public void ADcmXLStreamCancelTest()
{
Console.WriteLine("Starting ADcmXL stream cancel test...");
long firstCount;
FX3.DrActive = true;
FX3.SensorType = DeviceType.ADcmXL;
FX3.PartType = DUTType.ADcmXL3021;
FX3.DrPin = FX3.DIO3;
/* Start 6KHz DR signal on DIO4 */
FX3.StartPWM(6000, 0.1, FX3.DIO4);
for (int trial = 0; trial < 4; trial++)
{
Console.WriteLine("Starting trial " + trial.ToString());
/* Start stream */
FX3.StartRealTimeStreaming(1000000);
firstCount = FX3.GetNumBuffersRead;
System.Threading.Thread.Sleep(50);
Assert.Greater(FX3.GetNumBuffersRead, firstCount, "ERROR: Expected to have read buffers");
/* Cancel stream (stop stream) */
FX3.StopStream();
System.Threading.Thread.Sleep(50);
/* Check SPI functionality */
TestSpiFunctionality();
/* Start stream */
FX3.StartRealTimeStreaming(1000000);
firstCount = FX3.GetNumBuffersRead;
System.Threading.Thread.Sleep(50);
Assert.Greater(FX3.GetNumBuffersRead, firstCount, "ERROR: Expected to have read buffers");
/* Cancel stream (cancel stream) */
FX3.CancelStreamAsync();
System.Threading.Thread.Sleep(50);
/* Check SPI functionality */
TestSpiFunctionality();
}
}
public void ADcmXLRealTimeStreamTest()
{
Console.WriteLine("Starting ADcmXL data stream test...");
double expectedTime;
double realTime;
double baseTime;
uint numBuffers = 13600;
Stopwatch timer = new Stopwatch();
FX3.DrActive = true;
FX3.SensorType = DeviceType.ADcmXL;
FX3.PartType = DUTType.ADcmXL3021;
FX3.DrPin = FX3.DIO3;
/* Start 6.8KHz, 80% duty cycle DR signal on DIO4 */
FX3.StartPWM(6800, 0.8, FX3.DIO4);
Console.WriteLine("Measuring base stream time...");
baseTime = 0;
for (int trial = 0; trial < 5; trial++)
{
timer.Restart();
FX3.StartRealTimeStreaming(1000);
System.Threading.Thread.Sleep(5);
FX3.WaitForStreamCompletion(1000);
baseTime += (timer.ElapsedMilliseconds - (1000.0 / 6.8));
}
baseTime /= 5;
Console.WriteLine("Base stream overhead time: " + baseTime.ToString() + "ms");
for (int trial = 0; trial < 4; trial++)
{
Console.WriteLine("Starting trial " + trial.ToString());
/* Start stream */
timer.Restart();
FX3.StartRealTimeStreaming(numBuffers);
System.Threading.Thread.Sleep(100);
FX3.WaitForStreamCompletion((int)(numBuffers / 6.0) + 1000);
timer.Stop();
Assert.AreEqual(FX3.GetNumBuffersRead, numBuffers, "ERROR: Invalid number of buffers read");
realTime = timer.ElapsedMilliseconds;
/* Take off a base time */
realTime -= baseTime;
expectedTime = numBuffers / 6.8;
Console.WriteLine("Expected time: " + expectedTime.ToString() + "ms, Real time: " + realTime.ToString() + "ms");
Assert.AreEqual(expectedTime, realTime, 0.01 * expectedTime, "ERROR: Invalid stream time");
/* Check SPI functionality */
FX3.WordLength = 16;
TestSpiFunctionality();
}
Console.WriteLine("Verifying that when the DR edge is missed the stream waits until the following edge to start...");
FX3.SclkFrequency = 8000000;
timer.Restart();
FX3.StartRealTimeStreaming(numBuffers);
System.Threading.Thread.Sleep(100);
FX3.WaitForStreamCompletion((int)(2 * numBuffers / 6.0) + 1000);
timer.Stop();
Assert.AreEqual(FX3.GetNumBuffersRead, numBuffers, "ERROR: Invalid number of buffers read");
realTime = timer.ElapsedMilliseconds;
/* Take off a base time */
realTime -= baseTime;
/* Twice the time because we read every other data ready */
expectedTime = 2 * numBuffers / 6.8;
Console.WriteLine("Expected time: " + expectedTime.ToString() + "ms, Real time: " + realTime.ToString() + "ms");
Assert.AreEqual(expectedTime, realTime, 0.01 * expectedTime, "ERROR: Invalid stream time");
}
