public void PinFunctionTimeoutTest()
{
Console.WriteLine("Starting pin functions timeout functionality test...");
/* Timer for measuring elapsed time */
Stopwatch timer = new Stopwatch();
for (uint timeout = 100; timeout <= 800; timeout += 100)
{
Console.WriteLine("Testing timeout of " + timeout.ToString() + "ms...");
FX3.SetPin(FX3.DIO4, 1);
/* Pulse wait */
timer.Restart();
FX3.PulseWait(FX3.DIO3, 0, 0, timeout);
timer.Stop();
Console.WriteLine("Pulse wait time: " + timer.ElapsedMilliseconds.ToString() + "ms");
Assert.GreaterOrEqual(timer.ElapsedMilliseconds, timeout, "ERROR: Function returned in less than timeout period");
Assert.LessOrEqual(timer.ElapsedMilliseconds, timeout + 100, "ERROR: Function returned in over 100ms more than timeout period");
CheckFirmwareResponsiveness();
/* Measure pin freq */
timer.Restart();
Assert.AreEqual(double.PositiveInfinity, FX3.MeasurePinFreq(FX3.DIO4, 0, timeout, 1), "ERROR: Invalid pin freq. Expected timeout");
timer.Stop();
Console.WriteLine("Measure pin freq time: " + timer.ElapsedMilliseconds.ToString() + "ms");
Assert.GreaterOrEqual(timer.ElapsedMilliseconds, timeout, "ERROR: Function returned in less than timeout period");
Assert.LessOrEqual(timer.ElapsedMilliseconds, timeout + 100, "ERROR: Function returned in over 100ms more than timeout period");
CheckFirmwareResponsiveness();
/* Measure pin delay */
timer.Restart();
FX3.MeasurePinDelay(FX3.DIO4, 0, FX3.DIO1, timeout);
timer.Stop();
Console.WriteLine("Measure pin delay time: " + timer.ElapsedMilliseconds.ToString() + "ms");
Assert.GreaterOrEqual(timer.ElapsedMilliseconds, timeout, "ERROR: Function returned in less than timeout period");
Assert.LessOrEqual(timer.ElapsedMilliseconds, timeout + 100, "ERROR: Function returned in over 100ms more than timeout period");
CheckFirmwareResponsiveness();
/* Measure busy pulse */
timer.Restart();
Assert.AreEqual(double.PositiveInfinity, FX3.MeasureBusyPulse(FX3.DIO4, 1, 1, FX3.DIO1, 0, timeout), "ERROR: Expected measure busy pulse to return timeout");
timer.Stop();
Console.WriteLine("Measure busy pulse time: " + timer.ElapsedMilliseconds.ToString() + "ms");
Assert.GreaterOrEqual(timer.ElapsedMilliseconds, timeout, "ERROR: Function returned in less than timeout period");
Assert.LessOrEqual(timer.ElapsedMilliseconds, timeout + 100, "ERROR: Function returned in over 100ms more than timeout period");
CheckFirmwareResponsiveness();
}
}
public void PWMGenerationTest()
{
Console.WriteLine("Starting PWM generation test...");
double posWidth, negWidth;
double measuredFreq, measuredDutyCycle;
for (double freq = 20; freq < 40000; freq *= 1.2)
{
for (double dutyCycle = 0.02; dutyCycle <= 0.98; dutyCycle += 0.02)
{
Console.WriteLine("Starting PWM with freq " + freq.ToString("f2") + "Hz, " + dutyCycle.ToString("f2") + " duty cycle...");
FX3.StartPWM(freq, dutyCycle, FX3.DIO3);
posWidth = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO4, 1, 1000);
negWidth = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO4, 0, 1000);
measuredFreq = 1000 / (posWidth + negWidth);
measuredDutyCycle = posWidth / (posWidth + negWidth);
Console.WriteLine("Measured freq: " + measuredFreq.ToString("f2") + "Hz, measured duty cycle: " + measuredDutyCycle.ToString("f2"));
Assert.AreEqual(freq, measuredFreq, 0.01 * freq, "ERROR: Invalid freq measured");
Assert.AreEqual(dutyCycle, measuredDutyCycle, 0.01, "ERROR: Invalid duty cycle measured");
}
}
}
public void MeasureBusyPulseTest()
{
double period;
double pwmPeriod = 1000;
double measuredPeriodPin, measuredPeriodSpi;
List <byte> SpiData = new List <byte>();
SpiData.Add(0);
SpiData.Add(0);
/* Test small period measurements (0.5us - 500us) */
for (period = 0.5; period < 500; period += 0.5)
{
FX3.StartPWM(1000, (pwmPeriod - period) / pwmPeriod, FX3.DIO4);
measuredPeriodPin = 1000 * FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 0, 100);
measuredPeriodSpi = 1000 * FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 0, 100);
Console.WriteLine("Negative PWM Period: " + period.ToString() + "us.\t Error: " + (period - measuredPeriodPin).ToString() + "us");
Console.WriteLine("Measured period: " + measuredPeriodPin.ToString() + "us");
/* Assert with 0.2us margin of error */
Assert.AreEqual(period, measuredPeriodSpi, 0.2, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, 0.2, "ERROR: Invalid period measured");
/* Measure positive period */
FX3.StartPWM(1000, period / pwmPeriod, FX3.DIO4);
measuredPeriodPin = 1000 * FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 1, 100);
measuredPeriodSpi = 1000 * FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 1, 100);
Console.WriteLine("Positive PWM Period: " + period.ToString() + "us.\t Error: " + (period - measuredPeriodPin).ToString() + "us");
Console.WriteLine("Measured period: " + measuredPeriodPin.ToString() + "us");
/* Assert with 0.2us margin of error */
Assert.AreEqual(period, measuredPeriodSpi, 0.2, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, 0.2, "ERROR: Invalid period measured");
}
/* Test large period measurements (2ms - 50ms) */
pwmPeriod = 100;
for (period = 2; period < 50; period += 2)
{
FX3.StartPWM(10, (pwmPeriod - period) / pwmPeriod, FX3.DIO4);
measuredPeriodPin = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 0, 200);
measuredPeriodSpi = FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 0, 200);
Console.WriteLine("Negative PWM Period: " + period.ToString() + "ms.\t Error: " + (period - measuredPeriodPin).ToString() + "ms");
/* Assert with 1% margin of error */
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
/* Measure positive period */
FX3.StartPWM(10, period / pwmPeriod, FX3.DIO4);
measuredPeriodPin = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 1, 200);
measuredPeriodSpi = FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 1, 200);
Console.WriteLine("Positive PWM Period: " + period.ToString() + "ms.\t Error: " + (period - measuredPeriodPin).ToString() + "ms");
/* Assert with 1% margin of error */
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
}
/* Test very large period measurements (1 sec) */
Console.WriteLine("Testing 1 second period signal measurements...");
period = 1000;
FX3.StartPWM(0.5, 0.5, FX3.DIO4);
measuredPeriodPin = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 0, 5000);
measuredPeriodSpi = FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 0, 5000);
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
measuredPeriodPin = FX3.MeasureBusyPulse(FX3.DIO2, 1, 0, FX3.DIO3, 1, 5000);
measuredPeriodSpi = FX3.MeasureBusyPulse(SpiData.ToArray(), FX3.DIO3, 1, 5000);
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
Assert.AreEqual(period, measuredPeriodSpi, period * 0.1, "ERROR: Invalid period measured");
}