Window1.xaml

@@ -37,8 +37,8 @@
                     <Label Content="频率:"/>
                     <RadioButton x:Name="rb50Hz" Content="50 Hz" GroupName="Freq" IsChecked="True" Margin="5,0,15,0"/>
                     <RadioButton x:Name="rb60Hz" Content="60 Hz" GroupName="Freq"/>
-                    <Label Content="      设定电流 (A):" Margin="20,0,0,0"/>
+                    <Label Content="设定电流 (A):" Margin="20,0,0,0"/>
-                    <TextBox x:Name="txtSetCurrent" Text="0.65" Width="80" TextAlignment="Right"/>
+                    <TextBox x:Name="txtSetCurrent" Text="0.650" Width="80" TextAlignment="Center"/>
                     <Label Content="A"/>
                     <Button x:Name="btnSet" Content="直接设定" Click="BtnSet_Click" Width="80" Margin="10,0,0,0"/>
                     <Button x:Name="btnStop" Content="禁止输出" Click="BtnStop_Click" Width="80" Margin="5,0,0,0"/>
@@ -47,17 +47,7 @@
             </StackPanel>
         </GroupBox>
 
-        <!-- 反馈显示 -->
+
-        <GroupBox Header="实际回采 (软件滑动平均滤波)" Grid.Row="2" Margin="5">
-            <Grid>
-                <Grid.ColumnDefinitions>
-                    <ColumnDefinition Width="Auto"/>
-                    <ColumnDefinition Width="*"/>
-                </Grid.ColumnDefinitions>
-                <Label Content="当前实际电流:" Grid.Column="0" FontWeight="Bold"/>
-                <TextBox x:Name="txtActualCurrent" Grid.Column="1" Text="0.000" IsReadOnly="True" FontSize="20" FontWeight="Bold" TextAlignment="Center" Background="LightYellow"/>
-            </Grid>
-        </GroupBox>
 
         <!-- 日志 -->
         <GroupBox Header="通讯日志" Grid.Row="3" Margin="5">

Window1.xaml.cs

@@ -13,6 +13,8 @@ namespace ConstantCurrentControl
     {
         private SerialPort _serialPort;
         private bool _isConnected = false;
+        private DispatcherTimer _readTimer;
+        private List<byte> _receiveBuffer = new List<byte>();   // 接收缓存
 
         public Window1()
         {
@@ -24,6 +26,11 @@ namespace ConstantCurrentControl
         {
             cmbPort.ItemsSource = SerialPort.GetPortNames();
             if (cmbPort.Items.Count > 0) cmbPort.SelectedIndex = 0;
+
+            // 初始化定时器（50ms 间隔，UI 线程）
+            _readTimer = new DispatcherTimer();
+            _readTimer.Interval = TimeSpan.FromMilliseconds(50);
+            _readTimer.Tick += ReadTimer_Tick;
         }
 
         #region 串口连接
@@ -39,7 +46,7 @@ namespace ConstantCurrentControl
                 string port = cmbPort.SelectedItem.ToString();
                 int baud = int.Parse((cmbBaudrate.SelectedItem as ComboBoxItem).Content.ToString());
                 _serialPort = new SerialPort(port, baud, Parity.None, 8, StopBits.One);
-                _serialPort.ReadTimeout = 1000;   // 关键：避免永久阻塞
+                _serialPort.ReadTimeout = 100;
                 _serialPort.WriteTimeout = 1000;
                 _serialPort.Open();
 
@@ -48,7 +55,14 @@ namespace ConstantCurrentControl
                 btnDisconnect.IsEnabled = true;
                 AddLog($"已连接 {port} @ {baud} bps");
 
-                // 发送配置命令（不输出电流，只设置模式），同样异步等待但不死锁
+                // 清空接收缓存和串口缓冲区
+                _receiveBuffer.Clear();
+                _serialPort.DiscardInBuffer();
+
+                // 启动定时器读取
+                _readTimer.Start();
+
+                // 发送配置命令（不跟踪模式，byte8=0）
                 await ConfigureOptimalMode();
             }
             catch (Exception ex)
@@ -60,6 +74,7 @@ namespace ConstantCurrentControl
 
         private void BtnDisconnect_Click(object sender, RoutedEventArgs e)
         {
+            if (_readTimer != null) _readTimer.Stop();
             if (_serialPort != null && _serialPort.IsOpen)
             {
                 _serialPort.Close();
@@ -73,30 +88,62 @@ namespace ConstantCurrentControl
         }
         #endregion
 
