Modbus V2

csharp/Lib/Protocols/Modbus/Channels/RemoteSerialChannel.cs

@@ -129,8 +129,8 @@ public class RemoteSerialChannel : ConnectionChannel<TcpChannel>
                                 String tty,
                                  Int32 baudRate,
                                 Parity parity,
-                                 Int32 stopBits,
+                                 Int32 dataBits,
-                                 Int32 dataBits) 
+                                 Int32 stopBits) 
     {
         const Int32 port = 6855;
         
@@ -145,7 +145,10 @@ public class RemoteSerialChannel : ConnectionChannel<TcpChannel>
         var socat = $"socat TCP-LISTEN:{port},nodelay {tty},raw";
 
         //var script = $"-n -o RemoteCommand='{stopTty}; {configureTty} && {socat} ; {startTty} ; {KillTasks}'";
-        var script = $"{stopTty}; {configureTty} && {socat} ; {startTty} ; {KillTasks}";
+        //var script = $"{stopTty}; {configureTty} && {socat} ; {startTty} ; {KillTasks}";
+        
+        //var script = $"{configureTty} && {socat} ; {KillTasks}";
+        var script = $"{configureTty} && {socat}";
         
         _Command = host.Command.AppendArgument(script);
 
@@ -179,9 +182,9 @@ public class RemoteSerialChannel : ConnectionChannel<TcpChannel>
 
     protected override TcpChannel Open()
     {
-        _CommandTask ??= _Command.ExecuteAsync(_CancellationTokenSource.Token);
+        //_CommandTask ??= _Command.ExecuteAsync(_CancellationTokenSource.Token);
         
-        Thread.Sleep(2000); // wait until socat is ready
+        //Thread.Sleep(2000); // wait until socat is ready
         return _TcpChannel;
     }
 

csharp/Lib/Protocols/Modbus/Channels/SerialPortChannel.cs

@@ -1,5 +1,4 @@
 using System.IO.Ports;
-using CliWrap;
 using InnovEnergy.Lib.Protocols.Modbus.Protocol;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Channels;
@@ -16,10 +15,7 @@ public class SerialPortChannel : ConnectionChannel<SerialPort>
                             Boolean closeAfterSuccessfulRead = false,
                             Boolean closeAfterSuccessfulWrite = false) 
         :
-        base(
+        base(closeAfterSuccessfulRead, closeAfterSuccessfulWrite)
-            closeAfterSuccessfulRead,
-            closeAfterSuccessfulWrite
-        )
     {
         var sb = stopBits switch
         {

csharp/Lib/Protocols/Modbus/Modbus.csproj

@@ -1,18 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <Configurations>Debug;Release;Release-Server</Configurations>
-    <Platforms>AnyCPU;linux-arm</Platforms>
-  </PropertyGroup>
     <Import Project="../../InnovEnergy.Lib.props"/>
    
-  <PropertyGroup>     
-    <IsTrimmable>false</IsTrimmable>
-  </PropertyGroup>
-          
     <ItemGroup>
         <ProjectReference Include="../../Utils/Utils.csproj"/>
+
+        <ProjectReference Include="../../SrcGen/SrcGen.csproj"
+                          OutputItemType="Analyzer"
+                          ReferenceOutputAssembly="false"/>
     </ItemGroup>
 
+
     <ItemGroup>
         <PackageReference Include="System.IO.Ports" Version="7.0.0"/>
     </ItemGroup>

csharp/Lib/Protocols/Modbus/Protocol/Frames/Accessors/Endian.cs

@@ -2,6 +2,19 @@ namespace InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
 
 public enum Endian
 {
-    Little,
+    Undefined = 0,
-    Big
+    Little    = 1,
+    Big       = 2,
+    Default   = 1,
+}
+
+
+public static class EndianCombinator
+{
+    public static Endian InheritFrom(this Endian child, Endian parent)
+    {
+        return child == Endian.Undefined
+             ? parent
+             : child;
+    }
 }

csharp/Lib/Protocols/Modbus/Protocol/Frames/Accessors/MbData.cs

@@ -7,6 +7,7 @@ using Float64 = Double;
 
 // switch exhaustion
 #pragma warning disable CS8524
+#pragma warning disable CS8509
 
 public struct MbData 
 {
@@ -18,24 +19,24 @@ public struct MbData
     private readonly Endian             _Endian;
     private readonly UInt16             _StartAddress;
 
-    public static MbData Registers(UInt16 startAddress, UInt16 nRegisters)
+    public static MbData Registers(UInt16 startAddress, UInt16 nRegisters, Endian endian = Endian.Default)
     {
         if (nRegisters > Constants.MaxRegs)
             throw new ArgumentException(nameof(nRegisters));
 
         var nBytes = nRegisters * 2;
         var data = new Byte[nBytes];
-        return new MbData(data, startAddress, Endian.Big); // endian has no influence on coils 
+        return new MbData(data, startAddress, endian); 
     }
 
