/// <summary>
/// Convert the data stream values retrieved from the VCU to a format that can be plotted by the <c>FormViewDataStream</c> class.
/// </summary>
/// <remarks>
/// The value array retrieved by from the VCU is initially mapped to the WatchIdentifierList property of Column[0] of the workset, however, the WatchElement
/// array associated with each frame must be mapped to the WatchElementList property of the workset.
/// </remarks>
/// <param name="startTime">The start time of the fault log.</param>
/// <param name="sampleCount">The number of samples in the data stream.</param>
/// <param name="frameIntervalMs">The interval, in ms, between consecutive data frames.</param>
/// <param name="values">The point values corresponding to each variable.</param>
/// <param name="dataTypes">The data types associated with each value.</param>
/// <param name="workset">The workset that is to be used to define the output format.</param>
/// <returns>The watch variable values in the format that can be plotted by the <c>FormViewDataStream</c> class.</returns>
/// <exception cref="ArgumentException">Thrown if one or more of the the watch identifiers defined in the WatchElementList property of the workset does nor exist.</exception>
private List<WatchFrame_t> ConvertToWatchFrameList(DateTime startTime, short sampleCount, short frameIntervalMs, int[] values, short[] dataTypes, Workset_t workset)
{
Debug.Assert(sampleCount > 1, "CommunicationEvent.ConvertToWatchFrameList() - [pointCount > 1]");
Debug.Assert(frameIntervalMs > 0, "CommunicationEvent.ConvertToWatchFrameList() - [frameIntervalMs > 0");
Debug.Assert(values != null, "CommunicationEvent.ConvertToWatchFrameList() - [values != null]");
Debug.Assert(dataTypes != null, "CommunicationEvent.ConvertToWatchFrameList() - [dataTypes != null]");
short watchCount = (short)workset.WatchElementList.Count;
// Create a look-up array to translate the watch variable data retrieved from the VCU to the order defined by the WatchElementList property of the workset.
short[] translate = new short[watchCount];
short watchIdentifier, rowIndex, columnIndex;
WatchVariable watchVariable;
for (short watchElementIndex = 0; watchElementIndex < watchCount; watchElementIndex++)
{
watchIdentifier = workset.WatchElementList[watchElementIndex];
try
{
watchVariable = Lookup.WatchVariableTable.Items[watchIdentifier];
if (watchVariable == null)
{
throw new ArgumentException(Resources.MBTWatchVariableNotDefined);
}
}
catch (Exception)
{
throw new ArgumentException(Resources.MBTWatchVariableNotDefined);
}
workset.GetWatchVariableLocation(watchVariable.OldIdentifier, out columnIndex, out rowIndex);
Debug.Assert(((columnIndex != CommonConstants.NotFound) && (rowIndex != CommonConstants.NotFound)), "CommunicationEvent.ConvertToWatchFrameList() - [((columnIndex != 0) || (rowIndex != CommonConstants.NotFound))]");
translate[watchElementIndex] = rowIndex;
}
// Translate the values of the watch variables retrieved from the VCU to a list of watch frames.
List<WatchFrame_t> watchFrameList = new List<WatchFrame_t>();
WatchFrame_t watchFrame;
WatchElement_t watchElement;
for (int frameIndex = 0; frameIndex < sampleCount; frameIndex++)
{
watchFrame = new WatchFrame_t();
watchFrame.CurrentDateTime = startTime.AddMilliseconds(frameIndex * frameIntervalMs);
watchFrame.WatchElements = new WatchElement_t[watchCount];
for (short watchElementIndex = 0; watchElementIndex < watchCount; watchElementIndex++)
{
watchElement = new WatchElement_t();
watchElement.ElementIndex = watchElementIndex;
watchElement.WatchIdentifier = workset.WatchElementList[watchElementIndex];
watchElement.DataType = dataTypes[translate[watchElementIndex]];
watchElement.Value = (double)values[(frameIndex * watchCount) + translate[watchElementIndex]];
watchFrame.WatchElements[watchElementIndex] = watchElement;
}
watchFrameList.Add(watchFrame);
}
return watchFrameList;
}
/// <summary>
/// Retrieve the watch elements from the target hardware.
