public static void OnDeviceDataReceieved(object sender, FrameReceivedEventArgs e)
{
N2kFrame n2kFrame = (N2kFrame)e.ReceivedFrame;
CANStreamer stream = sender as CANStreamer;
CANDevice dev = UpdateAddDevice(n2kFrame, stream.Name);
}
public static CANDevice FindDeviceByRule(string searchRule)
{
CANDevice dev = null;
int Source;
UInt64 ID;
try {
if (int.TryParse(searchRule, out Source))
{
_Devices.TryGetValue(Source, out dev);
}
else
{
if (searchRule.Substring(0, 3) == "ID:")
{
ID = Convert.ToUInt64(searchRule.Substring(3), 16);
dev = FindDeviceByID(ID);
}
}
} catch
{
dev = null;
}
return(dev);
}
private static void UpdateDevice(CANDevice dev, N2kFrame n2kFrame)
{
var e = DeviceListChange;
if (dev.UpdateDevice(n2kFrame) && e != null)
{
e();
}
}
private static CANDevice FindDeviceByID(UInt64 ID)
{
CANDevice dev = null;
lock (Lock)
{
int Key = FindDeviceKeyByID(ID);
if (Key != -1)
{
dev = _Devices[Key];
}
}
return(dev);
}
private static CANDevice AddDevice(N2kFrame n2kFrame, string streamName)
{
CANDevice dev = null;
int Source;
if (Int32.TryParse(n2kFrame.Header.Source, out Source))
{
dev = new CANDevice(Source, streamName);
lock (Lock)
{
dev.Source = Source;
_Devices.Add(Source, dev);
}
UpdateDevice(dev, n2kFrame);
}
return(dev);
}
private static CANDevice UpdateAddDevice(N2kFrame n2kFrame, string streamName)
{
CANDevice dev = null;
int Source;
if (Int32.TryParse(n2kFrame.Header.Source, out Source))
{
lock (Lock)
{
// First try to find device with source
_Devices.TryGetValue(Source, out dev);
if (dev != null) // If we found device, just update it
{
UpdateDevice(dev, n2kFrame);
}
else
{
// If device does not exist, check is it on different source.
// Source may change due to address claiming.
if (n2kFrame.Header.PGN == 60928)
{
UInt64 ID = BitConverter.ToUInt64(n2kFrame.Data, 0);
int Key = FindDeviceKeyByID(ID);
if (Key != -1) // We found device, so register it with new key.
{
dev = _Devices[Key];
_Devices.Remove(Key);
_Devices.Remove(Source);
_Devices.Add(Source, dev);
lock (dev.Lock)
{
dev.Source = Source;
}
// Notify that device address has been changed
var e = SourceChange; if (e != null)
{
e();
}
e = DeviceListChange; if (e != null)
{
e();
}
}
else
{
dev = AddDevice(n2kFrame, streamName);
var e = SourceChange; if (e != null)
{
e();
}
}
}
else
{
// We did not find the device, but we can not add it, since message was
// not ISO Address claim PGN 60928
}
} // device was null
}
}
return(dev);
}
