dear Friends
can anyone tell me how to read waveform data from NI PCI 5153 Data Acquisition card? I tried the following:
#include "niScope.h"
#include "niHWS.h"
#include "NIPCI.h"
int main(int argc, char* argv[])
{
ViSession vi; ViSession* v;
ViInt32 acquisitionType = NISCOPE_VAL_NORMAL;
ViConstString channelList = "0", channel = "0";
ViReal64 timeout = 0;
ViInt32 numSamples, waveformSize = 1000;
ViInt32* actualPoints;
ViReal64* wfm, *xIncrement, *initialX;
ViInt8* wfm8;
ViReal64 waveform[2000];
struct niScope_wfmInfo* wfmInfo;
wfm = new ViReal64[2000];
for( int i = 0; i < 2000; i++ )
{
wfm[i] = 100;
waveform[i] = 200;
}
ViInt32 actualRecordLength, numWfms;
ViRsrc resourceName = "DAQ::1"; ViBoolean IDQuery = VI_TRUE; ViBoolean resetDevice = VI_TRUE ;
niScope_init("Dev1", VI_FALSE, VI_TRUE, &vi);
niScope_InitiateAcquisition (vi);
niScope_Fetch(vi, channelList, timeout, numSamples, wfm, wfmInfo);
printf( "%f\n", wfm[10] );
printf( "%f\n", wfm[21] );
printf( "%f\n", wfm[42] );
printf( "%f\n", wfm[53] );
printf( "\n\n\n" );
}
It prints only 200.0, that means the array does not have any data.
How to retrieve data from NI PCI 5153??
Please
Bapi
