lora-server.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2019 by Satoshi Takahashi, all right reserved.
# https://s-taka.org/
# BSD 2-clause license

import re
import serial
import time

device='/dev/ttyAMA0'                # Raspberry Pi

while True:
    try:
        ser = serial.Serial(device,115200,timeout=1)
    except:
        print ("Serial port error. Waiting.")
        time.sleep(5)
    else:
        break
print ("Serial port OK. Waiting for reset.")

while True:
    buf = ser.readline()
    if buf == b'': continue
    print (buf.decode('utf-8','replace').strip())
    if buf == b"Select Mode [1.terminal or 2.processor]\r\n": break
ser.write(b'1\r\n')

while True:
    buf = ser.readline()
    if buf == b'': continue
    print (buf.decode().strip())
    if buf.decode().find('LORA')!=-1: break
ser.write(b'z\r\n')

while True:
    buf = ser.readline()
    if buf == b'': break
    print (buf.decode().strip())

print("Ready.")

while True:
    buf = ser.readline()
    if buf == b'': continue
    m=re.search(r"(-[0-9.]+).*Data\((.*)\)", buf.decode());
    if m:
        time.sleep(0.1)
        buf=m.group(2) + " (" + m.group(1) + " dBm)"
        print("send: " + buf)
        ser.write((buf+"\r\n").encode())
        if m.group(2) == 'quit':
            print("Bye.")
            break

ser.close()

# EOF