■ RGB LED 모듈을 사용하는 방법을 보여준다.
▶ 부품 내역
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──────────────── 구분 모델 수량 비고 ─────── ── ── ── RGB LED Module 1 ──────────────── |
[회로 구성도]
▶ MainPage.xaml
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<Page x:Class="TestApplication.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:TestApplication" FontFamily="나눔고딕코딩" FontSize="16" mc:Ignorable="d"> <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center"> <Ellipse x:Name="ledEllipse" Width="100" Height="100" Margin="10" Fill="LightGray" Stroke="White" /> <TextBlock x:Name="delayTextBlock" Margin="10" TextAlignment="Center" FontSize="24" Text="500ms" /> <Slider x:Name="delaySlider" Margin="10" Width="200" Maximum="1000" LargeChange="100" SmallChange="10" StepFrequency="10" Value="500" /> <TextBlock x:Name="messageTextBlock" Margin="10 50 10 10" TextAlignment="Center" FontSize="24" Text="GPIO 초기화 대기중..." /> </StackPanel> </Grid> </Page> |
▶ MainPage.xaml.cs
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using System; using System.Collections.Generic; using System.Diagnostics; using Windows.Devices.Gpio; using Windows.Security.ExchangeActiveSyncProvisioning; using Windows.UI; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Controls.Primitives; using Windows.UI.Xaml.Media; namespace TestApplication { /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Enumeration ////////////////////////////////////////////////////////////////////////////////////////// Public #region 장치 모델 - DeviceModel /// <summary> /// 장치 모델 /// </summary> public enum DeviceModel { /// <summary> /// 라즈베리 파이 /// </summary> RaspberryPi, /// <summary> /// 미노우 보드 맥스 /// </summary> MinnowBoardMax, /// <summary> /// 드래곤 보드 410 /// </summary> DragonBoard410, /// <summary> /// 알 수 없슴 /// </summary> Unknown }; #endregion #region LED 상태 - LEDStatus /// <summary> /// LED 상태 /// </summary> public enum LEDStatus { /// <summary> /// 빨강색 /// </summary> Red, /// <summary> /// 녹색 /// </summary> Green, /// <summary> /// 파랑색 /// </summary> Blue }; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 빨강색 LED 핀 번호 /// </summary> private const int RED_LED_PIN_NUMBER = 5; /// <summary> /// 녹색 LED 핀 번호 /// </summary> private const int GREEN_LED_PIN_NUMBER = 13; /// <summary> /// 파랑색 LED 핀 번호 /// </summary> private const int BLUE_LED_PIN_NUMBER = 6; /// <summary> /// 빨강색 브러시 /// </summary> private SolidColorBrush redBrush = null; /// <summary> /// 녹색 브러시 /// </summary> private SolidColorBrush greenBrush = null; /// <summary> /// 파랑색 브러시 /// </summary> private SolidColorBrush blueBrush = null; /// <summary> /// LED 상태 /// </summary> private LEDStatus ledStatus; /// <summary> /// 빨강색 GPIO 핀 /// </summary> private GpioPin redGpioPin; /// <summary> /// 녹색 GPIO 핀 /// </summary> private GpioPin greenGpioPin; /// <summary> /// 파랑색 GPIO 핀 /// </summary> private GpioPin blueGpioPin; /// <summary> /// 타이머 /// </summary> private DispatcherTimer timer; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.redBrush = new SolidColorBrush(Colors.Red ); this.greenBrush = new SolidColorBrush(Colors.Green); this.blueBrush = new SolidColorBrush(Colors.Blue ); Loaded += Page_Loaded; this.delaySlider.ValueChanged += delaySlider_ValueChanged; } #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 void Page_Loaded(object sender, RoutedEventArgs e) { GpioController gpioController = GpioController.GetDefault(); if(gpioController == null) { this.messageTextBlock.Text = "이 장치에 GPIO 컨트롤러가 없습니다.."; return; } DeviceModel deviceModel = GetDeviceModel(); if(deviceModel == DeviceModel.RaspberryPi) { this.redGpioPin = gpioController.OpenPin(RED_LED_PIN_NUMBER ); this.greenGpioPin = gpioController.OpenPin(GREEN_LED_PIN_NUMBER); this.blueGpioPin = gpioController.OpenPin(BLUE_LED_PIN_NUMBER ); } else { List<GpioPin> gpioPinList = new List<GpioPin>(3); for(int i = 0; i < gpioController.PinCount; i++) { switch(deviceModel) { case DeviceModel.DragonBoard410 : { if(i == 21 || i == 120) { continue; } break; } } GpioPin gpioPin; GpioOpenStatus gpioOpenStatus; if(gpioController.TryOpenPin(i, GpioSharingMode.Exclusive, out gpioPin, out gpioOpenStatus)) { gpioPinList.Add(gpioPin); if(gpioPinList.Count == 3) { break; } } } if(gpioPinList.Count != 3) { this.messageTextBlock.Text = "3개의 이용 가능한 핀들을 찾을 수 없습니다. 