public void VesselHeadingMessageLoadsProperties()
{
N2kMessageEncoded encodedMessage = new N2kMessageEncoded
{
PGN = 127250,
Priority = 2,
Destination = 255,
Source = 58,
Milliseconds = 45,
Payload = new byte[] {0xFF, 0x00, 0x00, 0xFF, 0x7F, 0xFF, 0x7F, 0xFD}
};
VesselHeading vesselHeading = new VesselHeading(encodedMessage);
Assert.AreEqual(255, vesselHeading.SID);
Assert.AreEqual(0, vesselHeading.Heading);
Assert.AreEqual(187.74108073051684, vesselHeading.Deviation, double.Epsilon);
Assert.AreEqual(187.74108073051684, vesselHeading.Variation, double.Epsilon);
Assert.AreEqual(HeadingType.True, vesselHeading.HeadingReference);
}
public void VesselHeadingMessageLoadsProperties()
{
N2kMessageEncoded encodedMessage = new N2kMessageEncoded
{
PGN = 127250,
Priority = 2,
Destination = 255,
Source = 58,
Milliseconds = 45,
Payload = new byte[] { 0xFF, 0x00, 0x00, 0xFF, 0x7F, 0xFF, 0x7F, 0xFD }
};
VesselHeading vesselHeading = new VesselHeading(encodedMessage);
Assert.AreEqual(255, vesselHeading.SID);
Assert.AreEqual(0, vesselHeading.Heading);
Assert.AreEqual(187.74108073051684, vesselHeading.Deviation, double.Epsilon);
Assert.AreEqual(187.74108073051684, vesselHeading.Variation, double.Epsilon);
Assert.AreEqual(HeadingType.True, vesselHeading.HeadingReference);
}
void OnDeviceMessageReceived(object sender, MessageReceivedEventArgs e)
{
// The message has already been converted from Can Id to ISO-11783 by the Actisense device.
if (e.MessageType == MessageType.NMEA2000)
{
var n2kMessage = new N2kMessageEncoded
{
// leave parenthesis to prevent unwanted bitshifting
Priority = e.Data[(int)ActisenseN2kMessageFormat.Priority],
PGN = (e.Data[(int)ActisenseN2kMessageFormat.PGNLSB] +
(e.Data[(int)ActisenseN2kMessageFormat.PGNMiddle] << 8) +
(e.Data[(int)ActisenseN2kMessageFormat.PGNMSB] << 16)),
Destination = e.Data[(int)ActisenseN2kMessageFormat.Destination],
Source = e.Data[(int)ActisenseN2kMessageFormat.Source],
Milliseconds =
(e.Data[(int)ActisenseN2kMessageFormat.TimeStampLSB] +
(e.Data[(int)ActisenseN2kMessageFormat.TimeStamp2] << 8) +
(e.Data[(int)ActisenseN2kMessageFormat.TimeStamp3] << 16) +
(e.Data[(int)ActisenseN2kMessageFormat.TimeStampMSB] << 32))
};
int payloadLength = e.Data[(int)ActisenseN2kMessageFormat.PayloadLength];
byte[] payload = new byte[payloadLength];
// could check there are enough bytes...
if (e.Data.Length - (int)ActisenseN2kMessageFormat.PayloadStart < payloadLength)
{
payloadLength = e.Data.Length - (int)ActisenseN2kMessageFormat.PayloadStart;
}
Array.Copy(e.Data, (int)ActisenseN2kMessageFormat.PayloadStart, payload, 0, payloadLength);
n2kMessage.Payload = payload;
var handler = N2kMessageParsed;
if (handler != null)
{
handler(this, new N2kMessageEventArgs(n2kMessage));
}
}
}
public void BasicMessageParse()
{
byte[] fakeData = new byte[]
{
// header information
0x02, 0x12, 0xF1, 0x01, 0xFF, 0x3A, 0x2D, 0x00, 0x00, 0x00, 0x08,
// payload
0xFF, 0x00, 0x00, 0xFF, 0x7F, 0xFF, 0x7F, 0xFD
};
byte[] expectedPayload = new byte[] { 0xFF, 0x00, 0x00, 0xFF, 0x7F, 0xFF, 0x7F, 0xFD };
FakeDevice fakeDevice = new FakeDevice();
ActisenseMessageParser parser = new ActisenseMessageParser(fakeDevice);
var messagesParsed = new List <N2kMessageEventArgs>();
parser.N2kMessageParsed += ((sender, e) => messagesParsed.Add(e));
Assert.AreEqual(0, messagesParsed.Count);
fakeDevice.RaiseMessageReceivedEvent(fakeData);
Assert.AreEqual(1, messagesParsed.Count);
N2kMessageEncoded result = messagesParsed[0].Message;
Assert.AreEqual(2, result.Priority);
Assert.AreEqual(127250, result.PGN);
Assert.AreEqual(255, result.Destination);
Assert.AreEqual(58, result.Source);
Assert.AreEqual(45, result.Milliseconds);
Assert.AreEqual(8, result.PayloadLength);
Assert.IsTrue(expectedPayload.SequenceEqual(result.Payload), "arrays should be identical");
}
public N2kMessageEventArgs(N2kMessageEncoded message)
{
Message = message;
}
