Script to connect e3372s-153 stick firmware to internet on Linux

gistfile1.txt

## Reference https://lists.openwrt.org/pipermail/openwrt-devel/2015-July/034094.html
import serial
from subprocess import call
from time import sleep

p='/dev/ttyUSB1'

def toIP(octet):
  n=2
  ipArray = [int(octet[i:i+n],16) for i in range(0, len(octet), n)][::-1]
  return ".".join(map(str, ipArray))


ser = serial.Serial(port=p, timeout=4)

ser.write('ATZ\r\n')
print(ser.read(500))

ser.write('ATQ0 V1 E1 S0=0\r\n')
print(ser.read(500))

ser.write('AT^NDISDUP=1,1,"internet"\r\n')
print(ser.read(500))
sleep(5)
ser.write('AT^DHCP?\r\n')
output=ser.read(500)
got_dhcp=False

for line in output.split("\n"):
  if(line[:7] != "^DHCP: "):
    continue

  got_dhcp=True
  print "LINE"
  print line
  ips= map(toIP, line[7:].split(",")) 
  print ips
  c=call(["ifconfig", "wwan0", ips[0], "netmask", ips[1], "up"])
  if (c!=0):
    print "ERROR: Setting interface"
  c=call(["route", "add", "-net", "default", "gw", ips[2]])
  if (c!=0):
    print "ERROR: Setting default router"

if (got_dhcp == False):
  print "Running dhclient..."
  c=call("dhclient","wwan0")

print "All done!"