이 샘플은 3개의 GPIO 핀들이 필요합니다."; return; } this.redGpioPin = gpioPinList[0]; this.greenGpioPin = gpioPinList[1]; this.blueGpioPin = gpioPinList[2]; } this.redGpioPin.Write(GpioPinValue.High); this.redGpioPin.SetDriveMode(GpioPinDriveMode.Output); this.greenGpioPin.Write(GpioPinValue.High); this.greenGpioPin.SetDriveMode(GpioPinDriveMode.Output); this.blueGpioPin.Write(GpioPinValue.High); this.blueGpioPin.SetDriveMode(GpioPinDriveMode.Output); this.messageTextBlock.Text = string.Format ( "빨강색 핀 = {0}, 녹색 핀 = {1}, 파랑색 핀 = {2}", this.redGpioPin.PinNumber, this.greenGpioPin.PinNumber, this.blueGpioPin.PinNumber ); this.timer = new DispatcherTimer(); this.timer.Interval = TimeSpan.FromMilliseconds(500); this.timer.Tick += timer_Tick; this.timer.Start(); } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, object e) { FlipLED(); } #endregion #region 지연 슬라이더 값 변경시 처리하기 - delaySlider_ValueChanged(sender, e) /// <summary> /// 지연 슬라이더 값 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void delaySlider_ValueChanged(object sender, RangeBaseValueChangedEventArgs e) { if(this.timer == null) { return; } if(e.NewValue == this.delaySlider.Minimum) { this.delayTextBlock.Text = "Stopped"; this.timer.Stop(); TurnOffLED(); } else { this.delayTextBlock.Text = e.NewValue + "ms"; this.timer.Interval = TimeSpan.FromMilliseconds(e.NewValue); this.timer.Start(); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 장치 모델 구하기 - GetDeviceModel() /// <summary> /// 장치 모델 구하기 /// </summary> /// <returns>장치 모델</returns> private DeviceModel GetDeviceModel() { EasClientDeviceInformation easClientDeviceInformation = new EasClientDeviceInformation(); if(easClientDeviceInformation.SystemProductName.IndexOf("Raspberry", StringComparison.OrdinalIgnoreCase) >= 0) { return DeviceModel.RaspberryPi; } else if(easClientDeviceInformation.SystemProductName.IndexOf("MinnowBoard", StringComparison.OrdinalIgnoreCase) >= 0) { return DeviceModel.MinnowBoardMax; } else if(easClientDeviceInformation.SystemProductName == "SBC") { return DeviceModel.DragonBoard410; } else { return DeviceModel.Unknown; } } #endregion #region LED 깜박이기 - FlipLED() /// <summary> /// LED 깜박이기 /// </summary> private void FlipLED() { Debug.Assert(this.redGpioPin != null && this.blueGpioPin != null && this.greenGpioPin != null); switch(this.ledStatus) { case LEDStatus.Red : { this.redGpioPin.Write (GpioPinValue.High); this.blueGpioPin.Write (GpioPinValue.Low ); this.greenGpioPin.Write(GpioPinValue.Low ); this.ledEllipse.Fill = this.redBrush; this.ledStatus = LEDStatus.Green; // 다음 상태를 설정한다. break; } case LEDStatus.Green : { this.redGpioPin.Write (GpioPinValue.Low ); this.greenGpioPin.Write(GpioPinValue.High); this.blueGpioPin.Write (GpioPinValue.Low ); this.ledEllipse.Fill = this.greenBrush; this.ledStatus = LEDStatus.Blue; // 다음 상태를 설정한다. break; } case LEDStatus.Blue : { this.redGpioPin.Write (GpioPinValue.Low ); this.greenGpioPin.Write(GpioPinValue.Low ); this.blueGpioPin.Write (GpioPinValue.High); this.ledEllipse.Fill = this.blueBrush; this.ledStatus = LEDStatus.Red; // 다음 상태를 설정한다. break; } } } #endregion #region LED 끄기 - TurnOffLED() /// <summary> /// LED 끄기 /// </summary> private void TurnOffLED() { this.redGpioPin.Write (GpioPinValue.Low); this.greenGpioPin.Write(GpioPinValue.Low); this.blueGpioPin.Write (GpioPinValue.Low); } #endregion } } |