-        #region 最优模式配置（不发电流，只设 byte6=1, byte8=1）
+        #region 定时器读取数据
-        private async Task ConfigureOptimalMode()
+        private void ReadTimer_Tick(object sender, EventArgs e)
         {
-            // 构造命令：电流 0，但强制 PC 模式和跟踪模式
+            if (!_isConnected || _serialPort == null || !_serialPort.IsOpen)
-            byte[] configCmd = new byte[12];
+                return;
-            configCmd[0] = 0xFE;
-            configCmd[1] = 0xFE;
-            configCmd[2] = 0x55;   // 识别码高
-            configCmd[3] = 0xAA;   // 识别码低
-            configCmd[4] = 0x00;   // 电流高字节 (0A)
-            configCmd[5] = 0x00;   // 电流低字节
-            configCmd[6] = 0x01;   // PC调节模式
-            configCmd[7] = 1;
-            configCmd[8] = 0;   // 开启跟踪模式
-            configCmd[9] = 0x00;
-            configCmd[10] = 0xFF;
-            configCmd[11] = 0xFF;
 
-            await SendCommandSafe(configCmd);
+            try
+            {
+                int bytesToRead = _serialPort.BytesToRead;
+                if (bytesToRead > 0)
+                {
+                    byte[] buffer = new byte[bytesToRead];
+                    _serialPort.Read(buffer, 0, bytesToRead);
+                    _receiveBuffer.AddRange(buffer);
+
+                    // 解析完整帧（12字节，以 FE FE 开头，FF FF 结尾）
+                    ParseCompleteFrames();
+                }
+            }
+            catch (Exception ex)
+            {
+                AddLog($"读取错误: {ex.Message}");
+            }
+        }
+
+        private void ParseCompleteFrames()
+        {
+            for (int i = 0; i <= _receiveBuffer.Count - 12; i++)
+            {
+                if (_receiveBuffer[i] == 0xFE && _receiveBuffer[i + 1] == 0xFE &&
+                    _receiveBuffer[i + 10] == 0xFF && _receiveBuffer[i + 11] == 0xFF)
+                {
+                    byte[] frame = _receiveBuffer.Skip(i).Take(12).ToArray();
+                    ProcessFrame(frame);
+                    // 移除已处理的帧
+                    _receiveBuffer.RemoveRange(0, i + 12);
+                    i = -1; // 重新扫描
+                }
+            }
+            // 防止缓存无限增长
+            if (_receiveBuffer.Count > 200)
+                _receiveBuffer.RemoveRange(0, _receiveBuffer.Count - 200);
+        }
+
+        private void ProcessFrame(byte[] frame)
+        {
+            // 解析电流（byte4, byte5）
+            int rawCurrent = (frame[4] << 8) | frame[5];
+            double current = rawCurrent / 1000.0;
+
+            AddLog($"回采帧: {BitConverter.ToString(frame)} 电流={current:F3}A");
         }
         #endregion
 
-        #region 安全的命令发送（异步读取，不卡UI）
+        #region 发送命令（只写，不等待读）
-        private async Task<bool> SendCommandSafe(byte[] command)
+        private async Task<bool> SendCommand(byte[] command)
         {
             if (!_isConnected || _serialPort == null || !_serialPort.IsOpen)
             {
@@ -106,53 +153,37 @@ namespace ConstantCurrentControl
 
