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 RawPixelIndexerTest()
{
I2cTestDevice i2cDevice = new I2cTestDevice();
Amg88xx sensor = new Amg88xx(i2cDevice);
// using a simple linear sequence of numbers as reference image:
// 0 to 0x1f8 (504d)
Int16[] referenceImage = new Int16[Amg88xx.PixelCount];
for (int n = 0; n < Amg88xx.PixelCount; n++)
{
referenceImage[n] = (short)(n * 8);
// enqueue lower byte (TLxx)
i2cDevice.DataToRead.Enqueue((byte)(referenceImage[n] & 0xff));
// enqueue higher byte (THxx)
i2cDevice.DataToRead.Enqueue((byte)(referenceImage[n] >> 8));
}
// 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);
for (int n = 0; n < Amg88xx.PixelCount; n++)
{
Int16 rawPixel = sensor[n];
Assert.Equal(referenceImage[n], rawPixel);
}
}
private double[] ReadHeatMap()
{
_amg88xx.ReadImage();
var temperatureImage = _amg88xx.TemperatureImage;
return(ConvertTemperatureImage(temperatureImage));
}