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 HDG::Parse( const SENTENCE& sentence )
{
/*
** HDG - Heading - Deviation & Variation
**
** 1 2 3 4 5 6
** | | | | | |
** $--HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
**
** Field Number:
** 1) Magnetic Sensor heading in degrees
** 2) Magnetic Deviation, degrees
** 3) Magnetic Deviation direction, E = Easterly, W = Westerly
** 4) Magnetic Variation degrees
** 5) Magnetic Variation direction, E = Easterly, W = Westerly
** 6) Checksum
*/
/*
** First we check the checksum...
*/
if ( sentence.IsChecksumBad( 6 ) == TRUE )
{
SetErrorMessage( _T("Invalid Checksum") );
return( FALSE );
}
MagneticSensorHeadingDegrees = sentence.Double( 1 );
MagneticDeviationDegrees = sentence.Double( 2 );
MagneticDeviationDirection = sentence.EastOrWest( 3 );
MagneticVariationDegrees = sentence.Double( 4 );
MagneticVariationDirection = sentence.EastOrWest( 5 );
return( TRUE );
}
bool RMC::Parse( const SENTENCE& sentence )
{
// ASSERT_VALID( this );
/*
** RMC - Recommended Minimum Navigation Information
**
** Version 2.0 Format
** 12
** 1 2 3 4 5 6 7 8 9 10 11|
** | | | | | | | | | | | |
** $--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,xxxx,x.x,a*hh<CR><LF>
**
** Field Number:
** 1) UTC Time
** 2) Status, V = Navigation receiver warning
** 3) Latitude
** 4) N or S
** 5) Longitude
** 6) E or W
** 7) Speed over ground, knots
** 8) Track made good, degrees true
** 9) Date, ddmmyy
** 10) Magnetic Variation, degrees
** 11) E or W
** Version 2.0
** 12) Checksum
** Version 2.3
** 12) Mode (D or A), optional, may be NULL
** 13) Checksum
*/
/*
** First we check the checksum...
*/
NMEA0183_BOOLEAN check = sentence.IsChecksumBad( 12 );
if ( check == NTrue )
{
/*
** This may be an NMEA Version 2.3 sentence, with "Mode" field
*/
wxString checksum_in_sentence = sentence.Field( 12 );
if(checksum_in_sentence.StartsWith(_T("*"))) // Field is a valid erroneous checksum
{
SetErrorMessage( _T("Invalid Checksum") );
return( FALSE );
}
else
{
check = sentence.IsChecksumBad( 13 );
if( check == NTrue)
{
SetErrorMessage( _T("Invalid Checksum") );
return( FALSE );
}
}
}
/*
if ( check == Unknown0183 )
{
SetErrorMessage( _T("Missing Checksum") );
return( FALSE );
}
*/
UTCTime = sentence.Field( 1 );
IsDataValid = sentence.Boolean( 2 );
Position.Parse( 3, 4, 5, 6, sentence );
SpeedOverGroundKnots = sentence.Double( 7 );
TrackMadeGoodDegreesTrue = sentence.Double( 8 );
Date = sentence.Field( 9 );
MagneticVariation = sentence.Double( 10 );
MagneticVariationDirection = sentence.EastOrWest( 11 );
return( TRUE );
}