/// <summary>
/// Get the self test special message.
/// </summary>
/// <param name="Result">The result of the call. A value of: (1) 1 represents success; (2) indicates that the error message defined by the
/// <paramref name="Reason"/> parameter applies and (3) represents an unknown error.</param>
/// <param name="Reason">A value of 1 represents success; otherwise, the value is mapped to the <c>ERRID</c> field of the
/// <c>SELFTESTERRMESS</c> table of the data dictionary in order to determine the error message returned from the VCU.</param>
/// <returns>Success, if the communication request was successful; otherwise, an error code.</returns>
public CommunicationError GetSelfTestSpecialMessage(out Int16 Result, out Int16 Reason)
{
Result = -1;
Reason = -1;
// Initiate transaction with embedded target
CommunicationError commError = m_PtuTargetCommunication.SendDataRequestToEmbedded(m_CommDevice, ProtocolPTU.PacketType.GET_SELF_TEST_PACKET, m_RxMessage);
if (commError != CommunicationError.Success)
{
return(commError);
}
// Extract all of the information from the received data
Byte valid = m_RxMessage[8];
Byte messageMode = m_RxMessage[9];
if (m_CommDevice.IsTargetBigEndian())
{
valid = Utils.ReverseByteOrder(valid);
messageMode = Utils.ReverseByteOrder(messageMode);
}
if (valid != 1)
{
return(CommunicationError.UnknownError);
}
if (messageMode != STC_MSG_MODE_SPECIAL)
{
return(CommunicationError.BadResponse);
}
Result = BitConverter.ToInt16(m_RxMessage, 12);
Byte bReason = m_RxMessage[15];
if (m_CommDevice.IsTargetBigEndian())
{
Result = Utils.ReverseByteOrder(Result);
bReason = Utils.ReverseByteOrder(bReason);
}
Reason = bReason;
return(CommunicationError.Success);
}
/// <summary>
/// Method requests and retrieves from the embedded target the chart variable information based on
/// the chart index provided. The PTU variable index is retrieved
/// </summary>
/// <param name="ChartIndex">The chart variable index (starting at 0) and not to equal or exceed the amount
/// of chart recorder variables</param>
/// <param name="VariableIndex">The variable index that is currently part of the chart recorder outputs</param>
/// <returns>CommunicationError.Success (0) if all is well; otherwise another enumeration which is less than 0</returns>
public CommunicationError GetChartIndex(Int16 ChartIndex, ref Int16 VariableIndex)
{
ProtocolPTU.GetChartIndexReq request = new ProtocolPTU.GetChartIndexReq((Byte)ChartIndex);
CommunicationError commError = m_PtuTargetCommunication.SendDataRequestToEmbedded(m_CommDevice, request, m_RxMessage);
if (commError != CommunicationError.Success)
{
return(commError);
}
// Get the desired variable index from the receive message
VariableIndex = BitConverter.ToInt16(m_RxMessage, 8);
// check for endianess
if (m_CommDevice.IsTargetBigEndian())
{
VariableIndex = Utils.ReverseByteOrder(VariableIndex);
}
return(CommunicationError.Success);
}
