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

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;

public class WriteCoilsResponseFrame : ModbusFrame
{
    private const Int32 Size = 6;

    public MbWord WriteAddress => Data.WordAt(2);
    public MbWord NbWritten    => Data.WordAt(4);

    internal static Int32 ExpectedSize() => Size;

    public WriteCoilsResponseFrame(Byte slave, UInt16 writeAddress, UInt16 nbWritten) : base(Size)
    {
        SlaveAddress .Set(slave);
        FunctionCode .Set(WriteMultipleCoils);
        WriteAddress .Set(writeAddress);
        NbWritten    .Set(nbWritten);
    }


    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));
    }

    public static WriteCoilsResponseFrame Parse(Byte[] data) => new WriteCoilsResponseFrame(data);
    
}