STDMETHODIMP CLabInput::GetSingleValues(VARIANT* values)
{
AUTO_LOCK; // Should not be needed inserted on a whim
if (!_isConfig)
DAQ_CHECK(Configure(FORSINGLEVALUE));
// 3 SCANS IS THE MIN with scan_op
SAFEARRAY *ps = SafeArrayCreateVector(VT_I2, 0, _nChannels*2);
if (ps==NULL) return E_SAFEARRAY_ERR;
// set the data type and values
V_ARRAY(values)=ps;
V_VT(values)=VT_ARRAY | VT_I2;
TSafeArrayAccess <short > binarray(values);
if (_nChannels<=2)
{
for (int i=0; i<_nChannels; i++)
{
DAQ_CHECK(AI_Read(_id, _chanList[i], _gainList[i], &binarray[i]));
}
}
else
{
// setup the channels to read and scan them
DAQ_TRACE(Set_DAQ_Device_Info(_id, ND_DATA_XFER_MODE_AI, ND_INTERRUPTS));
short *dummy=(short*)_alloca(_nChannels*sizeof(short));
DAQ_CHECK(Lab_ISCAN_Op(_id,static_cast<i16>(_nChannels),_gainList[0],&binarray[0],
_nChannels, 1.0/_chanSkew,0,dummy));
}
return S_OK;
}
i16 device::setTransferMode(counter* const ctr, dma_channel* const dma)
{
static u32 CounterDataXferCodes[] =
{
ND_DATA_XFER_MODE_GPCTR0,
ND_DATA_XFER_MODE_GPCTR1,
ND_DATA_XFER_MODE_GPCTR2,
ND_DATA_XFER_MODE_GPCTR3,
ND_DATA_XFER_MODE_GPCTR4,
ND_DATA_XFER_MODE_GPCTR5,
ND_DATA_XFER_MODE_GPCTR6,
ND_DATA_XFER_MODE_GPCTR7
};
if (status==0)
{
u32 modecode = dma != NULL ? ND_UP_TO_1_DMA_CHANNEL : ND_INTERRUPTS;
status = Set_DAQ_Device_Info (deviceno,
CounterDataXferCodes[ctr->getCounterNo()], modecode);
}
return status;
}
