public static S7WriteJobAckDatagram Build(SiemensPlcProtocolContext context, int id, IEnumerable <WriteResultItem> vars)
{
var result = new S7WriteJobAckDatagram();
result.Header.Header.ProtocolDataUnitReference = (ushort)id;
if (vars != null)
{
result.ItemCount = (byte)vars.Count();
var numberOfItems = result.ItemCount;
foreach (var item in vars)
{
numberOfItems--;
result.Data.Add(new S7DataItemWriteResult
{
ReturnCode = (byte)item.ReturnCode
});
}
}
result.Header.Header.ParamLength = (ushort)2;
result.Header.Header.DataLength = (ushort)result.Data.Count;
result.ItemCount = (byte)result.Data.Count;
return(result);
}
public static Memory <byte> TranslateToMemory(S7WriteJobAckDatagram datagram)
{
var result = S7AckDataDatagram.TranslateToMemory(datagram.Header);
var span = result.Span;
var offset = datagram.Header.Header.GetHeaderSize();
span[offset++] = datagram.Function;
span[offset++] = datagram.ItemCount;
foreach (var item in datagram.Data)
{
S7DataItemWriteResult.TranslateToMemory(item, result.Slice(offset));
offset += item.GetSpecificationLength();
}
return(result);
}
public static IMemoryOwner <byte> TranslateToMemory(S7WriteJobAckDatagram datagram, out int memoryLength)
{
var result = S7AckDataDatagram.TranslateToMemory(datagram.Header, out memoryLength);
var take = memoryLength - datagram.Header.GetParameterOffset();
var mem = result.Memory.Slice(datagram.Header.GetParameterOffset(), take);
var span = mem.Span;
var offset = 0;
span[offset++] = datagram.Function;
span[offset++] = datagram.ItemCount;
foreach (var item in datagram.Data)
{
S7DataItemWriteResult.TranslateToMemory(item, mem.Slice(offset));
offset += item.GetSpecificationLength();
}
return(result);
}
public static S7WriteJobAckDatagram TranslateFromMemory(Memory <byte> data)
{
var span = data.Span;
var result = new S7WriteJobAckDatagram
{
Header = S7AckDataDatagram.TranslateFromMemory(data),
};
var offset = result.Header.GetParameterOffset();
result.Function = span[offset++];
result.ItemCount = span[offset++];
for (var i = 0; i < result.ItemCount; i++)
{
var res = S7DataItemWriteResult.TranslateFromMemory(data.Slice(offset));
result.Data.Add(res);
offset += res.GetSpecificationLength();
}
return(result);
}
