/// <summary>
/// Gets the updateable properties of the object which has to be updated by the data updater.
/// </summary>
/// <param name="ObjectToUpdate">The object to update.</param>
/// <returns>List of updateable properties (PropertyInfo, ModBusSourceAttribute)</returns>
private List <Tuple <PropertyInfo, ModbusSourceAttribute> > GetUpdateableProperties(object ObjectToUpdate)
{
Type objectType = ObjectToUpdate.GetType();
lock (updatablePropertiesDictionaryLocker)
{
if (!updatablePropertiesDictionary.TryGetValue(objectType, out List <Tuple <PropertyInfo, ModbusSourceAttribute> > updateablePropertiesList))
{
updateablePropertiesList = new List <Tuple <PropertyInfo, ModbusSourceAttribute> >();
foreach (PropertyInfo propertyInfo in ObjectToUpdate.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public).Where(PI => PI.CanRead && PI.CanWrite))
{
ModbusSourceAttribute sa = propertyInfo.GetCustomAttribute <ModbusSourceAttribute>(true);
if (sa != null)
{
updateablePropertiesList.Add(new Tuple <PropertyInfo, ModbusSourceAttribute>(propertyInfo, sa));
}
}
updatablePropertiesDictionary.Add(objectType, updateablePropertiesList);
if (updateablePropertiesList.Count == 0)
{
log.Debug($"Object of type {objectType.Name} has no updateable properties.");
}
}
return(updateablePropertiesList);
}
}
/// <summary>
/// Gets the modbus value.
/// </summary>
/// <param name="ModbusDataArray">The array of data received from the modbus.</param>
/// <param name="ArrayOffset">The array offset.</param>
/// <param name="ModbusSource">The modbus source attribute.</param>
/// <returns>Value taken from the data array or null if the data specified in the ModbusSource does not exist in the data array.</returns>
/// <exception cref="Exception">
/// Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ValueSourceType} for {nameof(ModbusSource.ValueSourceType)}
/// or
/// Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ValueSourceType} for {nameof(ModbusSource.ValueSourceType)}
/// </exception>
private object GetModbusValue(int[] ModbusDataArray, int ArrayOffset, ModbusSourceAttribute ModbusSource)
{
if ((ModbusSource.ValueOffset - ArrayOffset) < 0 || (ModbusSource.ValueOffset - ArrayOffset) >= ModbusDataArray.Length)
{
return(null);
}
double NumericValue;
switch (ModbusSource.ValueSourceType)
{
case ModbusSourceTypeEnum.int16:
NumericValue = ModbusDataArray[ModbusSource.ValueOffset - ArrayOffset];
break;
case ModbusSourceTypeEnum.uint32:
NumericValue = (BitConverter.ToUInt16(BitConverter.GetBytes(ModbusDataArray[ModbusSource.ValueOffset - ArrayOffset]), 0) * 65536) + (BitConverter.ToUInt16(BitConverter.GetBytes(ModbusDataArray[ModbusSource.ValueOffset - ArrayOffset + 1]), 0));
break;
case ModbusSourceTypeEnum.uint16:
NumericValue = BitConverter.ToUInt16(BitConverter.GetBytes(ModbusDataArray[ModbusSource.ValueOffset - ArrayOffset]), 0);
break;
default:
log.Error($"Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ValueSourceType} for {nameof(ModbusSource.ValueSourceType)}");
throw new Exception($"Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ValueSourceType} for {nameof(ModbusSource.ValueSourceType)}");
}
if (!ModbusSource.ScaleFactorOffset.HasValue)
{
return(NumericValue);
}
if ((ModbusSource.ScaleFactorOffset.Value - ArrayOffset) < 0 || (ModbusSource.ScaleFactorOffset.Value - ArrayOffset) >= ModbusDataArray.Length)
{
return(null);
}
double NumericScale;
switch (ModbusSource.ScaleFactorSourceType)
{
case ModbusSourceTypeEnum.int16:
NumericScale = ModbusDataArray[ModbusSource.ScaleFactorOffset.Value - ArrayOffset];
break;
case ModbusSourceTypeEnum.uint32:
NumericScale = ((uint)(int)ModbusDataArray[ModbusSource.ScaleFactorOffset.Value - ArrayOffset]) * 65536 + ((uint)(int)ModbusDataArray[ModbusSource.ScaleFactorOffset.Value - ArrayOffset + 1]);
break;
case ModbusSourceTypeEnum.uint16:
NumericScale = (UInt16)(int)ModbusDataArray[ModbusSource.ScaleFactorOffset.Value - ArrayOffset];
break;
default:
log.Error($"Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ScaleFactorSourceType} for {nameof(ModbusSource.ScaleFactorSourceType)}");
throw new Exception($"Unknown {nameof(ModbusSourceTypeEnum)} {ModbusSource.ScaleFactorSourceType}");
}
return(NumericValue * Math.Pow(10, NumericScale));
}
