configure_cots_bandrich_ue.py 6.36 KB
Newer Older
1 2
#!/usr/bin/python 

3 4 5 6 7 8 9 10 11
import time
import serial
import os
from pyroute2 import IPRoute
import sys
import re
import threading
import signal
import traceback
12
import os
13
import commands
14 15

# configure the serial connections (the parameters differs on the device you are connecting to)
16 17
#First we find an open port to work with
serial_port=''
18
ser=serial.Serial()
Rohit Gupta's avatar
Rohit Gupta committed
19 20 21 22 23
openair_dir = os.environ.get('OPENAIR_DIR')
if openair_dir == None:
  print "Error getting OPENAIR_DIR environment variable"
  sys.exit(1)

24 25
def find_open_port():
   global serial_port, ser
26 27 28
   max_ports=100
   if os.path.exists(serial_port) == True:
     return serial_port
29
   for port in range(2,100):
30 31 32 33
      serial_port = '/dev/ttyUSB'+str(port)
      if os.path.exists(serial_port) == True:
         print 'New Serial Port : ' + serial_port
         break
34

35 36 37
   ser = serial.Serial(port=serial_port)
   return

38

39 40
    
#serial_port = '/dev/ttyUSB2'
Rohit Gupta's avatar
Rohit Gupta committed
41
bandrich_ppd_config = os.environ.get('OPENAIR_DIR') + '/cmake_targets/autotests/tools/wdial.bandrich.conf'
42 43 44 45 46 47 48 49 50 51 52 53 54

exit_flag=0

def signal_handler(signal, frame):
        print('You pressed Ctrl+C!')
        print('Resetting the UE to detached state')
        timeout=10
        exit_flag=1
        send_command('AT+CGATT=0' , 'OK' , timeout)
        sys.exit(0)

signal.signal(signal.SIGINT, signal_handler)

55

56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82

#ser.open()
#ser.isOpen()

class pppThread (threading.Thread):
    def __init__(self, threadID, name, counter):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.counter = counter
    def run(self):
        print "Starting " + self.name
        #Here we keep running pppd thread in indefinite loop as this script terminates sometimes
        #while 1:
        while 1:
           time.sleep(5) #Hard coded, do not reduce this number! 
           print "Starting wvdial now..."
           print 'exit_flag = ' + str(exit_flag)
           send_command('AT+CGATT=1','OK', 300)
           os.system('wvdial -C ' + bandrich_ppd_config + '' )
           if exit_flag == 1:
              print "Exit flag set to true. Exiting pppThread now"
           print "Terminating wvdial now..."

def send_command (cmd, response, timeout):
   count=0
   sleep_duration = 1
Rohit Gupta's avatar
Rohit Gupta committed
83
   print 'In function: send_command: cmd = <' + cmd + '> response: <' + response + '> \n'
84
   global serial_port, ser
85
   while count <= timeout:
Rohit Gupta's avatar
Rohit Gupta committed
86
      try:
87 88 89
        #Sometimes the port does not exist coz of reset in modem.
        #In that case, we need to search for this port again
        if os.path.exists(serial_port) == False:
90
            find_open_port()
Rohit Gupta's avatar
Rohit Gupta committed
91 92 93 94 95 96 97 98 99 100 101 102 103 104
        ser.write (cmd + '\r\n')
        out = ''
        time.sleep(sleep_duration)
        count = count + sleep_duration
        while ser.inWaiting() > 0:
            out += ser.read(1)
        print 'out = <' + out + '> response = <' + response + '> \n'
        if re.search(response, out):
          break
      except Exception, e:
        error = ' cmd : ' + cmd + ' response : ' + response
        error = error + ' In function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
        error = error + traceback.format_exc()
        print error
105 106 107 108 109 110
        

