public void ReadGprmcWithNmeaReader()
{
using (MemoryStream mStrm = new MemoryStream(Encoding.ASCII.GetBytes("$GPRMC,220516.000,A,5133.8200,N,00042.2400,W,173.8,231.8,130604,4.2,W*67")))
{
NmeaReader nr = new NmeaReader(mStrm);
NmeaSentence ns = nr.ReadTypedSentence();
GprmcSentence sentence = ns as GprmcSentence;
Assert.AreNotEqual(null, sentence);
if (sentence == null)
{
return;
}
Assert.AreEqual("$GPRMC,220516.000,A,5133.8200,N,00042.2400,W,173.8,231.8,130604,4.2,W*67", sentence.Sentence);
Latitude l = new Latitude(51, 33.82, LatitudeHemisphere.North);
Longitude l2 = new Longitude(0, 42.24, LongitudeHemisphere.West);
Position p = new Position(l, l2);
DateTime date = new DateTime(2004, 06, 13, 22, 05, 16, DateTimeKind.Utc);
Speed s = new Speed(173.8, SpeedUnit.Knots);
Azimuth a = new Azimuth(231.8);
Longitude mv = new Longitude(4.2, LongitudeHemisphere.West);
Assert.AreEqual(FixStatus.Fix, sentence.FixStatus);
Assert.AreEqual(l, sentence.Position.Latitude);
Assert.AreEqual(l2, sentence.Position.Longitude);
Assert.AreEqual(s, sentence.Speed);
Assert.AreEqual(a, sentence.Bearing);
Assert.AreEqual(mv, sentence.MagneticVariation);
Assert.AreEqual(date, sentence.UtcDateTime);
}
}
private void menuAnalyze_Click(object sender, EventArgs e)
{
// Make a log file name from the name of the device
string logName = _CurrentDevice.Name + ".txt";
// Remove any invalid characters
foreach (char badChar in Path.GetInvalidPathChars())
{
logName = logName.Replace(badChar, '_');
}
// Also remove colons
logName = logName.Replace(":", String.Empty);
// Are they requesting a log?
if (menuAnalyze.Text == "View Log")
{
// Yes. Create a form for the log
LogForm form = new LogForm();
// Tell the form which device to use
form.Device = _CurrentDevice;
// Read in the log file
StreamReader reader = File.OpenText(logName);
form.Body = reader.ReadToEnd();
reader.Close();
// Show the log file form
form.Show();
Application.DoEvents();
return;
}
/* This feature will examine the NMEA data from a device and
* report on what features it supports.
*/
menuAnalyze.Enabled = false;
tabControl1.SelectedIndex = 1;
// Show a busy cursor until analysis completes
Cursor.Current = Cursors.WaitCursor;
Application.DoEvents();
StreamWriter logWriter = null;
try
{
// Open the device
_CurrentDevice.Open();
// Create a log file for this device
logWriter = new StreamWriter(logName);
// Write a header
logWriter.WriteLine("------------------------------------------------------------------------------------------------------------------------------");
logWriter.WriteLine("GPS.NET 3.0 Diagnostics Copyright © 2009 GeoFrameworks, LLC");
logWriter.WriteLine(" http://www.geoframeworks.com");
logWriter.WriteLine("");
logWriter.WriteLine("A. RAW NMEA DATA FOR " + _CurrentDevice.Name.ToUpper());
logWriter.WriteLine("");
// Wrap the device's raw data stream in an NmeaReader
NmeaReader stream = new NmeaReader(_CurrentDevice.BaseStream);
bool isPositionSupported = false;
bool isAltitudeSupported = false;
bool isBearingSupported = false;
bool isPrecisionSupported = false;
bool isSpeedSupported = false;
bool isSatellitesSupported = false;
// Now analyze it for up to 100 sentences
for (int index = 0; index < 100; index++)
{
// Read a valid sentence
NmeaSentence sentence = stream.ReadTypedSentence();
// Write it to the log file
logWriter.WriteLine(sentence.Sentence);
// Get the command word for the sentence
if (!sentenceListBox.Items.Contains(sentence.CommandWord))
{
sentenceListBox.Items.Add(sentence.CommandWord);
}
// What features are supported?
