protected override void Configure()
{
CheckInitialization();
const byte controlRegisterAddress = 0x20;
var controlRegisterByteValue = TemperatureAndPressureSensorHelper.ConfigureControlByte();
RegisterHelper.WriteByte(device, controlRegisterAddress, controlRegisterByteValue);
}
protected override void Configure()
{
CheckInitialization();
const byte controlRegisterAddress = 0x20;
var controlRegisterByteValue = HumiditySensorHelper.ConfigureControlByte();
RegisterHelper.WriteByte(device, controlRegisterAddress, controlRegisterByteValue);
GetHumidityScalers();
}
public float GetHumidity()
{
CheckInitialization();
const byte humidityLowByteRegisterAddress = 0x28;
const byte humidityHighByteRegisterAddress = 0x29;
var rawHumidity = RegisterHelper.GetShort(device,
new byte[] { humidityLowByteRegisterAddress, humidityHighByteRegisterAddress });
return(ConvertToRelativeHumidity(rawHumidity));
}
public float GetTemperature()
{
CheckInitialization();
// Register address list
const byte tempLowByteRegisterAddress = 0x2B;
const byte tempHighByteRegisterAddress = 0x2C;
// Read low, and high bytes and convert them to 16-bit signed integer
var temperature = RegisterHelper.GetShort(device,
new byte[] { tempLowByteRegisterAddress, tempHighByteRegisterAddress });
// Convert to physical units [degrees Celsius]
return(temperature / tempScaler + tempOffset);
}
public float GetPressure()
{
CheckInitialization();
// Register address list
const byte pressureLowByteRegisterAddress = 0x28;
const byte pressureMiddleByteRegisterAddress = 0x29;
const byte pressureHighByteRegisterAddress = 0x2A;
// Read registers and convert resulting values to a 32-bit signed integer
var pressure = RegisterHelper.GetInt(device, new byte[] {
pressureLowByteRegisterAddress,
pressureMiddleByteRegisterAddress,
pressureHighByteRegisterAddress
});
// Convert to physical units [hectopascals, hPa]
return(pressure / pressureScaler);
}
private void GetHumidityScalers()
{
CheckInitialization();
const byte h0RegisterAddress = 0x30;
const byte h1RegisterAddress = 0x31;
const byte t0LowByteRegisterAddress = 0x36;
const byte t0HighByteRegisterAddress = 0x37;
const byte t1LowByteRegisterAddress = 0x3A;
const byte t1HighByteRegisterAddress = 0x3B;
const float hScaler = 2.0f;
humidityScalerH0 = RegisterHelper.ReadByte(device, h0RegisterAddress) / hScaler;
humidityScalerH1 = RegisterHelper.ReadByte(device, h1RegisterAddress) / hScaler;
humidityScalerT0 = RegisterHelper.GetShort(device,
new byte[] { t0LowByteRegisterAddress, t0HighByteRegisterAddress });
humidityScalerT1 = RegisterHelper.GetShort(device,
new byte[] { t1LowByteRegisterAddress, t1HighByteRegisterAddress });
}
protected bool WhoAmI(byte registerAddress, byte expectedValue)
{
byte whoami = RegisterHelper.ReadByte(device, registerAddress);
return(whoami == expectedValue);
}
