private void SetGps()
{
GpsMessage gps = this.ga.Gps;
if (gps != null)
{
double lat = gps.latitude.V;
double lon = gps.longitude.V;
double utmx = gps.pos.getUtmX();
double utmy = gps.pos.getUtmY();
double gndspeed = gps.gndSpeed.V;
double course = gps.trackAngle.V;
if (InvokeRequired)
{
this.Invoke(new MethodInvoker(SetAdc));
return;
}
this.LatText.Text = lat.ToString("0.0000000");
this.LonText.Text = lon.ToString("0.0000000");
this.UtmXText.Text = utmx.ToString("0");
this.UtmYText.Text = utmy.ToString("0");
this.GndSpeedText.Text = gndspeed.ToString("0");
this.CourseText.Text = course.ToString("0");
}
}
public GsvStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Gsv)
{
// Example of data fields:
// "3", "1", "12", "01", "05", "060", "18", "02", "17", "259", "43", "04", "56", "287", "28", "09", "08", "277", "28"
// "3", "2", "12", "10", "34", "195", "46", "13", "08", "125", "45", "17", "67", "014", "", "20", "32", "048", "24"
// "3", "3", "12", "23", "13", "094", "48", "24", "04", "292", "24", "28", "49", "178", "46", "32", "06", "037", "22"
// or
// "1", "1", "00"
NumberOfMessages = GpsValueParser.ParseNullableInt(message.DataFields[0]) ?? 1;
SequenceNumber = GpsValueParser.ParseNullableInt(message.DataFields[1]) ?? 1;
TotalSatellitesInView = GpsValueParser.ParseNullableInt(message.DataFields[2]) ?? 0;
var satellites = new List <SatelliteInView>();
int satelliteDataFieldStartIndex = 3;
while (satelliteDataFieldStartIndex < message.DataFields.Length)
{
int satelliteId = GpsValueParser.ParseNullableInt(message.DataFields[satelliteDataFieldStartIndex++]) ?? 0;
int elevation = GpsValueParser.ParseNullableInt(message.DataFields[satelliteDataFieldStartIndex++]) ?? 0;
int azimuth = GpsValueParser.ParseNullableInt(message.DataFields[satelliteDataFieldStartIndex++]) ?? 0;
int snr = GpsValueParser.ParseNullableInt(message.DataFields[satelliteDataFieldStartIndex++]) ?? 0;
satellites.Add(new SatelliteInView(satelliteId, elevation, azimuth, snr));
}
Satellites = satellites.ToArray();
}
private void ProcessGpsMessage(GpsMessage gpsMsg)
{
if (gpsMsg == null)
{
return;
}
try
{
SmartDevice device = _gpsDevices.Find(x => x.DeviceId == gpsMsg.DeviceId);
if (device != null)
{
device.Latitude = gpsMsg.Latitude;
device.Longitude = gpsMsg.Longitude;
BlobTable <SmartDevice> .Update(device);
}
#if DEBUG
Console.WriteLine(Scf.Net.IotHub.MessageHelper.ToString(gpsMsg));
#endif
_gpsQueue.SendMessage(Scf.Net.IotHub.MessageHelper.ToString(gpsMsg));
}
catch (Exception ex)
{
}
}
public static void handleGps(GpsMessage msg)
{
Console.WriteLine("==============================================================================");
Console.WriteLine("imei: {0}", msg.device.imei);
Console.WriteLine("message_type: {0}", msg.message_type);
Console.WriteLine("gateway: {0}", msg.gateway);
Console.WriteLine("port: {0}", msg.port);
Console.WriteLine("transmission: {0}", msg.transmission);
Console.WriteLine("gsm.signal_str: {0}", msg.gsm[0].signal_str);
Console.WriteLine("gsm.status: {0}", String.Join(", ", msg.gsm[0].status));
Console.WriteLine("sims.msisdn: {0}", msg.sims[0].msisdn);
Console.WriteLine("sims.iccid: {0}", msg.sims[0].iccid);
Console.WriteLine("gps.timestamp: {0}", msg.gps.timestamp.ToUniversalTime().ToString("yyyy-MM-dd HH:mm:ss"));
