/// <summary>Synchronizes the RF and envelope signal generators, and initiates generation.</summary>
/// <param name="rfVsg">The open RFSG session corresponding to the RF signal generator.</param>
/// <param name="envVsg">The open RFSG session corresponding to the envelope signal generator.</param>
/// <param name="syncConfig">Specifies common settings used for synchronizing the RF and envelope signal generators.</param>
public static void InitiateSynchronousGeneration(NIRfsg rfVsg, NIRfsg envVsg, SynchronizationConfiguration syncConfig)
{
TClock tclk = new TClock(new ITClockSynchronizableDevice[] { rfVsg, envVsg });
// The PXIe-5840 can only apply positive delays so we have to establish an inital delay of -RFDelayRange/2 for TCLK to handle negative shifts as well
tclk.DevicesToSynchronize[0].SampleClockDelay = -syncConfig.RFDelayRange_s / 2.0;
rfVsg.Arb.RelativeDelay = syncConfig.RFDelayRange_s / 2.0 + syncConfig.RFDelay_s;
tclk.ConfigureForHomogeneousTriggers();
tclk.Synchronize();
tclk.Initiate();
}
private static void MapAndConfigTrigger(NIScope scopeSession, AITriggerConfiguration triggerConfiguration, ref TClock tClockSession)
{
//配置触发沿
ScopeTriggerSlope triggerSlope;
switch (triggerConfiguration.TriggerEdge)
{
case Edge.Rising:
triggerSlope = ScopeTriggerSlope.Positive;
break;
case Edge.Falling:
triggerSlope = ScopeTriggerSlope.Negative;
break;
default:
throw new Exception("触发沿 TriggerEdge 设置错误！");
}
//设置触发源
ScopeTriggerSource triggerSource = triggerConfiguration.TriggerSource.ToString();
//设置触发模式
switch (triggerConfiguration.TriggerType)
{
case AITriggerType.Immediate:
scopeSession.Trigger.Type = ScopeTriggerType.Immediate;
scopeSession.Trigger.ConfigureTriggerImmediate();
break;
case AITriggerType.DigitalTrigger:
scopeSession.Trigger.Type = ScopeTriggerType.DigitalEdge;
scopeSession.Trigger.ConfigureTriggerDigital(triggerSource, triggerSlope, PrecisionTimeSpan.Zero, new PrecisionTimeSpan(triggerConfiguration.Delay));
break;
case AITriggerType.AnalogTrigger:
scopeSession.Trigger.Type = ScopeTriggerType.Edge;
scopeSession.Trigger.EdgeTrigger.Configure(triggerSource, 2.5, triggerSlope, ScopeTriggerCoupling.DC, PrecisionTimeSpan.Zero, new PrecisionTimeSpan(triggerConfiguration.Delay));
break;
default:
throw new Exception("触发模式 TriggerType 设置错误！");
}
//如果不是非同步
//加入到TClock中
if (triggerConfiguration.MasterOrSlave != AITriggerMasterOrSlave.NonSync)
{
lock (TClockDevice.Lock)
{
if (TClockDevice.SyncDevices == null)
{
TClockDevice.SyncDevices = new List <NIScope>();
}
TClockDevice.SyncDevices.Add(scopeSession);
}
}
//如果是主卡，则将所有的 SynchronizableDevices 实例化出来，这样写也就决定了只能有一个 Master（ NI 机箱可级联支持双 Master）
//这一行必须是在所有需要同步的卡 scopeSession 设置完毕之后
if (triggerConfiguration.MasterOrSlave == AITriggerMasterOrSlave.Master)
{
TClockDevice.IsMasterReady = false;
TClockDevice.IsSlaveCanAddIntoTDevice = true;
//因为主卡可能会和从卡同时被 Arm，因此先等待所有从卡设备加入 TClockDevice
Thread.Sleep(1000);
TClockDevice.IsSlaveCanAddIntoTDevice = false;
ITClockSynchronizableDevice[] scopeSynchronizableDevices = new ITClockSynchronizableDevice[TClockDevice.SyncDevices.Count];
for (int i = 0; i < TClockDevice.SyncDevices.Count; i++)
{
scopeSynchronizableDevices[i] = TClockDevice.SyncDevices[i];
}
tClockSession = new TClock(scopeSynchronizableDevices);
tClockSession.ConfigureForHomogeneousTriggers();
tClockSession.Synchronize();
}
}
