Meadow.Foundation.Sensors.Temperature.Mcp9808

Mcp9808
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

Mcp9808 mcp9808;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    mcp9808 = new Mcp9808(Device.CreateI2cBus());

    var consumer = Mcp9808.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Temperature New Value {result.New.Celsius}C");
            Resolver.Log.Info($"Temperature Old Value {result.Old?.Celsius}C");
        },
        filter: null
    );
    mcp9808.Subscribe(consumer);

    mcp9808.Updated += (object sender, IChangeResult<Meadow.Units.Temperature> e) =>
    {
        Resolver.Log.Info($"Temperature Updated: {e.New.Celsius:N2}C");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var temp = await mcp9808.Read();

    Resolver.Log.Info($"Temperature New Value {temp.Celsius}C");

    mcp9808.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Class Mcp9808

Represents a Mcp9808 temperature sensor

Assembly: Mcp9808.dll

View Source

Declaration

public class Mcp9808 : ByteCommsSensorBase<Temperature>, IObservable<IChangeResult<Temperature>>, IDisposable, ITemperatureSensor, ISamplingSensor<Temperature>, ISensor<Temperature>, ISensor, ISamplingSensor, II2cPeripheral

Inheritance: System.Object -> Meadow.Foundation.ObservableBase<UNIT>

Implements:
System.IObservable<Meadow.IChangeResult<Meadow.Units.Temperature>>, System.IDisposable, Meadow.Peripherals.Sensors.ITemperatureSensor, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>, Meadow.Peripherals.Sensors.ISensor, Meadow.Peripherals.Sensors.ISamplingSensor, Meadow.Hardware.II2cPeripheral

Properties

DefaultI2cAddress

The default I2C address for the peripheral

View Source

Declaration

public byte DefaultI2cAddress { get; }

Temperature

The temperature, in degrees celsius (°C), from the last reading.

View Source

Declaration

public Temperature? Temperature { get; protected set; }

Methods

Wake()

Wake the device if it's in sleep state

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Declaration

public void Wake()

Sleep()

Set the device into a low power sleep state

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Declaration

public void Sleep()

GetDeviceId()

Read the device ID

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Declaration

public ushort GetDeviceId()

Returns

System.UInt16

GetManufactureId()

Read the manufacture ID

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Declaration

public ushort GetManufactureId()

Returns

System.UInt16

GetResolution()

Read resolution

View Source

Declaration

public byte GetResolution()

Returns

System.Byte

SetResolution(byte)

Set resolution

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Declaration

public void SetResolution(byte resolution)

Parameters

Type	Name
System.Byte	resolution

ReadSensor()

Reads data from the sensor

View Source

Declaration

protected override Task<Temperature> ReadSensor()

Returns

System.Threading.Tasks.Task<Meadow.Units.Temperature>: The latest sensor reading

Implements

• System.IObservable<Meadow.IChangeResult<Meadow.Units.Temperature>>
• System.IDisposable
• Meadow.Peripherals.Sensors.ITemperatureSensor
• Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>
• Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>
• Meadow.Peripherals.Sensors.ISensor
• Meadow.Peripherals.Sensors.ISamplingSensor
• Meadow.Hardware.II2cPeripheral