更新

CSI-H238M/CSI-H238M/ViewModels/ViewModel.cs

@@ -39,6 +39,7 @@ namespace COFTester.ViewModels
         private bool _showAllCurves = true;
         private int _testCounter = 0;
         private bool _disposed = false;
+        private string _selectedDirection = ""; // 选中的方向：Up/Down/Right/Left
 
         public MainViewModel(IDataAcquisitionService daqService, DataProcessingService processingService, AppConfig config)
         {
@@ -604,17 +605,33 @@ namespace COFTester.ViewModels
                 return;
             }
 
+            if (string.IsNullOrEmpty(_selectedDirection))
+            {
+                StatusMessage = "请先选择测试方向";
+                MessageBox.Show("请先选择测试方向（上升/下降/向右/向左）", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                return;
+            }
+
             _realTimePoints.Clear();
             OnPropertyChanged(nameof(DataPointsCount));
             LatestResult = null;
             IsTesting = true;
-            StatusMessage = Lang.Testing;
+            StatusMessage = $"开始测试 - {_selectedDirection}方向";
             UpdateScottPlot();
+            
+            // 向选定方向的寄存器写入1，开始测试
+            _daqService.StartDirectionTest(_selectedDirection);
             _daqService.StartAcquisition(Parameters);
         }
 
         private void StopTest()
         {
+            if (!string.IsNullOrEmpty(_selectedDirection))
+            {
+                // 向选定方向的寄存器写入0，停止测试
+                _daqService.StopDirectionTest(_selectedDirection);
+            }
+            
             _daqService.StopAcquisition();
             IsTesting = false;
             StatusMessage = Lang.TestStopped;
@@ -778,6 +795,36 @@ namespace COFTester.ViewModels
             }
         }
         
+        /// <summary>
+        /// 选择测试方向
+        /// </summary>
+        public void SelectDirection(string direction)
+        {
+            if (_isTesting)
+            {
+                StatusMessage = "测试进行中，无法更改方向";
+                return;
+            }
+            
+            _selectedDirection = direction;
+            string directionText = direction switch
+            {
+                "Up" => "上升",
+                "Down" => "下降",
+                "Right" => "向右",
+                "Left" => "向左",
+                _ => direction
+            };
+            StatusMessage = $"已选择方向: {directionText}";
+            OnPropertyChanged(nameof(SelectedDirection));
+            System.Diagnostics.Debug.WriteLine($"[ViewModel] 选择方向: {direction}");
+        }
+        
+        /// <summary>
+        /// 当前选中的方向
+        /// </summary>
+        public string SelectedDirection => _selectedDirection;
+        
         /// <summary>
         /// 添加曲线到图表
         /// </summary>

CSI-H238M/CSI-H238M/Views/TestPage.xaml

@@ -186,27 +186,71 @@
             <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
                 <!-- 向左按钮 -->
                 <Button x:Name="BtnLeft" Content="{Binding Lang.DirectionLeft}" 
-                        Height="70" Width="100" Background="#E67E22" Foreground="White" 
+                        Height="70" Width="100" 
                         FontSize="16" FontWeight="Bold" BorderThickness="0" 
-                        Cursor="Hand" Margin="5" Style="{StaticResource IndustrialButtonStyle}"/>
+                        Cursor="Hand" Margin="5">
+                    <Button.Style>
+                        <Style TargetType="Button" BasedOn="{StaticResource IndustrialButtonStyle}">
+                            <Setter Property="Background" Value="#E67E22"/>
+                            <Style.Triggers>
+                                <DataTrigger Binding="{Binding SelectedDirection}" Value="Left">
+                                    <Setter Property="Background" Value="#27AE60"/>
+                                </DataTrigger>
+                            </Style.Triggers>
+                        </Style>
+                    </Button.Style>
+                </Button>
                 
