int NationalInstrumentsDAQ::writeAO(float64 *data)
{
int32 written,
N = _config->ao_samples_per_waveform();
#if 0
{
uInt32 nchan;
char
buf[1024],
name[1024];
memset(buf ,0,sizeof(buf ));
memset(name,0,sizeof(name));
DAQWRN( DAQmxGetTaskName(_ao.daqtask,name,sizeof(name)) );
DAQWRN( DAQmxGetTaskNumChans(_ao.daqtask,&nchan) );
DAQWRN( DAQmxGetTaskChannels(_ao.daqtask,buf,sizeof(buf)) );
HERE;
debug("NI-DAQmx Task (%s) has %d channels"ENDL"\t%s"ENDL,
name,
nchan,
buf);
while(nchan--)
{ DAQWRN( DAQmxGetNthTaskChannel(_ao.daqtask, 1+nchan, buf, sizeof(buf)) );
DAQWRN( DAQmxGetPhysicalChanName(_ao.daqtask, buf, buf, sizeof(buf)) );
debug("\t%d:\t%s"ENDL,nchan,buf);
}
}
{
FILE *fp = fopen("NationalInstrumentsDAQ_writeAO.f64","wb");
fwrite(data,sizeof(f64),3*N,fp);
fclose(fp);
}
#endif
DAQJMP( DAQmxWriteAnalogF64(_ao.daqtask,
N,
0, // autostart?
1.0, // timeout (s) - to write - 0 causes write to fail if blocked at all
DAQmx_Val_GroupByChannel,
data,
&written,
NULL));
Guarded_Assert( written == N );
return 0; // success
Error:
return 1; // fail
}
// this is copied from ContinuousAI.c Not fully sure how it works.
int32 GetTerminalNameWithDevPrefix(TaskHandle taskHandle, const char terminalName[], char triggerName[])
{
int32 error = 0;
char chan[256];
char *slash;
daq_err_check( DAQmxGetNthTaskChannel(taskHandle, 1, chan, 256) );
daq_err_check( DAQmxGetPhysicalChanName(taskHandle, chan, chan, 256) );
if( (slash =strchr(chan,'/')) != NULL){
*slash = '\0';
*triggerName++ = '/';
strcat(strcat(strcpy(triggerName,chan),"/"),terminalName);
} else
strcpy (triggerName, terminalName);
return 0;
}
