private Weight ReadWeight()
{
_readLock.Wait();
try
{
int raw = ReadRaw();
double unitValue = (raw - TareValue) / _settings.CalibrationValue;
IWeightSystem baseWeight = null;
if (_settings.CalibrationWeightSystem == WeightSystem.Metric)
{
baseWeight = new MetricWeight(unitValue, _settings.CalibrationMetricUnit);
}
else if (_settings.CalibrationWeightSystem == WeightSystem.Imperial)
{
baseWeight = new ImperialWeight(unitValue, _settings.CalibrationImperialUnit);
}
else
{
throw new Exception("HX711 was uncalibrated or not calibrated properly and can't convert to a weight!");
}
return(new Weight(baseWeight));
}
finally
{
_readLock.Release();
}
}
public Weight(IWeightSystem weight)
{
if (weight is MetricWeight mw)
{
Metric = mw;
}
else if (weight is ImperialWeight iw)
{
Imperial = iw;
}
else
{
throw new UnknownConversionException($"Internal IoT Library Error! Unknown conversion to 'Weight' from '{weight.GetType()}'");
}
}
/// <summary>
/// New Imperial Weight measurement from existing weight measurement
/// </summary>
/// <param name="weightSystem"></param>
public ImperialWeight(IWeightSystem weightSystem)
{
_pounds = _ounces = _grains = _stones = _tons = 0;
if (weightSystem is MetricWeight mw)
{
BaseValue = mw.Grams * GRAMS_CONVERSION_FACTOR;
}
else if (weightSystem is ImperialWeight iw)
{
_pounds = iw.Pounds;
_ounces = iw.Ounces;
_grains = iw.Grains;
_stones = iw.Stones;
_tons = iw.Tons;
}
else
{
throw new UnknownConversionException($"Unknown conversion from '{weightSystem.GetType().ToString()}' to 'Imperial'");
}
}
/// <summary>
/// New Metric Weight measurement from existing weight measurement
/// </summary>
/// <param name="weightSystem"></param>
public MetricWeight(IWeightSystem weightSystem)
{
_picograms = _nanograms = _micrograms = _milligrams = _grams = _kilograms = _megagrams = 0;
if (weightSystem is ImperialWeight iw)
{
BaseValue = iw.Pounds / POUNDS_CONVERSION_FACTOR;
}
else if (weightSystem is MetricWeight mw)
{
_picograms = mw.Picograms;
_nanograms = mw.Nanograms;
_micrograms = mw.Micrograms;
_milligrams = mw.Milligrams;
_grams = mw.Grams;
_kilograms = mw.Kilograms;
_megagrams = mw.Megagrams;
}
else
{
throw new UnknownConversionException($"Unknown conversion from '{weightSystem.GetType().ToString()}' to 'Imperial'");
}
}
