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）
36 lines
896 B
JavaScript
36 lines
896 B
JavaScript
var helpers = require("../helpers.js")
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/*
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=== ROT - Rate Of Turn ===
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------------------------------------------------------------------------------
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1 2 3
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$--ROT,x.x,A*hh<CR><LF>
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------------------------------------------------------------------------------
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Field Number:
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1. Rate Of Turn, degrees per minute, "-" means bow turns to port
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2. Status, "A" means data is valid
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3. Checksum
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*/
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exports.TYPE = 'rate-of-turn';
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exports.ID = 'ROT';
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exports.decode = function (fields) {
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return {
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sentence: exports.ID,
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type: exports.TYPE,
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rateOfTurn: +fields[1],
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valid: fields[2] === "A",
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}
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};
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exports.encode = function (talker, msg) {
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var result = ['$' + talker + exports.ID];
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result.push(helpers.encodeFixed(msg.rateOfTurn, 2));
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result.push('A');
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var resultMsg = result.join(',');
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return resultMsg + helpers.computeChecksum(resultMsg);
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}
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