public static Memory <byte> TranslateToMemory(S7CommSetupDatagram datagram)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header);
S7CommSetupParameterDatagram.TranslateToMemory(datagram.Parameter, result.Slice(datagram.Header.GetHeaderSize()));
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7WriteJobDatagram datagram, out int memoryLength)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header, out memoryLength);
var mem = result.Memory.Slice(0, memoryLength);
var span = mem.Span;
var offset = datagram.Header.GetHeaderSize();
span[offset++] = datagram.Function;
span[offset++] = datagram.ItemCount;
foreach (var item in datagram.Items)
{
S7AddressItemSpecificationDatagram.TranslateToMemory(item, mem.Slice(offset));
offset += item.GetSpecificationLength();
}
foreach (var item in datagram.Data)
{
S7DataItemSpecification.TranslateToMemory(item, mem.Slice(offset));
offset += item.GetSpecificationLength();
if (offset % 2 != 0)
{
offset++;
}
}
return(result);
}
public static S7WriteJobDatagram TranslateFromMemory(Memory <byte> data)
{
var span = data.Span;
var result = new S7WriteJobDatagram
{
Header = S7HeaderDatagram.TranslateFromMemory(data),
};
var offset = result.Header.GetHeaderSize();
result.Function = span[offset++];
result.ItemCount = span[offset++];
for (var i = 0; i < result.ItemCount; i++)
{
var res = S7AddressItemSpecificationDatagram.TranslateFromMemory(data.Slice(offset));
result.Items.Add(res);
offset += res.GetSpecificationLength();
}
for (var i = 0; i < result.ItemCount; i++)
{
var res = S7DataItemSpecification.TranslateFromMemory(data.Slice(offset));
result.Data.Add(res);
offset += res.GetSpecificationLength();
}
return(result);
}
public static Memory <byte> TranslateToMemory(S7AckDataDatagram datagram)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header);
S7HeaderErrorCodesDatagram.TranslateToMemory(datagram.Error, result.Slice(datagram.Header.GetHeaderSize()));
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7CommSetupDatagram datagram, out int memoryLength)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header, out memoryLength);
var take = memoryLength - datagram.Header.GetHeaderSize();
S7CommSetupParameterDatagram.TranslateToMemory(datagram.Parameter, result.Memory.Slice(datagram.Header.GetHeaderSize(), take));
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7AckDataDatagram datagram, out int memoryLength)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header, datagram.Header.GetHeaderSize() + datagram.Error.GetSize() + datagram.Header.ParamLength + datagram.Header.DataLength, out memoryLength);
var take = memoryLength - datagram.Header.GetHeaderSize();
S7HeaderErrorCodesDatagram.TranslateToMemory(datagram.Error, result.Memory.Slice(datagram.Header.GetHeaderSize(), take));
return(result);
}
public static S7CommSetupDatagram TranslateFromMemory(Memory <byte> data)
{
var result = new S7CommSetupDatagram
{
Header = S7HeaderDatagram.TranslateFromMemory(data)
};
result.Parameter = S7CommSetupParameterDatagram.TranslateFromMemory(data.Slice(result.Header.GetHeaderSize()));
return(result);
}
public static S7AckDataDatagram TranslateFromMemory(Memory <byte> data)
{
var result = new S7AckDataDatagram
{
Header = S7HeaderDatagram.TranslateFromMemory(data)
};
result.Error = S7HeaderErrorCodesDatagram.TranslateFromMemory(data.Slice(result.Header.GetHeaderSize()));
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7UserDataDatagram datagram, out int memoryLength)
{
var offset = datagram.Header.GetHeaderSize() + datagram.Parameter.GetParamSize();
var dataSize = offset + datagram.Data.GetUserDataLength();
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header, dataSize, out memoryLength);
var mem = result.Memory.Slice(0, memoryLength);
S7UserDataParameter.TranslateToMemory(datagram.Parameter, mem.Slice(datagram.Header.GetHeaderSize()));
mem.Span[offset++] = datagram.Data.ReturnCode;
mem.Span[offset++] = datagram.Data.TransportSize;
BinaryPrimitives.WriteUInt16BigEndian(mem.Slice(offset, 2).Span, datagram.Data.UserDataLength);
datagram.Data.Data.CopyTo(mem.Slice(offset + 2, datagram.Data.UserDataLength));
return(result);
}
public static S7HeaderDatagram TranslateFromMemory(Memory <byte> data)
{
var span = data.Span;
var result = new S7HeaderDatagram
{
ProtocolId = span[0],
PduType = span[1],
RedundancyIdentification = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(2, 2)),
ProtocolDataUnitReference = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(4, 2)),
ParamLength = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(6, 2)),
DataLength = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(8, 2)),
};
return(result);
}
public static Memory <byte> TranslateToMemory(S7HeaderDatagram datagram)
{
var length = datagram.GetMemorySize();
var result = new Memory <byte>(new byte[length]); // check if we could use ArrayBuffer
var span = result.Span;
span[0] = datagram.ProtocolId;
span[1] = datagram.PduType;
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(2, 2), datagram.RedundancyIdentification);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(4, 2), datagram.ProtocolDataUnitReference);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(6, 2), datagram.ParamLength);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(8, 2), datagram.DataLength);
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7HeaderDatagram datagram, int length, out int memoryLength)
{
memoryLength = length == -1 ? datagram.GetMemorySize() : length;
var result = MemoryPool <byte> .Shared.Rent(memoryLength);
var span = result.Memory.Slice(0, memoryLength).Span;
span[0] = datagram.ProtocolId;
span[1] = datagram.PduType;
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(2, 2), datagram.RedundancyIdentification);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(4, 2), datagram.ProtocolDataUnitReference);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(6, 2), datagram.ParamLength);
BinaryPrimitives.WriteUInt16BigEndian(span.Slice(8, 2), datagram.DataLength);
return(result);
}
public static Memory <byte> TranslateToMemory(S7ReadJobDatagram datagram)
{
var result = S7HeaderDatagram.TranslateToMemory(datagram.Header);
var span = result.Span;
var offset = datagram.Header.GetHeaderSize();
span[offset++] = datagram.Function;
span[offset++] = datagram.ItemCount;
foreach (var item in datagram.Items)
{
S7AddressItemSpecificationDatagram.TranslateToMemory(item, result.Slice(offset));
offset += item.GetSpecificationLength();
}
return(result);
}
public static S7UserDataDatagram TranslateFromMemory(Memory <byte> data)
{
var span = data.Span;
var result = new S7UserDataDatagram
{
Header = S7HeaderDatagram.TranslateFromMemory(data),
Data = new S7UserData()
};
result.Parameter = S7UserDataParameter.TranslateFromMemory(data.Slice(result.Header.GetHeaderSize()));
var offset = result.Header.GetHeaderSize() + result.Parameter.GetParamSize();
result.Data.ReturnCode = span[offset++];
result.Data.TransportSize = span[offset++];
result.Data.UserDataLength = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(offset, 2));
offset += 2;
result.Data.Data = new byte[result.Data.UserDataLength];
data.Slice(offset, result.Data.UserDataLength).CopyTo(result.Data.Data);
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7HeaderDatagram datagram, out int memoryLength) => TranslateToMemory(datagram, -1, out memoryLength);
