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Glitch Filtering

The following sample illustrates configuring the glitch filter to 5 milliseconds.

Code

using System;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;

namespace GlitchFilter
{
public class Program
{
// An output port allows you to write (send a signal) to a pin
static OutputPort _led = new OutputPort(Pins.ONBOARD_LED, false);
// An input port reads the signal from a pin (Should be Pins.ONBOARD_BTN, but there is a bug)
static InputPort _button = new InputPort(Pins.ONBOARD_SW1, true, Port.ResistorMode.Disabled);

public static void Main()
{
// turn the LED off initially
_led.Write(false);

// smooth noise out over 5 milliseconds
Cpu.GlitchFilterTime = new TimeSpan(0, 0, 0, 0, 5);

// run forever
while (true)
{
// set the onboard LED output to be the input of the button
_led.Write(_button.Read());
}
}
}
}

Netduino Samples Github Repository

Full source code for all of the samples can be found in the Netduino Samples repository on Github.