@signalk/nmea0183-signalk
Version:
A node.js/javascript parser for NMEA0183 sentences. Sentences are parsed to Signal K format.
136 lines (134 loc) • 5.14 kB
JavaScript
;
/**
* Copyright 2016 Signal K <info@signalk.org> and contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an 'AS IS' BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
const utils = __importStar(require("@signalk/nmea0183-utilities"));
const nmea_casts_1 = require("../lib/nmea-casts");
/*
RMB Sentence
$GPRMB,A,0.66,L,003,004,4917.24,N,12309.57,W,001.3,052.5,000.5,V*20
values:
- RMB Recommended minimum navigation information
[0] A Data status A = OK, V = Void (warning)
[1][2] 0.66,L Cross-track error (nautical miles, 9.99 max),
steer Left to correct (or R = right)
[3] 003 Origin waypoint ID
[4] 004 Destination waypoint ID
[5][6] 4917.24,N Destination waypoint latitude 49 deg. 17.24 min. N
[7][8] 12309.57,W Destination waypoint longitude 123 deg. 09.57 min. W
[9] 001.3 Range to destination, nautical miles (999.9 max)
[10] 052.5 True bearing to destination
[11] 000.5 Velocity towards destination, knots
[12] V Arrival alarm A = arrived, V = not arrived
- *20 checksum
*/
const RMB = function (input, _session) {
const { parts, tags } = input;
let position = null;
if (parts[5].trim() !== '' && parts[7].trim() !== '') {
position = {
longitude: (0, nmea_casts_1.coord)(parts[7], parts[8]),
latitude: (0, nmea_casts_1.coord)(parts[5], parts[6])
};
}
const bearing = utils.float(parts[10]);
const rawVmg = utils.float(parts[11]);
const vmg = rawVmg > 0 ? rawVmg : 0.0;
const distance = utils.float(parts[9]);
const rawCrossTrackError = utils.float(parts[1]);
const crossTrackError = parts[2] == 'L' ? rawCrossTrackError : -rawCrossTrackError;
const originWaypointID = (parts[3] || '').trim();
const destinationWaypointID = (parts[4] || '').trim();
const values = [
{
path: 'navigation.courseRhumbline.nextPoint.position',
value: position
},
{
path: 'navigation.courseRhumbline.nextPoint.bearingTrue',
value: utils.transform(bearing, 'deg', 'rad')
},
{
path: 'navigation.courseRhumbline.nextPoint.velocityMadeGood',
value: utils.transform(vmg, 'knots', 'ms')
},
{
path: 'navigation.courseRhumbline.nextPoint.distance',
value: utils.transform(distance, 'nm', 'km') * 1000
},
{
path: 'navigation.courseRhumbline.crossTrackError',
value: utils.transform(crossTrackError, 'nm', 'km') * 1000
}
];
if (destinationWaypointID) {
values.push({
path: 'navigation.courseRhumbline.nextPoint.ID',
value: destinationWaypointID
});
}
if (originWaypointID) {
values.push({
path: 'navigation.courseRhumbline.previousPoint.ID',
value: originWaypointID
});
}
const delta = {
updates: [
{
source: tags.source,
timestamp: tags.timestamp,
values
}
]
};
return delta;
};
exports.default = RMB;
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