| [59] | 1 | #include "nmea0183.h"
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| 2 | #pragma hdrstop
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| 3 |
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| 4 | /*
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| 5 | ** Author: Samuel R. Blackburn
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| 6 | ** Internet: sam_blackburn@pobox.com
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| 7 | **
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| 8 | ** You can use it any way you like as long as you don't try to sell it.
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| 9 | **
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| 10 | ** Copyright, 1996, Samuel R. Blackburn
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| 11 | **
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| 12 | ** $Workfile: mwv.cpp $
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| 13 | ** $Revision: 4 $
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| 14 | ** $Modtime: 10/10/98 2:42p $
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| 15 | */
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| 16 |
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| 17 |
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| 18 |
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| 19 | MWV::MWV()
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| 20 | {
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| 21 | Mnemonic = "MWV";
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| 22 | Empty();
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| 23 | }
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| 24 |
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| 25 | MWV::~MWV()
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| 26 | {
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| 27 | //Mnemonic.Empty();
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| 28 | Empty();
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| 29 | }
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| 30 |
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| 31 | void MWV::Empty( void )
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| 32 | {
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| 33 | WindAngle = 0.0;
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| 34 | //Reference.Empty();
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| 35 | WindSpeed = 0.0;
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| 36 | //WindSpeedUnits.Empty();
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| 37 | IsDataValid = NMEA_Unknown;
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| 38 | }
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| 39 |
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| 40 | BOOL MWV::Parse( const SENTENCE& sentence )
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| 41 | {
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| 42 | /*
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| 43 | ** MWV - Wind Speed and Angle
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| 44 | **
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| 45 | ** 1 2 3 4 5
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| 46 | ** | | | | |
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| 47 | ** $--MWV,x.x,a,x.x,a*hh<CR><LF>
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| 48 | **
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| 49 | ** Field Number:
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| 50 | ** 1) Wind Angle, 0 to 360 degrees
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| 51 | ** 2) Reference, R = Relative, T = True
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| 52 | ** 3) Wind Speed
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| 53 | ** 4) Wind Speed Units, K/M/N
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| 54 | ** 5) Status, A = Data Valid
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| 55 | ** 6) Checksum
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| 56 | */
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| 57 |
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| 58 | /*
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| 59 | ** First we check the checksum...
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| 60 | */
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| 61 |
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| 62 | if ( sentence.IsChecksumBad( 6 ) == True )
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| 63 | {
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| 64 | SetErrorMessage( "Invalid Checksum" );
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| 65 | return( FALSE );
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| 66 | }
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| 67 |
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| 68 | WindAngle = sentence.Double( 1 );
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| 69 | Reference = sentence.Field( 2 );
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| 70 | WindSpeed = sentence.Double( 3 );
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| 71 | WindSpeedUnits = sentence.Field( 4 );
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| 72 | IsDataValid = sentence.Boolean( 5 );
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| 73 |
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| 74 | return( TRUE );
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| 75 | }
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| 76 |
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| 77 | BOOL MWV::Write( SENTENCE& sentence )
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| 78 | {
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| 79 | /*
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| 80 | ** Let the parent do its thing
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| 81 | */
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| 82 |
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| 83 | RESPONSE::Write( sentence );
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| 84 |
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| 85 | sentence += WindAngle;
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| 86 | sentence += Reference;
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| 87 | sentence += WindSpeed;
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| 88 | sentence += WindSpeedUnits;
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| 89 | sentence += IsDataValid;
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| 90 |
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| 91 | sentence.Finish();
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| 92 |
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| 93 | return( TRUE );
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| 94 | }
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| 95 |
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| 96 | const MWV& MWV::operator = ( const MWV& source )
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| 97 | {
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| 98 | WindAngle = source.WindAngle;
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| 99 | Reference = source.Reference;
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| 100 | WindSpeed = source.WindSpeed;
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| 101 | WindSpeedUnits = source.WindSpeedUnits;
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| 102 | IsDataValid = source.IsDataValid;
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| 103 |
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| 104 | return( *this );
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| 105 | }
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