/// <summary>
/// Read table data from the meter.
/// </summary>
/// <remarks>
/// With commmand R6 data can be read one row at the time and it is parsed on the fly.
/// With other commands all data must first read before data can be parse.
/// </remarks>
/// <param name="media"></param>
/// <param name="wt"></param>
/// <param name="name"></param>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="level"></param>
/// <returns></returns>
public static object[][] ReadTable(Gurux.Common.IGXMedia media, int wt, string name, DateTime start, DateTime end, string parameters, int level, int count, out string[] columns)
{
columns = null;
List <byte> reply = new List <byte>();
string header, frame;
//Read CRC.
ReceiveParameters <byte[]> crc = new ReceiveParameters <byte[]>()
{
Count = 1,
WaitTime = wt
};
List <byte> data = new List <byte>();
data.Add(1);
data.AddRange(GenerateReadTable(name, start, end, parameters, level, count));
data.Add(3);
data.Add(CalculateChecksum(data, 1, data.Count - 1));
lock (media.Synchronous)
{
do
{
List <byte> tmp = new List <byte>(SendData(media, data == null ? null : data.ToArray(), '\0', wt, true, level == 6, false));
data = null;
if (level != 6 && tmp[tmp.Count - 1] == 0x3)
{
crc.Count = 1;
if (!media.Receive(crc))
{
throw new Exception("Failed to receive reply from the device in given time.");
}
tmp.AddRange(crc.Reply);
}
else if (level == 6)
{
if (GetPacket(tmp, true, out header, out frame) == null)
{
throw new Exception("Failed to receive reply from the device in given time.");
}
if (tmp[tmp.Count - 2] == 0x4)
{
//Send ACK if more data is left.
data = new List <byte>();
data.Add(6);
System.Threading.Thread.Sleep(200);
}
}
reply.AddRange(tmp);
}while (reply[reply.Count - 2] != 0x3);
}
int status = 0;
DateTime tm = DateTime.MinValue;
int add = 0;
return(ParseTableData(reply.ToArray(), ref columns, ref status, ref tm, ref add, name));
}
/// <summary>
/// Read DLMS Data from the device.
/// </summary>
/// <remarks>
/// If access is denied return null.
/// </remarks>
/// <param name="data">Data to send.</param>
/// <returns>Received data.</returns>
public byte[] ReadDLMSPacket(byte[] data, int tryCount)
{
if (data == null)
{
return(null);
}
object eop = (byte)0x7E;
//In network connection terminator is not used.
if (m_Cosem.InterfaceType == InterfaceType.Net && Media is GXNet && !Parent.UseRemoteSerial)
{
eop = null;
}
int pos = 0;
bool succeeded = false;
ReceiveParameters <byte[]> p = new ReceiveParameters <byte[]>()
{
AllData = false,
Eop = eop,
Count = 5,
WaitTime = Parent.WaitTime * 1000,
};
lock (Media.Synchronous)
{
if (data != null)
{
Media.Send(data, null);
}
while (!succeeded && pos != 3)
{
succeeded = Media.Receive(p);
if (!succeeded)
{
//Try to read again...
if (++pos != tryCount)
{
//If Eop is not set read one byte at time.
if (p.Eop == null)
{
p.Count = 1;
}
System.Diagnostics.Debug.WriteLine("Data send failed. Try to resend " + pos.ToString() + "/3");
Media.Send(data, null);
continue;
}
string err = "Failed to receive reply from the device in given time.";
GXLogWriter.WriteLog(err, p.Reply);
throw new Exception(err);
}
}
//Loop until whole COSEM packet is received.
while (!m_Cosem.IsDLMSPacketComplete(p.Reply))
{
//If Eop is not set read one byte at time.
if (p.Eop == null)
{
p.Count = 1;
}
if (!Media.Receive(p))
{
//Try to read again...
if (++pos != tryCount)
{
System.Diagnostics.Debug.WriteLine("Data send failed. Try to resend " + pos.ToString() + "/3");
continue;
}
string err = "Failed to receive reply from the device in given time.";
GXLogWriter.WriteLog(err, p.Reply);
throw new Exception(err);
}
}
}
GXLogWriter.WriteLog("Received data", p.Reply);
object errors = m_Cosem.CheckReplyErrors(data, p.Reply);
if (errors != null)
{
object[,] arr = (object[, ])errors;
int error = (int)arr[0, 0];
if (error == -1)
{
//If data is reply to the previous packet sent.
