A Complete Program—A Flashlight Using Interrupts

We can now make a flashlight that operates under interrupt control (Example 4-2).

Example 4-2. A .NET Micro Framework flashlight that uses interrupts

using System;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;

namespace MicroFrameworkFlashlight
{
   public class MicroFrameworkFlashlight
   {
      static OutputPort lampOutput;
      static InterruptPort switchInterrupt; public static void Main() { Cpu.Pin lampPin = Cpu.Pin.GPIO_Pin1; Cpu.Pin switchPin = Cpu.Pin.GPIO_Pin2; lampOutput = new OutputPort(lampPin, false); switchInterrupt = new InterruptPort( switchPin, false, Port.ResistorMode.PullDown, Port.InterruptMode.InterruptEdgeBoth); switchInterrupt.OnInterrupt += new GPIOInterruptEventHandler(switchInterrupt_OnInterrupt); ...

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