-    public static MbData Coils(UInt16 startAddress, UInt16 nCoils)
+    public static MbData Coils(UInt16 startAddress, UInt16 nCoils, Endian endian = Endian.Default)
     {
         if (nCoils > Constants.MaxCoils)
             throw new ArgumentException(nameof(nCoils));
         
         var nBytes = Math.Ceiling(nCoils / 8.0).ConvertTo<UInt16>();
         var data = new Byte[nBytes];
-        return new MbData(data, startAddress, Endian.Big); // endian has no influence on coils 
+        return new MbData(data, startAddress, endian); // endian has no influence on coils 
     }
     
     internal MbData(ArraySegment<Byte> data, UInt16 startAddress, Endian endian) 
@@ -48,6 +49,11 @@ public struct MbData
         _Data         = data;
     }
 
+    public MbData WithEndian(Endian endian)
+    {
+        return new MbData(_Data, _StartAddress, endian.InheritFrom(_Endian));
+    }
+    
     #region Coils
     
     public IReadOnlyList<Boolean> GetCoils()
@@ -78,7 +84,12 @@ public struct MbData
         var byteIndex = index / 8;
         var bitIndex  = index % 8;
 
-        _Data[byteIndex] = (Byte)(_Data[byteIndex] | (1 << bitIndex)) ;
+        var mask = 1 << bitIndex;  
+        
+        if (value)
+            _Data[byteIndex] |= (Byte)mask;
+        else
+            _Data[byteIndex] &= (Byte)~mask;
     }
 
     #endregion Coils
@@ -119,6 +130,7 @@ public struct MbData
         var hi = (UInt32) GetUInt16(address);
         var lo = (UInt32) GetUInt16(++address);
 
+
         return _Endian switch
         {
             Endian.Big     => hi << 16 | lo,
@@ -225,6 +237,7 @@ public struct MbData
         
         return Enumerable
               .Range(0, nRegisters)
+              .Select(r => r * 2)
               .Select(GetRegister)
               .ToArray(nRegisters);
     }

csharp/Lib/Protocols/Modbus/Protocol/Frames/Replies/ReadHoldingRegistersResponseFrame.cs

@@ -30,11 +30,11 @@ internal class ReadHoldingRegistersResponseFrame : ModbusFrame
 
     private ReadHoldingRegistersResponseFrame(ArraySegment<Byte> data) : base(data)
     {
+        AssertFunctionCode(ReadHoldingRegisters);
+        
         if (data.Count < MinSize)
             throw new ArgumentOutOfRangeException($"Expecting an array of size {MinSize} or more", nameof(data));
 
-        AssertFunctionCode(ReadHoldingRegisters);
-
         var expectedSize = ByteCount + MinSize;
         if (data.Count != expectedSize)
             throw new ArgumentOutOfRangeException($"Expecting an array of size {expectedSize}", nameof(data));

csharp/Lib/Protocols/Modbus/Protocol/Frames/Replies/ReadInputRegistersResponseFrame.cs

@@ -31,11 +31,11 @@ internal class ReadInputRegistersResponseFrame : ModbusFrame
 
     private ReadInputRegistersResponseFrame(ArraySegment<Byte> data) : base(data)
     {
+        AssertFunctionCode(ReadInputRegisters);
+        
         if (data.Count < MinSize)
             throw new ArgumentException($"Expecting an array of size {MinSize} or more", nameof(data));
 
-        AssertFunctionCode(ReadInputRegisters);
-
         var expectedSize = ByteCount + MinSize;
         if (data.Count != expectedSize)
             throw new ArgumentException($"Expecting an array of size {expectedSize}", nameof(data));

csharp/Lib/Protocols/Modbus/Protocol/Frames/Replies/ReadWriteRegistersCommandFrame.cs

@@ -32,11 +32,11 @@ internal class ReadWriteRegistersResponseFrame : ModbusFrame
 
     private ReadWriteRegistersResponseFrame(ArraySegment<Byte> data) : base(data)
     {
+        AssertFunctionCode(ReadWriteMultipleRegisters);
+        
         if (data.Count < MinSize)
             throw new ArgumentException($"Expecting an array of size {MinSize} or more", nameof(data));
 
-        AssertFunctionCode(ReadWriteMultipleRegisters);
-
         var expectedSize = ByteCount + MinSize;
         if (data.Count != expectedSize)
             throw new ArgumentException($"Expecting an array of size {expectedSize}", nameof(data));

csharp/Lib/Protocols/Modbus/Protocol/Frames/Replies/WriteCoilsResponseFrame.cs

@@ -1,4 +1,5 @@
 using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
+using InnovEnergy.Lib.Utils;
 using static InnovEnergy.Lib.Protocols.Modbus.Protocol.FunctionCode;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Replies;
@@ -24,13 +25,12 @@ public class WriteCoilsResponseFrame : ModbusFrame
     private WriteCoilsResponseFrame(Byte[] data) : this (new ArraySegment<Byte>(data) )
     { }
 
-
     private WriteCoilsResponseFrame(ArraySegment<Byte> data) : base(data)
     {
+        AssertFunctionCode(WriteMultipleCoils);
+        
         if (data.Count != Size)
             throw new ArgumentException($"Expecting an array of size {Size}", nameof(data));
-
-        AssertFunctionCode(WriteMultipleCoils);
     }
 
     public static WriteCoilsResponseFrame Parse(Byte[] data) => new WriteCoilsResponseFrame(data);

csharp/Lib/Protocols/Modbus/Protocol/Frames/Replies/WriteRegistersResponseFrame.cs

