Class Hcsr04

HCSR04 Distance Sensor - driver not complete

Assembly: Hcsr04.dll

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public class Hcsr04 : SamplingSensorBase<Length>, IObservable<IChangeResult<Length>>, IRangeFinder, ISamplingSensor<Length>, ISensor<Length>, ISensor, ISamplingSensor, IDisposable

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

Derived:
Meadow.Foundation.ICs.IOExpanders.SerialWombatBase.Hcsr04

Implements:
System.IObservable<Meadow.IChangeResult<Meadow.Units.Length>>, Meadow.Peripherals.Sensors.Distance.IRangeFinder, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Length>, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Length>, Meadow.Peripherals.Sensors.ISensor, Meadow.Peripherals.Sensors.ISamplingSensor, System.IDisposable

Properties

Distance

Returns current distance

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public Length? Distance { get; protected set; }

MinimumDistance

Minimum valid distance in cm

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public double MinimumDistance { get; }

MaximumDistance

Maximum valid distance in cm

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public double MaximumDistance { get; }

IsDisposed

Is the object disposed

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public bool IsDisposed { get; }

Fields

triggerPort

Port for trigger Pin

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protected IDigitalOutputPort? triggerPort

echoPort

Port for echo Pin

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protected IDigitalInterruptPort? echoPort

Methods

MeasureDistance()

Sends a trigger signal

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public virtual void MeasureDistance()

ReadSensor()

Reads data from the sensor

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protected override Task<Length> ReadSensor()

Returns

System.Threading.Tasks.Task<Meadow.Units.Length>: The latest sensor reading### StartUpdating(TimeSpan?) Starts continuously sampling the sensor

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public override void StartUpdating(TimeSpan? updateInterval = null)

Parameters

Type	Name
System.Nullable<System.TimeSpan>	updateInterval

StopUpdating()

Stops sampling the sensor

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public override void StopUpdating()

Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

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public void Dispose()

Dispose(bool)

Dispose of the object

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protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	Is disposing

Implements

• System.IObservable<Meadow.IChangeResult<Meadow.Units.Length>>
• Meadow.Peripherals.Sensors.Distance.IRangeFinder
• Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Length>
• Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Length>
• Meadow.Peripherals.Sensors.ISensor
• Meadow.Peripherals.Sensors.ISamplingSensor
• System.IDisposable