def start_ue () :
   #print 'Enter your commands below.\r\nInsert "exit" to leave the application.'
   timeout=60 #timeout in seconds
   send_command('AT', 'OK' , timeout)
111
   send_command('AT+CFUN=1' , 'OK' , timeout)
Rohit Gupta's avatar
Rohit Gupta committed
112
   #send_command('AT+CGATT=0' , 'OK' , timeout)
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
   send_command('AT+CGATT=1','OK', 300)
   #os.system('wvdial -C ' + bandrich_ppd_config + ' &' )
   
   thread_ppp = pppThread(1, "ppp_thread", 1)
   thread_ppp.start()

   iface='ppp0'
   
   while 1:
     time.sleep ( 2)
     #Now we check if ppp0 interface is up and running
     try:
        if exit_flag == 1:
          break
        ip = IPRoute()
        idx = ip.link_lookup(ifname=iface)[0]
        os.system ('route add 192.172.0.1 ppp0')
Rohit Gupta's avatar
Rohit Gupta committed
130
        os.system ('ping 192.172.0.1')
131 132 133 134 135 136 137 138 139 140 141 142 143
        break
     except Exception, e:
        error = ' Interface ' + iface + 'does not exist...'
        error = error + ' In function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
        error = error + traceback.format_exc()
        print error
    
   thread_ppp.join()

def stop_ue():
   timeout=60
   os.system('killall wvdial')
   send_command('AT', 'OK' , timeout)
Rohit Gupta's avatar
Rohit Gupta committed
144
   send_command('AT+CGATT=0' , 'OK|ERROR' , timeout)
145
   send_command('AT+CFUN=4' , 'OK' , timeout)
146

147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190

#reset the USB BUS of Bandrich UE
def reset_ue():
  stringIdBandrich='BandRich, Inc. 4G LTE adapter'
  status, out = commands.getstatusoutput('lsusb | grep -i \'' + stringIdBandrich + '\'')
  if (out == '') :
     print "Bandrich 4G LTE Adapter not found. Exiting now..."
     sys.exit()
  p=re.compile('Bus\s*(\w+)\s*Device\s*(\w+):\s*ID\s*(\w+):(\w+)')
  res=p.findall(out)
  BusId=res[0][0]
  DeviceId=res[0][1]
  VendorId=res[0][2]
  ProductId=res[0][3]
  usb_dir= find_usb_path(VendorId, ProductId)
  print usb_dir
  cmd = "sudo sh -c \"echo 0 > " + usb_dir + "/authorized\""
  os.system(cmd + " ; sleep 5" )
  cmd = "sudo sh -c \"echo 1 > " + usb_dir + "/authorized\""
  os.system(cmd + " ; sleep 5" )

def read_file(filename):
  try:
    file = open(filename, 'r')
    return file.read()
  except Exception, e:
    #error = ' Filename ' + filename 
    #error = error + ' In function: ' + sys._getframe().f_code.co_name + ': *** Caught exception: '  + str(e.__class__) + " : " + str( e)
    #error = error + traceback.format_exc()
    #print error
    return ''


def find_usb_path(idVendor, idProduct):
  for root, dirs, files in os.walk("/sys/bus/usb/devices", topdown=False):
    for name in dirs:
        tmpdir= os.path.join(root, name)
        tmpidVendor = read_file(tmpdir+'/idVendor').replace("\n","")
        tmpidProduct = read_file(tmpdir+'/idProduct').replace("\n","")
        #print "tmpdir = " + tmpdir + " tmpidVendor = " + tmpidVendor + " tmpidProduct = " + tmpidProduct
        if tmpidVendor == idVendor and tmpidProduct == idProduct:
            return tmpdir
  return ''

191 192
for arg in sys.argv[1:]:
    if arg == '--start-ue' :
193 194
        find_open_port()
        print 'Using Serial port : ' + serial_port  
195 196
        start_ue()
    elif arg == '--stop-ue' :
197 198
        find_open_port()
        print 'Using Serial port : ' + serial_port  
199
        stop_ue()
200 201
    elif arg == '--reset-ue' :
        reset_ue()
202 203 204
    else :
        print " Script called with wrong arguments, arg = " + arg
        sys.exit()
205 206