//This might happens sometimes.
if (m_Cosem.IsPreviousPacket(data, p.Reply))
{
return(ReadDLMSPacket(null));
}
else
{
throw new Exception(arr[0, 1].ToString());
}
}
throw new GXDLMSException(error);
}
return(p.Reply);
}
/// <summary>
/// Read DLMS Data from the device.
/// </summary>
/// <remarks>
/// If access is denied return null.
/// </remarks>
/// <param name="data">Data to send.</param>
/// <returns>Received data.</returns>
public void ReadDLMSPacket(byte[] data, int tryCount, GXReplyData reply)
{
if (data == null)
{
return;
}
object eop = (byte)0x7E;
//In network connection terminator is not used.
if (client.InterfaceType == InterfaceType.WRAPPER && media is GXNet && !parent.UseRemoteSerial)
{
eop = null;
}
if (parent.OnTrace != null)
{
parent.OnTrace(parent, "<- " + DateTime.Now.ToLongTimeString() + " " + GXCommon.ToHex(data, true));
//if (data[data.Length - 1] == 0x7E && data[data.Length - 2] == 0xC5 && data[data.Length - 3] == 0x13)
// data[data.Length - 1] = 0x7E;
}
int pos = 0;
bool succeeded = false;
ReceiveParameters <byte[]> p = new ReceiveParameters <byte[]>()
{
AllData = false,
Eop = eop,
Count = 5,
WaitTime = parent.WaitTime * 1000,
};
lock (media.Synchronous)
{
if (data != null)
{
media.Send(data, null);
}
while (!succeeded && pos != 3)
{
succeeded = media.Receive(p);
if (!succeeded)
{
//Try to read again...
if (++pos != tryCount)
{
//If Eop is not set read one byte at time.
if (p.Eop == null)
{
p.Count = 1;
}
System.Diagnostics.Debug.WriteLine("Data send failed. Try to resend " + pos.ToString() + "/3");
media.Send(data, null);
continue;
}
string err = "Failed to receive reply from the device in given time.";
GXLogWriter.WriteLog(err, p.Reply);
throw new Exception(err);
}
}
try
{
//Loop until whole COSEM packet is received.
while (!client.GetData(p.Reply, reply))
{
//If Eop is not set read one byte at time.
if (p.Eop == null)
{
p.Count = 1;
}
if (!media.Receive(p))
{
//Try to read again...
if (++pos != tryCount)
{
System.Diagnostics.Debug.WriteLine("Data send failed. Try to resend " + pos.ToString() + "/3");
continue;
}
string err = "Failed to receive reply from the device in given time.";
GXLogWriter.WriteLog(err, p.Reply);
throw new Exception(err);
}
}
}
catch (Exception ex)
{
GXLogWriter.WriteLog("Received data", p.Reply);
throw ex;
}
}
if (parent.OnTrace != null)
{
parent.OnTrace(parent, "-> " + DateTime.Now.ToLongTimeString() + " " + GXCommon.ToHex(p.Reply, true));
}
GXLogWriter.WriteLog("Received data", p.Reply);
cnt++;
System.Diagnostics.Debug.Write(cnt.ToString());
System.Diagnostics.Debug.Write(" Received data ");
System.Diagnostics.Debug.WriteLine(BitConverter.ToString(p.Reply));
if (reply.Error != 0)
{
if (reply.Error == (int)ErrorCode.Rejected)
{
Thread.Sleep(1000);
ReadDLMSPacket(data, tryCount, reply);
}
else
{
throw new GXDLMSException(reply.Error);
}
}
}
