// Constructors
public RequestElectricityMeter()
{
byte[] data = new byte[30];
int checksum = 0;
m_reqStrm = new MemoryStream();
System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
byte[] dataHeaderBin =
{
(byte)BravaCodes.Tasks.Request,
(byte)BravaCodes.Functions.ElectricityMeter,
(byte)BravaCodes.ElectricityMeterRecords.CurrentConsumptionDelivered,
(byte)BravaConstants.AllRecords
};
checksum += BravaUtilities.GetCheckSum(dataHeaderBin, 0, dataHeaderBin.Length - 1);
byte[] dataHeaderAsc = enc.GetBytes(BravaUtilities.ByteArrayToHexString(dataHeaderBin));
byte[] dataPayloadBin = new byte[8];
Array.Copy(enc.GetBytes(ZIRODEConstants.ZIRODECODE1), dataPayloadBin, 4);
Array.Copy(BitConverter.GetBytes(BravaUtilities.GetUTCTimeStamp()), 0, dataPayloadBin, 4, 4);
checksum += BravaUtilities.GetCheckSum(dataPayloadBin, 0, dataPayloadBin.Length - 1);
byte[] dataPayloadAsc = enc.GetBytes(BravaUtilities.ByteArrayToHexString(dataPayloadBin));
byte[] checksumAsc = enc.GetBytes(BravaUtilities.ByteArrayToHexString(BitConverter.GetBytes((byte)checksum)));
// Concatenate all blocks to output buffer.
System.Buffer.BlockCopy(dataHeaderAsc, 0, data, 1, 8);
System.Buffer.BlockCopy(dataPayloadAsc, 0, data, 10, 16);
System.Buffer.BlockCopy(checksumAsc, 0, data, 27, 2);
data[0] = 0x01;
data[9] = 0x02;
data[26] = 0x03;
data[29] = 0x04;
m_reqStrm.Write(data, 0, data.Length);
}
// Methods
/// <summary>
/// Parses Result Stream from PM9 system.
/// </summary>
public void ParseResultStream()
{
// Copy response stream into a more versatile memory stream.
byte[] bufferBytes = new byte[m_resStrm.Length];
m_resStrm.Seek(0, SeekOrigin.Begin);
m_resStrm.Read(bufferBytes, 0, (int)m_resStrm.Length);
MemoryStream resMemStr = new MemoryStream();
int bytesRead;
byte[] headerbytes = null;
byte[] recordSetHeaderBytes = null;
ArrayList recordSetBytes = new ArrayList();
#region Test Debug Code
//MemoryStream resMemStr = new MemoryStream();
//System.Xml.XmlDocument ResultXML;
//FileStream fs = File.Open(@"C:\Buffer\Reply_PM9_1.bin", FileMode.Open, FileAccess.Read);
//bufferBytes = new byte[fs.Length];
//fs.Seek(0, SeekOrigin.Begin);
//bytesRead = fs.Read(bufferBytes, 0, (int)fs.Length);
//fs.Close();
#endregion
#region Deserialise
// Now we have a byte array of the stream with tranmission markers and data in ASCII hex.
// Now validate transmission Markers are all there.
// quick and simple method... not optimal ram usage ...
int indexSOH = Array.IndexOf(bufferBytes, (byte)0x01);
int indexSTX = Array.IndexOf(bufferBytes, (byte)0x02);
int indexEOT = Array.IndexOf(bufferBytes, (byte)0x04);
int indexCR1 = Array.IndexOf(bufferBytes, (byte)0x0d);
// check existence and relative position.
if ((indexSOH >= 0) && (indexSTX == indexSOH + 9) && (indexCR1 > indexSTX) && (indexEOT > indexCR1))
{
// markers exist and are correct in relation to each other.
// Remove markers and de-serialise into seperate binary arrays.