@@ -27,10 +27,10 @@ internal class WriteRegistersResponseFrame : ModbusFrame
 
     private WriteRegistersResponseFrame(ArraySegment<Byte> data) : base(data)
     {
+        AssertFunctionCode(WriteMultipleRegisters);
+        
         if (data.Count != Size)
             throw new ArgumentException($"Expecting an array of size {Size}", nameof(data));
-
-        AssertFunctionCode(WriteMultipleRegisters);
     }
 
     public static WriteRegistersResponseFrame Parse(ArraySegment<Byte> data) => new WriteRegistersResponseFrame(data);

csharp/Lib/Protocols/Modbus/Protocol/ModbusKind.cs

@@ -0,0 +1,10 @@
+namespace InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+[Flags]
+public enum ModbusKind : byte
+{
+    HoldingRegister,
+    InputRegister,
+    Coil,
+    DiscreteInput,
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/AddressOffset.cs

@@ -4,8 +4,8 @@ using static System.AttributeTargets;
 namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
 
 [AttributeUsage(Class | Struct)]
-public class AddressOffsetAttribute : Attribute
+public class AddressOffset : Attribute
 {
     public Int32 Offset { get; }
-    public AddressOffsetAttribute(Int32 offset) => Offset = offset;
+    public AddressOffset(Int32 offset) => Offset = offset;
 }

csharp/Lib/Protocols/Modbus/Reflection/Attributes/BigEndian.cs

@@ -0,0 +1,12 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
+using static System.AttributeTargets;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+[AttributeUsage(Class | Struct | Property | Field)]
+public class BigEndian : EndianAttribute
+{
+    public BigEndian() : base(Endian.Big)
+    {
+    }
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/Coil.cs

@@ -0,0 +1,10 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+public class Coil : ModbusBoolean
+{
+    public Coil(UInt16 address) : base(address, ModbusKind.Coil)
+    {
+    }
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/CoilAttribute.cs

@@ -1,6 +0,0 @@
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public class CoilAttribute : ModbusBooleanAttribute
-{
-    public CoilAttribute(UInt16 address) : base(address) { }
-}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/DiscreteInput.cs

@@ -0,0 +1,8 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+public class DiscreteInput : ModbusBoolean
+{
+    public DiscreteInput(UInt16 address) : base(address, ModbusKind.DiscreteInput) { }
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/DiscreteInputAttribute.cs

@@ -1,7 +0,0 @@
-
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public class DiscreteInputAttribute : ModbusBooleanAttribute
-{
-    public DiscreteInputAttribute(UInt16 address) : base(address) { }
-}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/EndianAttribute.cs

@@ -0,0 +1,11 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
+using static System.AttributeTargets;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+[AttributeUsage(Class | Struct | Property | Field)]
+public class EndianAttribute : Attribute
+{
+    public EndianAttribute(Endian endian) => Endian = endian;
+    public Endian Endian { get; }
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/HoldingRegister.cs

@@ -0,0 +1,27 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+
+public class HoldingRegister : ModbusRegister
+{
+    private static readonly Type DefaultModbusType = typeof(UInt16);
+
+    public HoldingRegister(UInt16 address) : this(address, DefaultModbusType)
+    {
+    }
+
+    public HoldingRegister(UInt16 address, Type modbusType) : base(address, modbusType, ModbusKind.HoldingRegister)
+    {
+    }    
+}
+
+
+public class HoldingRegister<T> : HoldingRegister where T : IConvertible
+{
+    public HoldingRegister(UInt16 address) : base(address, typeof(T))
+    {
+    }    
+}
+
+

csharp/Lib/Protocols/Modbus/Reflection/Attributes/HoldingRegisterAttribute.cs

@@ -1,8 +0,0 @@
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public class HoldingRegisterAttribute : ModbusRegisterAttribute
-{
-    public HoldingRegisterAttribute(UInt16 address, TypeCode modbusType = TypeCode.UInt16) : base(address, modbusType) { }    
-}
-
-

csharp/Lib/Protocols/Modbus/Reflection/Attributes/InputRegister.cs

@@ -0,0 +1,28 @@
+
+
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+public class InputRegister : ModbusRegister
+{
+    private static readonly Type DefaultModbusType = typeof(UInt16);
+
+    public InputRegister(UInt16 address) : this(address, DefaultModbusType)
+    {
+    }
+
+    public InputRegister(UInt16 address, Type modbusType) : base(address, modbusType, ModbusKind.InputRegister)
+    {
+    }    
+}
+
+
+public class InputRegister<T> : InputRegister where T : IConvertible
+{
+    public InputRegister(UInt16 address) : base(address, typeof(T))
+    {
+    }    
+}
+
+    

csharp/Lib/Protocols/Modbus/Reflection/Attributes/InputRegisterAttribute.cs

@@ -1,8 +0,0 @@
-
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public class InputRegisterAttribute : ModbusRegisterAttribute
-{
-    public InputRegisterAttribute(UInt16 address, TypeCode modbusType = TypeCode.UInt16) : base(address, modbusType) { }    
-}
-

csharp/Lib/Protocols/Modbus/Reflection/Attributes/LittleEndian.cs

@@ -0,0 +1,11 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+public class LittleEndian : EndianAttribute
+{
+    public LittleEndian() : base(Endian.Little)
+    {
+    }
+}
+

csharp/Lib/Protocols/Modbus/Reflection/Attributes/ModbusAttribute.cs

@@ -1,32 +1,48 @@
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
 using static System.AttributeTargets;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
 
