?? rma.cpp
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#include "nmea0183.h"
#pragma hdrstop
/*
** Author: Samuel R. Blackburn
** CI$: 76300,326
** Internet: sammy@sed.csc.com
**
** You can use it any way you like.
*/
IMPLEMENT_DYNAMIC( RMA, RESPONSE )
RMA::RMA()
{
Mnemonic = "RMA";
Empty();
}
RMA::~RMA()
{
Mnemonic.Empty();
Empty();
}
void RMA::Empty( void )
{
ASSERT_VALID( this );
IsDataValid = Unknown;
TimeDifferenceA = 0.0;
TimeDifferenceB = 0.0;
SpeedOverGroundKnots = 0.0;
TrackMadeGoodDegreesTrue = 0.0;
MagneticVariation = 0.0;
MagneticVariationDirection = EW_Unknown;
}
BOOL RMA::Parse( const SENTENCE& sentence )
{
ASSERT_VALID( this );
/*
** RMA - Recommended Minimum Navigation Information
** 12
** 1 2 3 4 5 6 7 8 9 10 11|
** | | | | | | | | | | | |
** $--RMA,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,x.x,x.x,x.x,a*hh<CR><LF>
**
** Field Number:
** 1) Blink Warning
** 2) Latitude
** 3) N or S
** 4) Longitude
** 5) E or W
** 6) Time Difference A, uS
** 7) Time Difference B, uS
** 8) Speed Over Ground, Knots
** 9) Track Made Good, degrees true
** 10) Magnetic Variation, degrees
** 11) E or W
** 12) Checksum
*/
/*
** First we check the checksum...
*/
NMEA0183_BOOLEAN check = sentence.IsChecksumBad( 12 );
if ( check == True )
{
SetErrorMessage( "Invalid Checksum" );
return( FALSE );
}
if ( check == Unknown )
{
SetErrorMessage( "Missing Checksum" );
return( FALSE );
}
IsDataValid = sentence.Boolean( 1 );
Position.Parse( 2, 3, 4, 5, sentence );
TimeDifferenceA = sentence.Double( 6 );
TimeDifferenceB = sentence.Double( 7 );
SpeedOverGroundKnots = sentence.Double( 8 );
TrackMadeGoodDegreesTrue = sentence.Double( 9 );
MagneticVariation = sentence.Double( 10 );
MagneticVariationDirection = sentence.EastOrWest( 11 );
return( TRUE );
}
BOOL RMA::Write( SENTENCE& sentence )
{
ASSERT_VALID( this );
/*
** Let the parent do its thing
*/
RESPONSE::Write( sentence );
sentence += IsDataValid;
sentence += Position;
sentence += TimeDifferenceA;
sentence += TimeDifferenceB;
sentence += SpeedOverGroundKnots;
sentence += TrackMadeGoodDegreesTrue;
sentence += MagneticVariation;
sentence += MagneticVariationDirection;
sentence.Finish();
return( TRUE );
}
const RMA& RMA::operator = ( const RMA& source )
{
ASSERT_VALID( this );
IsDataValid = source.IsDataValid;
Position = source.Position;
TimeDifferenceA = source.TimeDifferenceA;
TimeDifferenceB = source.TimeDifferenceB;
SpeedOverGroundKnots = source.SpeedOverGroundKnots;
TrackMadeGoodDegreesTrue = source.TrackMadeGoodDegreesTrue;
MagneticVariation = source.MagneticVariation;
MagneticVariationDirection = source.MagneticVariationDirection;
return( *this );
}
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