LoraWAN - xDot Box - NodeJS Function Node

gistfile1.txt

var decoded_data = new Buffer(msg.payload.payload,’base64′);

var lat_val = decoded_data[3] << 16 | decoded_data[4] << 8 | decoded_data[5];
var lat = !(lat_val&0×800000) ? lat_val : ((0xffffff-lat_val+1)*-1)
var latitude = lat/Math.pow(2,23)*90;

var lon_val = decoded_data[7] << 16 | decoded_data[8] << 8 | decoded_data[9];
var lon = !(lon_val&0×800000) ? lon_val : ((0xffffff-lon_val+1)*-1);
var longitude = lon/Math.pow(2,23)*180;

var temperature = decoded_data[1];

return “lat: ” + latitude + ” lon: ” + longitude + ” temp: ” + temperature;�

Source1: https://www.thethingsnetwork.org/forum/t/parsing-semtech-loramote-data/938/4
Source2: https://www.multitech.net/developer/forums/topic/mtdot-box/