 [AttributeUsage(Field | Property)]
-public class ModbusAttribute : Attribute 
+public abstract class ModbusAttribute : Attribute
 {
     public UInt16     Address    { get; }
     public UInt16     Size       { get; }
-    public TypeCode ModbusType { get; }
+    public Type       ModbusType { get; }
+    public ModbusKind Kind       { get; }
 
-    protected ModbusAttribute(UInt16 address, TypeCode modbusType)
+    protected ModbusAttribute(UInt16 address, UInt16 size, Type modbusType, ModbusKind kind)
     {
         Address    = address;
+        Size       = size;
         ModbusType = modbusType;
+        Kind       = kind;
+    }
 
-        Size = modbusType switch
+    protected ModbusAttribute(UInt16 address, Type modbusType, ModbusKind kind) : this(address, GetSize(modbusType), modbusType, kind)
     {
-            TypeCode.Boolean => 1,
+    }
-            TypeCode.Int16   => 1,
-            TypeCode.UInt16  => 1,
-            TypeCode.Int32   => 2,
-            TypeCode.UInt32  => 2,
-            TypeCode.Single  => 2,
-            TypeCode.Int64   => 4,
-            TypeCode.UInt64  => 4,
-            TypeCode.Double  => 4,
-            _ => throw new ArgumentException(nameof(modbusType))
-        };
 
+    private static UInt16 GetSize(Type modbusType)
+    {
+        if (!TypeToSize.TryGetValue(modbusType, out var size))
+            throw new ArgumentException("cannot infer size of" + nameof(modbusType), nameof(modbusType));
+
+        return size;
     }
+
+
+    private static readonly Dictionary<Type, UInt16> TypeToSize = new()
+    {
+        [typeof(Boolean)] = 1,
+        [typeof(Int16)]   = 1,
+        [typeof(UInt16)]  = 1,
+        [typeof(Int32)]   = 2,
+        [typeof(UInt32)]  = 2,
+        [typeof(Single)]  = 2,
+        [typeof(Int64)]   = 4,
+        [typeof(UInt64)]  = 4,
+        [typeof(Double)]  = 4,
+    };
 }
+

csharp/Lib/Protocols/Modbus/Reflection/Attributes/ModbusBoolean.cs

@@ -0,0 +1,11 @@
+
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+public class ModbusBoolean : ModbusAttribute
+{
+    protected ModbusBoolean(UInt16 address, ModbusKind kind) : base(address, typeof(Boolean), kind)
+    {
+    }
+}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/ModbusBooleanAttribute.cs

@@ -1,9 +0,0 @@
-
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public class ModbusBooleanAttribute : ModbusAttribute
-{
-    protected ModbusBooleanAttribute(UInt16 address) : base(address, TypeCode.Boolean)
-    {
-    }
-}

csharp/Lib/Protocols/Modbus/Reflection/Attributes/ModbusRegister.cs

@@ -0,0 +1,36 @@
+
+
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+
+public abstract class ModbusRegister : ModbusAttribute
+{
+    public Double Scale   { get; init; } = 1;
+    public Double Offset  { get; init; } = 0;
+
+    protected ModbusRegister(UInt16 address, Type modbusType, ModbusKind kind) : base(address, modbusType, kind)
+    {
+        if (!SupportedTypes.Contains(modbusType))
+            throw new ArgumentException($"Type {modbusType.Name} is not supported " +
+                                        $"for {nameof(ModbusRegister)}",
+                                        nameof(modbusType));
+    }
+    
+    
+    private static readonly Type[] SupportedTypes = 
+    {
+        typeof(Boolean),
+        typeof(Int16) ,
+        typeof(UInt16),
+        typeof(Int32),
+        typeof(UInt32),
+        typeof(Single),
+        typeof(Int64) ,
+        typeof(UInt64),
+        typeof(Double),
+    };
+}
+
+

csharp/Lib/Protocols/Modbus/Reflection/Attributes/ModbusRegisterAttribute.cs

@@ -1,30 +0,0 @@
-
-
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-public abstract class ModbusRegisterAttribute : ModbusAttribute
-{
-    public Double Scale  { get; init; } = 1;
-    public Double Offset { get; init; } = 0;
-
-    protected ModbusRegisterAttribute(UInt16 address, TypeCode modbusType) : base(address, modbusType)
-    {
-        if (!SupportedTypes.Contains(modbusType))
-            throw new ArgumentException(nameof(modbusType));
-    }
-
-
-    internal static readonly TypeCode[] SupportedTypes =
-    {
-        TypeCode.UInt16,
-        TypeCode.Int16,
-        TypeCode.UInt32,
-        TypeCode.Int32,
-        TypeCode.UInt64,
-        TypeCode.Int64,
-        TypeCode.Single,
-        TypeCode.Double
-    };
-    
-}
-

