Meadow.Foundation.Sensors.Atmospheric.Th02
Th02 | |
---|---|
Status | |
Source code | GitHub |
Datasheet(s) | GitHub |
NuGet package |
Code Example
Th02 sensor;
public override Task Initialize()
{
Resolver.Log.Info("Initializing...");
sensor = new Th02(Device.CreateI2cBus());
var consumer = Th02.CreateObserver(
handler: result =>
{
Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
},
filter: result =>
{
if (result.Old is { } old)
{
return (
(result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5);
}
return false;
}
);
sensor.Subscribe(consumer);
sensor.Updated += (sender, result) =>
{
Resolver.Log.Info($" Temperature: {result.New.Temperature?.Celsius:N2}C");
Resolver.Log.Info($" Relative Humidity: {result.New.Humidity?.Percent:N2}%");
};
return Task.CompletedTask;
}
public override async Task Run()
{
var conditions = await sensor.Read();
Resolver.Log.Info($"Temperature: {conditions.Temperature?.Celsius}°C, Relative Humidity: {conditions.Humidity?.Percent}%");
sensor.StartUpdating(TimeSpan.FromSeconds(1));
}
Sample project(s) available on GitHub
Wiring Example
To wire a Th02 to your Meadow board, connect the following:
Th02 | Meadow Pin |
---|---|
GND | GND |
SCL | D08 (SCL) |
SDA | D07 (SDA) |
VCC | 3V3 |
Class Th02
Represents a TH02 temperature and relative humidity sensor by Seeed Studio Found in the Grove Temperature and Humidity Sensor (High-Accuracy and Mini)
Assembly: Th02.dll
View Source
public class Th02 : ByteCommsSensorBase<(Temperature? Temperature, RelativeHumidity? Humidity)>, IObservable<IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>>, ISamplingSensor<(Temperature? Temperature, RelativeHumidity? Humidity)>, ISensor<(Temperature? Temperature, RelativeHumidity? Humidity)>, IDisposable, ITemperatureSensor, ISamplingSensor<Temperature>, ISensor<Temperature>, IHumiditySensor, ISamplingSensor<RelativeHumidity>, ISensor<RelativeHumidity>, ISensor, ISamplingSensor, II2cPeripheral
Inheritance: System.Object
-> Meadow.Foundation.ObservableBase<UNIT>
Implements:
Expand
System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>>
, Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
, Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
, System.IDisposable
, Meadow.Peripherals.Sensors.ITemperatureSensor
, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>
, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>
, Meadow.Peripherals.Sensors.Atmospheric.IHumiditySensor
, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.RelativeHumidity>
, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.RelativeHumidity>
, Meadow.Peripherals.Sensors.ISensor
, Meadow.Peripherals.Sensors.ISamplingSensor
, Meadow.Hardware.II2cPeripheral
Properties
Temperature
The current temperature
View Source
public Temperature? Temperature { get; }
Humidity
The current humidity
View Source
public RelativeHumidity? Humidity { get; }
DefaultI2cAddress
The default I2C address for the peripheral
View Source
public byte DefaultI2cAddress { get; }
Methods
RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)>)
Raise all change events for subscribers
View Source
protected override void RaiseEventsAndNotify(IChangeResult<(Temperature? Temperature, RelativeHumidity? Humidity)> changeResult)
Parameters
Type | Name | Description |
---|---|---|
Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>> | changeResult | temperature and humidity |
ReadSensor()
Calculates the compensated pressure and temperature.
View Source
protected override Task<(Temperature? Temperature, RelativeHumidity? Humidity)> ReadSensor()
Returns
System.Threading.Tasks.Task<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
Implements
System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>>
Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
System.IDisposable
Meadow.Peripherals.Sensors.ITemperatureSensor
Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>
Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>
Meadow.Peripherals.Sensors.Atmospheric.IHumiditySensor
Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.RelativeHumidity>
Meadow.Peripherals.Sensors.ISensor<Meadow.Units.RelativeHumidity>
Meadow.Peripherals.Sensors.ISensor
Meadow.Peripherals.Sensors.ISamplingSensor
Meadow.Hardware.II2cPeripheral