ESP32-PaxCounter/src/TTN/plain_decoder.js

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2018-06-17 13:24:20 +02:00
// Decoder for device payload encoder "PLAIN"
// copy&paste to TTN Console -> Applications -> PayloadFormat -> Decoder
function Decoder(bytes, port) {
var decoded = {};
if (port === 1) {
var i = 0;
decoded.wifi = (bytes[i++] << 8) | bytes[i++];
decoded.ble = (bytes[i++] << 8) | bytes[i++];
if (bytes.length > 4) {
decoded.latitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
decoded.longitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
decoded.sats = (bytes[i++]);
decoded.hdop = (bytes[i++] << 8) | (bytes[i++]);
decoded.altitude = (bytes[i++] << 8) | (bytes[i++]);
}
}
return decoded;
}