csharp/Lib/Protocols/Modbus/Reflection/Attributes/OneBasedAddressing.cs

@@ -0,0 +1,11 @@
+using static System.AttributeTargets;
+
+namespace InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
+
+[AttributeUsage(Class | Struct)]
+public class OneBasedAddressing : AddressOffset
+{
+    public OneBasedAddressing() : base(-1)
+    {
+    }
+}

csharp/Lib/Protocols/Modbus/Reflection/Batch.cs

@@ -1,25 +1,26 @@
 using InnovEnergy.Lib.Protocols.Modbus.Clients;
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
 using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames;
 using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
-using InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Reflection;
 
 #pragma warning disable CS8509
+#pragma warning disable CS8524
 
 internal record Batch<R>(Action<R> Read, Action<R> Write);
 
 public static class Batches
 {
-    internal static IEnumerable<Batch<R>> MakeBatchesFor<R>(this ModbusClient modbusClient, Int32 addressOffset)
+    internal static IReadOnlyList<Batch<R>> MakeBatchesFor<R>(this ModbusClient modbusClient, Int32 addressOffset)
     {
         var members = ModbusMembers
                      .From<R>(addressOffset)
-                     .OrderBy(m => m.Attribute.GetType().Name)
+                     .OrderBy(m => m.Kind)
                      .ThenBy(m => m.StartAddress)
                      .ThenBy(m => m.EndAddress);
 
-        return MakeBatches<R>(modbusClient, members);
+        return MakeBatches<R>(modbusClient, members).ToList();
     }
 
     private static IEnumerable<Batch<R>> MakeBatches<R>(ModbusClient mb, IEnumerable<ModbusMember> modbusMembers)
@@ -47,7 +48,7 @@ public static class Batches
 
             return m.StartAddress > batchMembers[^1].EndAddress                       // gap between registers 
                 || m.EndAddress   > batchMembers[0].StartAddress + Constants.MaxRegs  // max batch size reached
-                || m.Attribute.GetType() != batchMembers[0].Attribute.GetType();      // different ModbusType
+                || m.Kind        != batchMembers[0].Kind;                             // different Kind 
         }
     }
     
@@ -57,26 +58,28 @@ public static class Batches
         var startAddress = members[0].StartAddress;
         var endAddress   = members[^1].EndAddress;
         var count        = (UInt16)(endAddress - startAddress);
-        var attribute    = members[0].Attribute;
+        var kind         = members[0].Kind;
-        var isWritable   = attribute is HoldingRegisterAttribute or CoilAttribute;
+        var isWritable   = kind is ModbusKind.HoldingRegister or ModbusKind.Coil;
 
         return new Batch<R>(Read(), Write());
         
         Action<R> Read()
         {
-            Func<MbData> readModbus = attribute switch
+            Func<MbData> readModbus = kind switch
             {
-                InputRegisterAttribute   => () => modbusClient.ReadInputRegisters  (startAddress, count),
+                ModbusKind.InputRegister   => () => modbusClient.ReadInputRegisters  (startAddress, count),
-                HoldingRegisterAttribute => () => modbusClient.ReadHoldingRegisters(startAddress, count),
+                ModbusKind.HoldingRegister => () => modbusClient.ReadHoldingRegisters(startAddress, count),
-                DiscreteInputAttribute   => () => modbusClient.ReadDiscreteInputs  (startAddress, count),
+                ModbusKind.DiscreteInput   => () => modbusClient.ReadDiscreteInputs  (startAddress, count),
-                CoilAttribute            => () => modbusClient.ReadCoils           (startAddress, count),
+                ModbusKind.Coil            => () => modbusClient.ReadCoils           (startAddress, count),
             };
 
+            //Console.WriteLine("start: " + startAddress + " count: " + count);
+            
             return record =>
             {
+                var mbData = readModbus();
                 foreach (var member in members)
                 {
-                    var mbData = readModbus();
                     member.ModbusToRecord(mbData, record!);
                 }
             };
@@ -87,28 +90,29 @@ public static class Batches
             if (!isWritable)
                 return _ => { }; // nop
 
-            Func<MbData> createMbData = attribute switch
+            Func<MbData> createMbData = kind switch
             {
-                HoldingRegisterAttribute => () => MbData.Registers(startAddress, count),
+                ModbusKind.HoldingRegister => () => MbData.Registers(startAddress, count),
-                CoilAttribute            => () => MbData.Coils    (startAddress, count),
+                ModbusKind.Coil            => () => MbData.Coils    (startAddress, count),
             };
 
