private bool SetProductInformation(N2kFrame n2kFrame)
{
bool changed = false;
lock (Lock)
{
if (!EqualBytesLongUnrolled(PiData, n2kFrame.Data))
{
// We pass here field description and use NMEA2000 definition
N2kVersion = BitConverter.ToUInt16(n2kFrame.Data, 0);
ProductCode = BitConverter.ToUInt16(n2kFrame.Data, 2);
ModelID = N2kASCIIField.ReadString(n2kFrame.Data, 4, 32);
SwCode = N2kASCIIField.ReadString(n2kFrame.Data, 36, 32);
ModelVersion = N2kASCIIField.ReadString(n2kFrame.Data, 68, 32);
ModelSerialCode = N2kASCIIField.ReadString(n2kFrame.Data, 100, 32);
CertificationLevel = n2kFrame.Data[132];
LoadEquivalency = n2kFrame.Data[133];
PiData = n2kFrame.Data.ToArray();
changed = true;
}
}
return(changed);
}
public PGNDefn[] GetPGNInfos()
// Get an array of PGNDefn records, effectively converting from KeesDefinitions
// into our own PGNDefn array
{
PGNDefn[] result = new PGNDefn[KeesPGNDefns.Count()];
int j = 0;
foreach (KeesPGNDefn kPGN in KeesPGNDefns)
{
N2kField[] f = new N2kField[kPGN.Fields != null ? kPGN.Fields.Count() : 0];
if (kPGN.Fields != null)
{
int i = 0;
foreach (KeesField kField in kPGN.Fields)
{
double scale;
if (!double.TryParse(kField.Resolution, NumberStyles.Number, CultureInfo.InvariantCulture, out scale))
{
scale = 1.0;
}
/* // Old method for working out scale...
* switch (kField.Resolution)
* {
* case "0.1":
* scale = 0.1;
* break;
* case "0.01":
* scale = 0.01;
* break;
* case "0.001":
* scale = 0.001;
* break;
* case "0.004":
* scale = 0.004;
* break;
* case "1e-006":
* scale = 1e-6;
* break;
* case "0.0001":
* scale = 0.001;
* break;
* default:
* scale = 1;
* break;
* }
*/
if ((kPGN.PGN == 130842) && (kField.Order == 17) && (kField.Name == "Spare"))
{
// AJM: I think this is probably an unsigned integer based on Description="0=unavailable"
f[i++] = new N2kUIntField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
}
else if (CultureInfo.InvariantCulture.CompareInfo.IndexOf(kField.Name, "Instance", CompareOptions.IgnoreCase) >= 0)
{
f[i++] = new N2kInstanceField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
}
else if ((kField.Name == "SID"))
{
f[i++] = new N2kUIntField {
FormatAs = FormatEnum.SID, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
}
else if ((kField.Name == "PGN"))
{
// We force all PGNBs to be UInt; Kees has one defined as an Integer in 59904, but no such 'Integer' defn in 59392
f[i++] = new N2kUIntField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
}
else if ((kField.Name == "Speed") || (kField.Name == "SOG"))
{
//f[i++] = new SpeedField { DisplayName = kField.DisplayName, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = scale };
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Speed, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = scale
};
}
else if ((kField.Name == "Depth") || (kField.Name == "SOG"))
{
// This is probably unsigned based on FFFFFFFF appearing to mean 'unavailable'
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Length, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = scale
};
}
else
{
switch (kField.Type)
{
case null:
if ((kField.Resolution == null) || (kField.Resolution == ""))
{
f[i++] = new N2kUIntField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
}
else
{
f[i++] = new N2kDblField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = scale
};
}
break;
case "ASCII text":
f[i++] = new N2kASCIIField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
break;
case "Binary data":
case "String with start/stop byte": // We need new type for this
f[i++] = new N2kBinaryField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
break;
case "Manufacturer code":
f[i++] = new N2kBinaryField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
break;
case "Date":
//f[i++] = new DateField { DisplayName = kField.DisplayName, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description };
f[i++] = new N2kUIntField {
FormatAs = FormatEnum.Date, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
break;
case "Degrees": // Degrees changed to angle on Kees?
case "Angle":
if (((kField.Resolution == "0.0001 rad") || (kField.Resolution == "0.0001")))
{
// We convert the units from Radians to Degrees
if (kField.Signed)
{
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Heading, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = 0.0001 * 180 / Math.PI
};
}
else
{
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Heading, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = 0.0001 * 180 / Math.PI
};
}
}
else
{
Console.WriteLine("Unknown Kees Degrees field data");
}
break;
case "IEEE Float":
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Number, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = 32, Description = kField.Description, Scale = scale
};
break;
case "Integer":
f[i++] = new N2kIntField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description
};
break;
case "Latitude":
if (kField.BitLength == 32)
{
// LatField
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Latitude, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = 32, Description = kField.Description, Scale = 1e-7
};
}
else if (kField.BitLength == 64)
{
// LatField
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Latitude, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = 64, Description = kField.Description, Scale = 1e-16
};
}
else
{
Console.WriteLine("Unknown Kees Latitude field data");
}
break;
case "Longitude":
if (kField.BitLength == 32)
{
// LonField
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Longitude, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = 32, Description = kField.Description, Scale = 1e-7
};
}
else if (kField.BitLength == 64)
{
// LonField
f[i++] = new N2kDblField {
FormatAs = FormatEnum.Longitude, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = 64, Description = kField.Description, Scale = 1e-16
};
}
else
{
Console.WriteLine("Unknown Kees Longitude field data");
}
break;
case "Lookup table":
f[i++] = new N2kEnumField {
Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, EnumPairArray = kField.EnumPairArray
};
break;
case "Temperature":
if ((kField.Units == null) || (kField.Units == "K"))
{
// We convert this to Celcius
// f[i++] = new TemperatureField { DisplayName = kField.DisplayName, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description };
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Temperature, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = 0.01, Offset = -273.15
};
}
else
{
Console.WriteLine("Unknown Kees Temperature field data");
}
break;
case "Time":
// TimeField
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Time, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = 0.0001
};
break;
case "Speed":
f[i++] = new N2kUDblField {
FormatAs = FormatEnum.Speed, Name = kField.Name, BitOffset = kField.BitOffset, BitLength = kField.BitLength, Description = kField.Description, Scale = scale
};
break;
default:
Console.WriteLine("Unknown Kees Field");
break;
}
}
}
}
uint ByteLength = 0;
foreach (N2kField field in f)
{
ByteLength = (uint)Math.Max(ByteLength, (int)(((uint)((uint)field.BitOffset + (uint)field.BitLength + 7)) >> 3));
}
if (kPGN.PGN == 129029)
{
ByteLength = 43; // Add 3 extra bytes missing in Kees data
}
result[j++] = new PGNDefn {
PGN = kPGN.PGN, Name = kPGN.Description, Description = "", ByteLength = ByteLength, Fields = f
};
}
return(result);
}
