GPSEngine

_Dejan_ · January 8th, 2009, 05:48 PM

Hi guys,
Im start with developing new navigation engine plugin which connect trough serial port to GPS device and monitor data, and share data trough CF_GPSInfo command...
This plugin is useable for users Which have Standard version of CF and would like use plugins which need navigation engine(TripComputer, GPSTrack...)
I must add only DIRECTION function and I will release first alpha version to test.
Can someone help me how can I get DIRECTION from NMEA strings?

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This plugin is useable for users which have Standard version of CF and would like use plugins which need navigation engine, TripComputer, GPSTrack and many others plugin which take GPS data from CF_GPSInfo methode...
It support next data trough CF_GPSInfo "request":
"ALTITUDE"
"LATITUDE"
"LONGITUDE"
"DIRECTION"
"LOCKEDSATELLITES"
"SPEED"

With LogoDashboard plugin you can request same data and few other:
"3DMODE" - Return "0" for NoFix, return 2D for 2D position and return 3D for 3D position
"GPSTIME" - Return GPS date and time
"DATASTATUS" - Return "Fix" if we have satellite fix and return "FixLost" if we doesn't have satellite fix.

Plugin doesn't have setup or any GUI!!!
If you would like enable it you must go into Setup->Navigation
Then you must select correct serial port and baud rate.
In navigation engine you must select "GPSEngine" Save settings and thats is all.

Note:
-You must have at least Centrafuse 2.1 Update 1 (2.1.1215) installed to run this plugin. Plugin is not tested with older version.
-You must have installed .NET 2.0.

Version 2.1.0.0:
-First version of plugin released for public

Version 2.1.0.1:
-Added support for Imperial units

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WuNgUn · January 8th, 2009, 06:19 PM

Beautiful! Looking forward to seeing these plugin's finally working for me...
Thanks D!

Txori82 · January 9th, 2009, 04:21 AM

Good idea!

Zorro · January 9th, 2009, 05:54 AM

Maybe this helps: NMEA data

_Dejan_ · January 9th, 2009, 06:49 AM

zorro thaks for help.
I have NMEA specification... But I need help how to parse/calculate driving direction from it. Like we receive it if we call CF_GPSInfo("DIRECTION")...

Zorro · January 9th, 2009, 07:36 AM

Quote:

Originally Posted by _Dejan_

zorro thaks for help.
I have NMEA specification... But I need help how to parse/calculate driving direction from it. Like we receive it if we call CF_GPSInfo("DIRECTION")...

So, you mean the formated string "N", "W", "E", "S" ... and so on?

First create a string like this:

Code:

 
private readonly string[] directions = new[] { "E", "ESE", "SE", "SSE", "S", "SSW", "SW", "WSW", "W", "WNW", "NW", "NNW", "N", "NNE", "NE", "ENE" };

Then take the degree from VTG and convert it like this:

Code:

 
int dir = (int)(degree/22.5f);
if (dir >= 0 && dir < 16)
   return directions[dir];

_Dejan_ · January 9th, 2009, 07:42 AM

Yes I think about formated string N, S, E, W...
I will try this your option and report if is this what I need...
Thanks.

Regards, _Dejan_

_Dejan_ · January 9th, 2009, 11:16 AM

Ok Im find problem GPS don't send $GPVTG string :S
I receive:
$GPGSA
$GPRMC
$GPGGA
$GPGSV

Any other way?

Zorro · January 9th, 2009, 11:33 AM

Try RMC track angle.

_Dejan_ · January 9th, 2009, 11:49 AM

Thanks again.
I have only one question.
Can I change:

Code:

private readonly string[] directions = new[] { "E", "ESE", "SE", "SSE", "S", "SSW", "SW", "WSW", "W", "WNW", "NW", "NNW", "N", "NNE", "NE", "ENE"};

to

Code:

private readonly string[] directions = new[] { "E", "SE", "SE", "SE", "S", "SW", "SW", "SW", "W", "NW", "NW", "NW", "N", "NE", "NE", "NE" };

? Because CF I think send only two char something like this second option.