Console.WriteLine("gps.latitude: {0}", msg.gps.latitude);
Console.WriteLine("gps.longitude: {0}", msg.gps.longitude);
Console.WriteLine("gps.altitude: {0}", msg.gps.altitude);
Console.WriteLine("gps.speed: {0}", msg.gps.speed);
Console.WriteLine("gps.heading: {0}", msg.gps.heading);
Console.WriteLine("gps.satellites: {0}", msg.gps.satellites);
Console.WriteLine("gps.activity: {0}", msg.gps.activity);
Console.WriteLine("gps.odometer: {0}", msg.gps.odometer);
Console.WriteLine("gps.trip_odo: {0}", msg.gps.trip_odo);
Console.WriteLine("gps.fix: {0}", String.Join(", ", msg.gps.fix));
Console.WriteLine("gps.dop: hdop: {0} vdop: {1} pdop: {2} tdop: {3}", msg.gps.hdop, msg.gps.vdop, msg.gps.pdop, msg.gps.tdop);
foreach (var msg_event in msg.events)
{
// The first element in the list is always the event code
Console.WriteLine("event: {0}", msg_event[0]);
foreach (var event_field in msg_event)
{
// Any additional elements contains event data and are defined as IList's with a
// count of 2 where the first element is the field name and the second element is
// the value, e.g.:
// [ "HARSH_EVENT:ACCIDENT", [ "x", 15.3 ], ["y", 20.8 ], [ "z", 17.4 ] ]
if (event_field is IList && event_field.Count == 2)
{
Console.WriteLine(" field: {0}={1}", event_field[0], event_field[1]);
}
}
}
foreach (var sensor in msg.sensors)
{
Console.WriteLine("sensor: {0} = {1}", sensor[0], sensor[1]);
}
foreach (var pid in msg.obd_ii.mode_01)
{
Console.WriteLine("OBD PID: {0} = {1}", pid[0], pid[1]);
}
Console.WriteLine("==============================================================================");
}
public bool OnMessage(object sender, ReceivedMessageEventArgs args)
{
GpsMessage msg = args.Message as GpsMessage;
if (msg != null)
{
UpdateLocation(msg.DeviceId, msg.Latitude, msg.Longitude);
}
return(true);
}
public VtgStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Vtg)
{
// Example of data fields:
// "0.0", "T", "", "M", "0.0", "N", "0.1", "K", "A"
CourseOverGround = GpsValueParser.ParseNullableDouble(message.DataFields[0]);
SpeedInKnots = GpsValueParser.ParseNullableDouble(message.DataFields[4]);
SpeedInKmPerH = GpsValueParser.ParseNullableDouble(message.DataFields[6]);
PositioningMode = GpsValueParser.ParsePositioningMode(message.DataFields[8]);
}
public TxtStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Txt)
{
// Example of data fields:
// "01", "01", "02", "ANTSTATUS=OK"
NumberOfMessages = GpsValueParser.ParseNullableInt(message.DataFields[0]) ?? 1;
SequenceNumber = GpsValueParser.ParseNullableInt(message.DataFields[1]) ?? 1;
Severity = GpsValueParser.ParseTextMessageSeverity(message.DataFields[2]);
TextMessage = message.DataFields[3];
}
public bool OnMessage(object sender, ReceivedMessageEventArgs args)
{
GpsMessage msg = args.Message as GpsMessage;
if (msg != null)
{
_mapData.UpdateLocation(msg.DeviceId, msg.Latitude, msg.Longitude);
}
//RedirectToAction("Index", "GpsTracking");
return(true);
}
public GllStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Gll)
{
// Example of data fields:
// "3110.2908", "N", "12123.2348", "E", "041139.000", "A", "A"
Latitude = GpsValueParser.ParseLatitude(message.DataFields[0], message.DataFields[1]);
Longitude = GpsValueParser.ParseLongitude(message.DataFields[2], message.DataFields[3]);
