function Decoder(bytes, port) { // Decode an uplink message from a buffer (array) of bytes to an object of fields. 
var decoded = {}; //
decoded.port = port; 
decoded.humidity = 0; decoded.temp = 0; decoded.pressure=0;
if (port === 10) {  // Port selection
  decoded.humidity = (bytes[0] << 16 | bytes[1]<<8 | bytes[2] | (bytes[0] & 0x80 ? 0xFF<<24 : 0))/1000; 
  decoded.temp     = (bytes[3] << 16 | bytes[4]<<8 | bytes[5] | (bytes[3] & 0x80 ? 0xFF<<24 : 0))/1000; 
  decoded.pressure = (bytes[6] << 16 | bytes[7]<<8 | bytes[8] | (bytes[6] & 0x80 ? 0xFF<<24 : 0))/1000;  
  
}
return decoded;
}