DigitalSignal Class

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

DMA/timer-backed pulse-train I/O on a small set of pins. Capable of pulse counting (ReadPulse), high-resolution edge capture (Capture), and emitting pulse-width-modulated sequences (Generate). All three operations are mutually exclusive and run asynchronously — completion is reported via OnReadPulseFinished / OnCaptureFinished / OnGenerateFinished. Only specific pins are supported (currently 0, 1, and 19).

public class DigitalSignal : IDisposable

Constructors

DigitalSignal(GpioPin pin)

public DigitalSignal(GpioPin pin)

Opens a digital-signal session on a supported pin (0, 1, or 19).

Parameter	Type	Description
pin	GpioPin

Properties

CanReadPulse

public bool CanReadPulse { get; }

True when no operation is in progress and ReadPulse may be called.

CanCapture

public bool CanCapture { get; }

True when no operation is in progress and Capture may be called.

CanGenerate

public bool CanGenerate { get; }

True when no operation is in progress and Generate may be called.

Methods

Dispose()

public void Dispose()

Releases the native pulse-train resources.

Dispose(bool disposing)

protected virtual void Dispose(bool disposing)

Dispose implementation.

Parameter	Type	Description
disposing	bool

ReadPulse(uint pulseNum, GpioPinEdge edge, bool waitForEdge)

public void ReadPulse(uint pulseNum, GpioPinEdge edge, bool waitForEdge)

Counts up to pulseNum edges matching edge and measures the total elapsed time. Result is delivered via OnReadPulseFinished.

Parameter	Type	Description
pulseNum	uint	Number of edges to count.
edge	GpioPinEdge	Which edge(s) to count.
waitForEdge	bool	When true, the timer starts on the first matching edge instead of immediately.

Capture(uint bufferSize, GpioPinEdge edge, bool waitForEdge)

public void Capture(uint bufferSize, GpioPinEdge edge, bool waitForEdge)

Captures inter-edge intervals. See full-parameter overload for buffer-layout details.

Parameter	Type	Description
bufferSize	uint
edge	GpioPinEdge
waitForEdge	bool

Capture(uint count, GpioPinEdge edge, bool waitForEdge, TimeSpan timeout)

public void Capture(uint count, GpioPinEdge edge, bool waitForEdge, TimeSpan timeout)

Capture timestamps of count edges on the pin.

Parameter	Type	Description
count	uint
edge	GpioPinEdge
waitForEdge	bool
timeout	TimeSpan

Generate(uint[] data, uint offset, uint count)

public void Generate(uint[] data, uint offset, uint count)

Emits a pulse train described by data with default multiplier and starting high.

Parameter	Type	Description
data	uint[]
offset	uint
count	uint

Generate(uint[] data, uint offset, uint count, uint multiplier)

public void Generate(uint[] data, uint offset, uint count, uint multiplier)

Emits a pulse train with explicit multiplier and starting high.

Parameter	Type	Description
data	uint[]
offset	uint
count	uint
multiplier	uint

Generate(uint[] data, uint offset, uint count, uint multiplier, GpioPinValue startingPolarity)

public void Generate(uint[] data, uint offset, uint count, uint multiplier, GpioPinValue startingPolarity)

Emits a pulse train: each data entry is a duration in timer ticks, alternating polarity starting from startingPolarity.

Parameter	Type	Description
data	uint[]	Buffer of segment durations.
offset	uint	Starting index in data.
count	uint	Number of entries to emit.
multiplier	uint	Multiplier applied to each duration entry (timer-tick scaling).
startingPolarity	GpioPinValue	Polarity of the first segment.

Abort()

public void Abort()

Aborts the running operation, if any.

Events

OnReadPulseFinished

public event PulseReadEventHandler OnReadPulseFinished

Raised when ReadPulse completes.

OnCaptureFinished

public event PulseCaptureEventHandler OnCaptureFinished

Raised when Capture completes.

OnGenerateFinished

public event PulseGenerateEventHandler OnGenerateFinished

Raised when Generate completes.