/// </summary>
/// <remarks>The watch elements are the watch values that are being monitored by the target hardware as defined by the
/// <c>SetWatchElements()> method.</c></remarks>
/// <returns>The retrieved watch element table, if successful; otherwise, null.</returns>
/// <exception cref="CommunicationException">Thrown if the error code returned from the call to the VcuCommunication32/VcuCommunication64
/// UpdateElements() method is not CommunicationError.Success.</exception>
public WatchElement_t[] UpdateWatchElements(bool forceUpdate)
{
Debug.Assert(m_UpdateWatchElements != null, "CommunicationWatch.UpdateWatchElements() - [m_UpdateWatchElementsDelegate != null]");
Debug.Assert(m_MutexCommuncationInterface != null, "CommunicationWatch.UpdateWatchElements() - [m_MutexCommuncationInterface != null]");
WatchElement_t[] watchElements = new WatchElement_t[Parameter.WatchSize];
double[] watchValues = new double[Parameter.WatchSize];
short[] watchDataTypes = new short[Parameter.WatchSize];
short forceUpdateAsShort = (forceUpdate == true) ? ForceUpdateTrue : ForceUpdateFalse;
CommunicationError errorCode = CommunicationError.UnknownError;
try
{
m_MutexCommuncationInterface.WaitOne(DefaultMutexWaitDurationMs, false);
errorCode = (CommunicationError)m_UpdateWatchElements(forceUpdateAsShort, watchValues, watchDataTypes);
}
catch (Exception)
{
errorCode = CommunicationError.SystemException;
throw new CommunicationException(Resources.EMUpdateWatchElementsFailed, errorCode);
}
finally
{
m_MutexCommuncationInterface.ReleaseMutex();
}
if (DebugMode.Enabled == true)
{
DebugMode.UpdateWatchElements_t updateWatchElements = new DebugMode.UpdateWatchElements_t(forceUpdateAsShort, watchValues,
watchDataTypes, errorCode);
DebugMode.Write(updateWatchElements.ToXML());
}
if (errorCode != CommunicationError.Success)
{
throw new CommunicationException(Resources.EMUpdateWatchElementsFailed, errorCode);
}
// Map the values retrieved from the target hardware into the watch element table.
for (short elementIndex = 0; elementIndex < Parameter.WatchSize; elementIndex++)
{
watchElements[elementIndex] = new WatchElement_t();
watchElements[elementIndex].Value = watchValues[elementIndex];
watchElements[elementIndex].DataType = watchDataTypes[elementIndex];
watchElements[elementIndex].WatchIdentifier = m_WatchElements[elementIndex].WatchIdentifier;
watchElements[elementIndex].ElementIndex = elementIndex;
}
return watchElements;
}
/// <summary>
/// Update the watch variable lookup table with the latest watch element data retrieved from the targer hardware.
/// </summary>
/// <param name="watchElements">The watch element table retrieved from the target hardware.</param>
public void UpdateWatchVariableTable(WatchElement_t[] watchElements)
{
short watchIdentifier;
for (int elementIndex = 0; elementIndex < watchElements.Length; elementIndex++)
{
watchIdentifier = watchElements[elementIndex].WatchIdentifier;
try
{
Lookup.WatchVariableTable.Items[watchIdentifier].ValueFromTarget = watchElements[elementIndex].Value;
Lookup.WatchVariableTable.Items[watchIdentifier].DataTypeFromTarget = watchElements[elementIndex].DataType;
}
catch (Exception)
{
continue;
}
}
}
/// <summary>
/// Retrieve the watch elements from the target hardware.
/// </summary>
/// <remarks>The watch elements are the watch values that are being monitored by the target hardware as defined by the <c>SetWatchElements()
/// </c> method.</remarks>
/// <returns>The retrieved watch element table, if successful; otherwise, null.</returns>
/// <exception cref="CommunicationException">Thrown if the error code returned from the call to the PTUDLL32.UpdateElements() method is not
/// CommunicationError.Success.</exception>
public WatchElement_t[] UpdateWatchElements(bool forceUpdate)
{
WatchElement_t[] watchElements = new WatchElement_t[Parameter.WatchSize];
double[] watchValues = new double[Parameter.WatchSize];
short[] watchDataTypes = new short[Parameter.WatchSize];
// Initialize the data values and data types.
WatchVariable watchVariable;
for (int elementIndex = 0; elementIndex < Parameter.WatchSize; elementIndex++)
{
try
{
watchVariable = Lookup.WatchVariableTable.Items[m_WatchElements[elementIndex].WatchIdentifier];
if (watchVariable == null)
{
throw new Exception();
}
watchValues[elementIndex] = watchVariable.ValueFromTarget;
watchDataTypes[elementIndex] = watchVariable.DataTypeFromTarget;
}
catch (Exception)
{
watchValues[elementIndex] = 0;
watchDataTypes[elementIndex] = 0;
}
}
// Map the values retrieved from the target hardware into the watch element table.
for (short elementIndex = 0; elementIndex < Parameter.WatchSize; elementIndex++)
{
watchElements[elementIndex] = new WatchElement_t();
watchElements[elementIndex].Value = watchValues[elementIndex];
watchElements[elementIndex].DataType = watchDataTypes[elementIndex];
watchElements[elementIndex].WatchIdentifier = m_WatchElements[elementIndex].WatchIdentifier;
watchElements[elementIndex].ElementIndex = elementIndex;
}
return watchElements;
}
