线圈的读取和解析

ModbusDemo/App.xaml.cs

@@ -1,4 +1,5 @@
-using ModbusDemo.VIew;
+using ModbusDemo.Device;
+using ModbusDemo.VIew;
 using ModbusDemo.VIewModel;
 using Prism.DryIoc;
 using Prism.Ioc;
@@ -39,6 +40,10 @@ namespace ModbusDemo
             containerRegistry.RegisterForNavigation<SettingsUC, SettingsUCViewModel>();
             //将窗口注册为全局唯一的单例
             containerRegistry.RegisterSingleton<SerialPort>();
+
+
+            //将读线圈注册
+            containerRegistry.Register<ModbusRTU>();
         }
         /// <summary>
         /// 程序打开默认是设置界面，来设置串口的各个东西

ModbusDemo/Device/IModbusRTU.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ModbusDemo.Device
+{
+    interface IModbusRTU
+    {
+        public bool[] ReadCoil(byte slaveAddress, ushort startAddress, ushort numberOfPoints);
+    }
+}

ModbusDemo/Device/ModbusRTU.cs

@@ -0,0 +1,108 @@
+using ModbusDemo.Uitls;
+using System;
+using System.Collections.Generic;
+using System.IO.Ports;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ModbusDemo.Device
+{
+    public class ModbusRTU : IModbusRTU
+    {
+        private SerialPort _serialPort;
+
+        public ModbusRTU(SerialPort serialPort)
+        {
+            _serialPort = serialPort;
+        }
+        /// <summary>
+        /// 用来发送读写线圈的指令
+        /// </summary>
+        /// <param name="slaveAddress"></param>
+        /// <param name="startAddress"></param>
+        /// <param name="numberOfPoints"></param>
+        /// <returns></returns>
+        public bool[] ReadCoil(byte slaveAddress, ushort startAddress, ushort numberOfPoints)
+        {
+
+            List<byte> sendByteList = new List<byte>();
+            //设置从站地址
+            sendByteList.Add(slaveAddress);
+            //设置功能码
+            sendByteList.Add(0x01);
+            //设置起始地址的高位和低位
+            sendByteList.Add(BitConverter.GetBytes(startAddress)[1]);
+            sendByteList.Add(BitConverter.GetBytes(startAddress)[0]);
+            //设置读取几个线圈的高位和低位
+            sendByteList.Add(BitConverter.GetBytes(numberOfPoints)[1]);
+            sendByteList.Add(BitConverter.GetBytes(numberOfPoints)[0]);
+            //获取CRC校验码
+            byte[] getCRC = sendByteList.ToArray();
+            byte[] resultCRC = CRCUitl.CalculateCRC(getCRC, getCRC.Length);
+            sendByteList.Add(resultCRC[0]);
+            sendByteList.Add(resultCRC[1]);
+
+            byte[] sendByte = sendByteList.ToArray();
+            if (_serialPort.IsOpen)
+            {
+                // 清空接收缓冲区（避免残留数据干扰）
+                _serialPort.DiscardInBuffer();
+
+                _serialPort.Write(sendByte, 0, sendByte.Length);
+                Thread.Sleep(300);
+                byte[] response = new byte[_serialPort.BytesToRead];
+                _serialPort.Read(response, 0, _serialPort.BytesToRead);
+                return Parseresponse(response,numberOfPoints);
+            }
+
+
+            return null;
+        }
+
+
+        public bool[] Parseresponse(byte[] response, ushort numberOfPoints)
+        {
+            //判断发送回来的数据是否正确
+            CheckData.CheckResponse(response);
+
+            if (!CRCUitl.ValidateCRC(response))
+            {
+                MessageBox.Show("0x14:CRC校验错误");
+                return null;
+            }
+            List<byte> responseList = new List<byte>(response);
+            //移除前两位
+            responseList.RemoveRange(0, 3);
+            //移除后两位校验码
+            responseList.RemoveRange(responseList.Count - 2, 2);
+            responseList.Reverse();
+            //数组反转之后，转为二进制字符
+            List<string> StringList = responseList.Select(m => Convert.ToString(m, 2)).ToList();
+
+            var result = "";
+
+            foreach (var item in StringList)
+            {
+                result += item.PadLeft(8, '0');
+            }
+            //先将字符串转为数组，再反转，再转为字节数组
+            char[] chars = result.ToArray().Reverse<char>().ToArray();
+            bool[] f = new bool[numberOfPoints];
+            for (int i = 0; i < numberOfPoints; i++)
+            {
+                if (chars[i] == '1')
+                {
+                    f[i] = true;
+                }
+                else
+                {
+                    f[i] = false;
+                }
+            }
+            return f;
+        }
+
+    }
+}

