import time
import serial
import json
ser = serial.Serial( 
               port='/dev/rfcomm1',
               baudrate = 115200,
               parity=serial.PARITY_NONE,
               stopbits=serial.STOPBITS_ONE,
               bytesize=serial.EIGHTBITS,
               timeout=1
           )
while 1: 
    if(ser.isOpen):
        line = ser.readline()
        print(line)
        b = open("/home/pi/Desktop/test.txt", "a")
        b.write(str(line, 'utf-8'))
        b.close()