README.md

HTS221 - Capacitive digital sensor for relative humidity and temperature

Some of the applications mentioned by the datasheet:

• Air conditioning, heating and ventilation
• Air humidifiers
• Refrigerators
• Wearable devices
• Smart home automation
• Industrial automation
• Respiratory equipment
• Asset and goods tracking

Documentation

• https://www.st.com/resource/en/datasheet/hts221.pdf

Usage

using System;
using System.Threading;
using System.Device.I2c;
using Iot.Device.Common;
using Iot.Device.Hts221;
using UnitsNet;

// I2C address on SenseHat board
const int I2cAddress = 0x5F;

using Hts221 th = new(CreateI2cDevice());
while (true)
{
    var tempValue = th.Temperature;
    var humValue = th.Humidity;

    Console.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
    Console.WriteLine($"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);
}

I2cDevice CreateI2cDevice()
{
    I2cConnectionSettings settings = new(1, I2cAddress);
    return I2cDevice.Create(settings);
}