public void ConversionRoundTrip()
{
VolumeConcentration decimalfraction = VolumeConcentration.FromDecimalFractions(1);
AssertEx.EqualTolerance(1, VolumeConcentration.FromCentilitersPerLiter(decimalfraction.CentilitersPerLiter).DecimalFractions, CentilitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromCentilitersPerMililiter(decimalfraction.CentilitersPerMililiter).DecimalFractions, CentilitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromDecilitersPerLiter(decimalfraction.DecilitersPerLiter).DecimalFractions, DecilitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromDecilitersPerMililiter(decimalfraction.DecilitersPerMililiter).DecimalFractions, DecilitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromDecimalFractions(decimalfraction.DecimalFractions).DecimalFractions, DecimalFractionsTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromLitersPerLiter(decimalfraction.LitersPerLiter).DecimalFractions, LitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromLitersPerMililiter(decimalfraction.LitersPerMililiter).DecimalFractions, LitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromMicrolitersPerLiter(decimalfraction.MicrolitersPerLiter).DecimalFractions, MicrolitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromMicrolitersPerMililiter(decimalfraction.MicrolitersPerMililiter).DecimalFractions, MicrolitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromMillilitersPerLiter(decimalfraction.MillilitersPerLiter).DecimalFractions, MillilitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromMillilitersPerMililiter(decimalfraction.MillilitersPerMililiter).DecimalFractions, MillilitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromNanolitersPerLiter(decimalfraction.NanolitersPerLiter).DecimalFractions, NanolitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromNanolitersPerMililiter(decimalfraction.NanolitersPerMililiter).DecimalFractions, NanolitersPerMililiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPartsPerBillion(decimalfraction.PartsPerBillion).DecimalFractions, PartsPerBillionTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPartsPerMillion(decimalfraction.PartsPerMillion).DecimalFractions, PartsPerMillionTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPartsPerThousand(decimalfraction.PartsPerThousand).DecimalFractions, PartsPerThousandTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPartsPerTrillion(decimalfraction.PartsPerTrillion).DecimalFractions, PartsPerTrillionTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPercent(decimalfraction.Percent).DecimalFractions, PercentTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPicolitersPerLiter(decimalfraction.PicolitersPerLiter).DecimalFractions, PicolitersPerLiterTolerance);
AssertEx.EqualTolerance(1, VolumeConcentration.FromPicolitersPerMililiter(decimalfraction.PicolitersPerMililiter).DecimalFractions, PicolitersPerMililiterTolerance);
}
/// <summary>
/// Read the equivalent CO2 in ppm and equivalent Total Volatile Compound in ppb
/// </summary>
/// <param name="equivalentCO2">The equivalent CO2 (eCO2) output range for CCS811 is from
/// 400ppm up to 29206ppm.</param>
/// <param name="equivalentTotalVolatileOrganicCompound">The equivalent Total Volatile Organic Compound (eTVOC)
/// output range for CCS811 is from 0ppb up to 32768ppb</param>
/// <param name="rawCurrentSelected">Raw data containing the value of the
/// current through the sensor(0μA to 63μA)</param>
/// <param name="rawAdcReading">Raw data containing the
/// readings of the voltage across the sensor with the selected
/// current(1023 = 1.65V) where 1023 is the maximum value</param>
/// <returns>True if success</returns>
public bool TryReadGasData(out VolumeConcentration equivalentCO2, out VolumeConcentration equivalentTotalVolatileOrganicCompound, out ElectricCurrent rawCurrentSelected, out int rawAdcReading)
{
int equivalentCO2InPpm = -1;
int equivalentTotalVolatileOrganicCompoundInPpb = -1;
int rawCurrent = -1;
rawAdcReading = -1;
Span <byte> toRead = stackalloc byte[8];
ReadRegister(Register.ALG_RESULT_DATA, toRead);
if (toRead[5] != (byte)Error.NoError)
{
equivalentCO2 = VolumeConcentration.Zero;
equivalentTotalVolatileOrganicCompound = VolumeConcentration.Zero;
rawCurrentSelected = ElectricCurrent.Zero;
return(false);
}
equivalentCO2InPpm = BinaryPrimitives.ReadInt16BigEndian(toRead.Slice(0, 2));
equivalentTotalVolatileOrganicCompoundInPpb = BinaryPrimitives.ReadInt16BigEndian(toRead.Slice(2, 2));
rawCurrent = toRead[6] >> 2;
rawAdcReading = ((toRead[6] & 0b0000_0011) << 2) + toRead[7];
equivalentCO2 = VolumeConcentration.FromPartsPerMillion(equivalentCO2InPpm);
equivalentTotalVolatileOrganicCompound = VolumeConcentration.FromPartsPerBillion(equivalentTotalVolatileOrganicCompoundInPpb);
rawCurrentSelected = ElectricCurrent.FromMicroamperes(rawCurrent);
return((equivalentCO2InPpm >= 400) && (equivalentCO2InPpm <= 29206) && (equivalentTotalVolatileOrganicCompoundInPpb >= 0) && (equivalentTotalVolatileOrganicCompoundInPpb <= 32768));
}
public void NumberToPartsPerBillionTest() => Assert.Equal(VolumeConcentration.FromPartsPerBillion(2), 2.PartsPerBillion());
public static VolumeConcentration PartsPerBillion <T>(this T value) => VolumeConcentration.FromPartsPerBillion(Convert.ToDecimal(value));