UtcTimeOfDay = GpsValueParser.ParseUtcTime(message.DataFields[4]);
DataValid = message.DataFields[5] == "A";
PositioningMode = GpsValueParser.ParsePositioningMode(message.DataFields[6]);
}
public RmcStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Rmc)
{
// Example of data fields:
// "013732.000", "A", "3150.7238", "N", "11711.7278", "E", "0.00", "0.00", "220413", "", "", "A"
UtcDateTime = GpsValueParser.ParseUtcDateTime(message.DataFields[8] + message.DataFields[0]);
DataValid = message.DataFields[1] == "A";
Latitude = GpsValueParser.ParseLatitude(message.DataFields[2], message.DataFields[3]);
Longitude = GpsValueParser.ParseLongitude(message.DataFields[4], message.DataFields[5]);
Speed = GpsValueParser.ParseNullableDouble(message.DataFields[6]);
CourseOverGround = GpsValueParser.ParseNullableDouble(message.DataFields[7]);
PositioningMode = GpsValueParser.ParsePositioningMode(message.DataFields[11]);
}
public static bool TryDeserialize(string packetText, out GpsMessage message)
{
if (packetText == null)
{
message = null;
return(false);
}
packetText = packetText.Trim();
int preambleIndex = packetText.LastIndexOf('$');
if (preambleIndex > 0)
{
packetText = packetText.Substring(preambleIndex);
}
if (string.IsNullOrEmpty(packetText) ||
(packetText.Length < 4) ||
(packetText[0] != '$') ||
(packetText[packetText.Length - 3] != '*'))
{
message = null;
return(false);
}
string checkSumText = packetText.Substring(packetText.Length - 2, 2);
byte checkSum;
if (!byte.TryParse(checkSumText, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out checkSum))
{
message = null;
return(false);
}
string messageText = packetText.Substring(1, packetText.Length - 4);
byte actualCheckSumByte = messageText.Aggregate <char, byte>(0, (current, t) => (byte)(current ^ (byte)t));
if (actualCheckSumByte != checkSum)
{
message = null;
return(false);
}
string[] fields = messageText.Split(',');
message = new GpsMessage(fields[0], fields.Skip(1).ToArray());
return(true);
}
public GgaStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Gga)
{
// Example of data fields:
// "015540.000", "3150.68378", "N", "11711.93139", "E", "1", "17", "0.6", "0051.6", "M", "0.0", "M", "", ""
UtcTimeOfDay = GpsValueParser.ParseUtcTime(message.DataFields[0]);
Latitude = GpsValueParser.ParseLatitude(message.DataFields[1], message.DataFields[2]);
Longitude = GpsValueParser.ParseLongitude(message.DataFields[3], message.DataFields[4]);
FixStatus = GpsValueParser.ParseGgaFixStatus(message.DataFields[5]);
NumberOfSatellites = GpsValueParser.ParseNullableInt(message.DataFields[6]);
HorizontalDilutioOfPrecision = GpsValueParser.ParseNullableDouble(message.DataFields[7]);
Altitude = GpsValueParser.ParseNullableDouble(message.DataFields[8]);
GeoIdSeparation = GpsValueParser.ParseNullableDouble(message.DataFields[10]);
DgpsAge = GpsValueParser.ParseNullableDouble(message.DataFields[12]);
DgpsStateId = GpsValueParser.ParseNullableDouble(message.DataFields[13]);
}
public GsaStandardGpsMessage(GpsMessage message)
: base(StandardGpsMessageKind.Gsa)
{
// Example of data fields:
// "A", "3", "14", "06", "16", "31", "23", "", "", "", "", "", "", "", "1.66", "1.42", "0.84"
Mode = GpsValueParser.ParseGsaMode(message.DataFields[0]);
