acquisition buffer must have been allocated prior to calling this function. This
is performed via the daqAdcTransferSetBuffer. Refer to daqAdcTransferSetBuffer
for more details on specifying the driver-allocated acquisition buffer.