■ HC-SR501 PIR 센서를 사용하는 방법을 보여준다.
▶ 부품 내역
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──────────────── 구분 모델 수량 비고 ───── ──── ── ── SENSOR/PIR HC-SC501 1 ──────────────── |
[회로 구성도]
▶ MainPage.xaml
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<Page x:Class="TestPIR.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:local="using:TestPIR" mc:Ignorable="d"> <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <TextBlock x:Name="messageTextBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="96" /> </Grid> </Page> |
▶ MainPage.xaml.cs
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using System.Threading.Tasks; using Windows.Devices.Gpio; using Windows.Foundation; using Windows.UI.Core; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; namespace TestPIR { /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// GPIO 컨트롤러 /// </summary> private GpioController gpioController = null; /// <summary> /// GPIO 핀 /// </summary> private GpioPin gpioPin = null; /// <summary> /// PIR 핀 번호 /// </summary> private const int PIR_PIN_NUMBER = 5; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); Loaded += Page_Loaded; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 페이지 로드시 처리하기 - Page_Loaded(sender, e) /// <summary> /// 페이지 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void Page_Loaded(object sender, RoutedEventArgs e) { await InitializeGPIO(); } #endregion #region GPIO 핀 값 변경시 처리하기 - gpioPin_ValueChanged(sender, e) /// <summary> /// GPIO 핀 값 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void gpioPin_ValueChanged(GpioPin sender, GpioPinValueChangedEventArgs e) { if(e.Edge == GpioPinEdge.RisingEdge) { IAsyncAction task = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { this.messageTextBlock.Text = "Motion detected!"; }); } if(e.Edge == GpioPinEdge.FallingEdge) { IAsyncAction task = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { this.messageTextBlock.Text = ""; }); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region GPIO 초기화 하기 - InitializeGPIO() /// <summary> /// GPIO 초기화 하기 /// </summary> private async Task InitializeGPIO() { this.gpioController = GpioController.GetDefault(); if(this.gpioController == null) { this.gpioPin = null; return; } this.gpioPin = gpioController.OpenPin(PIR_PIN_NUMBER); if(this.gpioPin.IsDriveModeSupported(GpioPinDriveMode.InputPullUp)) { this.gpioPin.SetDriveMode(GpioPinDriveMode.InputPullUp); } else { this.gpioPin.SetDriveMode(GpioPinDriveMode.Input); } this.messageTextBlock.Text = "PIR 초기화..."; await Task.Delay(10000); this.messageTextBlock.Text = string.Empty; this.gpioPin.ValueChanged += gpioPin_ValueChanged; } #endregion } } |
