Using the .NET (C#) DAQmx dirvers I am not getting a reference trigger when using a PCI-6111. I get the triggers fine with a PCI-6115 and PC-MIO-16. I was under the impression that the API was not device specific, so I am a bit surprised by the behaviour.
I previously ran into an issue with a few particular 6111s, and had to modify the code to get around that. I am assuming that the previous problem has been solved. Here is what I am doing:
foreach (int channelIndex in m_ActiveChannelList)
{
string channelName = string.Empty;
// Set this to -1 to let the NI driver decide which terminal configuration to use
int useDefaultTerminalConfig = -1;
// Get the name of the current channel
channelName = BASE_CHANNEL_NAME + channelIndex;
// Create the channel
m_DAQmxTask.AIChannels.CreateVoltageChannel(m_Device.AIPhysicalChannels[channelIndex], channelName, (
AITerminalConfiguration)useDefaultTerminalConfig,
-10.0, 10.0,
AIVoltageUnits.Volts);
}
foreach (AIChannel curChannel in m_DAQmxTask.AIChannels)
{
curChannel.DataTransferMechanism =
AIDataTransferMechanism.Interrupts;
}
// Setup the sample clock
m_DAQmxTask.Timing.ConfigureSampleClock(
string.Empty, m_ClockFrequency, SampleClockActiveEdge.Rising,
SampleQuantityMode.FiniteSamples, m_NScans);
// Setup the reference trigger
m_DAQmxTask.Triggers.ReferenceTrigger.ConfigureDigitalEdgeTrigger(
"PFI1", DigitalEdgeReferenceTriggerEdge.Rising, m_PreTriggersScans);
// Set the time out
m_DAQmxTask.Stream.Timeout = (m_Timeout * 1000) - 500;
