TTN Smart Sensor (Ks-Technologies)

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function decodeUplink(input) { /* Example Payload: 00 88 0A 05 F3 71 F0 06 17 03 72 EE 03 01 09 01 3C 00 78 02 11 46 01 10 01 06 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Decoded Payload: * Key (Data Type): 0x0088 = GPS * Length: 0x0A = 10 bytes * Latitude: 0x05F371 = 39.0001° * Longitude: 0xF00617 = -104.7016° * Altitude: 0x0372EE = 2260.30 meters * Accuracy: 0x03 = 3 meters * Key (Data Type): 0x0109 = Speed * Length: 0x01 = 1 byte * Speed: 0x3C = 60 mph * Key (Data Type): 0x0078 = Battery * Length: 0x02 = 2 bytes * Battery: 0x1146 = 4,422mV/4.422V * Key (Data Type): 0x0110 = Tx Power * Length: 0x01 = 1 byte * Tx Power: 0x06 = +18dBm * 0x05 = +20dBm * 0x06 = +18dBm * 0x07 = +16dBm * 0x08 = +14dBm * 0x09 = +12dBm * 0x0A = +10dBm * 0x0B = +8dBm * 0x0C = +6dBm * 0x0D = +4dBm * 0x0E = +2dBm */ // Get the incoming bytes var bytes = input.bytes; // GPS var lat = bytes[3] << 16 | bytes[4] << 8 | bytes[5]; if (lat > 0x80000) { lat -= 0xFFFFFF; } var latitude = lat / 10000; var lng = bytes[6] << 16 | bytes[7] << 8 | bytes[8]; if (lng > 0x80000) { lng -= 0xFFFFFF; } var longitude = lng / 10000; var alt = bytes[9] << 16 | bytes[10] << 8 | bytes[11]; var altitude = alt / 100 | 0; var accuracy = bytes[12]; // Speed var speed = bytes[16]; // Battery var batteryValue = ((bytes[20] & 0x00FF) << 8) | (bytes[21] & 0x00FF); var battery = batteryValue / 1000; // Tx Power var txPowerdBm; var txPower = bytes[25]; if (txPower == 0x05) { txPowerdBm = "+20"; } if (txPower == 0x06) { txPowerdBm = "+18"; } if (txPower == 0x07) { txPowerdBm = "+16"; } if (txPower == 0x08) { txPowerdBm = "+14"; } if (txPower == 0x09) { txPowerdBm = "+12"; } if (txPower == 0x0A) { txPowerdBm = "+10"; } if (txPower == 0x0B) { txPowerdBm = "+8"; } if (txPower == 0x0C) { txPowerdBm = "+6"; } if (txPower == 0x0D) { txPowerdBm = "+4"; } if (txPower == 0x0E) { txPowerdBm = "+2"; } return { data: { latitude: latitude, longitude: longitude, altitude: altitude, accuracy: accuracy, speed: speed, battery: battery, txPower: txPowerdBm } }; }