87 lines
2.5 KiB
JavaScript
87 lines
2.5 KiB
JavaScript
// Decoder for device payload encoder "PLAIN"
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// copy&paste to TTN Console -> Applications -> PayloadFormat -> Decoder
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function Decoder(bytes, port) {
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var decoded = {};
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if (port === 1) {
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var i = 0;
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if (bytes.length >= 2) {
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decoded.wifi = (bytes[i++] << 8) | bytes[i++];
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}
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if (bytes.length === 4 || bytes.length > 15) {
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decoded.ble = (bytes[i++] << 8) | bytes[i++];
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}
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if (bytes.length > 4) {
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decoded.latitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.longitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.sats = bytes[i++];
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decoded.hdop = (bytes[i++] << 8) | (bytes[i++]);
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decoded.altitude = ((bytes[i++] << 8) | (bytes[i++]));
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}
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}
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if (port === 2) {
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var i = 0;
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decoded.battery = ((bytes[i++] << 8) | bytes[i++]);
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decoded.uptime = ((bytes[i++] << 56) | (bytes[i++] << 48) | (bytes[i++] << 40) | (bytes[i++] << 32) |
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(bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.temp = bytes[i++];
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decoded.memory = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.reset0 = bytes[i++];
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decoded.reset1 = bytes[i++];
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}
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if (port === 4) {
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var i = 0;
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decoded.latitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.longitude = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.sats = bytes[i++];
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decoded.hdop = (bytes[i++] << 8) | (bytes[i++]);
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decoded.altitude = ((bytes[i++] << 8) | (bytes[i++]));
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}
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if (port === 5) {
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var i = 0;
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decoded.button = bytes[i++];
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}
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if (port === 6) {
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var i = 0;
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decoded.rssi = bytes[i++];
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decoded.beacon = bytes[i++];
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}
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if (port === 7) {
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var i = 0;
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decoded.temperature = ((bytes[i++] << 8) | bytes[i++]);
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decoded.pressure = ((bytes[i++] << 8) | bytes[i++]);
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decoded.humidity = ((bytes[i++] << 8) | bytes[i++]);
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decoded.air = ((bytes[i++] << 8) | bytes[i++]);
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}
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if (port === 8) {
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var i = 0;
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if (bytes.length >= 2) {
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decoded.battery = (bytes[i++] << 8) | bytes[i++];
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}
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}
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if (port === 9) {
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// timesync request
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if (bytes.length === 1) {
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decoded.timesync_seqno = bytes[0];
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}
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// epoch time answer
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if (bytes.length === 5) {
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var i = 0;
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decoded.time = ((bytes[i++] << 24) | (bytes[i++] << 16) | (bytes[i++] << 8) | bytes[i++]);
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decoded.timestatus = bytes[i++];
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}
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}
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return decoded;
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}
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