#!/usr/bin/env python import time import serial import sys ser = serial.Serial( port='/dev/serial0', #Replace ttyS0 with ttyAM0 for Pi1,Pi2,Pi0 baudrate = 9600, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS, timeout=1 ) ser.flush() cw = int(sys.argv[1], 0) com = [cw] ser.write(serial.to_bytes(com)) ser.flush() while True: if ser.in_waiting > 0: line = ser.readline().decode('utf-8', errors='replace').rstrip() #time.sleep(0.1) print(line) ser.flush() break quit()