configure_cots_bandrich_ue.py 4.64 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
14

# configure the serial connections (the parameters differs on the device you are connecting to)
15
16
#First we find an open port to work with
serial_port=''
17
ser=serial.Serial()
Rohit Gupta's avatar
Rohit Gupta committed
18
19
20
21
22
openair_dir = os.environ.get('OPENAIR_DIR')
if openair_dir == None:
  print "Error getting OPENAIR_DIR environment variable"
  sys.exit(1)

23
24
def find_open_port():
   global serial_port, ser
25
26
27
   max_ports=100
   if os.path.exists(serial_port) == True:
     return serial_port
28
   for port in range(2,100):
29
30
31
32
      serial_port = '/dev/ttyUSB'+str(port)
      if os.path.exists(serial_port) == True:
         print 'New Serial Port : ' + serial_port
         break
33

34
35
36
37
   ser = serial.Serial(port=serial_port)
   return

find_open_port()
38
39
40
print 'Using Serial port : ' + serial_port  
    
#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

for arg in sys.argv[1:]:
    if arg == '--start-ue' :
        start_ue()
    elif arg == '--stop-ue' :
        stop_ue()
    else :
        print " Script called with wrong arguments, arg = " + arg
        sys.exit()