/// <summary>
/// Write a HIGH or a LOW value to a digital pin.
/// </summary>
/// <param name="pin">The pin to write.</param>
/// <param name="mode">The write mode value.</param>
public void DigitalWrite(int pin, DigitalMode mode)
{
Debug.WriteLine(string.Format("Sending digital write {0} to pin {1}", mode.ToString(), pin));
SerialConnector.Send(new Command(CommandMap.DigitalWrite, pin, (int)mode));
}
static void Main(string[] args)
{
#region Station Configuration
string sgName = "VST2";
string digitalName = "PXIe-6570";
DigitalMode desiredMode = DigitalMode.Digital_Enable;
//To calculate this delay, use the TDR feature of the Digital Pattern Editor (DPE)
//In the DPE, navigate to Instruments » TDR...
double PFI0CableDelay_s = 11.4e-9;
#endregion
#region SG Configuration
NIRfsg rfsgSession = new NIRfsg(sgName, false, false);
InstrumentConfiguration instrConfig = new InstrumentConfiguration
{
ReferenceClockSource = RfsgFrequencyReferenceSource.PxiClock,
CarrierFrequency_Hz = 2.402e9,
DutAverageInputPower_dBm = 0,
ShareLOSGToSA = false,
};
ConfigureInstrument(rfsgSession, instrConfig);
string waveformPath = Path.GetFullPath(@"TDMS Files\11AC_MCS8_40M.tdms");
Waveform wave = LoadWaveformFromTDMS(waveformPath, "wave");
DownloadWaveform(rfsgSession, wave);
WaveformTimingConfiguration waveTiming = new WaveformTimingConfiguration
{
DutyCycle_Percent = 20,
PreBurstTime_s = 2000e-9,
PostBurstTime_s = 500e-9,
BurstStartTriggerExport = "PXI_Trig0"
};
PAENConfiguration paenConfig = new PAENConfiguration
{
PAEnableMode = PAENMode.Dynamic,
PAEnableTriggerExportTerminal = "PFI0",
PAEnableTriggerMode = RfsgMarkerEventOutputBehaviour.Toggle,
};
switch (desiredMode)
{
case DigitalMode.RFFE_MIPI:
//Calculate the command length by multiplying the number of vector cycles (18 for Reg0Write)
//by the clock rate (currently 52 MHz)
paenConfig.CommandEnableTime_s = 18 * (1 / 52e6);
paenConfig.CommandDisableTime_s = 18 * (1 / 52e6);
break;
case DigitalMode.Digital_Enable:
//For the digital enable case, the command time can be considered to be 0 since the digital
//line is simply being toggled high/low
paenConfig.CommandDisableTime_s = 0;
paenConfig.CommandEnableTime_s = 0;
break;
}
//Until NI-DIGITAL 19.0 is released, the triggering mechanism used is to trigger using the PFI line
//and detecting the change with a match opcode. There are a total of 830 cycles of the instrument required
//before the command is sent from the pattern. Hence, an 830ns delay is added to the command time to account
//for this.
paenConfig.CommandEnableTime_s += 830e-9;
paenConfig.CommandDisableTime_s += 830e-9;
ConfigureBurstedGeneration(rfsgSession, wave, waveTiming, paenConfig, out _, out _);
#endregion
#region NI Digital Config
NIDigital digital = new NIDigital(digitalName, false, false);
ProjectFiles projectFiles = Digital.Utilities.SearchForProjectFiles(Path.GetFullPath(@"Dynamic Digital Control Project"), true);
LoadProjectFiles(digital, projectFiles);
ApplyPinTDROffset(digital, "PFI0", PFI0CableDelay_s);
//Select the appropriate pattern based on the desired control mechanism
switch (desiredMode)
{
case DigitalMode.Digital_Enable:
digital.PatternControl.BurstPattern("", "Dynamic_Digital_Enable", true, false, TimeSpan.FromSeconds(10));
break;
case DigitalMode.RFFE_MIPI:
digital.PatternControl.BurstPattern("", "Dynamic_RFFE_Control", true, false, TimeSpan.FromSeconds(10));
break;
}
#endregion
rfsgSession.Initiate();
Console.WriteLine("Generation on the signal generator and digital pattern instrument has begun. Press any key to abort generation and exit the program.");
Console.ReadKey();
AbortGeneration(rfsgSession);
digital.PatternControl.Abort();
DisconnectAndClose(digital);
rfsgSession.Close();
}
