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）
46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
/*
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=== RMC - Recommended Minimum Navigation Information ===
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This is one of the sentences commonly emitted by GPS units.
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------------------------------------------------------------------------------
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1 2 3 4 5 6 7 8 9 10 11 12
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$--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,xxxx,x.x,a*hh
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------------------------------------------------------------------------------
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Field Number:
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1) Time (UTC)
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2) Status, V = Navigation receiver warning
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3) Latitude
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4) N or S
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5) Longitude
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6) E or W
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7) Speed over ground, knots
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8) Track made good, degrees true
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9) Date, ddmmyy
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10) Magnetic Variation, degrees
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11) E or W
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12) Checksum
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*/
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exports.TYPE = 'nav-info';
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exports.ID = 'RMC';
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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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timestamp: fields[1],
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status: fields[2] == 'V' ? 'warning' : 'valid',
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lat: fields[3],
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latPole: fields[4],
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lon: fields[5],
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lonPole: fields[6],
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speedKnots: +fields[7],
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trackTrue: +fields[8],
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date: fields[9],
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variation: +fields[10],
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variationPole: fields[11]
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};
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} |