GpioChangeReader.Polarity Property

Definition

Namespace:

Windows.Devices.Gpio

Gets or sets the polarity of transitions that will be recorded. The polarity may only be changed when pin change recording is not started.

public:
 property GpioChangePolarity Polarity { GpioChangePolarity get(); void set(GpioChangePolarity value); };

GpioChangePolarity Polarity();

void Polarity(GpioChangePolarity value);

public GpioChangePolarity Polarity { get; set; }

var gpioChangePolarity = gpioChangeReader.polarity;
gpioChangeReader.polarity = gpioChangePolarity;

Public Property Polarity As GpioChangePolarity

Property Value

GpioChangePolarity

Rising or Falling. The default polarity value is Falling.

Remarks

Listening to a single edge (Falling or Rising) can be considerably more efficient than listening to both edges.

The following exceptions can be thrown when setting the polarity:

• E_INVALIDARG - value is not a valid GpioChangePolarity value.
• HRESULT_FROM_WIN32(ERROR_BAD_COMMAND) - change recording is currently active. Polarity can only be set before calling Start() or after calling Stop().