 
-            Action<MbData> writeModbus = attribute switch
+            Action<MbData> writeModbus = kind switch
             {
-                HoldingRegisterAttribute => d => modbusClient.WriteRegisters(startAddress, d.GetRegisters()),
+                ModbusKind.HoldingRegister => d => modbusClient.WriteRegisters(startAddress, d.GetRegisters()),
-                CoilAttribute            => d => modbusClient.WriteCoils    (startAddress, d.GetCoils()),
+                ModbusKind.Coil            => d => modbusClient.WriteCoils    (startAddress, d.GetCoils().Take(count).ToList()), 
+                // ^^  TODO: Coils.count is broken, fix when refactoring to use direct binary codec
             };
 
 
             return rec =>
-            {
-                foreach (var member in members)
             {
                 var mbData = createMbData();
+
+                foreach (var member in members)
                     member.RecordToModbus(rec!, mbData);
+                
                 writeModbus(mbData);
-                }
             };
         }
     }

csharp/Lib/Protocols/Modbus/Reflection/ModbusMember.cs

@@ -1,7 +1,10 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
+using InnovEnergy.Lib.Protocols.Modbus.Protocol;
 using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
 using InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
 using InnovEnergy.Lib.Utils;
+using static System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes;
 using static System.Reflection.BindingFlags;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Reflection;
@@ -12,7 +15,7 @@ internal record ModbusMember
 (
     UInt16                 StartAddress,
     UInt16                 EndAddress,
-    ModbusAttribute        Attribute,
+    ModbusKind             Kind,
     Action<MbData, Object> ModbusToRecord,
     Action<Object, MbData> RecordToModbus
 );
@@ -21,71 +24,140 @@ internal static class ModbusMembers
 {
     private static readonly (Double scale, Double offset) NoTransform = (scale:1, offset:0);
 
-    internal static IEnumerable<ModbusMember> From<R>(Int32 addressOffset) 
+    internal static IEnumerable<ModbusMember> From<R>(Int32 globalAddressOffset, Endian globalEndian = Endian.Undefined)
     {
-        return GetDataMembers<R>()
+        var recordType = typeof(R);
+
+        // "=======================================================================".WriteLine();
+        // recordType.Name.WriteLine();
+
+        var offset = recordType.GetRecordOffset(globalAddressOffset);
+        var endian = recordType.GetEndian(globalEndian);
+        
+        return recordType
+              .GetDataMembers()
               .Where(HasAttribute<ModbusAttribute>)
-              .Select(m => m.CreateModbusMember(addressOffset));
+              .Select(m => m.CreateModbusMember(offset, endian));
     }
 
+    private static Int32 GetRecordOffset([DynamicallyAccessedMembers(All)] this Type recordType, Int32 globalAddressOffset)
+    {
+        return recordType
+              .GetCustomAttributes<AddressOffset>()
+              .Aggregate(globalAddressOffset, (a, b) => a + b.Offset);
+    }
 
-    private static ModbusMember CreateModbusMember(this MemberInfo info, Int32 addressOffset) 
+    private static Endian GetEndian([DynamicallyAccessedMembers(All)] this Type recordType, Endian endian)
+    {
+        return recordType
+              .GetCustomAttributes<EndianAttribute>()
+              .Aggregate(endian, (a, b) => b.Endian.InheritFrom(a));
+    }
+
+    private static ModbusMember CreateModbusMember(this MemberInfo info, Int32 addressOffset, Endian globalEndian) 
     {
         var attribute = info.GetCustomAttributes<ModbusAttribute>().Single();
-        var startAddress = (UInt16)(attribute.Address + addressOffset);
+        var endian    = info.GetCustomAttributes<EndianAttribute>()
-        var endAddress   = (UInt16)(startAddress + attribute.Size);
+                            .Select(a => a.Endian)
+                            .Append(Endian.Undefined)
+                            .First()
+                            .InheritFrom(globalEndian);  
+        
+        var address    = (UInt16)(attribute.Address + addressOffset);
+        var endAddress = (UInt16)(address + attribute.Size);
         var modbusType = attribute.ModbusType;
-        var transform    = attribute is ModbusRegisterAttribute mra
+        var transform  = attribute is ModbusRegister mra
                        ? (mra.Scale, mra.Offset)
                        : NoTransform;
 
-        var modbusToRecord = info.ModbusToRecord(startAddress, modbusType, transform);
+        //Console.WriteLine(info.Name +" " + address + " " + modbusType);
-        var recordToModbus = info.RecordToModbus(startAddress, modbusType, transform);
         
         return new ModbusMember
         (
-            startAddress,
+            address,
             endAddress,
-            attribute, 
+            attribute.Kind, 
-            modbusToRecord, 
+            ModbusToRecord(), 
-            recordToModbus
+            RecordToModbus()
         );
-    }
 
-    private static Action<MbData, Object> ModbusToRecord(this MemberInfo info, UInt16 address, TypeCode modbusType, (Double scale, Double offset) transform) 
+        Action<MbData, Object> ModbusToRecord()
         {
             var decode = ConvertModbusToRecord(transform);
 