ModbusDemo/Uitls/CRCUitl.cs

@@ -77,5 +77,30 @@ namespace ModbusDemo.Uitls
             }
             return res;
         }
+        /// <summary>
+        /// 用来计算CRC是否合理
+        /// </summary>
+        /// <param name="fullFrame"></param>
+        /// <returns></returns>
+        public static bool ValidateCRC(byte[] fullFrame)
+        {
+            // 报文必须至少包含2个字节的CRC校验码
+            if (fullFrame.Length < 2)
+                return false;
+
+            // 计算数据部分的长度（排除最后2个CRC字节）
+            int dataLength = fullFrame.Length - 2;
+
+            // 提取报文中包含的CRC校验码（传输顺序：低字节在前，高字节在后）
+            byte receivedCrcLo = fullFrame[fullFrame.Length - 2];
+            byte receivedCrcHi = fullFrame[fullFrame.Length - 1];
+
+            // 计算数据部分的CRC（返回顺序：高字节在前，低字节在后）
+            byte[] calculatedCrc = CalculateCRC(fullFrame, dataLength);
+
+            // 比较计算出的CRC和接收到的CRC
+            return (calculatedCrc[calculatedCrc.Length - 1] == receivedCrcHi) &&
+                   (calculatedCrc[calculatedCrc.Length - 2] == receivedCrcLo);
+        }
     }
 }

ModbusDemo/Uitls/CheckData.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ModbusDemo.Uitls
+{
+    public static class CheckData
+    {
+
+        public static void CheckResponse(byte[] response)
+        {
+            // 检查数组长度是否足够
+            if (response.Length > 1)
+            {
+                byte secondByte = response[1]; // 获取第二个字节（索引为1）
+
+                // 使用掩码0xF0获取高4位，并右移4位
+                int highNibble = (secondByte & 0xF0) >> 4;
+
+                // 判断高4位是否等于8
+                if (highNibble == 8)
+                {
+                    MessageBox.Show($"数据错误：错误码为：0x{response[2]:X2}");
+                    return;
+                }
+                
+            }
+        }
+          
+    }
+}

ModbusDemo/VIew/CoilUC.xaml

@@ -1,12 +1,77 @@
-<UserControl x:Class="ModbusDemo.VIew.CoilUC"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
-             xmlns:local="clr-namespace:ModbusDemo.VIew"
-             mc:Ignorable="d" 
-             d:DesignHeight="450" d:DesignWidth="800">
+<UserControl
+    x:Class="ModbusDemo.VIew.CoilUC"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:local="clr-namespace:ModbusDemo.VIew"
+    xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+    xmlns:viewmodel="clr-namespace:ModbusDemo.VIewModel"
+    d:DataContext="{d:DesignInstance Type=viewmodel:CoilUCViewModel,
+                                     IsDesignTimeCreatable=True}"
+    d:Background="White"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    mc:Ignorable="d">
     <Grid>
-        <TextBlock Text="Coil" FontSize="60"></TextBlock>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="60">
+            </RowDefinition>
+            <RowDefinition>
+            </RowDefinition>
+            <RowDefinition>
+            </RowDefinition>
+            <RowDefinition>
+            </RowDefinition>
+        </Grid.RowDefinitions>
+        <TextBlock
+            HorizontalAlignment="Center"
+            VerticalAlignment="Center"
+            Text="{Binding SerialPortInfo}"
+            FontWeight="Black"
+            FontSize="16">
+        </TextBlock>
+        <Grid Grid.Row="1">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition>
+                </ColumnDefinition>
+                <ColumnDefinition>
+                </ColumnDefinition>
+                <ColumnDefinition>
+                </ColumnDefinition>
+                <ColumnDefinition>
+                </ColumnDefinition>
+                <ColumnDefinition>
+                </ColumnDefinition>
+            </Grid.ColumnDefinitions>
+            <StackPanel Orientation="Vertical" HorizontalAlignment="Center">
+                <TextBlock Text="从站地址" Margin="20"></TextBlock>
+                <TextBox Text="{Binding SlaveAddress}" Margin="0,-10,0,0"></TextBox>
+            </StackPanel>
+
+            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Grid.Column="1">
+                <TextBlock Text="起始地址" Margin="20"></TextBlock>
+                <TextBox Text="{Binding StartAddress}" Margin="0,-10,0,0"></TextBox>
+            </StackPanel>
+
+            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Grid.Column="2">
+                <TextBlock Text="读取位数" Margin="20"></TextBlock>
+                <TextBox Text="{Binding NumberOfPoints}" Margin="0,-10,0,0"></TextBox>
+            </StackPanel>
+
+            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Grid.Column="3">
+                <TextBlock Text="读取结果" Margin="20"></TextBlock>
+                <TextBox Text="{Binding ReadResult}" Margin="0,-10,0,0"></TextBox>
+            </StackPanel>
+            <Button
+                Grid.Column="4"
+                Width="80"
+                Height="30"
+                Command="{Binding ReadCoilCmm}"
+                materialDesign:ButtonAssist.CornerRadius="15"
+                Content="读取"
+                Style="{StaticResource MaterialDesignRaisedDarkButton}">
+            </Button>
+        </Grid>
     </Grid>
 </UserControl>

