source: pacpussensors/trunk/NMEA0183/src/AAM.cpp

Last change on this file was 59, checked in by DHERBOMEZ Gérald, 10 years ago

Integration of new modules:

  • GPS NMEA0183 decoder
  • Span CPT Decoder

Update of:

File size: 2.1 KB
Line 
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: aam.cpp $
13** $Revision: 5 $
14** $Modtime: 10/10/98 2:40p $
15*/
16
17
18AAM::AAM()
19{
20 Mnemonic = "AAM";
21 Empty();
22}
23
24AAM::~AAM()
25{
26 //Mnemonic.Empty();
27 Empty();
28}
29
30void AAM::Empty( void )
31{
32 IsArrivalCircleEntered = NMEA_Unknown;
33 IsPerpendicular = NMEA_Unknown;
34 CircleRadius = 0.0;
35 //WaypointID.Empty();
36}
37
38BOOL AAM::Parse( const SENTENCE& sentence )
39{
40 /*
41 ** AAM - Waypoint Arrival Alarm
42 **
43 ** 1 2 3 4 5 6
44 ** | | | | | |
45 ** $--AAM,A,A,x.x,N,c--c*hh<CR><LF>
46 **
47 ** 1) Status, A = Arrival circle entered
48 ** 2) Status, A = perpendicular passed at waypoint
49 ** 3) Arrival circle radius
50 ** 4) Units of radius, nautical miles
51 ** 5) Waypoint ID
52 ** 6) Checksum
53 */
54
55 /*
56 ** First we check the checksum...
57 */
58
59 if ( sentence.IsChecksumBad( 6 ) == True )
60 {
61 SetErrorMessage( "Invalid Checksum" );
62 return( FALSE );
63 }
64
65 /*
66 ** Line has already been checked for checksum validity
67 */
68
69 IsArrivalCircleEntered = sentence.Boolean( 1 );
70 IsPerpendicular = sentence.Boolean( 2 );
71 CircleRadius = sentence.Double( 3 );
72 WaypointID = sentence.Field( 5 );
73
74 return( TRUE );
75}
76
77BOOL AAM::Write( SENTENCE& sentence )
78{
79 /*
80 ** Let the parent do its thing
81 */
82
83 RESPONSE::Write( sentence );
84
85 sentence += IsArrivalCircleEntered;
86 sentence += IsPerpendicular;
87 sentence += CircleRadius;
88 sentence += "N";
89 sentence += WaypointID;
90
91 sentence.Finish();
92
93 return( TRUE );
94}
95
96const AAM& AAM::operator = ( const AAM& source )
97{
98 IsArrivalCircleEntered = source.IsArrivalCircleEntered;
99 IsPerpendicular = source.IsPerpendicular;
100 CircleRadius = source.CircleRadius;
101 WaypointID = source.WaypointID;
102
103 return( *this );
104}
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