private bool RunTask(InOutPortFlags flags)
{
if (flags.HasFlag(InOutPortFlags.UseInput))
{
var result = NidaQmxHelper.DAQmxStartTask(_device.InputTaskHandle);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
}
//if (flags.HasFlag(InOutPortFlags.UseOutput)) {
// var result = NidaQmxHelper.DAQmxStartTask(_device.OutputTaskHandle);
// if (result < 0) {
// NidaQmxHelper.DAQmxStopTask(_device.InputTaskHandle);
// NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
// NidaQmxHelper.DAQmxClearTask(_device.OutputTaskHandle);
// _device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
// return false;
// }
//}
return(true);
}
public void DestroyTask()
{
if (TaskHandle != 0) //throw new InvalidOperationException("Task not yet created. First create a task");
{
NidaQmxHelper.DAQmxClearTask(TaskHandle);
TaskHandle = 0;
}
SamplesPerChannel = 0;
_nodes.Clear();
State = SessionTaskState.None;
}
private bool ConfigureDevClock(InOutPortFlags flags)
{
if (flags.HasFlag(InOutPortFlags.UseInput))
{
var result = NidaQmxHelper.DAQmxCfgSampClkTiming(
activeEdge: NidaQmxHelper.DaQmxValRising,
sampleMode: NidaQmxHelper.DaQmxValContSamps,
sampsPerChan: (ulong)_device.SamplesPerChannelInput,
taskHandle: _device.InputTaskHandle,
source: "",
rate: _device.SamplerateInput
);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
}
if (flags.HasFlag(InOutPortFlags.UseOutput))
{
var result = NidaQmxHelper.DAQmxCfgSampClkTiming(
activeEdge: NidaQmxHelper.DaQmxValRising,
sampleMode: NidaQmxHelper.DaQmxValContSamps,
sampsPerChan: (ulong)_device.SamplesPerChannelOutput,
taskHandle: _device.OutputTaskHandle,
source: "",
rate: _device.SamplerateOutput
);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
NidaQmxHelper.DAQmxClearTask(_device.OutputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
result = NidaQmxHelper.DAQmxCfgOutputBuffer(_device.OutputTaskHandle, _device.SamplesPerChannelOutput);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
NidaQmxHelper.DAQmxClearTask(_device.OutputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
}
return(true);
}
private void CleanupAndThrow(int code)
{
NidaQmxHelper.DAQmxClearTask(TaskHandle);
TaskHandle = 0;
SamplesPerChannel = 0;
_nodes.Clear();
State = SessionTaskState.None;
if (_counter != null)
{
_counter.Dispose();
}
throw new NidaqException(code);
}
public void StopSampling()
{
if (!Recording)
{
return;
}
NidaQmx2Singleton.Instance.Stop();
NidaQmxHelper.DAQmxClearTask(InputTaskHandle);
NidaQmxHelper.DAQmxClearTask(OutputTaskHandle);
CreateTaskHandle();
Recording = false;
}
public void DestroyTask()
{
if (TaskHandle == 0)
{
throw new InvalidOperationException("Task not yet created. First create a task");
}
NidaQmxHelper.DAQmxClearTask(TaskHandle);
TaskHandle = 0;
SamplesPerChannel = 0;
_nodes.Clear();
if (_counter != null)
{
_counter.Dispose();
}
State = SessionTaskState.None;
}
private void CleanupAndThrow(int code, bool doThrow = true)
{
NidaQmxHelper.DAQmxClearTask(TaskHandle);
TaskHandle = 0;
SamplesPerChannel = 0;
_nodes.Clear();
State = SessionTaskState.None;
if (doThrow)
{
throw new NidaqException(code);
}
else
{
Parent.SessionGraph.Context.Notify(
new NodeSystemLib2.Generic.GraphNotification(
NodeSystemLib2.Generic.GraphNotification.NotificationType.Error,
NidaQmxHelper.GetError(code)
)
);
}
}
private bool CreateVirtualChannel(InOutPortFlags flags)
{
// ------------------------------------
if (flags.HasFlag(InOutPortFlags.UseInput))
{
var inputs = _device.ListeningPorts.Where(port => port.Direction == ChannelDirection.Input)
.Select(port => port.Name);
if (inputs.Any())
{
var inputPortStrings = string.Join(",", inputs);
var result = NidaQmxHelper.DAQmxCreateAIVoltageChan(
maxVal: 10.0,
minVal: -10.0,
units: NidaQmxHelper.DaQmxValVolts,
terminalConfig: NidaQmxHelper.DaQmxValRse,
physicalChannel: inputPortStrings,
taskHandle: _device.InputTaskHandle,
nameToAssignToChannel: "chanI" + _device.Name,
customScaleName: null
);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.InputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
}
}
// ------------------------------------
if (flags.HasFlag(InOutPortFlags.UseOutput))
{
var outputs = _device.ListeningPorts.Where(port => port.Direction == ChannelDirection.Output)
.Select(port => port.Name);
if (outputs.Any())
{
var outputPortStrings = string.Join(",", outputs);
var channelNumber = 0;
foreach (var output in _device.ListeningPorts.Where(port => port.Direction == ChannelDirection.Output))
{
((NidaQmxChannelOutput)output).ChannelNumber = channelNumber++;
}
var result = NidaQmxHelper.DAQmxCreateAOVoltageChan(
maxVal: 10.0,
minVal: -10.0,
units: NidaQmxHelper.DaQmxValVolts,
physicalChannel: outputPortStrings,
taskHandle: _device.OutputTaskHandle,
nameToAssignToChannel: "chanO" + _device.Name,
customScaleName: null
);
if (result < 0)
{
NidaQmxHelper.DAQmxClearTask(_device.OutputTaskHandle);
_device.ReportError(new DeviceErrorArgs(NidaQmxHelper.GetError(result)));
return(false);
}
}
}
// ------------------------------------
return(true);
}