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PulseFeedback Class

Namespace: GHIElectronics.TinyCLR.Devices.Signals · Assembly: GHIElectronics.TinyCLR.Devices.Signals

Generates a digital pulse on one pin and measures a pulse-related duration on the same pin or a separate echo pin. Common applications: ultrasonic distance sensors (HC-SR04), 1-wire interrogation, capacitive touch.

public class PulseFeedback : IDisposable

Constructors​

PulseFeedback(GpioPin pin, PulseFeedbackMode mode)​

public PulseFeedback(GpioPin pin, PulseFeedbackMode mode) : this(pin, null, mode)

Single-pin (drain-duration) constructor.

ParameterTypeDescription
pinGpioPin
modePulseFeedbackMode

PulseFeedback(GpioPin pulsePin, GpioPin echoPin, PulseFeedbackMode mode)​

public PulseFeedback(GpioPin pulsePin, GpioPin echoPin, PulseFeedbackMode mode)

Two-pin (echo / duration-until-echo) constructor.

ParameterTypeDescription
pulsePinGpioPin
echoPinGpioPin
modePulseFeedbackMode

Properties​

DisableInterrupts​

public bool DisableInterrupts { get; set; }

When true, the trigger runs with interrupts disabled for jitter-free timing.

Timeout​

public TimeSpan Timeout { get; set; }

Maximum time to wait for the echo before giving up.

PulseLength​

public TimeSpan PulseLength { get; set; }

How long to drive the stimulus pulse before measuring.

PulseValue​

public GpioPinValue PulseValue { get; set; }

Active level of the stimulus pulse on pulsePin.

EchoValue​

public GpioPinValue EchoValue { get; set; }

Active level of the echo on echoPin.

Methods​

Dispose()​

public void Dispose()

Returns the pin(s) to high-impedance input.

Trigger()​

public extern TimeSpan Trigger()

Runs one stimulate-and-measure cycle. Returns the measured duration, or Timeout when no echo arrives in time.

Returns TimeSpan