             try
             {
-                // 清空缓冲区
-                _serialPort.DiscardInBuffer();
-                _serialPort.DiscardOutBuffer();
-
-                // 发送命令
                 await _serialPort.BaseStream.WriteAsync(command, 0, command.Length);
                 AddLog($"发送: {BitConverter.ToString(command)}");
-
+                return true;
-                // 异步读取12字节（带超时）
-                byte[] buffer = new byte[12];
-                int totalRead = 0;
-                DateTime start = DateTime.Now;
-                while (totalRead < 12 && (DateTime.Now - start).TotalMilliseconds < 1500)
-                {
-                    if (_serialPort.BytesToRead > 0)
-                    {
-                        int read = await _serialPort.BaseStream.ReadAsync(buffer, totalRead, 12 - totalRead);
-                        if (read > 0) totalRead += read;
-                    }
-                    else
-                        await Task.Delay(20);
-                }
-
-                if (totalRead == 12)
-                {
-                    AddLog($"接收: {BitConverter.ToString(buffer)}");
-                    // 解析回采电流 (byte4, byte5)
-                    int rawCurrent = (buffer[4] << 8) | buffer[5];
-                    double actualCurrent = rawCurrent / 1000.0;
-                    Dispatcher.Invoke(() => txtActualCurrent.Text = actualCurrent.ToString("F3"));
-                    return true;
-                }
-                else
-                {
-                    AddLog($"接收超时或字节数不足: {totalRead}/12");
-                    return false;
-                }
             }
             catch (Exception ex)
             {
-                AddLog($"命令发送异常: {ex.Message}");
+                AddLog($"发送失败: {ex.Message}");
                 return false;
             }
         }
+
+        private async Task ConfigureOptimalMode()
+        {
+            byte[] configCmd = new byte[12];
+            configCmd[0] = 0xFE;
+            configCmd[1] = 0xFE;
+            configCmd[2] = 0x55;
+            configCmd[3] = 0xAA;
+            configCmd[4] = 0x00;
+            configCmd[5] = 0x00;
+            configCmd[6] = 0x01;   // PC调节
+            configCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
+            configCmd[8] = 0x00;   // 不跟踪（你实测稳定）
+            configCmd[9] = 0x00;
+            configCmd[10] = 0xFF;
+            configCmd[11] = 0xFF;
+            await SendCommand(configCmd);
+        }
         #endregion
 
-        #region 设定电流（平滑可选项，但为了简洁直接发）
+        #region UI操作
         private async void BtnSet_Click(object sender, RoutedEventArgs e)
         {
             if (!_isConnected)
@@ -166,7 +197,6 @@ namespace ConstantCurrentControl
                 return;
             }
 
-            // 构造12字节电流命令
             int raw = (int)(target * 1000);
             byte cmdH = (byte)((raw >> 8) & 0xFF);
             byte cmdL = (byte)(raw & 0xFF);
@@ -178,21 +208,20 @@ namespace ConstantCurrentControl
             currentCmd[3] = 0xAA;
             currentCmd[4] = cmdH;
             currentCmd[5] = cmdL;
-            currentCmd[6] = 0x01;      // PC模式
+            currentCmd[6] = 0x01;
-            currentCmd[7] = 1;
+            currentCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
-            currentCmd[8] = 0;      // 跟踪
+            currentCmd[8] = 0x00;   // 不跟踪
             currentCmd[9] = 0x00;
             currentCmd[10] = 0xFF;
             currentCmd[11] = 0xFF;
 
-            await SendCommandSafe(currentCmd);
+            await SendCommand(currentCmd);
             AddLog($"设定电流 = {target:F3} A");
         }
 
         private async void BtnStop_Click(object sender, RoutedEventArgs e)
         {
             if (!_isConnected) return;
-            // 发送电流0
             byte[] stopCmd = new byte[12];
             stopCmd[0] = 0xFE;
             stopCmd[1] = 0xFE;
@@ -201,12 +230,12 @@ namespace ConstantCurrentControl
             stopCmd[4] = 0x00;
             stopCmd[5] = 0x00;
             stopCmd[6] = 0x01;
-            stopCmd[7] = 1; // 50Hz
+            stopCmd[7] = rb50Hz.IsChecked == true ? (byte)1 : (byte)2;
-            stopCmd[8] = 0;
+            stopCmd[8] = 0x00;   // 不跟踪
             stopCmd[9] = 0x00;
             stopCmd[10] = 0xFF;
             stopCmd[11] = 0xFF;
-            await SendCommandSafe(stopCmd);
+            await SendCommand(stopCmd);
             AddLog("禁止输出 (0A)");
         }
 
@@ -218,6 +247,6 @@ namespace ConstantCurrentControl
                 if (lstLog.Items.Count > 50) lstLog.Items.RemoveAt(lstLog.Items.Count - 1);
             });
         }
+        #endregion
     }
 }
-#endregion