private void SetPinResistorSetting(FX3PinResistorSetting setting)
{
List <IPinObject> pins = new List <IPinObject>();
FX3.BitBangSpiConfig = new BitBangSpiConfig(true);
pins.Add(FX3.DIO1);
pins.Add(FX3.DIO2);
pins.Add(FX3.DIO3);
pins.Add(FX3.DIO4);
pins.Add(FX3.FX3_GPIO1);
pins.Add(FX3.FX3_GPIO2);
pins.Add(FX3.FX3_GPIO3);
pins.Add(FX3.FX3_GPIO4);
pins.Add(FX3.BitBangSpiConfig.CS);
pins.Add(FX3.BitBangSpiConfig.SCLK);
pins.Add(FX3.BitBangSpiConfig.MISO);
pins.Add(FX3.BitBangSpiConfig.MOSI);
pins.Add(FX3.ResetPin);
//uart
pins.Add(new FX3PinObject(48));
foreach (IPinObject pin in pins)
{
/* Read each pin to set as input */
FX3.ReadPin(pin);
FX3.SetPinResistorSetting(pin, setting);
}
}
public void USBTimingTest()
{
Console.WriteLine("Starting USB command execution timing test...");
const int NUM_TRIALS = 5000;
/* Timer for measuring elapsed time */
Stopwatch timer = new Stopwatch();
//Set pin
timer.Restart();
for (int trial = 0; trial < NUM_TRIALS; trial++)
{
FX3.SetPin(FX3.DIO1, 0);
}
timer.Stop();
Console.WriteLine("Average SetPin execution time: " + ((timer.ElapsedMilliseconds * 1000) / NUM_TRIALS).ToString() + "us");
timer.Restart();
for (int trial = 0; trial < NUM_TRIALS; trial++)
{
FX3.ReadPin(FX3.DIO1);
}
timer.Stop();
Console.WriteLine("Average ReadPin execution time: " + ((timer.ElapsedMilliseconds * 1000) / NUM_TRIALS).ToString() + "us");
timer.Restart();
for (int trial = 0; trial < NUM_TRIALS; trial++)
{
FX3.StallTime = 10;
}
timer.Stop();
Console.WriteLine("Average SPI parameter configuration time: " + ((timer.ElapsedMilliseconds * 1000) / NUM_TRIALS).ToString() + "us");
}
public void BitBangSpiModeTest()
{
Console.WriteLine("Starting bit bang SPI mode test...");
byte[] MISO;
uint mode;
List <byte> MOSI = new List <byte>();
for (int i = 0; i < 1024; i++)
{
MOSI.Add((byte)(i & 0x7F));
}
FX3.BitBangSpiConfig = new BitBangSpiConfig(true);
FX3.BitBangSpiConfig.SCLK = (FX3PinObject)FX3.DIO3;
FX3.ReadPin(FX3.DIO3);
FX3.ReadPin(FX3.DIO3);
Random rnd = new Random();
for (int trial = 0; trial < 64; trial++)
{
mode = (uint)(rnd.NextDouble() * 4);
Console.WriteLine("Testing bit-bang SPI mode " + mode.ToString());
FX3.BitBangSpiConfig.CPHA = ((mode & 0x1) != 0);
FX3.BitBangSpiConfig.CPOL = ((mode & 0x2) != 0);
for (uint len = 8; len < 64; len += 8)
{
MISO = FX3.BitBangSpi(len, 1, MOSI.ToArray(), 1000);
Assert.AreEqual(len >> 3, MISO.Count(), "ERROR: Invalid data count");
for (int i = 0; i < MISO.Count(); i++)
{
Assert.AreEqual(MOSI[i], MISO[i], "ERROR: Invalid echo data");
}
}
/* Check SCLK pin level after transfer */
if (FX3.BitBangSpiConfig.CPOL)
{
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO4), "ERROR: Expected SCLK to be idle high");
}
else
{
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO4), "ERROR: Expected SCLK to be idle low");
}
}
}
public void SetReadPinTest()
{
Console.WriteLine("Starting pin read/write test...");
const int NUM_TRIALS = 100;
Console.WriteLine("Testing " + NUM_TRIALS.ToString() + " pin set/read trials");
for (int trial = 0; trial < NUM_TRIALS; trial++)
{
Console.WriteLine("Starting trial " + trial.ToString());
FX3.SetPin(FX3.DIO3, 1);
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO4), "ERROR: Invalid pin value read on DIO4");
FX3.SetPin(FX3.DIO3, 0);
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO4), "ERROR: Invalid pin value read on DIO4");
FX3.SetPin(FX3.DIO4, 1);
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO3), "ERROR: Invalid pin value read on DIO3");
FX3.SetPin(FX3.DIO4, 0);
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO3), "ERROR: Invalid pin value read on DIO3");
}
}
public void ResistorConfigurationTest()
{
Console.WriteLine("Starting GPIO resistor configuration test...");
for (int trial = 0; trial < 10; trial++)
{
Console.WriteLine("Enabling internal pull up on all user accessible GPIO...");
SetPinResistorSetting(FX3PinResistorSetting.PullUp);
System.Threading.Thread.Sleep(50);
Console.WriteLine("Checking input stage values...");
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO1), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO2), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO3), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.DIO4), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.FX3_GPIO1), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.FX3_GPIO2), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.FX3_GPIO3), "ERROR: Expected pin to be high");
Assert.AreEqual(1, FX3.ReadPin(FX3.FX3_GPIO4), "ERROR: Expected pin to be high");
Console.WriteLine("Enabling internal pull down on all user accessible GPIO...");
SetPinResistorSetting(FX3PinResistorSetting.PullDown);
System.Threading.Thread.Sleep(50);
Console.WriteLine("Checking input stage values...");
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO1), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO2), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO3), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.DIO4), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.FX3_GPIO1), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.FX3_GPIO2), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.FX3_GPIO3), "ERROR: Expected pin to be low");
Assert.AreEqual(0, FX3.ReadPin(FX3.FX3_GPIO4), "ERROR: Expected pin to be low");
Console.WriteLine("Disabling resistors...");
SetPinResistorSetting(FX3PinResistorSetting.None);
System.Threading.Thread.Sleep(50);
}
}