                 <!-- 向右按钮 -->
                 <Button x:Name="BtnRight" Content="{Binding Lang.DirectionRight}" 
-                        Height="70" Width="100" Background="#E67E22" Foreground="White" 
+                        Height="70" Width="100" 
                         FontSize="16" FontWeight="Bold" BorderThickness="0" 
-                        Cursor="Hand" Margin="5" Style="{StaticResource IndustrialButtonStyle}"/>
+                        Cursor="Hand" Margin="5">
+                    <Button.Style>
+                        <Style TargetType="Button" BasedOn="{StaticResource IndustrialButtonStyle}">
+                            <Setter Property="Background" Value="#E67E22"/>
+                            <Style.Triggers>
+                                <DataTrigger Binding="{Binding SelectedDirection}" Value="Right">
+                                    <Setter Property="Background" Value="#27AE60"/>
+                                </DataTrigger>
+                            </Style.Triggers>
+                        </Style>
+                    </Button.Style>
+                </Button>
                 
                 <!-- 上升按钮 -->
                 <Button x:Name="BtnUp" Content="{Binding Lang.DirectionUp}" 
-                        Height="70" Width="100" Background="#E67E22" Foreground="White" 
+                        Height="70" Width="100" 
                         FontSize="16" FontWeight="Bold" BorderThickness="0" 
-                        Cursor="Hand" Margin="5" Style="{StaticResource IndustrialButtonStyle}"/>
+                        Cursor="Hand" Margin="5">
+                    <Button.Style>
+                        <Style TargetType="Button" BasedOn="{StaticResource IndustrialButtonStyle}">
+                            <Setter Property="Background" Value="#E67E22"/>
+                            <Style.Triggers>
+                                <DataTrigger Binding="{Binding SelectedDirection}" Value="Up">
+                                    <Setter Property="Background" Value="#27AE60"/>
+                                </DataTrigger>
+                            </Style.Triggers>
+                        </Style>
+                    </Button.Style>
+                </Button>
                 
                 <!-- 下降按钮 -->
                 <Button x:Name="BtnDown" Content="{Binding Lang.DirectionDown}" 
-                        Height="70" Width="100" Background="#E67E22" Foreground="White" 
+                        Height="70" Width="100" 
                         FontSize="16" FontWeight="Bold" BorderThickness="0" 
-                        Cursor="Hand" Margin="5" Style="{StaticResource IndustrialButtonStyle}"/>
+                        Cursor="Hand" Margin="5">
+                    <Button.Style>
+                        <Style TargetType="Button" BasedOn="{StaticResource IndustrialButtonStyle}">
+                            <Setter Property="Background" Value="#E67E22"/>
+                            <Style.Triggers>
+                                <DataTrigger Binding="{Binding SelectedDirection}" Value="Down">
+                                    <Setter Property="Background" Value="#27AE60"/>
+                                </DataTrigger>
+                            </Style.Triggers>
+                        </Style>
+                    </Button.Style>
+                </Button>
                 
                 <!-- 分隔线 -->
                 <Separator Width="2" Margin="10,10" Background="#BDC3C7"/>

CSI-H238M/CSI-H238M/Views/TestPage.xaml.cs

@@ -12,7 +12,13 @@ namespace COFTester.Views
         {
             InitializeComponent();
             
-            // 绑定方向控制按钮事件
+            // 绑定方向选择按钮事件（单击选择方向）
+            BtnUp.Click += (s, e) => SelectDirection("Up");
+            BtnDown.Click += (s, e) => SelectDirection("Down");
+            BtnRight.Click += (s, e) => SelectDirection("Right");
+            BtnLeft.Click += (s, e) => SelectDirection("Left");
+            
+            // 绑定方向控制按钮事件（长按手动控制）
             BtnUp.PreviewMouseDown += (s, e) => OnDirectionButtonPressed("Up");
             BtnUp.PreviewMouseUp += (s, e) => OnDirectionButtonReleased("Up");
             BtnUp.MouseLeave += (s, e) => OnDirectionButtonReleased("Up");
@@ -37,6 +43,11 @@ namespace COFTester.Views
             viewModel.SetPlot(FrictionPlot);
         }
 
+        private void SelectDirection(string direction)
+        {
+            _viewModel?.SelectDirection(direction);
+        }
+
         private void OnDirectionButtonPressed(string direction)
         {
             _viewModel?.OnDirectionControl(direction, true);