public override bool Configure(string jsonDeviceConfiguration)
{
var config = DeserializeDeviceConfig <Si7021Configuration>(jsonDeviceConfiguration);
var i2CSettings = new I2cConnectionSettings(1, config.I2CAddress);
var i2CDevice = I2cDevice.Create(i2CSettings);
// TODO: probably requires try catch?! Check device availability
_si7021 = new Si7021(i2CDevice)
{
Heater = config.HeaterIsEnabled,
Resolution = config.Resolution
};
return(true);
}
static void Main(string[] args)
{
I2cConnectionSettings settings = new I2cConnectionSettings(1, Si7021.DefaultI2cAddress);
I2cDevice device = I2cDevice.Create(settings);
using (Si7021 sensor = new Si7021(device, Resolution.Resolution1))
{
while (true)
{
Console.WriteLine($"Temperature: {sensor.Temperature.Celsius}℃");
Console.WriteLine($"Humidity: {sensor.Humidity}%");
Console.WriteLine();
Thread.Sleep(1000);
}
}
}
static void Main(string[] args)
{
Console.WriteLine("Hello Si7021!");
const int Si7021Address = 0x40;
const int BusId = 1;
var i2cSettings = new I2cConnectionSettings(BusId, Si7021Address);
var i2cDevice = new Windows10I2cDevice(i2cSettings);
var i2CSi7021 = new Si7021(i2cDevice);
using (i2CSi7021)
{
Console.WriteLine($"Temperature in fahrenheit: {i2CSi7021.ReadTemperatureInFahrenheit()}");
Console.WriteLine($"Temperature in celcius: {i2CSi7021.ReadTemperatureInCelcius()}");
Console.WriteLine($"Relative humidity is: {i2CSi7021.ReadHumidity()}%");
}
}
public static (double temperatureFahrenheit, double relativeHumidityPercent) GetSiTemperatureAndHumidity()
{
// bus id on the raspberry pi 3 and 4
const int busId = 1;
// set this to the current sea level pressure in the area for correct altitude readings
I2cConnectionSettings i2CSettings = new(busId, Si7021.DefaultI2cAddress);
var i2CDevice = I2cDevice.Create(i2CSettings);
using var i2CSi7021 = new Si7021(i2CDevice);
var temperature = i2CSi7021.Temperature;
Console.WriteLine($"Temperature: {Green($"{temperature.DegreesFahrenheit:0.#}\u00B0F")}");
var humidity = i2CSi7021.Humidity;
Console.WriteLine($"Humidity: {Green($"{humidity.Percent:0}%")}");
return(temperature.DegreesFahrenheit, humidity.Percent);
}
public static void Main(string[] args)
{
I2cConnectionSettings settings = new I2cConnectionSettings(1, Si7021.DefaultI2cAddress);
I2cDevice device = I2cDevice.Create(settings);
using (Si7021 sensor = new Si7021(device, Resolution.Resolution1))
{
while (true)
{
var tempValue = sensor.Temperature;
var humValue = sensor.Humidity;
Console.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Relative humidity: {humValue.Percent:0.#}%");
// WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(tempValue, humValue).DegreesCelsius:0.#}\u00B0C");
Console.WriteLine();
Thread.Sleep(1000);
}
}
}
static async Task Main(string[] args)
{
try
{
//
// Parse options
//
Options = new AppOptions();
Options.Parse(args);
if (Options.Exit)
{
return;
}
//
// Open Device
//
using (var device = await Si7021.Open())
{
if (null == device)
{
throw new ApplicationException($"Unable to open sensor. Please ensure that no other applications are using this device.");
}
//
// Dump device info
//
Log.WriteLineRaw($"Model: {device.Model}");
Log.WriteLineRaw($"Serial Number: {device.SerialNumber}");
Log.WriteLineRaw($"Firmware Rev: {device.FirmwareRevision}");
//
// Init module client
//
if (Options.UseEdge)
{
Init().Wait();
}
//
// Launch background thread to obtain readings
//
var background = Task.Run(async() =>
{
while (true)
{
device.Update();
var message = new MessageBody();
message.Ambient.Temperature = device.Temperature;
message.Ambient.Humidity = device.Humidity;
message.TimeCreated = DateTime.Now;
string dataBuffer = JsonConvert.SerializeObject(message);
var eventMessage = new Message(Encoding.UTF8.GetBytes(dataBuffer));
Log.WriteLineRaw($"SendEvent: [{dataBuffer}]");
if (Options.UseEdge)
{
await ioTHubModuleClient.SendEventAsync("temperatureOutput", eventMessage);
}
await Task.Delay(1000);
}
});
//
// Wait until the app unloads or is cancelled
//
var cts = new CancellationTokenSource();
AssemblyLoadContext.Default.Unloading += (ctx) => cts.Cancel();
Console.CancelKeyPress += (sender, cpe) => cts.Cancel();
WhenCancelled(cts.Token).Wait();
}
}
catch (Exception ex)
{
Log.WriteLineException(ex);
}
}
public void Dispose()
{
_si7021.Heater = false;
_si7021.Dispose();
_si7021 = null;
}
