/// <summary>
/// Make a temperature and humidity reading.
/// </summary>
public void Update()
{
_si7021.WriteByte(Registers.MeasureHumidityNoHold);
//
// Maximum conversion time is 12ms (page 5 of the datasheet).
//
Thread.Sleep(25);
var data = _si7021.ReadBytes(3);
var humidityReading = (ushort)((data[0] << 8) + data[1]);
Humidity = ((125 * (float)humidityReading) / 65536) - 6;
if (Humidity < 0)
{
Humidity = 0;
}
else
{
if (Humidity > 100)
{
Humidity = 100;
}
}
data = _si7021.ReadRegisters(Registers.ReadPreviousTemperatureMeasurement, 2);
var temperatureReading = (short)((data[0] << 8) + data[1]);
Temperature = (float)(((175.72 * temperatureReading) / 65536) - 46.85);
}
