function Decode(fPort, bytes, variables)  {
  // Decode an uplink message from a buffer
  // (array) of bytes to an object of fields.
	var value=(bytes[0]<<8 | bytes[1]) & 0x3FFF;
	var batV=value/1000;//Battery,units:V

	value=bytes[2]<<8 | bytes[3];
	if(bytes[2] & 0x80)
	{value |= 0xFFFF0000;}
	var temp_DS18B20=(value/10).toFixed(2);//DS18B20,temperature
   
	value=bytes[4]<<8 | bytes[5];
	var N=value;	//Unit:mg/kg
   
	value=bytes[6]<<8 | bytes[7];
	var P=value;	//Unit:mg/kg
  
	value=bytes[8]<<8 | bytes[9];
	var K=value;	//Unit:mg/kg
   
	var mes_type = bytes[10]>>4;
	var i_flag = bytes[10]&0x0F;
  return {
       Bat:batV +" V",
       TempC_DS18B20:temp_DS18B20+" °C",
       N_SOIL:N,
       P_SOIL:P,
       K_SOIL:K,
	   Interrupt_flag:i_flag,
	   Message_type:mes_type
  };
}