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Hc2.cs
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/
Hc2.cs
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using Meadow.Peripherals.Sensors;
using Meadow.Peripherals.Sensors.Atmospheric;
using Meadow.Units;
using System;
using System.Threading.Tasks;
namespace Meadow.Foundation.Sensors.Atmospheric;
/// <summary>
/// Represents a HC2 humidity probe by Rotronic
/// </summary>
public partial class HC2 :
PollingSensorBase<(RelativeHumidity? Humidity, Units.Temperature? Temperature)>,
ITemperatureSensor, IHumiditySensor
{
private event EventHandler<IChangeResult<Units.Temperature>> _temperatureHandlers = default!;
private event EventHandler<IChangeResult<RelativeHumidity>> _humidityHandlers = default!;
event EventHandler<IChangeResult<Units.Temperature>> ISamplingSensor<Units.Temperature>.Updated
{
add => _temperatureHandlers += value;
remove => _temperatureHandlers -= value;
}
event EventHandler<IChangeResult<RelativeHumidity>> ISamplingSensor<RelativeHumidity>.Updated
{
add => _humidityHandlers += value;
remove => _humidityHandlers -= value;
}
/// <summary>
/// The current relative humidity
/// </summary>
public Units.RelativeHumidity? Humidity { get; protected set; }
/// <summary>
/// The current temperature
/// </summary>
public Units.Temperature? Temperature => Conditions.Temperature;
private readonly CommunicationType communicationType;
/// <summary>
/// Raise all change events for subscribers
/// </summary>
/// <param name="changeResult">humidity and temperature</param>
protected override void RaiseEventsAndNotify(IChangeResult<(Units.RelativeHumidity? Humidity, Units.Temperature? Temperature)> changeResult)
{
if (changeResult.New.Humidity is { } humidity)
{
_humidityHandlers?.Invoke(this, new ChangeResult<Units.RelativeHumidity>(humidity, changeResult.Old?.Humidity));
}
if (changeResult.New.Temperature is { } temperature)
{
_temperatureHandlers?.Invoke(this, new ChangeResult<Units.Temperature>(temperature, changeResult.Old?.Temperature));
}
base.RaiseEventsAndNotify(changeResult);
}
/// <summary>
/// Reads the humidity and temperature.
/// </summary>
protected override async Task<(Units.RelativeHumidity?, Units.Temperature?)> ReadSensor()
{
(Units.RelativeHumidity? Humidity, Units.Temperature? Temperature) conditions = Conditions;
switch (communicationType)
{
case CommunicationType.Analog:
conditions = await ReadSensorAnalog();
break;
case CommunicationType.Serial:
conditions = ReadSensorSerial();
break;
}
return conditions;
}
async Task<Units.Temperature> ISensor<Units.Temperature>.Read()
=> (await Read()).Temperature!.Value;
async Task<Units.RelativeHumidity> ISensor<Units.RelativeHumidity>.Read()
=> (await Read()).Humidity!.Value;
}