| 1 | #include "nmea0183.h"
|
|---|
| 2 | #pragma hdrstop
|
|---|
| 3 |
|
|---|
| 4 | /*
|
|---|
| 5 | ** Author: Samuel R. Blackburn
|
|---|
| 6 | ** Internet: sam_blackburn@pobox.com
|
|---|
| 7 | **
|
|---|
| 8 | ** You can use it any way you like as long as you don't try to sell it.
|
|---|
| 9 | **
|
|---|
| 10 | ** Copyright, 1996, Samuel R. Blackburn
|
|---|
| 11 | **
|
|---|
| 12 | ** $Workfile: xte.cpp $
|
|---|
| 13 | ** $Revision: 4 $
|
|---|
| 14 | ** $Modtime: 10/10/98 2:39p $
|
|---|
| 15 | */
|
|---|
| 16 |
|
|---|
| 17 |
|
|---|
| 18 | XTE::XTE()
|
|---|
| 19 | {
|
|---|
| 20 | Mnemonic = "XTE";
|
|---|
| 21 | Empty();
|
|---|
| 22 | }
|
|---|
| 23 |
|
|---|
| 24 | XTE::~XTE()
|
|---|
| 25 | {
|
|---|
| 26 | //Mnemonic.Empty();
|
|---|
| 27 | Empty();
|
|---|
| 28 | }
|
|---|
| 29 |
|
|---|
| 30 | void XTE::Empty( void )
|
|---|
| 31 | {
|
|---|
| 32 | CrossTrackErrorMagnitude = 0.0;
|
|---|
| 33 | DirectionToSteer = LR_Unknown;
|
|---|
| 34 | //CrossTrackUnits.Empty();
|
|---|
| 35 | }
|
|---|
| 36 |
|
|---|
| 37 | BOOL XTE::Parse( const SENTENCE& sentence )
|
|---|
| 38 | {
|
|---|
| 39 | QString field_data;
|
|---|
| 40 |
|
|---|
| 41 | /*
|
|---|
| 42 | ** XTE - Cross-Track Error, Measured
|
|---|
| 43 | **
|
|---|
| 44 | ** 1 2 3 4 5 6
|
|---|
| 45 | ** | | | | | |
|
|---|
| 46 | ** $--XTE,A,A,x.x,a,N,*hh<CR><LF>
|
|---|
| 47 | **
|
|---|
| 48 | ** 1) Status
|
|---|
| 49 | ** V = LORAN-C Blink or SNR warning
|
|---|
| 50 | ** V = general warning flag or other navigation systems when a reliable
|
|---|
| 51 | ** fix is not available
|
|---|
| 52 | ** 2) Status
|
|---|
| 53 | ** V = Loran-C Cycle Lock warning flag
|
|---|
| 54 | ** A = OK or not used
|
|---|
| 55 | ** 3) Cross Track Error Magnitude
|
|---|
| 56 | ** 4) Direction to steer, L or R
|
|---|
| 57 | ** 5) Cross Track Units, N = Nautical Miles
|
|---|
| 58 | ** 6) Checksum
|
|---|
| 59 | */
|
|---|
| 60 |
|
|---|
| 61 | /*
|
|---|
| 62 | ** First we check the checksum...
|
|---|
| 63 | */
|
|---|
| 64 |
|
|---|
| 65 | if ( sentence.IsChecksumBad( 6 ) == True )
|
|---|
| 66 | {
|
|---|
| 67 | SetErrorMessage( "Invalid Checksum" );
|
|---|
| 68 | return( FALSE );
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | /*
|
|---|
| 72 | ** Line has already been checked for checksum validity
|
|---|
| 73 | */
|
|---|
| 74 |
|
|---|
| 75 | IsLoranBlinkOK = sentence.Boolean( 1 );
|
|---|
| 76 | IsLoranCCycleLockOK = sentence.Boolean( 2 );
|
|---|
| 77 | CrossTrackErrorMagnitude = sentence.Double( 3 );
|
|---|
| 78 | DirectionToSteer = sentence.LeftOrRight( 4 );
|
|---|
| 79 | CrossTrackUnits = sentence.Field( 5 );
|
|---|
| 80 |
|
|---|
| 81 | return( TRUE );
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
| 84 | BOOL XTE::Write( SENTENCE& sentence )
|
|---|
| 85 | {
|
|---|
| 86 | /*
|
|---|
| 87 | ** Let the parent do its thing
|
|---|
| 88 | */
|
|---|
| 89 |
|
|---|
| 90 | RESPONSE::Write( sentence );
|
|---|
| 91 |
|
|---|
| 92 | sentence += IsLoranBlinkOK;
|
|---|
| 93 | sentence += IsLoranCCycleLockOK;
|
|---|
| 94 | sentence += CrossTrackErrorMagnitude;
|
|---|
| 95 | sentence += DirectionToSteer;
|
|---|
| 96 | sentence += CrossTrackUnits;
|
|---|
| 97 |
|
|---|
| 98 | sentence.Finish();
|
|---|
| 99 |
|
|---|
| 100 | return( TRUE );
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | const XTE& XTE::operator = ( const XTE& source )
|
|---|
| 104 | {
|
|---|
| 105 | IsLoranBlinkOK = source.IsLoranBlinkOK;
|
|---|
| 106 | IsLoranCCycleLockOK = source.IsLoranCCycleLockOK;
|
|---|
| 107 | CrossTrackErrorMagnitude = source.CrossTrackErrorMagnitude;
|
|---|
| 108 | DirectionToSteer = source.DirectionToSteer;
|
|---|
| 109 | CrossTrackUnits = source.CrossTrackUnits;
|
|---|
| 110 |
|
|---|
| 111 | return( *this );
|
|---|
| 112 | }
|
|---|
