popufare/busunit/scripts/setup-serial-dmesg.py

#!/usr/bin/python
#
# Copyright (c) 2019 Clementine Computing LLC.
#
# This file is part of PopuFare.
#
# PopuFare is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# PopuFare is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with PopuFare.  If not, see <https://www.gnu.org/licenses/>.
#

import serial
import sys
import re
import time
import subprocess as sp
from os import listdir
from os.path import isfile, join
from os import system

DEBUG = True
VERBOSE = True

ret = system("rm -f /dev/ttyPIU /dev/ttyGPRS /dev/ttyDIU /dev/ttyGPS")

DEVDIR = "/dev"

for devfn in ["ttyUSB0", "ttyUSB1"]:
  s = sp.check_output("dmesg | grep " + devfn + " | tail -n1", shell=True)
  s = s.strip()

  print s

  if re.search(r'FTDI', s):
    print devfn, "-> /dev/ttyPIU (ftdi)"
    system("ln -s " + devfn + " /dev/ttyPIU")
  elif re.search(r'pl2303', s):
    print devfn, "-> /dev/ttyGPRS (pl2303)"
    system("ln -s " + devfn + " /dev/ttyGPRS")

system("ln -s /dev/ttyACM0 /dev/ttyGPS")