-        Func<MbData, IConvertible> readFromMbData = modbusType switch
+            Func<MbData, IConvertible> readFromMbData =
+                modbusType == typeof(Boolean) ? d => d.GetInput(address) :
+                modbusType == typeof(UInt16)  ? d => d.GetUInt16(address) :
+                modbusType == typeof(Int16)   ? d => d.GetInt16(address) :
+                modbusType == typeof(UInt32)  ? d => d.GetUInt32(address) :
+                modbusType == typeof(Int32)   ? d => d.GetInt32(address) :
+                modbusType == typeof(Single)  ? d => d.GetFloat32(address) :
+                modbusType == typeof(UInt64)  ? d => d.GetUInt64(address) :
+                modbusType == typeof(Int64)   ? d => d.GetInt64(address) :
+                modbusType == typeof(Double)  ? d => d.GetFloat64(address) :
+                throw new ArgumentException(nameof(modbusType));
+
+
+            var memberType = info switch
             {
-            TypeCode.Boolean => d => d.GetInput  (address),
+                FieldInfo    fi => fi.FieldType,
-            TypeCode.UInt16  => d => d.GetUInt16 (address),
+                PropertyInfo pi => pi.PropertyType,
-            TypeCode.Int16   => d => d.GetInt16  (address),
-            TypeCode.UInt32  => d => d.GetUInt32 (address),
-            TypeCode.Int32   => d => d.GetInt32  (address),
-            TypeCode.Single  => d => d.GetFloat32(address),
-            TypeCode.UInt64  => d => d.GetUInt64 (address),
-            TypeCode.Int64   => d => d.GetInt64  (address),
-            TypeCode.Double  => d => d.GetFloat64(address),
-            _                => throw new ArgumentException(nameof(modbusType))
             };
 
+            var ctr = memberType.GetConstructor(new[] { typeof(Double) }); // TODO: hardcoded double constructor for Units 
+
+            Func<IConvertible, Object> convert = ctr is null
+                                               ? value => value.ConvertTo(memberType)
+                                               : value => ctr.Invoke(new Object[] { value.ConvertTo<Double>() });
+            
             Action<Object, IConvertible> set = info switch
             {
-            FieldInfo    fi => (rec, value) => fi.SetValue(rec, value.ConvertTo(fi.FieldType)),
+                FieldInfo    fi => (rec, value) => fi.SetValue(rec, convert(value)),
-            PropertyInfo pi => (rec, value) => pi.SetValue(rec, value.ConvertTo(pi.PropertyType)),
+                PropertyInfo pi => (rec, value) => pi.SetValue(rec, convert(value)),
             };
 
-
             return (mbData, rec) =>
             {
-            var rawModbusValue = readFromMbData(mbData);
+                var rawModbusValue = readFromMbData(mbData.WithEndian(endian));
                 var decoded = decode(rawModbusValue);
 
                 set(rec, decoded);
             };
         }
 
+        Action<Object, MbData> RecordToModbus()
+        {
+            var encode = ConvertRecordToModbus(transform);
+
+            Func<Object, IConvertible> get = info switch
+            {
+                FieldInfo    fi => rec => (IConvertible)fi.GetValue(rec)!,
+                PropertyInfo pi => rec => (IConvertible)pi.GetValue(rec)!,
+            };
+
+            Action<IConvertible, MbData> writeToMbData =
+                modbusType == typeof(Boolean)? (value, mbData) => mbData.SetCoil   (address, value.ConvertTo<Boolean>()) :
+                modbusType == typeof(UInt16) ? (value, mbData) => mbData.SetUInt16 (address, value.ConvertTo<UInt16>()) :
+                modbusType == typeof(Int16)  ? (value, mbData) => mbData.SetInt16  (address, value.ConvertTo<Int16>()) :
+                modbusType == typeof(UInt32) ? (value, mbData) => mbData.SetUInt32 (address, value.ConvertTo<UInt32>()) :
+                modbusType == typeof(Int32)  ? (value, mbData) => mbData.SetInt32  (address, value.ConvertTo<Int32>()) :
+                modbusType == typeof(Single) ? (value, mbData) => mbData.SetFloat32(address, value.ConvertTo<Single>()) :
+                modbusType == typeof(UInt64) ? (value, mbData) => mbData.SetUInt64 (address, value.ConvertTo<UInt64>()) :
+                modbusType == typeof(Int64)  ? (value, mbData) => mbData.SetInt64  (address, value.ConvertTo<Int64>()) :
+                modbusType == typeof(Double) ? (value, mbData) => mbData.SetFloat64(address, value.ConvertTo<Double>()) :
+                throw new ArgumentException(nameof(modbusType));
+
+            return (rec, mbData) =>
+            {
+                var memberValue = get(rec);
+                var encoded     = encode(memberValue);
+
+                writeToMbData(encoded, mbData.WithEndian(endian));
+            };
+        }
+    }
+
+
     private static Func<IConvertible, IConvertible> ConvertModbusToRecord((Double scale, Double offset) transform)
     {
         if (transform == NoTransform)
@@ -98,41 +170,10 @@ internal static class ModbusMembers
         {
             var value = c.ConvertTo<Decimal>();
             
