b0a1993169
NMEA-0183 语句解析器，含 21 个语句类型 codec 与配套单元测试。 - codecs/：APB/BWC/DBT/GGA/GLL/GRMT/GSA/GSV/HDG/HDM/HDT/MWV/RDID/ RMB/RMC/ROT/RSA/TXT/VTG/VWR/ZDA - test/：各 codec 对应的 mocha 用例 - .github/workflows/：node与 npm-publish 流水线 许可证：MIT（原作者 James Penn）
44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
var helpers = require("../helpers.js")
|
|
/*
|
|
=== MWV - Wind Speed and Angle ===
|
|
|
|
------------------------------------------------------------------------------
|
|
*******1 2 3 4 5
|
|
*******| | | | |
|
|
$--MWV,x.x,a,x.x,a*hh<CR><LF>
|
|
------------------------------------------------------------------------------
|
|
|
|
Field Number:
|
|
|
|
1. Wind Angle, 0 to 360 degrees
|
|
2. Reference, R = Relative, T = True
|
|
3. Wind Speed
|
|
4. Wind Speed Units, K/M/N
|
|
5. Status, A = Data Valid
|
|
6. Checksum
|
|
*/
|
|
exports.TYPE = 'wind';
|
|
exports.ID = 'MWV';
|
|
|
|
exports.decode = function(fields) {
|
|
return {
|
|
sentence: exports.ID,
|
|
type: exports.TYPE,
|
|
angle: +fields[1],
|
|
reference: fields[2],
|
|
speed: +fields[3],
|
|
units: fields[4],
|
|
status: fields[5]
|
|
}
|
|
}
|
|
|
|
exports.encode = function(talker, msg) {
|
|
var result = ['$' + talker + exports.ID];
|
|
result.push(helpers.encodeDegrees(msg.angle));
|
|
result.push(msg.reference);
|
|
result.push(helpers.encodeFixed(msg.speed, 2));
|
|
result.push(msg.units);
|
|
result.push(typeof msg.status === undefined ? 'A' : msg.status);
|
|
var resultMsg = result.join(',');
|
|
return resultMsg + helpers.computeChecksum(resultMsg);
|
|
} |