GetBmp280TemperatureAndPressure()
{
// bus id on the raspberry pi 3 and 4
const int busId = 1;
// set this to the current sea level pressure in the area for correct altitude readings
var defaultSeaLevelPressure = WeatherHelper.MeanSeaLevel;
I2cConnectionSettings i2CSettings = new(busId, Bmx280Base.DefaultI2cAddress);
var i2CDevice = I2cDevice.Create(i2CSettings);
using var i2CBmp280 = new Bmp280(i2CDevice)
{
TemperatureSampling = Sampling.HighResolution,
PressureSampling = Sampling.HighResolution
};
// Perform a synchronous measurement
var readResult = await i2CBmp280.ReadAsync();
var temperature = readResult.Temperature;
Console.WriteLine($"Temperature: {Green($"{readResult.Temperature?.DegreesFahrenheit:0.#}\u00B0F")}");
var pressure = readResult.Pressure;
Console.WriteLine($"Pressure: {Green($"{readResult.Pressure?.Millibars:0.##}mb")}");
if (temperature == null || pressure == null)
{
return(readResult.Temperature?.DegreesFahrenheit, readResult.Pressure?.Millibars);
}
var altitude =
WeatherHelper.CalculateAltitude(pressure.Value, defaultSeaLevelPressure, temperature.Value);
Console.WriteLine($"Calculated Altitude: {Green($"{altitude.Feet:0,000}")}");
return(readResult.Temperature?.DegreesFahrenheit, readResult.Pressure?.Millibars);
}