ModbusDemo/VIew/SettingsUC.xaml

@@ -43,10 +43,7 @@
                 </ColumnDefinition>
                 <ColumnDefinition>
                 </ColumnDefinition>
-                <ColumnDefinition>
-                </ColumnDefinition>
-                <ColumnDefinition>
-                </ColumnDefinition>
+
             </Grid.ColumnDefinitions>
             <!--  这是设置串口的选择  -->
             <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
@@ -127,7 +124,9 @@
                     </ComboBoxItem>
                 </ComboBox>
             </StackPanel>
+
         </Grid>
+        <!--  两个按钮的定义  -->
         <Grid Grid.Row="2">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition>

ModbusDemo/VIewModel/CoilUCViewModel.cs

@@ -1,17 +1,137 @@
-using Prism.Mvvm;
+using ModbusDemo.Device;
+using Prism.Commands;
+using Prism.Mvvm;
 using System;
 using System.Collections.Generic;
+using System.IO.Ports;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
 
 namespace ModbusDemo.VIewModel
 {
     /// <summary>
     /// 这是CoilUC的VM用来支持数据绑定
     /// </summary>
-    public class CoilUCViewModel:BindableBase
+    public class CoilUCViewModel : BindableBase
     {
+        //获取读线圈的类
+        private IModbusRTU _modbusRTU;
+        //定义读线圈的命令
+        public DelegateCommand ReadCoilCmm { get; set; }
+        //获取当前使用的串口
+        private SerialPort _serialPort;
+        //显示当前链接串口的信息
+        public string SerialPortInfo
+        {
+            get
+            {
+                return "当前链接的状态：" + "串口号：" + _serialPort.PortName + "，波特率：" + _serialPort.BaudRate
+                    + "，数据位：" + _serialPort.DataBits + "，校验位：" + _serialPort.Parity + "，停止位：" + _serialPort.StopBits;
+            }
 
