Measurement Computing Personal Daq rev.6.0 - Manual (Page 151)

Personal Daq User’s Manual Appendix B, 887095 API Commands B-19
daqCloseList
DLL Function daqCloseList(DaqHandleT handle);
C daqCloseList(DaqHandleT handle);
Visual BASIC VBdaqCloseList&(ByVal handle&)
Delphi daqCloseList(handle:DaqHandleT)
Parameters handle Handle to the open device list to be closed
Returns DerrNoError - No error
See Also daqOpenList
Program References MULTDEV.C
Used With PersonalDaq55/56
Description
daqCloseList is used to close a list of PersonalDaq devices opened with the daqOpenList function. After the specified device list has
been closed, no subsequent communication with the devices can be performed. To re-establish communications with any closed devices,
you must open the devices with daqOpen or daqOpenList.
daqCvtRawDataFormat
DLL Function daqCvtRawDataFormat(PVOID buf, daqAdcCvtAction action, DWORD lastRetCount, DWORD
scanCount, DWORD chanCount);
C daqCvtRawDataFormat(PVOID buf, DaqAdcCvtAction action, DWORD lastRetCount, DWORD
scanCount, DWORD chanCount);
Visual BASIC VBdaqCvtRawDataFormatSingle&(buf!(), ByVal action&, ByVal lastRetCount&, ByVal
ScanCount&, ByVal ChanCount&)
Delphi daqCvtRawDataFormat(buf:PWORD;action:daqAdcCvtAction; lastRetCount:DWORD;
scanCount:DWORD; chanCount: DWORD);
buf Pointer to the buffer containing the raw data
action The type of conversion action to perform on the raw data
lastRetCount The last retCount returned from daqAdcTransferGetStat
scanCount The length of the raw data buffer in scans
Parameters
chanCount The number of channels per scan in the raw data buffer
Returns DerrNoError No error
See Also daqAdcSetDataFormat
Program References None
Used With All devices
Description
daqCvtRawDataFormat allows the conversion of raw data to a specified format. This function should be called after the raw data has
been acquired. See the transfer data functions (daqAdcTransfer…) for more details on the actual collection of raw data.
The buf parameter specifies the pointer to the data buffer containing the raw data. Prior to calling this function, this user-allocated buffer
should already contain the entire raw data transfer. Upon completion, this data buffer will contain the converted data (the buffer must be
able to contain all the converted data).
The DacaRotate can be used to reformat a circular buffer into a linear buffer.
The scanCount parameter specifies the length of the raw buffer in scans. Since the converted data will overwrite the raw data in the
buffer, make sure the specified buffer is large enough, physically, to contain all of the converted data.
The chanCount parameter specifies the number of channels in each scan.