FixStatus = GpsValueParser.ParseGsaFixStatus(message.DataFields[1]);
SatelliteUsedPerChannelArray = new int?[12];
for (int i = 0; i < SatelliteUsedPerChannelArray.Length; i++)
{
SatelliteUsedPerChannelArray[i] = GpsValueParser.ParseNullableInt(message.DataFields[2 + i]);
}
PositionDilutionOfPrecision = GpsValueParser.ParseNullableDouble(message.DataFields[14]);
HorizontalDilutionOfPrecision = GpsValueParser.ParseNullableDouble(message.DataFields[15]);
VerticalDilutionOfPrecision = GpsValueParser.ParseNullableDouble(message.DataFields[16]);
}
public static byte[] Serialize(GpsMessage message)
{
string messageText = message.MessageId + "," + string.Join(",", message.DataFields);
byte[] messageBytes = Encoding.ASCII.GetBytes(messageText);
byte checksumByte = messageBytes.Aggregate <byte, byte>(0, (current, messageByte) => (byte)(current ^ messageByte));
string checkSum = checksumByte.ToString("X2");
var packetBytes = new byte[messageBytes.Length + 6];
packetBytes[0] = (byte)'$';
Array.Copy(messageBytes, 0, packetBytes, 1, messageBytes.Length);
packetBytes[messageBytes.Length + 1] = (byte)'*';
packetBytes[messageBytes.Length + 2] = (byte)checkSum[0];
packetBytes[messageBytes.Length + 3] = (byte)checkSum[1];
packetBytes[messageBytes.Length + 4] = (byte)'\r';
packetBytes[messageBytes.Length + 5] = (byte)'\n';
return(packetBytes);
}
public void StartGpsSimulation(GpsSimulationInfo info)
{
if (info == null)
{
return;
}
GpsInfo = info;
GpsInfo.Running = true;
Task.Run(async() =>
{
int counter = 0;
while (GpsInfo.Running)
{
GpsMessage msg = new GpsMessage();
msg.Id = msgcounter.ToString();
msg.DeviceId = deviceId;
if (counter < GpsInfo.Country.Count)
{
msg.Latitude = GpsInfo.Country[counter].Latitude;
msg.Longitude = GpsInfo.Country[counter].Longitude;
msgSendQueue.Enqueue(msg);
counter++;
}
else
{
counter = 0;
}
await Task.Delay(GpsInfo.Interval);
msgcounter++;
}
});
}
public static bool TryConvertToStandardGpsMessage(GpsMessage message, out StandardGpsMessage standardGpsMessage)
{
switch (message.MessageId)
{
case "GPRMC":
standardGpsMessage = new RmcStandardGpsMessage(message);
return(true);
case "GPVTG":
standardGpsMessage = new VtgStandardGpsMessage(message);
return(true);
case "GPGGA":
standardGpsMessage = new GgaStandardGpsMessage(message);
return(true);
case "GPGSA":
standardGpsMessage = new GsaStandardGpsMessage(message);
return(true);
case "GPGSV":
standardGpsMessage = new GsvStandardGpsMessage(message);
return(true);
case "GPGLL":
standardGpsMessage = new GllStandardGpsMessage(message);
return(true);
case "GPTXT":
standardGpsMessage = new TxtStandardGpsMessage(message);
return(true);
}
standardGpsMessage = null;
return(false);
}
public async Task SendMessage(GpsMessage message)
{
IBuffer txBuffer = GpsMessageSerializer.Serialize(message).AsBuffer();
await _serialDevice.OutputStream.WriteAsync(txBuffer);
}
/// <summary>
/// Send a message to the GPS chip.
/// </summary>
/// <param name="message">The message to be sent.</param>
/// <returns></returns>
public Task SendMessage(GpsMessage message)
{
return(_gpsMessageHandler.SendMessage(message));
}
internal GpsMessageEventArgs(GpsMessage message, DateTime systemReceivedUtcDateTime)
{
Message = message;
SystemReceivedUtcDateTime = systemReceivedUtcDateTime;
}
