Digital Matter Oyster LoRaWANGPS device
Toni Juola
function Decoder(bytes, port)
{
var decoded = {};
if (port === 1)
{
decoded.type = "position";
decoded.latitudeDeg = bytes[0] + bytes[1] * 256 +
bytes[2] * 65536 + bytes[3] * 16777216;
if (decoded.latitudeDeg >= 0x80000000) // 2^31
decoded.latitudeDeg -= 0x100000000; // 2^32
decoded.latitudeDeg /= 1e7;
decoded.longitudeDeg = bytes[4] + bytes[5] * 256 +
bytes[6] * 65536 + bytes[7] * 16777216;
if (decoded.longitudeDeg >= 0x80000000) // 2^31
decoded.longitudeDeg -= 0x100000000; // 2^32
decoded.longitudeDeg /= 1e7;
decoded.inTrip = ((bytes[8] & 0x1) !== 0) ? true : false;
decoded.fixFailed = ((bytes[8] & 0x2) !== 0) ? true : false;
decoded.headingDeg = (bytes[8] >> 2) * 5.625;
decoded.speedKmph = bytes[9];
decoded.batV = bytes[10] * 0.025;
decoded.manDown = null;
}
else if (port === 4)
{
decoded.type = "position";
decoded.latitudeDeg = bytes[0] + bytes[1] * 256 + bytes[2] * 65536;
if (decoded.latitudeDeg >= 0x800000) // 2^23
decoded.latitudeDeg -= 0x1000000; // 2^24
decoded.latitudeDeg *= 256e-7;
decoded.longitudeDeg = bytes[3] + bytes[4] * 256 + bytes[5] * 65536;
if (decoded.longitudeDeg >= 0x800000) // 2^23
decoded.longitudeDeg -= 0x1000000; // 2^24
decoded.longitudeDeg *= 256e-7;
decoded.headingDeg = (bytes[6] & 0x7) * 45;
decoded.speedKmph = (bytes[6] >> 3) * 5;
decoded.batV = bytes[7] * 0.025;
decoded.inTrip = ((bytes[8] & 0x1) !== 0) ? true : false;
decoded.fixFailed = ((bytes[8] & 0x2) !== 0) ? true : false;
decoded.manDown = ((bytes[8] & 0x4) !== 0) ? true : false;
}
else if (port === 2)
{
decoded.type = "downlink ack";
decoded.sequence = (bytes[0] & 0x7F);
decoded.accepted = ((bytes[0] & 0x80) !== 0) ? true : false;
decoded.fwMaj = bytes[1];
decoded.fwMin = bytes[2];
}
else if (port === 3)
{decoded.type = "stats";
decoded.initialBatV = 4.0 + 0.100 * (bytes[0] & 0xF);
decoded.txCount = 32 * ((bytes[0] >> 4) + (bytes[1] & 0x7F) * 16);
decoded.tripCount = 32 * ((bytes[1] >> 7) + (bytes[2] & 0xFF) * 2
+ (bytes[3] & 0x0F) * 512);
decoded.gpsSuccesses = 32 * ((bytes[3] >> 4) + (bytes[4] & 0x3F) * 16);
decoded.gpsFails = 32 * ((bytes[4] >> 6) + (bytes[5] & 0x3F) * 4);
decoded.aveGpsFixS = 1 * ((bytes[5] >> 6) + (bytes[6] & 0x7F) * 4);
decoded.aveGpsFailS = 1 * ((bytes[6] >> 7) + (bytes[7] & 0xFF) * 2);
decoded.aveGpsFreshenS = 1 * ((bytes[7] >> 8) + (bytes[8] & 0xFF) * 1);
decoded.wakeupsPerTrip = 1 * ((bytes[8] >> 8) + (bytes[9] & 0x7F) * 1);
decoded.uptimeWeeks = 1 * ((bytes[9] >> 7) + (bytes[10] & 0xFF) * 2);
}
return decoded;
}
BR,
Stonde
Александр Тищенко
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Toni Juola
Toni Juola
tiistai 19. maaliskuuta 2019 8.21.37 UTC+2 Alexander Tishchenko kirjoitti:
Alexander Tishchenko
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Alexander Tishchenko
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Toni Juola
Александр Тищенко
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