+        }
+
+
+        //读取的从站id
+        private string _slaveAddress;
+
+        public string SlaveAddress
+        {
+            get { return _slaveAddress; }
+            set
+            {
+                _slaveAddress = value;
+                RaisePropertyChanged();
+            }
+        }
+
+        private string _startAddress;
+
+        //读取的起始地址
+        public string StartAddress
+        {
+            get { return _startAddress; }
+            set
+            {
+                _startAddress = value;
+                RaisePropertyChanged();
+            }
+        }
+
+        private string _numberOfPoints;
+
+        //读取的位数
+        public string NumberOfPoints
+        {
+            get { return _numberOfPoints; }
+            set
+            {
+                _numberOfPoints = value;
+                RaisePropertyChanged();
+            }
+        }
+
+        private string _readResult;
+
+        //读取的结果
+        public string ReadResult
+        {
+            get { return _readResult; }
+            set
+            {
+                _readResult = value;
+                RaisePropertyChanged();
+            }
+        }
+
+
+
+        public CoilUCViewModel()
+        {
+
+        }
+
+        public CoilUCViewModel(SerialPort serialPort, ModbusRTU modbusRTU)
+        {
+            _serialPort = serialPort;
+            ReadCoilCmm = new DelegateCommand(ReadCoil);
+            _modbusRTU = modbusRTU;
+        }
+
+        private void ReadCoil()
+        {
+
+
+            try
+            {
+                bool[] result = _modbusRTU.ReadCoil(byte.Parse(SlaveAddress),
+                                                ushort.Parse(StartAddress),
+                                                ushort.Parse(NumberOfPoints));
+
+                if(result != null)
+                {
+                    string temp = "";
+                    foreach(var item in result)
+                    {
+                        temp += item;
+                        temp += " ";
+                    }
+                    ReadResult = temp;
+                }
+                
+                
+            }
+            catch (Exception)
+            {
+
+                MessageBox.Show("参数配置错误");
+            }
+
+            
+
+
+        }
     }
 }

ModbusDemo/VIewModel/MainWindowViewModel.cs

@@ -45,10 +45,17 @@ namespace ModbusDemo.VIewModel
 
             NavigationCmm = new DelegateCommand<MenusInfo>(Navigation);
         }
-
+        /// <summary>
+        /// 视图导航
+        /// </summary>
+        /// <param name="info"></param>
         private void Navigation(MenusInfo info)
         {
-            _regionManager.Regions["ModbusRegion"].RequestNavigate(info.ViewName);
+            if(info != null)
+            {
+                _regionManager.Regions["ModbusRegion"].RequestNavigate(info.ViewName);
+            }
+            
         }
         /// <summary>
         /// 初始化左下拉框

ModbusDemo/VIewModel/SettingsUCViewModel.cs

@@ -7,6 +7,7 @@ using System.IO.Ports;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
 
 namespace ModbusDemo.VIewModel
 {
@@ -115,42 +116,25 @@ namespace ModbusDemo.VIewModel
             //todo,做数据的判空处理
             if (!_serialPort.IsOpen)
             {
-                _serialPort.PortName = GetComboBoxItemValue(this.PortName);
-                _serialPort.BaudRate = int.Parse(GetComboBoxItemValue(this.BaudRate));
-                _serialPort.Parity = this.Parity;
-                _serialPort.StopBits = this.StopBits;
-                _serialPort.DataBits = int.Parse(GetComboBoxItemValue(this.DataBits));
-                _serialPort.Open();
+               
+
+                try
+                {
+                    _serialPort.PortName = GetComboBoxItemValue(this.PortName);
+                    _serialPort.BaudRate = int.Parse(GetComboBoxItemValue(this.BaudRate));
+                    _serialPort.Parity = this.Parity;
+                    _serialPort.StopBits = this.StopBits;
+                    _serialPort.DataBits = int.Parse(GetComboBoxItemValue(this.DataBits));
+                    _serialPort.Open();
+                    MessageBox.Show("串口链接成功");
+                }
+                catch (Exception)
+                {
+
+                    MessageBox.Show("串口已经链接，请先断开链接在尝试");
+                }
             }
             
-
-
-
-
-            List<byte> bytes = new List<byte>();
-            bytes.Add(0x01);
-            bytes.Add(0x05);
-
-
-            bytes.Add(BitConverter.GetBytes(301)[1]);
-            bytes.Add(BitConverter.GetBytes(301)[0]);
-
-
-            bytes.Add(0xFF);
-            bytes.Add(0x00);
-
-            byte[] bytes1 = CRCUitl.CalculateCRC(bytes.ToArray(), bytes.Count);
-
-            bytes.Add(bytes1[0]);
-            bytes.Add(bytes1[1]);
-            byte[] bytes2 = bytes.ToArray();
-            System.Threading.Thread.Sleep(200); // 等待200毫秒
-
-            byte[] response = new byte[_serialPort.BytesToRead];
-            //int bytesRead = serialPort.Read(response, 0, response.Length);
-
-            //string hexResponse = BitConverter.ToString(response, 0, bytesRead);
-            _serialPort.Write(bytes2, 0, bytes2.Length);
         }
         /// <summary>
         /// 处理下拉框的选择信息