@signalk/nmea0183-signalk
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A node.js/javascript parser for NMEA0183 sentences. Sentences are parsed to Signal K format.
129 lines • 4.8 kB
JavaScript
;
/**
* Copyright 2019 Signal K and Fabian Tollenaar <fabian@decipher.industries>.
*
* 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;
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const utils = __importStar(require("@signalk/nmea0183-utilities"));
const nmea_casts_1 = require("../lib/nmea-casts");
const debug_1 = __importDefault(require("debug"));
const debug = (0, debug_1.default)('signalk-parser-nmea0183/BWC');
/**
* $GPBWC,225444,4917.24,N,12309.57,W,051.9,T,031.6,M,001.3,N,004*29
*
* Bearing and distance to waypoint - great circle
*
* 0) 225444 UTC time of fix 22:54:44
* 1,2) 4917.24,N Latitude of waypoint
* 3,4) 12309.57,W Longitude of waypoint
* 5,6) 051.9,T Bearing to waypoint, degrees true
* 7,8) 031.6,M Bearing to waypoint, degrees magnetic
* 9,10) 001.3,N Distance to waypoint, Nautical miles
* 11) 004 Waypoint ID
**/
const BWC = function (input, _session) {
const { id, sentence, parts, tags } = input;
const upper = (str) => str.trim().toUpperCase();
debug(`[BWCHook] decoding sentence ${id} => ${sentence}`);
const values = [];
const result = {
updates: [
{
source: tags.source,
values
}
]
};
if (parts[0] !== '') {
result.updates[0].timestamp = utils.timestamp(parts[0]);
}
if (parts[1] !== '' &&
parts[2] !== '' &&
parts[3] !== '' &&
parts[4] !== '') {
const latitude = (0, nmea_casts_1.coord)(parts[1], parts[2]);
const longitude = (0, nmea_casts_1.coord)(parts[3], parts[4]);
values.push({
path: 'navigation.courseGreatCircle.nextPoint.position',
value: {
longitude,
latitude
}
});
}
else {
values.push({
path: 'navigation.courseGreatCircle.nextPoint.position',
value: null
});
}
if (parts[9] !== '' && parts[10] !== '') {
const distance = utils.transform(parts[9], upper(parts[10]) === 'N' ? 'nm' : 'km', 'm');
values.push({
path: 'navigation.courseGreatCircle.nextPoint.distance',
value: distance
});
}
if (parts[6] === 'T' && parts[5] !== '') {
values.push({
path: 'navigation.courseGreatCircle.bearingTrackTrue',
value: utils.transform(parts[5], 'deg', 'rad')
});
}
if (parts[8] === 'M' && parts[7] !== '') {
values.push({
path: 'navigation.courseGreatCircle.bearingTrackMagnetic',
value: utils.transform(parts[7], 'deg', 'rad')
});
}
return result;
};
exports.default = BWC;
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