void CheckBurstBuffers(byte[] data, uint numBuffers)
{
Assert.AreEqual(numBuffers, FX3.GetNumBuffersRead, "ERROR: Number of buffers read parameter is incorrect");
ushort[] buf;
buf = FX3.GetBuffer();
while (buf != null)
{
Assert.AreEqual(data.Count(), buf.Count() * 2, 1, "ERROR: Invalid buffer size");
int index = 0;
for (int i = 0; i < buf.Count(); i++)
{
Assert.AreEqual(data[index], buf[i] >> 8, "ERROR: Invalid burst data echoed");
Assert.AreEqual(data[index + 1], buf[i] & 0xFF, "ERROR: Invalid burst data echoed");
index += 2;
}
buf = FX3.GetBuffer();
}
}
public void BurstSpiTest()
{
Console.WriteLine("Starting SPI burst read test...");
List <byte> BurstTxData = new List <byte>();
ushort[] BurstData;
int index;
RegMapClasses.RegClass triggerReg = new RegMapClasses.RegClass();
triggerReg.NumBytes = 2;
triggerReg.Address = 0x12;
FX3.DrActive = false;
for (int byteCount = 4; byteCount < 400; byteCount += 2)
{
Console.WriteLine("Testing burst read of " + byteCount.ToString() + " bytes...");
FX3.BurstByteCount = byteCount;
Assert.AreEqual(byteCount, FX3.BurstByteCount, "ERROR; Byte count not applied correctly");
Assert.AreEqual((byteCount - 2) / 2, FX3.WordCount, "ERROR: FX3 burst word count not set correctly");
/* Burst trigger reg */
FX3.TriggerReg = triggerReg;
/* strip header */
Console.WriteLine("Testing burst read with trigger reg and header stripped...");
FX3.StripBurstTriggerWord = true;
FX3.SetupBurstMode();
FX3.StartBurstStream(1, FX3.BurstMOSIData);
FX3.WaitForStreamCompletion(50);
BurstData = FX3.GetBuffer();
Assert.AreEqual((byteCount / 2) - 1, BurstData.Count(), "ERROR: Invalid burst data count");
for (int i = 0; i < BurstData.Count(); i++)
{
Assert.AreEqual(0, BurstData[i], "ERROR: Expected all burst data to be 0");
}
/* No strip header */
Console.WriteLine("Testing burst read with trigger reg and header not stripped...");
FX3.StripBurstTriggerWord = false;
FX3.SetupBurstMode();
FX3.StartBurstStream(1, FX3.BurstMOSIData);
FX3.WaitForStreamCompletion(50);
BurstData = FX3.GetBuffer();
Assert.AreEqual((byteCount / 2), BurstData.Count(), "ERROR: Invalid burst data count");
Assert.AreEqual(0x1200, BurstData[0], "ERROR: Invalid burst data echoed");
for (int i = 1; i < BurstData.Count(); i++)
{
Assert.AreEqual(0, BurstData[i], "ERROR: Expected remainder of burst data to be 0");
}
/* Burst transmit data */
BurstTxData.Clear();
for (int i = 0; i < byteCount; i++)
{
BurstTxData.Add((byte)(i & 0xFFU));
}
FX3.BurstMOSIData = BurstTxData.ToArray();
for (int i = 0; i < BurstTxData.Count; i++)
{
Assert.AreEqual(BurstTxData[i], FX3.BurstMOSIData[i], "ERROR: Burst MOSI data not applied correctly");
}
/* strip header */
Console.WriteLine("Testing burst read with MOSI byte array and header stripped...");
FX3.StripBurstTriggerWord = true;
FX3.SetupBurstMode();
FX3.StartBurstStream(1, FX3.BurstMOSIData);
FX3.WaitForStreamCompletion(50);
BurstData = FX3.GetBuffer();
Assert.AreEqual((byteCount / 2) - 1, BurstData.Count(), "ERROR: Invalid burst data count");
index = 2;
for (int i = 0; i < BurstData.Count(); i++)
{
Assert.AreEqual(BurstTxData[index], BurstData[i] >> 8, "ERROR: Invalid burst data echoed");
Assert.AreEqual(BurstTxData[index + 1], BurstData[i] & 0xFF, "ERROR: Invalid burst data echoed");
index += 2;
}
/* No strip header */
Console.WriteLine("Testing burst read with MOSI byte array and header not stripped...");
FX3.StripBurstTriggerWord = false;
FX3.SetupBurstMode();
FX3.StartBurstStream(1, FX3.BurstMOSIData);
FX3.WaitForStreamCompletion(50);
BurstData = FX3.GetBuffer();
Assert.AreEqual((byteCount / 2), BurstData.Count(), "ERROR: Invalid burst data count");
index = 0;
for (int i = 0; i < BurstData.Count(); i++)
{
Assert.AreEqual(BurstTxData[index], BurstData[i] >> 8, "ERROR: Invalid burst data echoed");
Assert.AreEqual(BurstTxData[index + 1], BurstData[i] & 0xFF, "ERROR: Invalid burst data echoed");
index += 2;
}
}
Console.WriteLine("Testing Dr Active triggering for burst...");
FX3.DrPin = FX3.DIO3;
FX3.StartPWM(100, 0.5, FX3.DIO4);
FX3.BurstByteCount = 64;
BurstTxData.Clear();
for (int i = 0; i < 64; i++)
{
BurstTxData.Add((byte)(i & 0xFFU));
}
FX3.BurstMOSIData = BurstTxData.ToArray();
FX3.StripBurstTriggerWord = false;
FX3.SetupBurstMode();
FX3.DrActive = true;
double expectedTime;
long drActiveTime, baseTime;
Stopwatch timer = new Stopwatch();
for (uint numBuffers = 100; numBuffers <= 300; numBuffers += 100)
{
Console.WriteLine("Capturing " + numBuffers.ToString() + " buffers with DrActive set to false...");
FX3.DrActive = false;
FX3.StartBurstStream(numBuffers, FX3.BurstMOSIData);
timer.Restart();
while (FX3.GetNumBuffersRead < numBuffers)
{
System.Threading.Thread.Sleep(1);
}
baseTime = timer.ElapsedMilliseconds;
Console.WriteLine("Stream time: " + baseTime.ToString() + "ms");
CheckBurstBuffers(BurstTxData.ToArray(), numBuffers);
Console.WriteLine("Capturing " + numBuffers.ToString() + " buffers with DrActive set to true...");
expectedTime = 10 * numBuffers; //100Hz DR
FX3.DrActive = true;
FX3.StartBurstStream(numBuffers, FX3.BurstMOSIData);
timer.Restart();
while (FX3.GetNumBuffersRead < numBuffers)
{
System.Threading.Thread.Sleep(1);
}
drActiveTime = timer.ElapsedMilliseconds;
Console.WriteLine("Stream time: " + drActiveTime.ToString() + "ms");
Assert.AreEqual(expectedTime, drActiveTime, 0.25 * expectedTime, "ERROR: Invalid stream time");
CheckBurstBuffers(BurstTxData.ToArray(), numBuffers);
Assert.Less(baseTime, drActiveTime, "ERROR: Base stream time greater than DrActive stream time");
}
}