/// <summary>
/// Entry point for example program
/// </summary>
/// <param name="args">Command line arguments</param>
public static void Main(string[] args)
{
Console.WriteLine("Hello Bme280!");
// bus id on the raspberry pi 3
const int busId = 1;
// set this to the current sea level pressure in the area for correct altitude readings
var defaultSeaLevelPressure = WeatherHelper.MeanSeaLevel;
var i2cSettings = new I2cConnectionSettings(busId, Bme280.DefaultI2cAddress);
var i2cDevice = I2cDevice.Create(i2cSettings);
var i2CBmpe80 = new Bme280(i2cDevice);
using (i2CBmpe80)
{
while (true)
{
// set higher sampling
i2CBmpe80.TemperatureSampling = Sampling.LowPower;
i2CBmpe80.PressureSampling = Sampling.UltraHighResolution;
i2CBmpe80.HumiditySampling = Sampling.Standard;
// set mode forced so device sleeps after read
i2CBmpe80.SetPowerMode(Bmx280PowerMode.Forced);
// wait for measurement to be performed
var measurementTime = i2CBmpe80.GetMeasurementDuration();
Thread.Sleep(measurementTime);
// read values
i2CBmpe80.TryReadTemperature(out var tempValue);
i2CBmpe80.TryReadPressure(out var preValue);
i2CBmpe80.TryReadHumidity(out var humValue);
// Note that if you already have the pressure value and the temperature, you could also calculate altitude by using
// var altValue = WeatherHelper.CalculateAltitude(preValue, defaultSeaLevelPressure, tempValue) which would be more performant.
i2CBmpe80.TryReadAltitude(defaultSeaLevelPressure, out var altValue);
Console.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Pressure: {preValue.Hectopascals:0.##}hPa");
Console.WriteLine($"Altitude: {altValue:0.##}m");
Console.WriteLine($"Relative humidity: {humValue:0.#}%");
// WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Thread.Sleep(1000);
// change sampling and filter
i2CBmpe80.TemperatureSampling = Sampling.UltraHighResolution;
i2CBmpe80.PressureSampling = Sampling.UltraLowPower;
i2CBmpe80.HumiditySampling = Sampling.UltraLowPower;
i2CBmpe80.FilterMode = Bmx280FilteringMode.X2;
// set mode forced and read again
i2CBmpe80.SetPowerMode(Bmx280PowerMode.Forced);
// wait for measurement to be performed
measurementTime = i2CBmpe80.GetMeasurementDuration();
Thread.Sleep(measurementTime);
// read values
i2CBmpe80.TryReadTemperature(out tempValue);
i2CBmpe80.TryReadPressure(out preValue);
i2CBmpe80.TryReadHumidity(out humValue);
// Note that if you already have the pressure value and the temperature, you could also calculate altitude by using
// var altValue = WeatherHelper.CalculateAltitude(preValue, defaultSeaLevelPressure, tempValue) which would be more performant.
i2CBmpe80.TryReadAltitude(defaultSeaLevelPressure, out altValue);
Console.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Pressure: {preValue.Hectopascals:0.##}hPa");
Console.WriteLine($"Altitude: {altValue:0.##}m");
Console.WriteLine($"Relative humidity: {humValue:0.#}%");
// WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Thread.Sleep(5000);
}
}
}
static void Main(string[] args)
{
Console.WriteLine("Hello Bme280!");
//bus id on the raspberry pi 3
const int busId = 1;
//set this to the current sea level pressure in the area for correct altitude readings
var defaultSeaLevelPressure = Pressure.MeanSeaLevel;
var i2cSettings = new I2cConnectionSettings(busId, Bme280.DefaultI2cAddress);
var i2cDevice = I2cDevice.Create(i2cSettings);
var i2CBmpe80 = new Bme280(i2cDevice);
using (i2CBmpe80)
{
while (true)
{
//set higher sampling
i2CBmpe80.TemperatureSampling = Sampling.LowPower;
i2CBmpe80.PressureSampling = Sampling.UltraHighResolution;
i2CBmpe80.HumiditySampling = Sampling.Standard;
//set mode forced so device sleeps after read
i2CBmpe80.SetPowerMode(Bmx280PowerMode.Forced);
// wait for measurement to be performed
var measurementTime = i2CBmpe80.GetMeasurementDuration();
Thread.Sleep(measurementTime);
//read values
i2CBmpe80.TryReadTemperature(out var tempValue);
Console.WriteLine($"Temperature: {tempValue.Celsius} \u00B0C");
i2CBmpe80.TryReadPressure(out var preValue);
Console.WriteLine($"Pressure: {preValue.Hectopascal} hPa");
i2CBmpe80.TryReadAltitude(defaultSeaLevelPressure, out var altValue);
Console.WriteLine($"Altitude: {altValue} meters");
i2CBmpe80.TryReadHumidity(out var humValue);
Console.WriteLine($"Humidity: {humValue} %");
Thread.Sleep(1000);
//change sampling and filter
i2CBmpe80.TemperatureSampling = Sampling.UltraHighResolution;
i2CBmpe80.PressureSampling = Sampling.UltraLowPower;
i2CBmpe80.HumiditySampling = Sampling.UltraLowPower;
i2CBmpe80.FilterMode = Bmx280FilteringMode.X2;
//set mode forced and read again
i2CBmpe80.SetPowerMode(Bmx280PowerMode.Forced);
// wait for measurement to be performed
measurementTime = i2CBmpe80.GetMeasurementDuration();
Thread.Sleep(measurementTime);
//read values
i2CBmpe80.TryReadTemperature(out tempValue);
Console.WriteLine($"Temperature: {tempValue.Celsius} \u00B0C");
i2CBmpe80.TryReadPressure(out preValue);
Console.WriteLine($"Pressure: {preValue.Hectopascal} hPa");
i2CBmpe80.TryReadAltitude(defaultSeaLevelPressure, out altValue);
Console.WriteLine($"Altitude: {altValue} meters");
i2CBmpe80.TryReadHumidity(out humValue);
Console.WriteLine($"Humidity: {humValue} %");
Thread.Sleep(5000);
}
}
}
