public void TemperatureImageTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
Temperature[,] referenceImage = new Temperature[Amg88xx.Width, Amg88xx.Height];
Random rnd = new Random();
for (int y = 0; y < Amg88xx.Height; y++)
{
for (int x = 0; x < Amg88xx.Width; x++)
{
referenceImage[x, y] = Temperature.FromDegreesCelsius(rnd.Next(-80, 321) * PixelTemperatureResolution);
(byte tl, byte th) = Amg88xxUtils.ConvertFromTemperature(referenceImage[x, y]);
i2cDevice.DataToRead.Enqueue(tl);
i2cDevice.DataToRead.Enqueue(th);
}
}
// read image from sensor
sensor.ReadImage();
// expectation: one write access to register T01L (lower byte of first pixel) to trigger readout
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.T01L, i2cDevice.DataWritten.Dequeue());
// expectation: all pixels have been read, so nothing is remaining
Assert.Empty(i2cDevice.DataToRead);
Assert.Equal(referenceImage, sensor.TemperatureImage);
}
public void FlagResetTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.ResetAllFlags();
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.RST, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)ResetType.Flag, i2cDevice.DataWritten.Dequeue());
}
public void OperatingModeSetTest(OperatingMode targetOperatingMode, byte expectedMode)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.OperatingMode = targetOperatingMode;
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.PCLT, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedMode, i2cDevice.DataWritten.Dequeue());
}
public void ClearAllFlagsTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.ClearAllFlags();
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.SCLR, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)(1 << (byte)StatusClearBit.OVFCLR) | (1 << (byte)StatusClearBit.OVFTHCLR) | (1 << (byte)StatusClearBit.INTCLR), i2cDevice.DataWritten.Dequeue());
}
public void ClearInterruptTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.ClearInterrupt();
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.SCLR, i2cDevice.DataWritten.Dequeue());
Assert.Equal(1 << (byte)StatusClearBit.INTCLR, i2cDevice.DataWritten.Dequeue());
}
public void ClearThermistorOverflowTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.ClearThermistorOverflow();
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.SCLR, i2cDevice.DataWritten.Dequeue());
Assert.Equal(1 << (byte)StatusClearBit.OVFTHCLR, i2cDevice.DataWritten.Dequeue());
}
public void OperatingModeGetTest(byte registerContent, OperatingMode expectedOperatingMode)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(registerContent);
var actualOperatingMode = sensor.OperatingMode;
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.PCLT, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedOperatingMode, actualOperatingMode);
}
public void FrameRateGetTest(byte registerContent, FrameRate expectedFrameRate)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(registerContent);
var actualFrameRate = sensor.FrameRate;
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.FPSC, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedFrameRate, actualFrameRate);
}
public void HasThermistorOverflowTest(byte statusRegisterContent, bool thermistorOverflow)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(statusRegisterContent);
bool status = sensor.HasThermistorOverflow();
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.STAT, i2cDevice.DataWritten.Dequeue());
Assert.Equal(thermistorOverflow, status);
}
public void UseMovingAverageModeGetTest(byte registerContent, bool expectedState)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(registerContent);
bool actualState = sensor.UseMovingAverageMode;
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.AVE, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedState, actualState);
}
public void HasInterruptTest(byte statusRegisterContent, bool interrupt)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(statusRegisterContent);
bool status = sensor.HasInterrupt();
Assert.Single(i2cDevice.DataWritten);
Assert.Equal((byte)Register.STAT, i2cDevice.DataWritten.Dequeue());
Assert.Equal(interrupt, status);
}
public void InterruptPinEnabledGetTest(bool expectedState, byte registerValue)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(registerValue);
bool actualState = sensor.InterruptPinEnabled;
Assert.Single(i2cDevice.DataWritten);
// register address is expected two times: once for reading the current register value and once for writing the new one
Assert.Equal((byte)Register.INTC, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedState, actualState);
}
public void SensorTemperatureGetTest(byte th, byte tl, double expectedTemperature)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
// target temperature is 25°C which is equivalent to 0x190
i2cDevice.DataToRead.Enqueue(tl);
i2cDevice.DataToRead.Enqueue(th);
Assert.Equal(expectedTemperature, sensor.SensorTemperature.DegreesCelsius);
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.TTHL, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)Register.TTHH, i2cDevice.DataWritten.Dequeue());
}
public void InterruptPinEnabledSetTest(byte initialRegisterContent, bool targetState, byte expectedRegisterContent)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(initialRegisterContent);
sensor.InterruptPinEnabled = targetState;
Assert.Equal(3, i2cDevice.DataWritten.Count);
// register address is expected two times: once for reading the current register value and once for writing the new one
Assert.Equal((byte)Register.INTC, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)Register.INTC, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedRegisterContent, i2cDevice.DataWritten.Dequeue());
}
public void UseMovingAverageModeSetTest(bool targetState, byte initialRegisterContent, byte expectedRegisterContent)
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
// bit 5: if set, moving average is on
i2cDevice.DataToRead.Enqueue(initialRegisterContent);
sensor.UseMovingAverageMode = targetState;
Assert.Equal(3, i2cDevice.DataWritten.Count);
// register address is expected two times: once for reading the current register value and once for writing the new one
Assert.Equal((byte)Register.AVE, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)Register.AVE, i2cDevice.DataWritten.Dequeue());
Assert.Equal(expectedRegisterContent, i2cDevice.DataWritten.Dequeue());
}
public void InterruptHysteresisLevelSetTest()
{
Temperature expectedTemperature = Temperature.FromDegreesCelsius(125);
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
sensor.InterruptHysteresis = expectedTemperature;
Assert.Equal(4, i2cDevice.DataWritten.Count);
(byte refTl, byte refTh) = Amg88xxUtils.ConvertFromTemperature(expectedTemperature);
Assert.Equal((byte)Register.INTSL, i2cDevice.DataWritten.Dequeue());
Assert.Equal(refTl, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)Register.INTSH, i2cDevice.DataWritten.Dequeue());
Assert.Equal(refTh, i2cDevice.DataWritten.Dequeue());
}
public void InterruptHysteresisLevelGetTest()
{
// expected temeperature: 72.75°C
// two's complement representation:
byte expectedTl = 0x23;
byte expectedTh = 0x01;
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
i2cDevice.DataToRead.Enqueue(expectedTl);
i2cDevice.DataToRead.Enqueue(expectedTh);
Temperature actualTemperature = sensor.InterruptHysteresis;
Assert.Equal(2, i2cDevice.DataWritten.Count);
Assert.Equal((byte)Register.INTSL, i2cDevice.DataWritten.Dequeue());
Assert.Equal((byte)Register.INTSH, i2cDevice.DataWritten.Dequeue());
Assert.Equal(Amg88xxUtils.ConvertToTemperature(expectedTl, expectedTh).DegreesCelsius, actualTemperature.DegreesCelsius);
}