IPositionSentence positionSentence = sentence as IPositionSentence;
if (positionSentence != null)
{
isPositionSupported = true;
}
IAltitudeSentence altitudeSentence = sentence as IAltitudeSentence;
if (altitudeSentence != null)
{
isAltitudeSupported = true;
}
IBearingSentence bearingSentence = sentence as IBearingSentence;
if (bearingSentence != null)
{
isBearingSupported = true;
}
IHorizontalDilutionOfPrecisionSentence hdopSentence = sentence as IHorizontalDilutionOfPrecisionSentence;
if (hdopSentence != null)
{
isPrecisionSupported = true;
}
ISpeedSentence speedSentence = sentence as ISpeedSentence;
if (speedSentence != null)
{
isSpeedSupported = true;
}
ISatelliteCollectionSentence satellitesSentence = sentence as ISatelliteCollectionSentence;
if (satellitesSentence != null)
{
isSatellitesSupported = true;
}
// Is everything supported? If so, we have a healthy GPS device. It's okay to exit
if (isPositionSupported && isAltitudeSupported && isBearingSupported && isPrecisionSupported && isSatellitesSupported && isSpeedSupported)
{
break;
}
}
// Summarize the log
logWriter.WriteLine("");
logWriter.WriteLine("B. SUMMARY");
logWriter.WriteLine("");
// Set images based on supported features
if (isPositionSupported)
{
logWriter.WriteLine(" Latitude and longitude are supported.");
pictureBoxPosition.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING Latitude and longitude are not supported.");
pictureBoxPosition.Image = imageList1.Images[1];
}
if (isAltitudeSupported)
{
logWriter.WriteLine(" Altitude is supported.");
pictureBoxAltitude.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING Altitude is not supported.");
pictureBoxAltitude.Image = imageList1.Images[1];
}
if (isBearingSupported)
{
logWriter.WriteLine(" Bearing is supported.");
pictureBoxBearing.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING Bearing is not supported.");
pictureBoxBearing.Image = imageList1.Images[1];
}
if (isPrecisionSupported)
{
logWriter.WriteLine(" Dilution of Precision is supported.");
pictureBoxPrecision.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING Dilution of Precision is not supported.");
pictureBoxPrecision.Image = imageList1.Images[1];
}
if (isSpeedSupported)
{
logWriter.WriteLine(" Speed is supported.");
pictureBoxSpeed.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING Speed is not supported.");
pictureBoxSpeed.Image = imageList1.Images[1];
}
if (isSatellitesSupported)
{
logWriter.WriteLine(" GPS satellite data is supported.");
pictureBoxSatellites.Image = imageList1.Images[0];
}
else
{
logWriter.WriteLine("WARNING GPS satellite data is not supported.");
pictureBoxSatellites.Image = imageList1.Images[1];
}
logWriter.WriteLine("------------------------------------------------------------------------------------------------------------------------------");
logWriter.Close();
// Close the device
_CurrentDevice.Close();
// Restore the cursor
Cursor.Current = Cursors.Default;
// change "Analyze" to "View Log"
menuAnalyze.Text = "View Log";
// Let them know which features are supported by their device
if (isPositionSupported && isAltitudeSupported && isBearingSupported && isPrecisionSupported && isSatellitesSupported && isSpeedSupported)
{
MessageBox.Show(_CurrentDevice.Name + " fully supports all real-time GPS data.", "No Problems", MessageBoxButtons.OK, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1);
}
else
{
MessageBox.Show(_CurrentDevice.Name + " does not appear to fully support real-time GPS data. Try another analysis. If the same problem persists, some NMEA sentences may need to be activated on the device.", "Problems Found", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1);
}
}
catch (Exception ex)
{
// Close the device
_CurrentDevice.Close();
if (logWriter != null)
{
logWriter.Close();
}
// Restore the cursor
Cursor.Current = Cursors.Default;
// Explain the error
MessageBox.Show(ex.Message, "Cannot Analyze", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1);
}
finally
{
// Re-enable the menu
menuAnalyze.Enabled = true;
}
}