///////////////////////////////////////////////////////////////////////////////////
// ChildChange()
//
// Called when a channel is added, deleted or changed on the ai object.
///////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CetfarduinoAin::ChildChange(DWORD typeofchange, NESTABLEPROP* pChan) {
if ((typeofchange & CHILDCHANGE_REASON_MASK) == ADD_CHILD) {
if (_nChannels == MAX_CHANNELS) {
// Maximum number of channels was reached -- unable to add more.
return Error(CComBSTR("etfarduino: Maximum number of channels reached, unable to add more."));
}
if (pChan->HwChan < 0 || pChan->HwChan > 1) {
return Error(CComBSTR("etfarduino: Only channels 0 and 1 are supported."));
}
}
if (typeofchange & END_CHANGE) {
// Update the number of channels that have been added, by querying the engine
long numChans;
_EngineChannelList->GetNumberOfChannels(&numChans);
_nChannels = numChans; // Store data in the local variable _nChannels
// Treba dodati ConversionOffset za sve kanale
for (int i = 0; i < _nChannels; ++i) {
AICHANNEL* aichan = NULL;
_EngineChannelList->GetChannelStructLocal(i, (NESTABLEPROP**)&aichan);
aichan->ConversionOffset = 1 << (Bits - 1);
}
// Update all related channel information
UpdateChans(true);
// Update the sample rate given the additional channel
if (pClockSource != CLOCKSOURCE_SOFTWARE) {
CalculateSampleRate(pSampleRate);
}
}
return S_OK;
}
STDMETHODIMP CbDevice::ChildChange(ULONG typeofchange, tagNESTABLEPROP * pChan)
{
HRESULT retval=S_OK;
//int progress=typeofchange & ~CHILDCHANGE_REASON_MASK;
int type=typeofchange & CHILDCHANGE_REASON_MASK;
if (pChan) // if we have a channel
{
switch (type)
{
case ADD_CHILD :
++_nChannels;
retval=UpdateChans(false); // must exist in base class // resizes channel arrrays
_updateChildren=true;
// now set the new range
RANGE_INFO *NewInfo;
if (!retval)
{
retval=FindRange(static_cast<float>(reinterpret_cast<AICHANNEL*>(pChan)->VoltRange[0]),
static_cast<float>(reinterpret_cast<AICHANNEL*>(pChan)->VoltRange[1]),NewInfo);
if (!retval) _chanRange[_nChannels-1]=NewInfo->rangeInt;
}
if (retval)
--_nChannels;
return retval;
case DELETE_CHILD :
--_nChannels;
break;
case REINDEX_CHILD :
break;
}
}
if (typeofchange & END_CHANGE)
{
retval=UpdateChans(false); // must exist in base class
_updateChildren=true;
}
return retval;
}
