static async Task 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
const double defaultSeaLevelPressure = 1033.00;
var i2cSettings = new I2cConnectionSettings(busId, Bme280.DefaultI2cAddress);
var i2cDevice = I2cDevice.Create(i2cSettings);
var i2CBmpe80 = new Bme280(i2cDevice);
using (i2CBmpe80)
{
while (true)
{
//set mode forced so device sleeps after read
i2CBmpe80.SetPowerMode(PowerMode.Forced);
//set samplings
i2CBmpe80.SetTemperatureSampling(Sampling.UltraLowPower);
i2CBmpe80.SetPressureSampling(Sampling.UltraLowPower);
i2CBmpe80.SetHumiditySampling(Sampling.UltraLowPower);
//read values
Temperature tempValue = await i2CBmpe80.ReadTemperatureAsync();
Console.WriteLine($"Temperature: {tempValue.Celsius} C");
double preValue = await i2CBmpe80.ReadPressureAsync();
Console.WriteLine($"Pressure: {preValue} Pa");
double altValue = await i2CBmpe80.ReadAltitudeAsync(defaultSeaLevelPressure);
Console.WriteLine($"Altitude: {altValue} meters");
double humValue = await i2CBmpe80.ReadHumidityAsync();
Console.WriteLine($"Humidity: {humValue} %");
Thread.Sleep(1000);
//set higher sampling
i2CBmpe80.SetTemperatureSampling(Sampling.LowPower);
Console.WriteLine(i2CBmpe80.ReadTemperatureSampling());
i2CBmpe80.SetPressureSampling(Sampling.UltraHighResolution);
Console.WriteLine(i2CBmpe80.ReadPressureSampling());
i2CBmpe80.SetHumiditySampling(Sampling.Standard);
Console.WriteLine(i2CBmpe80.ReadHumiditySampling());
i2CBmpe80.SetFilterMode(FilteringMode.Off);
Console.WriteLine(i2CBmpe80.ReadFilterMode());
//set mode forced and read again
i2CBmpe80.SetPowerMode(PowerMode.Forced);
//read values
tempValue = await i2CBmpe80.ReadTemperatureAsync();
Console.WriteLine($"Temperature: {tempValue.Celsius} C");
preValue = await i2CBmpe80.ReadPressureAsync();
Console.WriteLine($"Pressure: {preValue} Pa");
altValue = await i2CBmpe80.ReadAltitudeAsync(defaultSeaLevelPressure);
Console.WriteLine($"Altitude: {altValue} meters");
humValue = await i2CBmpe80.ReadHumidityAsync();
Console.WriteLine($"Humidity: {humValue} %");
Thread.Sleep(5000);
//set sampling to higher
i2CBmpe80.SetTemperatureSampling(Sampling.UltraHighResolution);
Console.WriteLine(i2CBmpe80.ReadTemperatureSampling());
i2CBmpe80.SetPressureSampling(Sampling.UltraLowPower);
Console.WriteLine(i2CBmpe80.ReadPressureSampling());
i2CBmpe80.SetHumiditySampling(Sampling.UltraLowPower);
Console.WriteLine(i2CBmpe80.ReadHumiditySampling());
i2CBmpe80.SetFilterMode(FilteringMode.X2);
Console.WriteLine(i2CBmpe80.ReadFilterMode());
}
}
}