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）
34 lines
822 B
JavaScript
34 lines
822 B
JavaScript
var helpers = require("../helpers.js")
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/*
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=== HDM - Heading - Magnetic ===
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------------------------------------------------------------------------------
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1 2 3
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$--HDM,x.x,M*hh
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------------------------------------------------------------------------------
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Field Number:
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1) Heading Degrees, magnetic
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2) M = Magnetic
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3) Checksum
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*/
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exports.TYPE = 'heading-info-magnetic';
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exports.ID = 'HDM';
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exports.decode = function (fields) {
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return {
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sentence: exports.ID,
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type: 'heading-info-magnetic',
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heading: +fields[1]
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}
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};
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exports.encode = function (talker, msg) {
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var result = ['$' + talker + exports.ID];
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result.push(helpers.encodeFixed(msg.heading, 1));
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result.push('M');
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var resultMsg = result.join(',');
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return resultMsg + helpers.computeChecksum(resultMsg);
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}; |