/// <summary>
/// ADS Read State - Request<br/>
/// Reads the ADS status and the device status of an ADS device.
/// </summary>
/// <param name="amsHeader"></param>
/// <param name="binaryReader"></param>
/// <exception cref="FormatException"/>
internal AdsReadStateRequest(AmsHeader amsHeader, BinaryReader binaryReader)
{
if (!amsHeader.IsValid)
{
throw new FormatException("Parsed AmsHeader is not valid!");
}
if (amsHeader.Data_Length != EXPECTED_DATA_LEN)
{
throw new FormatException($"Parsed AmsHeader is not valid, Data_Length={amsHeader.Data_Length} not allowed.");
}
_PacketData = binaryReader.ReadBytes((int)amsHeader.Data_Length);
}
/// <summary>
/// ADS Write Control - Response<br/>
/// Changes the ADS status and the device status of an ADS device. Additionally it is possible to send data to the ADS device to transfer further information.<br/>
/// These data were not analysed from the current ADS devices (PLC, NC, ...)
/// </summary>
/// <param name="amsHeader"></param>
/// <param name="binaryReader"></param>
/// <exception cref="FormatException"/>
internal AdsDeleteDeviceNotificationResponse(AmsHeader amsHeader, BinaryReader binaryReader)
{
if (!amsHeader.IsValid)
{
throw new FormatException("Parsed AmsHeader is not valid!");
}
if (amsHeader.Data_Length != EXPECTED_DATA_LEN)
{
throw new FormatException($"Parsed AmsHeader is not valid, Data_Length={amsHeader.Data_Length} not allowed.");
}
_PacketData = binaryReader.ReadBytes((int)amsHeader.Data_Length);
ParsePacketData();
}
/// <summary>
/// ADS Write - Response<br/>
/// With ADS Write data can be written to an ADS device. The data are addressed by the Index Group and the Index Offset
/// </summary>
/// <param name="amsHeader"></param>
/// <param name="binaryReader"></param>
/// <exception cref="FormatException"/>
internal AdsWriteResponse(AmsHeader amsHeader, BinaryReader binaryReader)
{
if (!amsHeader.IsValid)
{
throw new FormatException("Parsed AmsHeader is not valid!");
}
// sometimes, Data_Length is larger then 4...
if (amsHeader.Data_Length < EXPECTED_DATA_LEN)
{
throw new FormatException($"Parsed AmsHeader is not valid, Data_Length={amsHeader.Data_Length} not allowed.");
}
_PacketData = binaryReader.ReadBytes((int)amsHeader.Data_Length);
ParsePacketData();
}
internal static IPayload GetAdsCommand(AmsHeader amsHeader, BinaryReader binaryReader)
{
UInt16 cId = BuildReqResFromAmsHeader(amsHeader);
if (AdsCommandLookUp.TryGetValue(cId, out var adsCommandType))
{
var constructorInfo = adsCommandType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, null,
new Type[] { typeof(AmsHeader), typeof(BinaryReader) }, null);
if (constructorInfo is not null)
{
try
{
return((IPayload)(constructorInfo.Invoke(new object[] { amsHeader, binaryReader })));
}
catch (Exception ex)
{
throw ex.InnerException ?? ex;
}
}
}
throw new Exception("Fatal Error, no valid constructor found.");
}
private static ushort BuildReqResFromAmsHeader(AmsHeader amsHeader)
{
return(amsHeader.IsResponse ? BuildResponseOfCommand(amsHeader.AmsCommandId) : BuildRequestOfCommand(amsHeader.AmsCommandId));
}