-            return (value + offset) * scale;
+            return
-        };
+            /**********************************/
-    }
+            /**/  (value + offset) * scale; /**/ 
-
+            /**********************************/
-
-    private static Action<Object, MbData> RecordToModbus(this MemberInfo info, UInt16 addr, TypeCode modbusType, (Double scale, Double offset) transform) 
-    {
-        var encode = ConvertRecordToModbus(transform);
-        
-        Func<Object, IConvertible> get = info switch
-        {
-            FieldInfo    fi => rec => (IConvertible)fi.GetValue(rec)!,
-            PropertyInfo pi => rec => (IConvertible)pi.GetValue(rec)!,
-        };
-
-        Action<IConvertible, MbData> writeToMbData = modbusType switch
-        {
-            TypeCode.Boolean => (value, mbData) => mbData.SetCoil   (addr, value.ConvertTo<Boolean>()),
-            TypeCode.UInt16  => (value, mbData) => mbData.SetUInt16 (addr, value.ConvertTo<UInt16>()),
-            TypeCode.Int16   => (value, mbData) => mbData.SetInt16  (addr, value.ConvertTo<Int16>()),
-            TypeCode.UInt32  => (value, mbData) => mbData.SetUInt32 (addr, value.ConvertTo<UInt32>()),
-            TypeCode.Int32   => (value, mbData) => mbData.SetInt32  (addr, value.ConvertTo<Int32>()),
-            TypeCode.Single  => (value, mbData) => mbData.SetFloat32(addr, value.ConvertTo<Single>()),
-            TypeCode.UInt64  => (value, mbData) => mbData.SetUInt64 (addr, value.ConvertTo<UInt64>()),
-            TypeCode.Int64   => (value, mbData) => mbData.SetInt64  (addr, value.ConvertTo<Int64>()),
-            TypeCode.Double  => (value, mbData) => mbData.SetFloat64(addr, value.ConvertTo<Double>()),
-            _                => throw new ArgumentException(nameof(modbusType))
-        };
-
-        return (rec, mbData) =>
-        {
-            var memberValue = get(rec);
-            var encoded = encode(memberValue);
-
-            writeToMbData(encoded, mbData);
         };
     }
 
@@ -148,7 +189,10 @@ internal static class ModbusMembers
         {
             var value = c.ConvertTo<Decimal>();
             
-            return value / scale - offset;
+            return
+            /*******************************/
+            /**/ value / scale - offset; /**/
+            /*******************************/
         };
     }
 
@@ -156,10 +200,8 @@ internal static class ModbusMembers
     private static T Nop<T>(T c) => c;
 
 
-    private static IEnumerable<MemberInfo> GetDataMembers<R>()
+    private static IEnumerable<MemberInfo> GetDataMembers([DynamicallyAccessedMembers(All)] this Type recordType)
     {
-        var recordType = typeof(R);
-                
         const BindingFlags bindingFlags = Instance
                                         | Public
                                         | NonPublic
@@ -176,4 +218,3 @@ internal static class ModbusMembers
         return i.GetCustomAttributes<T>().Any();
     }
 }
-    

csharp/Lib/Protocols/Modbus/Reflection/Record.cs

@@ -1,17 +0,0 @@
-using System.Reflection;
-using InnovEnergy.Lib.Protocols.Modbus.Reflection.Attributes;
-
-#pragma warning disable CS8509
-
-namespace InnovEnergy.Lib.Protocols.Modbus.Reflection;
-
-public static class Record
-{
-    internal static Int32 GetAddressOffset<R>()
-    {
-        return typeof(R)
-              .GetCustomAttributes<AddressOffsetAttribute>()
-              .Select(a => a.Offset)
-              .FirstOrDefault();
-    }
-}

csharp/Lib/Protocols/Modbus/Slaves/ModbusDevice.cs

@@ -1,19 +1,17 @@
+using System.Diagnostics.CodeAnalysis;
 using InnovEnergy.Lib.Protocols.Modbus.Clients;
 using InnovEnergy.Lib.Protocols.Modbus.Reflection;
+using static System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes;
 
 namespace InnovEnergy.Lib.Protocols.Modbus.Slaves;
 
-using Float32 = Single;
-using Float64 = Double;
-
 public class ModbusDevice<R> where R : notnull
 {
     private readonly IReadOnlyList<Batch<R>> _Batches;
 
     public ModbusDevice(ModbusClient modbusClient, Int32 addressOffset = 0)
     {
-        var offset = addressOffset + Record.GetAddressOffset<R>();
+        _Batches = modbusClient.MakeBatchesFor<R>(addressOffset);
-        _Batches   = modbusClient.MakeBatchesFor<R>(offset).ToList();
     }
 
     public R Read()
@@ -37,7 +35,7 @@ public class ModbusDevice<R> where R : notnull
         return Read(r);
     }
 
-    public R Read(R record) 
+    public R Read([DynamicallyAccessedMembers(All)] R record) 
     {
         foreach (var batch in _Batches)
             batch.Read(record);
@@ -45,7 +43,7 @@ public class ModbusDevice<R> where R : notnull
         return record;
     }
 
-    public void Write(R record)
+    public void Write([DynamicallyAccessedMembers(All)] R record)
     {
         foreach (var batch in _Batches)
             batch.Write(record);