// get different sections in binary;
headerbytes = BravaUtilities.HexBytesToByteArray(bufferBytes, indexSOH + 1, 4);
recordSetHeaderBytes = BravaUtilities.HexBytesToByteArray(bufferBytes, indexSTX + 1, (indexCR1 - 1 - indexSTX) / 2);
// Check if correct transaction.
if (headerbytes[0] == 0x03 && headerbytes[1] == 0x01 && headerbytes[2] == 0x01)
{
int numRecords = headerbytes[3];
int recordStart = indexCR1 + 1;
// find next record end marker
int recordEnd;
for (int n = 0; n < numRecords; n++)
{
recordEnd = Array.IndexOf(bufferBytes, (byte)0x0d, recordStart);
byte[] recordBytes = BravaUtilities.HexBytesToByteArray(bufferBytes, recordStart, (recordEnd - recordStart) / 2);
recordSetBytes.Add(recordBytes);
recordStart = recordEnd + 1;
}
}
}
#endregion
#region Parse To XML
// Now parse the different byte sections into an XML document.
XmlTextWriter writer = new XmlTextWriter(resMemStr, Encoding.UTF8);
writer.Formatting = Formatting.Indented;
writer.WriteStartDocument();
writer.WriteStartElement("Transaction", "BravaSystem.Communication");
writer.WriteStartElement("Response");
writer.WriteStartElement("Header");
writer.WriteAttributeString("Task", XmlConvert.ToString(headerbytes[0]));
writer.WriteAttributeString("Function", XmlConvert.ToString(headerbytes[1]));
writer.WriteAttributeString("RecordType", XmlConvert.ToString(headerbytes[2]));
writer.WriteAttributeString("RecordCount", XmlConvert.ToString(headerbytes[3]));
writer.WriteEndElement(); // End "Header"
writer.WriteStartElement("Data");
writer.WriteAttributeString("RecordCount", XmlConvert.ToString(headerbytes[3]));
writer.WriteAttributeString("UTCTime", BravaUtilities.GetUTCTime(BitConverter.ToUInt32(recordSetHeaderBytes, 4)).ToString());
// Now Loop through all the records.
foreach (byte[] recordBytes in recordSetBytes)
{
writer.WriteStartElement("Record");
writer.WriteAttributeString("RecordType", XmlConvert.ToString(recordBytes[0]));
writer.WriteAttributeString("ZBNode", XmlConvert.ToString(recordBytes[1]));
writer.WriteAttributeString("RSSI", XmlConvert.ToString(recordBytes[2]));
writer.WriteAttributeString("DeviceID", XmlConvert.ToString(recordBytes[3]));
writer.WriteAttributeString("UnitSerialNumber", XmlConvert.ToString(BitConverter.ToUInt32(recordBytes, 4)));
writer.WriteAttributeString("Reading1", XmlConvert.ToString(BitConverter.ToUInt32(recordBytes, 8)));
writer.WriteAttributeString("TimeStamp1", XmlConvert.ToString(BitConverter.ToUInt16(recordBytes, 12)));
writer.WriteAttributeString("Reading2", XmlConvert.ToString(BitConverter.ToUInt32(recordBytes, 14)));
writer.WriteAttributeString("TimeStamp2", XmlConvert.ToString(BitConverter.ToUInt16(recordBytes, 18)));
writer.WriteAttributeString("Reading3", XmlConvert.ToString(BitConverter.ToUInt32(recordBytes, 20)));
writer.WriteAttributeString("TimeStamp3", XmlConvert.ToString(BitConverter.ToUInt16(recordBytes, 24)));
writer.WriteAttributeString("Reading4", XmlConvert.ToString(BitConverter.ToUInt32(recordBytes, 26)));
writer.WriteAttributeString("TimeStamp4", XmlConvert.ToString(BitConverter.ToUInt16(recordBytes, 30)));
writer.WriteEndElement(); // End "Record"
}
writer.WriteEndElement(); // End "Data"
writer.WriteEndElement(); // End "Response"
writer.WriteEndElement(); // End "Transaction"
writer.WriteEndDocument();
writer.Flush();
#endregion
ResultXML = new XmlDocument();
resMemStr.Seek(0, SeekOrigin.Begin);
ResultXML.Load(resMemStr);
writer.Close();
// DEBUG:
System.Diagnostics.Debug.WriteLine(ResultXML.OuterXml);
}